.palette-label {
    margin-top: 1rem;
}
/* 1page.tools Main Theme CSS */
:root {
    /* Light theme variables */
    --primary-bg: linear-gradient(120deg, #e0eafc 0%, #cfdef3 100%);
    --secondary-bg: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    --accent-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --container-bg: #fff;
    --container-radius: 15px;
    --container-shadow: 0 10px 30px rgba(0,0,0,0.10);
    --header-color: #2d3a4a;
    --text-color: #333;
    --text-primary: #333;
    --text-secondary: #666;
    --footer-color: #555;
    --button-bg: #667eea;
    --button-hover-bg: #764ba2;
    --button-text: #fff;
    --border-color: #ccc;
    --input-bg: #fff;
    --input-border: #ddd;
    --card-bg: #f8f9fa;
    --status-bg: #e0eafc;
    --status-text: #2d3a4a;
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --primary-color: #667eea;
    --secondary-color: #f8f9fa;
}

/* Dark theme variables */
[data-theme="dark"] {
    --primary-bg: linear-gradient(120deg, #1a1a2e 0%, #16213e 100%);
    --secondary-bg: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 100%);
    --accent-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --container-bg: #2d3748;
    --container-shadow: 0 10px 30px rgba(0,0,0,0.30);
    --header-color: #e2e8f0;
    --text-color: #e2e8f0;
    --text-primary: #e2e8f0;
    --text-secondary: #a0aec0;
    --footer-color: #a0aec0;
    --button-bg: #667eea;
    --button-hover-bg: #764ba2;
    --button-text: #fff;
    --border-color: #4a5568;
    --input-bg: #4a5568;
    --input-border: #718096;
    --card-bg: #4a5568;
    --status-bg: #2d3748;
    --status-text: #e2e8f0;
    --bg-primary: #1a202c;
    --bg-secondary: #2d3748;
    --primary-color: #667eea;
    --secondary-color: #4a5568;
}

/* Dark theme filter button styles */
[data-theme="dark"] .filter-btn {
    background: #4a5568;
    color: #a0aec0;
}

[data-theme="dark"] .filter-btn.active {
    background: #667eea;
    color: #fff;
}

/* System preference fallback */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --primary-bg: linear-gradient(120deg, #1a1a2e 0%, #16213e 100%);
        --secondary-bg: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 100%);
        --accent-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        --container-bg: #2d3748;
        --container-shadow: 0 10px 30px rgba(0,0,0,0.30);
        --header-color: #e2e8f0;
        --text-color: #e2e8f0;
        --text-primary: #e2e8f0;
        --text-secondary: #a0aec0;
        --footer-color: #a0aec0;
        --button-bg: #667eea;
        --button-hover-bg: #764ba2;
        --button-text: #fff;
        --border-color: #4a5568;
        --input-bg: #4a5568;
        --input-border: #718096;
        --card-bg: #4a5568;
        --status-bg: #2d3748;
        --status-text: #e2e8f0;
        --bg-primary: #1a202c;
        --bg-secondary: #2d3748;
        --primary-color: #667eea;
        --secondary-color: #4a5568;
    }
}
body {
    margin: 0;
    font-family: 'Segoe UI', Arial, sans-serif;
    background: var(--primary-bg);
    min-height: 100vh;
    color: var(--text-color);
}
.container {
    max-width: 900px;
    margin: 3rem auto;
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 2.5rem 2rem;
}

/* Sidebar Ad Layout */
.page-wrapper {
    display: flex;
    gap: 2rem;
    max-width: 1400px;
    margin: 3rem auto;
    padding: 0 1rem;
}

.sidebar {
    width: 300px;
    flex-shrink: 0;
}

/* Hide left sidebar if it only contains broken ads */
.page-wrapper .sidebar:first-child:has(.ad-container:empty),
.page-wrapper .sidebar:first-child:has(.ad-container img[src*="placeholder"]) {
    display: none !important;
    width: 0 !important;
    margin: 0 !important;
    padding: 0 !important;
}

.main-content {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    width: 100%;
    box-sizing: border-box;
}

.ad-container {
    margin-bottom: 2rem;
    text-align: center;
}

.ad-container.vertical {
    position: sticky;
    top: 2rem;
    min-height: 600px; /* Reserve space for vertical ads to prevent CLS */
}

.ad-container.horizontal {
    margin: 2rem 0;
    min-height: 90px; /* Reduced min-height for mobile to prevent excessive layout shift */
}

/* AdSense responsive ads */
.ad-responsive {
    width: 100%;
    height: auto;
    display: block;
}

/* Hide sidebars on mobile */
@media (max-width: 1200px) {
    .page-wrapper {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        display: flex;
        gap: 1rem;
        justify-content: center;
    }
    
    .sidebar .ad-container {
        margin-bottom: 1rem;
    }
}

@media (max-width: 768px) {
    .page-wrapper {
        margin: 1rem auto;
        padding: 0 0.5rem;
    }
    
    .sidebar {
        flex-direction: column;
        gap: 0;
    }
    
    .ad-container {
        margin-bottom: 1rem;
    }
}

/* Logo styles */
.header-logo {
    text-align: center;
    margin-bottom: 1rem;
}

/* Desktop: Logo and heading in same row */
@media (min-width: 1024px) {
    .header-logo {
        display: inline-block;
        margin-bottom: 0;
        margin-right: 1rem;
        vertical-align: middle;
    }
    
    .site-logo {
        max-width: none;
        max-height: 100px;
        height: 100px;
        width: auto;
        display: inline-block;
        margin: 0;
        vertical-align: middle;
        transition: transform 0.3s ease;
    }
    
    h1 {
        display: inline-block;
        vertical-align: middle;
        margin: 0;
    }
}

/* Tablet: Keep vertical layout */
@media (max-width: 1023px) and (min-width: 769px) {
    .site-logo {
        max-width: 80px;
        height: auto;
        max-height: 40px;
        width: auto;
        display: block;
        margin: 0 auto;
        transition: transform 0.3s ease;
    }
}

/* Mobile: Horizontal layout with larger logo */
@media (max-width: 768px) {
    .header-logo {
        display: inline-block;
        margin-bottom: 0;
        margin-right: 0.75rem;
        vertical-align: middle;
    }
    
    .site-logo {
        max-width: 120px;
        height: auto;
        max-height: 60px;
        width: auto;
        display: inline-block;
        margin: 0;
        vertical-align: middle;
        transition: transform 0.3s ease;
    }
    
    h1 {
        display: inline-block;
        vertical-align: middle;
        margin: 0;
        font-size: 2rem;
    }
}

.site-logo:hover {
    transform: scale(1.05);
}

h1, header {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: var(--header-color);
}

h1 {
    color: var(--header-color) !important;
}

header h1 {
    color: var(--header-color) !important;
}
p {
    text-align: center;
    color: var(--footer-color);
    margin-bottom: 2rem;
}
footer {
    text-align: center;
    margin-top: 2rem;
    color: var(--footer-color);
}

.site-footer {
    text-align: center;
    margin-top: 2rem;
    color: var(--footer-color);
}

.hidden {
    display: none;
}
.button, .filter-btn {
    background: var(--button-bg);
    color: var(--button-text);
    border: none;
    border-radius: 8px;
    padding: 0.5rem 1.2rem;
    cursor: pointer;
    transition: background 0.2s;
}
.button:hover, .filter-btn:hover {
    background: var(--button-hover-bg);
}
.tool-card, .picker-container {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 2rem;
    margin-bottom: 1.5rem;
}
.palette-swatch, .color-preview {
    border: 1px solid var(--border-color);
    border-radius: 8px;
}
.status {
    margin-top: 1rem;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    background: #e0eafc;
    color: var(--header-color);
}
.status.success {
    background: #d4edda;
    color: #155724;
}
.status.error {
    background: #f8d7da;
    color: #721c24;
}

/* Styles migrated from topdf.html */
.upload-area {
    border: 3px dashed var(--button-bg);
    border-radius: 10px;
    padding: 40px 20px;
    text-align: center;
    margin-bottom: 20px;
    transition: all 0.3s;
    background: var(--card-bg);
}
.upload-area:hover {
    background: var(--status-bg);
    border-color: var(--button-hover-bg);
}
.upload-area i {
    font-size: 50px;
    color: var(--button-bg);
    margin-bottom: 15px;
}
.upload-area p {
    margin: 10px 0;
    color: var(--footer-color);
}
.btn {
    background: var(--button-bg);
    color: var(--button-text);
    border: none;
    padding: 12px 25px;
    border-radius: 50px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
    margin: 10px 5px;
}
.btn:hover {
    background: var(--button-hover-bg);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}
.btn:active {
    transform: translateY(0);
}
.btn-secondary {
    background: #2ecc71;
}
.btn-secondary:hover {
    background: #27ae60;
}
.btn-danger {
    background: #e74c3c;
}
.btn-danger:hover {
    background: #c0392b;
}
.preview-area {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin: 20px 0;
    justify-content: center;
}
.preview-item {
    width: 150px;
    height: 200px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    position: relative;
}
.preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.remove-btn {
    position: absolute;
    top: 5px;
    right: 5px;
    background: rgba(231, 76, 60, 0.8);
    color: white;
    border: none;
    width: 25px;
    height: 25px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.action-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 20px;
}
.status {
    text-align: center;
    margin: 20px 0;
    font-weight: 500;
}
.status.success {
    color: #27ae60;
}
.status.error {
    color: #e74c3c;
}
.instructions {
    background: var(--card-bg);
    border-left: 4px solid var(--button-bg);
    padding: 15px;
    margin: 20px 0;
    border-radius: 0 8px 8px 0;
}
.instructions h3 {
    color: var(--header-color);
    margin-bottom: 10px;
}
.instructions ol {
    padding-left: 20px;
}
.instructions li {
    margin-bottom: 8px;
    color: var(--text-color);
}
.site-footer {
    margin-top: 30px;
    text-align: center;
    color: #7f8c8d;
    font-size: 14px;
}

/* Styles migrated from pdfsticher.html */
h1 {
    color: var(--header-color);
    margin-bottom: 10px;
    font-size: 2.2rem;
}
.subtitle {
    color: var(--footer-color);
    font-size: 1.1rem;
}
.upload-area {
    border: 3px dashed #3498db;
    border-radius: 10px;
    padding: 40px 20px;
    text-align: center;
    margin-bottom: 25px;
    transition: all 0.3s;
    background: #f8f9fa;
    cursor: pointer;
    min-height: 250px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.upload-area:hover {
    background: #e8f4ff;
    border-color: #2980b9;
}
.upload-area.highlight {
    background: #d4edff;
    border-color: #1abc9c;
}
.upload-icon {
    font-size: 60px;
    margin-bottom: 15px;
    color: #3498db;
}
.upload-text {
    margin: 10px 0;
    color: #7f8c8d;
}
.btn {
    background: #3498db;
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 50px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
    margin: 10px 5px;
}
.btn:hover:not(:disabled) {
    background: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}
.btn:active {
    transform: translateY(0);
}
.btn:disabled {
    background: #bdc3c7;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}
.file-list {
    margin: 25px 0;
    max-height: 300px;
    overflow-y: auto;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 15px;
}
.file-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 15px;
    background: #f8f9fa;
    border-radius: 6px;
    margin-bottom: 10px;
    transition: all 0.2s;
}
.file-item:hover {
    background: #e9ecef;
}
.file-info {
    display: flex;
    align-items: center;
    flex: 1;
}
.file-icon {
    font-size: 24px;
    margin-right: 12px;
    color: #e74c3c;
}
.file-name {
    font-weight: 500;
    color: #2c3e50;
}
.file-size {
    color: #7f8c8d;
    font-size: 0.9rem;
    margin-left: 10px;
}
.file-actions {
    display: flex;
    gap: 10px;
}
.action-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 18px;
    padding: 5px;
    border-radius: 4px;
    transition: all 0.2s;
}
.move-up {
    color: #3498db;
}
.move-down {
    color: #3498db;
}
.remove {
    color: #e74c3c;
}
.action-btn:hover {
    background: rgba(0, 0, 0, 0.05);
}
.action-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 25px;
    gap: 10px;
}
.status {
    text-align: center;
    margin: 20px 0;
    padding: 12px;
    border-radius: 6px;
    font-weight: 500;
}
.status-success {
    background: #d4f8e8;
    color: #27ae60;
}
.status-error {
    background: #fde8e6;
    color: #e74c3c;
}
.status-info {
    background: #e8f4ff;
    color: #3498db;
}
.instructions {
    background: #f8f9fa;
    border-left: 4px solid #3498db;
    padding: 15px;
    margin: 20px 0;
    border-radius: 0 8px 8px 0;
}
.instructions h3 {
    color: #2c3e50;
    margin-bottom: 10px;
}
.instructions ol {
    padding-left: 20px;
}
.instructions li {
    margin-bottom: 8px;
    color: #34495e;
}
.empty-state {
    text-align: center;
    padding: 30px;
    color: #7f8c8d;
}
.empty-state i {
    font-size: 50px;
    margin-bottom: 15px;
    color: #bdc3c7;
}
.site-footer {
    margin-top: 30px;
    text-align: center;
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    max-width: 900px;
}
.drag-handle {
    cursor: move;
    margin-right: 10px;
    color: #95a5a6;
}
@media (max-width: 768px) {
    .container {
        padding: 20px;
    }
    .file-item {
        flex-direction: column;
        align-items: flex-start;
    }
    .file-actions {
        align-self: flex-end;
        margin-top: 10px;
    }
    h1 {
        font-size: 1.8rem;
    }
    
    .site-logo {
        max-width: 30px;
        max-height: 12px;
    }
    
    .input-container {
        flex-direction: column;
    }
    .map-container {
        height: 300px;
    }
}
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
    margin-right: 10px;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}
.history-section {
    margin-top: 30px;
}
.history-title {
    text-align: center;
    margin-bottom: 15px;
    color: #2c3e50;
}
.history-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}
.history-item {
    background: #f8f9fa;
    padding: 10px 15px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 14px;
}
.history-item:hover {
    background: #3498db;
    color: white;
}
.leaflet-container {
    background: #e0e8f0;
}

/* Styles migrated from index.html */
.tools-list {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
    justify-content: center;
    width: 100%;
    box-sizing: border-box;
    overflow: hidden;
}

.filter-capsules {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    justify-content: center;
}
.filter-btn {
    background: #eaf6fb;
    border: none;
    border-radius: 20px;
    padding: 0.5rem 1.2rem;
    font-size: 1rem;
    color: #2980b9;
    cursor: pointer;
    font-weight: 500;
    transition: background 0.2s, color 0.2s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    justify-content: center;
}
.filter-btn.active {
    background: #2980b9;
    color: #fff;
}
.filter-btn i {
    font-size: 1.1rem;
}
.tool-card {
    background: #f7fafd;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    padding: 1.2rem 1rem;
    text-align: center;
    transition: box-shadow 0.2s;
    width: 100%;
    box-sizing: border-box;
    min-width: 0;
    overflow: hidden;
}
.tool-card:hover {
    box-shadow: 0 4px 16px rgba(52,152,219,0.12);
}
.tool-card a {
    text-decoration: none;
    color: #2980b9;
    font-weight: 500;
    font-size: 1.1rem;
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}
.tool-desc {
    color: #6c7a89;
    font-size: 0.95rem;
    margin-top: 0.5rem;
}
@media (max-width: 768px) {
    .tools-list {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .filter-capsules {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    }
}

@media (max-width: 480px) {
    .site-logo {
        max-width: 100px;
        max-height: 50px;
    }
    
    h1 {
        font-size: 1.8rem;
    }
    
    .tools-list {
        grid-template-columns: 1fr;
    }
    
    .filter-capsules {
        grid-template-columns: repeat(auto-fit, minmax(90px, 1fr));
    }
    
    .values {
        grid-template-columns: 1fr;
    }
}
.site-footer, .footer {
    text-align: center;
    color: #7b8ca0;
    font-size: 0.95rem;
    margin-top: 2rem;
}

/* Styles migrated from colorpicker.html */
.values {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin: 1.5rem 0;
}

.value-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: var(--card-bg);
    border-radius: 8px;
    border-left: 4px solid var(--button-bg);
    font-family: 'Segoe UI', Arial, sans-serif;
}

.value-row span {
    font-family: 'Courier New', monospace;
    font-weight: 600;
    color: var(--header-color);
}
.copy-icon {
    cursor: pointer;
    font-size: 1.1rem;
    color: var(--button-bg);
    background: none;
    border: none;
    padding: 0.3rem 0.5rem;
    border-radius: 6px;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 32px;
}
.copy-icon:hover {
    background: var(--status-bg);
    color: var(--button-hover-bg);
    transform: scale(1.05);
}
.copy-icon:active {
    transform: scale(0.95);
}
.palette-section {
    margin-top: 2rem;
    text-align: left;
}
.palette-row {
    display: flex;
    gap: 0.3rem;
    margin-bottom: 0.5rem;
}
.palette-swatch {
    width: 40px;
    height: 40px;
    border-radius: 6px;
    border: 1px solid #ccc;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    color: #333;
    background: #fff;
    flex-direction: column;
}
input[type="color"] {
    width: 60px;
    height: 60px;
    border: none;
    background: none;
    cursor: pointer;
}

/* Additional styles for colorpickerimage.html */
.btn-success {
    background: #2ecc71;
}

.btn-success:hover:not(:disabled) {
    background: #27ae60;
}

.btn-danger {
    background: #e74c3c;
}

.btn-danger:hover:not(:disabled) {
    background: #c0392b;
}

.image-preview {
    max-width: 100%;
    max-height: 400px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    margin: 20px 0;
    display: none;
}

.canvas-container {
    position: relative;
    margin: 20px 0;
    display: none;
}

#imageCanvas {
    max-width: 100%;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    cursor: crosshair;
}

.color-info {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 20px;
    margin: 20px 0;
    text-align: center;
    display: none;
}

.color-preview {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin: 0 auto 15px;
    border: 3px solid white;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.color-values {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 15px;
}

.color-value {
    padding: 8px 15px;
    border-radius: 20px;
    background: white;
    font-family: monospace;
    font-weight: 600;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.palette-title {
    text-align: center;
    margin-bottom: 20px;
    color: #2c3e50;
}

.palette-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.palette-color {
    width: 80px;
    height: 80px;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: center;
    padding: 8px;
    color: white;
    font-weight: 600;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s;
    cursor: pointer;
}

.palette-color:hover {
    transform: scale(1.05);
}

.color-scheme-selector {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin: 15px 0;
    flex-wrap: wrap;
}

.scheme-btn {
    padding: 8px 15px;
    background: #ecf0f1;
    border: none;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
}

.scheme-btn.active {
    background: #3498db;
    color: white;
}

.zoom-controls {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin: 10px 0;
}

.zoom-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #3498db;
    color: white;
    border: none;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Removed conflicting main-content rule - using sidebar layout version instead */

.upload-section {
    flex: 1;
}

.results-section {
    flex: 1;
}

@media (max-width: 768px) {
    .main-content {
        flex-direction: column;
    }
}

/* Back Button Styles */
.back-button {
    position: fixed;
    top: 20px;
    left: 20px;
    width: 50px;
    height: 50px;
    background: var(--button-bg);
    border: none;
    border-radius: 50%;
    color: var(--button-text);
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
    z-index: 1000;
    text-decoration: none;
}

.back-button:hover {
    background: var(--button-hover-bg);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.back-button:active {
    transform: translateY(0);
}

.back-button::before {
    content: "arrow_back";
    font-family: 'Material Icons';
    font-size: 24px;
    font-weight: normal;
    font-style: normal;
    display: inline-block;
    line-height: 1;
    text-transform: none;
    letter-spacing: normal;
    word-wrap: normal;
    white-space: nowrap;
    direction: ltr;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    -moz-osx-font-smoothing: grayscale;
    font-feature-settings: 'liga';
}

/* Responsive Textarea Styles */
.input-section textarea,
.output-section textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-family: 'Segoe UI', Arial, sans-serif;
    font-size: 14px;
    background: var(--input-bg);
    color: var(--text-color);
    resize: vertical;
    transition: border-color 0.2s;
    /* Responsive columns for text areas */
    columns: 80; /* Desktop default */
    min-height: 120px;
    line-height: 1.5;
}

.input-section textarea:focus,
.output-section textarea:focus {
    outline: none;
    border-color: var(--button-bg);
}

/* Responsive textarea columns */
@media (min-width: 1024px) {
    .input-section textarea,
    .output-section textarea {
        columns: 100; /* Desktop: wider columns */
        min-height: 150px;
    }
}

@media (max-width: 768px) {
    .input-section textarea,
    .output-section textarea {
        columns: 60; /* Tablet: medium columns */
        min-height: 120px;
        font-size: 16px; /* Prevent zoom on mobile */
    }
}

@media (max-width: 480px) {
    .input-section textarea,
    .output-section textarea {
        columns: 40; /* Mobile: narrow columns */
        min-height: 100px;
        padding: 0.75rem;
    }
}

/* Math Tools Styles */
.calculator-container {
    max-width: 400px;
    margin: 0 auto;
    padding: 2rem;
}

.calculator {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
}

.calculator-display {
    margin-bottom: 1rem;
}

.calculator-display input {
    width: 100%;
    height: 60px;
    font-size: 24px;
    text-align: right;
    padding: 0 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-color);
    font-family: 'Courier New', monospace;
}

.calculator-buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
}

.calc-btn {
    height: 60px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s;
    background: var(--card-bg);
    color: var(--text-color);
}

.calc-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.calc-btn:active {
    transform: translateY(0);
}

.calc-btn-number {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.calc-btn-number:hover {
    background: var(--hover-bg);
    border-color: var(--primary-color);
}

.calc-btn-operator {
    background: var(--button-bg);
    color: var(--button-text);
    border: 1px solid var(--border-color);
}

.calc-btn-operator:hover {
    background: var(--button-hover-bg);
}

.calc-btn-equals {
    background: var(--button-hover-bg);
    border: 1px solid var(--primary-color);
    color: var(--button-text);
    grid-row: span 2;
}

.calc-btn-clear {
    background: #dc3545;
    color: white;
    border: 1px solid #dc3545;
}

.calc-btn-clear:hover {
    background: #c82333;
    border-color: #c82333;
}

.calc-btn-zero {
    grid-column: span 2;
}

/* Unit Converter Styles */
.converter-container {
    max-width: 600px;
    margin: 0 auto;
}

.converter-category,
.converter-inputs,
.converter-result {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.converter-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1rem;
}

.input-group {
    display: flex;
    flex-direction: column;
}

.input-group label {
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.input-group input,
.input-group select {
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-color);
    font-size: 14px;
}

.input-group input:focus,
.input-group select:focus {
    outline: none;
    border-color: var(--button-bg);
}

.converter-result {
    text-align: center;
}

.converter-result input {
    width: 100%;
    margin-bottom: 1rem;
    font-size: 18px;
    font-weight: bold;
    text-align: center;
}

/* Percentage Calculator Styles */
.percentage-container {
    max-width: 700px;
    margin: 0 auto;
}

.calculation-type,
.calculation-inputs,
.calculation-result,
.calculation-examples {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.calculation-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.result-display {
    text-align: center;
    margin-bottom: 1rem;
}

.result-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--button-bg);
    margin-bottom: 0.5rem;
}

.result-explanation {
    font-size: 1.1rem;
    color: var(--text-color);
}

.examples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.example-card {
    background: var(--card-bg);
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid var(--button-bg);
}

.example-card strong {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.example-card p {
    margin: 0;
    color: var(--footer-color);
    font-weight: 600;
}

/* Responsive adjustments for math tools */
@media (max-width: 768px) {
    .converter-inputs {
        grid-template-columns: 1fr;
    }
    
    .calculation-inputs {
        grid-template-columns: 1fr;
    }
    
    .calculator-buttons {
        gap: 0.25rem;
    }
    
    .calc-btn {
        height: 50px;
        font-size: 16px;
    }
    
    .calculator-display input {
        height: 50px;
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    .calculator-container {
        padding: 1rem;
    }
    
    .calculator {
        padding: 1rem;
    }
    
    .calc-btn {
        height: 45px;
        font-size: 14px;
    }
    
    .calculator-display input {
        height: 45px;
        font-size: 18px;
    }
    
    .examples-grid {
        grid-template-columns: 1fr;
    }
}

/* AdSense Styles */
.ad-container {
    margin: 2rem auto;
    text-align: center;
    max-width: 100%;
    overflow: hidden;
    min-height: 250px; /* Reserve space to prevent layout shift */
}

.ad-banner {
    margin: 1.5rem 0;
    padding: 0.5rem;
    background: transparent;
    border-radius: var(--container-radius);
    min-height: 0;
}

.ad-rectangle {
    margin: 2rem 0;
    padding: 0.5rem;
    background: transparent;
    border-radius: var(--container-radius);
    min-height: 0;
}

/* Hide ad containers when they're empty or loading */
.ad-container:empty {
    display: none;
}

.ad-container .adsbygoogle:empty {
    display: none;
}

/* Hide broken ad placeholders and broken images */
.ad-container img[src*="placeholder"],
.ad-container img[alt*="Ad"]:not([src*="googleusercontent"]),
.ad-container img[alt*="Advertisement"],
.ad-container .adsbygoogle:not(:has(img)) {
    display: none !important;
}

/* Hide entire ad container if it only contains broken images */
.ad-container:has(img[src*="placeholder"]):not(:has(img:not([src*="placeholder"]))) {
    display: none !important;
    height: 0 !important;
    margin: 0 !important;
    padding: 0 !important;
}

/* Responsive ad adjustments */
@media (max-width: 768px) {
    .ad-container {
        margin: 1rem auto;
        padding: 0.25rem;
        min-height: 50px; /* Small reserve for mobile ads */
    }
    
    .ad-container.vertical {
        min-height: 250px; /* Smaller reserve on mobile */
    }
    
    .ad-container.horizontal {
        min-height: 50px; /* Minimal reserve for mobile horizontal ads */
    }
    
    .ad-banner,
    .ad-rectangle {
        margin: 0.5rem 0;
        padding: 0.25rem;
        min-height: 0;
    }
    
    /* Hide ad containers on mobile if they're empty */
    .ad-container:empty {
        display: none !important;
        margin: 0;
        padding: 0;
    }
}

@media (max-width: 480px) {
    .ad-container {
        margin: 0.5rem auto;
        padding: 0.1rem;
        min-height: 0;
    }
    
    .ad-banner,
    .ad-rectangle {
        margin: 0.25rem 0;
        padding: 0.1rem;
        min-height: 0;
    }
    
    /* Ensure empty ad containers are hidden on mobile */
    .ad-container:empty {
        display: none !important;
        margin: 0;
        padding: 0;
        height: 0;
    }
}

/* Image Blur Tool Styles */
.image-tools-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
}

.blur-controls {
    background: var(--card-bg);
    border-radius: var(--container-radius);
    padding: 2rem;
    margin: 2rem 0;
    box-shadow: var(--card-shadow);
}

.control-group {
    margin-bottom: 2rem;
}

.control-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

#blurSlider {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: var(--border-color);
    outline: none;
    -webkit-appearance: none;
    margin-bottom: 0.5rem;
}

#blurSlider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

#blurSlider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.preset-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    background: var(--secondary-color);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-small:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.preview-section {
    background: var(--card-bg);
    border-radius: var(--container-radius);
    padding: 2rem;
    margin: 2rem 0;
    box-shadow: var(--card-shadow);
}

.image-preview-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 1rem;
}

.original-image,
.blurred-image {
    text-align: center;
}

.original-image h4,
.blurred-image h4 {
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-size: 1.125rem;
}

.image-wrapper {
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
}

.image-wrapper img {
    max-width: 100%;
    max-height: 300px;
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.no-image-placeholder {
    text-align: center;
    color: var(--text-secondary);
}

.no-image-placeholder i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.no-image-placeholder p {
    margin: 0;
    font-size: 0.875rem;
}

.action-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin: 2rem 0;
    flex-wrap: wrap;
}

/* Responsive adjustments for image blur tool */
@media (max-width: 768px) {
    .image-preview-container {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .preset-buttons {
        justify-content: center;
    }
    
    .btn-small {
        flex: 1;
        min-width: 80px;
    }
    
    .action-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .action-buttons .btn {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .image-tools-container {
        padding: 1rem;
    }
    
    .blur-controls,
    .preview-section {
        padding: 1rem;
    }
    
    .image-wrapper {
        min-height: 150px;
        padding: 0.5rem;
    }
    
    .preset-buttons {
        gap: 0.25rem;
    }
    
    .btn-small {
        padding: 0.375rem 0.75rem;
        font-size: 0.8rem;
    }
}

/* Dark Mode Toggle Styles */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    background: var(--container-bg);
    border: 2px solid var(--border-color);
    border-radius: 50px;
    padding: 8px;
    box-shadow: var(--container-shadow);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.theme-toggle:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.theme-toggle-icon {
    font-size: 20px;
    transition: all 0.3s ease;
}

.theme-toggle-text {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    transition: all 0.3s ease;
}

/* Hide text on mobile */
@media (max-width: 768px) {
    .theme-toggle {
        padding: 8px;
        border-radius: 50%;
    }
    
    .theme-toggle-text {
        display: none;
    }
}

/* Smooth transitions for theme changes */
* {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* Search Bar Styles */
.search-container {
    margin: 0.5rem 0 1rem 0;
    display: flex;
    justify-content: center;
    width: 50%;
}

/* Search and Recent Tools Row */
.search-recent-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    justify-content: center;
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
    flex-wrap: wrap;
}

/* Responsive adjustments for search-recent-row */
@media (max-width: 768px) {
    .search-recent-row {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .search-container {
        width: 100%;
        max-width: 100%;
    }
    
    .recent-tools {
        width: 100%;
        max-width: 100%;
        min-width: auto;
    }
}

.search-box {
    position: relative;
    max-width: 350px;
    width: 100%;
    display: flex;
    align-items: center;
    background: var(--container-bg) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: 20px;
    padding: 8px 16px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    min-height: 36px;
}

.search-box:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.1);
}

.search-icon {
    color: var(--text-secondary);
    margin-right: 8px;
    font-size: 18px;
}

#toolSearch {
    flex: 1;
    border: none !important;
    outline: none !important;
    background: transparent !important;
    color: var(--text-primary) !important;
    font-size: 14px;
    padding: 0;
    width: 100%;
    font-family: inherit;
}

#toolSearch::placeholder {
    color: var(--text-secondary);
    font-size: 14px;
}

.clear-search {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 2px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    font-size: 16px;
}

.clear-search:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.search-results-info {
    text-align: center;
    margin: 0.5rem 0;
    color: var(--text-secondary);
    font-size: 12px;
}

.no-results {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-size: 14px;
}

.no-results i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Responsive search */
@media (max-width: 768px) {
    .search-container {
        margin: 1rem 0;
        padding: 0 1rem;
    }
    
    .search-box {
        padding: 10px 16px;
    }
    
    #toolSearch {
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    .recent-tools {
        margin: 1rem;
        padding: 1rem;
    }
}

/* Recent Tools Widget Styles */
.recent-tools {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 0.75rem;
    margin: 0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border-color);
    flex: 1;
    min-width: 300px;
    max-width: 500px;
}

.recent-tools h3 {
    margin: 0 0 0.75rem 0;
    color: var(--text-primary);
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.recent-tools h3::before {
    content: "history";
    font-family: 'Material Icons';
    font-size: 18px;
    color: var(--primary-color);
}

.recent-tools-list {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.recent-tool-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.5rem 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.8rem;
    min-width: 100px;
}

.recent-tool-item:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.recent-tool-item i {
    font-size: 16px;
    opacity: 0.8;
}

.recent-tool-clear {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    transition: all 0.2s ease;
    margin-left: auto;
}

.recent-tool-clear:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* Responsive recent tools */
@media (max-width: 768px) {
    .recent-tools {
        padding: 1rem;
        margin: 1rem 0;
    }
    
    .recent-tools-list {
        gap: 0.5rem;
    }
    
    .recent-tool-item {
        padding: 0.5rem 0.75rem;
        font-size: 0.8rem;
        min-width: 100px;
    }
}

/* Base64 Encoder/Decoder Styles */
.base64-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
}

.base64-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
}

.tab-btn {
    background: none;
    border: none;
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 600;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
}

.tab-btn:hover {
    color: var(--text-primary);
    background: var(--bg-secondary);
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.input-section, .output-section, .file-upload-section, .download-section {
    background: var(--card-bg);
    border-radius: var(--container-radius);
    padding: 1.5rem;
    margin: 1.5rem 0;
    box-shadow: var(--container-shadow);
    border: 1px solid var(--border-color);
}

.input-section label, .output-section label, .file-upload-section label, .download-section label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

#textInput, #textOutput, #fileOutput {
    width: 100%;
    min-height: 120px;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
    font-size: 14px;
    resize: vertical;
    transition: border-color 0.3s ease;
}

#textInput:focus, #textOutput:focus, #fileOutput:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

#fileInput {
    width: 100%;
    padding: 0.75rem;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
}

#fileInput:hover {
    border-color: var(--primary-color);
    background: var(--bg-secondary);
}

.file-info {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.file-info p {
    margin: 0.5rem 0;
    color: var(--text-primary);
}

.action-buttons {
    display: flex;
    gap: 1rem;
    margin: 1.5rem 0;
    flex-wrap: wrap;
}

.action-buttons .btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
    min-width: 150px;
    justify-content: center;
}

.output-section {
    position: relative;
}

.output-section .btn-small {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.info-section {
    background: var(--card-bg);
    border-radius: var(--container-radius);
    padding: 2rem;
    margin: 2rem 0;
    box-shadow: var(--container-shadow);
    border: 1px solid var(--border-color);
}

.info-section h3 {
    margin: 0 0 1rem 0;
    color: var(--text-primary);
}

.info-section ul {
    margin: 0;
    padding-left: 1.5rem;
}

.info-section li {
    margin: 0.5rem 0;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Responsive Base64 styles */
@media (max-width: 768px) {
    .base64-container {
        padding: 1rem;
    }
    
    .base64-tabs {
        flex-direction: column;
        gap: 0;
    }
    
    .tab-btn {
        border-bottom: 1px solid var(--border-color);
        border-radius: 0;
    }
    
    .tab-btn.active {
        border-bottom-color: var(--primary-color);
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .action-buttons .btn {
        min-width: auto;
    }
    
    .output-section .btn-small {
        position: static;
        margin-top: 1rem;
        width: 100%;
    }
}

/* Image Cropper Styles */
.crop-controls {
    background: var(--card-bg);
    border-radius: var(--container-radius);
    padding: 2rem;
    margin: 2rem 0;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
}

.aspect-ratio-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.aspect-ratio-buttons .btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    border: 2px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.aspect-ratio-buttons .btn-small:hover {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
}

.aspect-ratio-buttons .btn-small.active {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
}

.dimension-inputs {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.dimension-inputs input {
    width: 80px;
    padding: 0.5rem;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    background: var(--input-bg);
    color: var(--text-primary);
    text-align: center;
}

.dimension-inputs span {
    color: var(--text-secondary);
    font-weight: 600;
}

.crop-preview-section {
    background: var(--card-bg);
    border-radius: var(--container-radius);
    padding: 2rem;
    margin: 2rem 0;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
    text-align: center;
}

.crop-canvas-container {
    position: relative;
    display: inline-block;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 1rem;
    background: var(--bg-secondary);
}

#cropCanvas {
    cursor: move;
    display: block;
    max-width: 100%;
    height: auto;
}

.crop-info {
    text-align: left;
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.crop-info h4 {
    margin: 0 0 0.5rem 0;
    color: var(--text-primary);
}

.crop-info p {
    margin: 0.25rem 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.crop-info strong {
    color: var(--text-primary);
}

/* Responsive cropper styles */
@media (max-width: 768px) {
    .crop-controls {
        padding: 1rem;
    }
    
    .aspect-ratio-buttons {
        gap: 0.25rem;
    }
    
    .aspect-ratio-buttons .btn-small {
        padding: 0.375rem 0.75rem;
        font-size: 0.8rem;
    }
    
    .dimension-inputs {
        flex-direction: column;
        align-items: stretch;
    }
    
    .dimension-inputs input {
        width: 100%;
    }
    
    .crop-preview-section {
        padding: 1rem;
    }
    
    .crop-canvas-container {
        max-width: 100%;
    }
}

/* Chart Generator Styles */
.chart-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.chart-controls {
    background: var(--card-bg);
    border-radius: var(--container-radius);
    padding: 2rem;
    margin: 2rem 0;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
}

.chart-controls .control-group {
    margin-bottom: 1.5rem;
}

.chart-controls label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

#csvInput {
    width: 100%;
    min-height: 150px;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
    font-size: 14px;
    resize: vertical;
    transition: border-color 0.3s ease;
}

#csvInput:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

#csvFile {
    width: 100%;
    padding: 0.75rem;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
}

#csvFile:hover {
    border-color: var(--primary-color);
    background: var(--bg-secondary);
}

#chartType, #xColumn, #yColumn {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

#chartType:focus, #xColumn:focus, #yColumn:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

#chartTitle {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

#chartTitle:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.chart-preview {
    background: var(--card-bg);
    border-radius: var(--container-radius);
    padding: 2rem;
    margin: 2rem 0;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
    text-align: center;
}

.chart-wrapper {
    position: relative;
    width: 100%;
    height: 400px;
    margin-bottom: 1rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

#chartCanvas {
    max-width: 100%;
    max-height: 100%;
}

.chart-info {
    text-align: left;
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-top: 1rem;
}

.chart-info h4 {
    margin: 0 0 0.5rem 0;
    color: var(--text-primary);
}

.chart-info p {
    margin: 0.25rem 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.chart-info strong {
    color: var(--text-primary);
}

/* Responsive chart styles */
@media (max-width: 768px) {
    .chart-container {
        padding: 1rem;
    }
    
    .chart-controls {
        padding: 1rem;
    }
    
    .chart-preview {
        padding: 1rem;
    }
    
    .chart-wrapper {
        height: 300px;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .action-buttons .btn {
        min-width: auto;
    }
}

/* Date/Time Tools Styles */
.epoch-container,
.timezone-container,
.timer-container {
    max-width: 800px;
    margin: 0 auto;
}

.conversion-section {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.result-group {
    margin-top: 1rem;
}

.result-display {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 1rem;
    margin: 1rem 0;
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.result-item:last-child {
    border-bottom: none;
}

.result-item strong {
    color: var(--text-color);
    min-width: 100px;
}

.result-item span {
    color: var(--button-bg);
    font-weight: 600;
    font-family: 'Courier New', monospace;
}

/* Timezone Converter Styles */
.timezone-results {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin: 1rem 0;
}

.timezone-result {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 1rem;
    text-align: center;
    border-left: 4px solid var(--button-bg);
}

.timezone-name {
    font-weight: bold;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.timezone-time {
    font-size: 1.1rem;
    color: var(--button-bg);
    font-family: 'Courier New', monospace;
    margin-bottom: 0.25rem;
}

.timezone-offset {
    font-size: 0.9rem;
    color: var(--footer-color);
}

.world-clock-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 1rem 0;
}

.world-clock-item {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 1rem;
    text-align: center;
}

.clock-city {
    font-weight: bold;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.clock-time {
    font-size: 1.2rem;
    color: var(--button-bg);
    font-family: 'Courier New', monospace;
    margin-bottom: 0.25rem;
}

.clock-offset {
    font-size: 0.8rem;
    color: var(--footer-color);
}

/* Countdown Timer Styles */
.timer-setup {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.timer-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.timer-display {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 2rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.timer-title {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-color);
    margin-bottom: 1.5rem;
}

.countdown-display {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.time-unit {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 1rem;
    border: 2px solid var(--button-bg);
}

.time-value {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--button-bg);
    font-family: 'Courier New', monospace;
    margin-bottom: 0.5rem;
}

.time-label {
    font-size: 0.9rem;
    color: var(--footer-color);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.timer-status {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.preset-timers {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.preset-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.5rem;
    margin-top: 1rem;
}

.preset-btn {
    padding: 0.75rem;
    border: 2px solid var(--button-bg);
    border-radius: 8px;
    background: transparent;
    color: var(--button-bg);
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 600;
}

.preset-btn:hover {
    background: var(--button-bg);
    color: var(--button-text);
}

.timer-history {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.history-list {
    margin: 1rem 0;
}

.history-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--card-bg);
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.history-name {
    font-weight: 600;
    color: var(--text-color);
}

.history-time {
    color: var(--footer-color);
    font-size: 0.9rem;
}

/* Responsive adjustments for date/time tools */
@media (max-width: 768px) {
    .timezone-results {
        grid-template-columns: 1fr;
    }
    
    .world-clock-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .countdown-display {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }
    
    .time-value {
        font-size: 2rem;
    }
    
    .preset-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .timer-actions {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .world-clock-grid {
        grid-template-columns: 1fr;
    }
    
    .countdown-display {
        grid-template-columns: 1fr;
    }
    
    .time-value {
        font-size: 1.8rem;
    }
    
    .preset-grid {
        grid-template-columns: 1fr;
    }
    
    .history-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
}

/* Image Tools Styles */
.image-tools-container {
    max-width: 900px;
    margin: 0 auto;
}

.upload-section {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.upload-area {
    border: 3px dashed var(--border-color);
    border-radius: 12px;
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--card-bg);
}

.upload-area:hover,
.upload-area.drag-over {
    border-color: var(--button-bg);
    background: var(--status-bg);
    transform: translateY(-2px);
}

.upload-content {
    pointer-events: none;
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.7;
}

.upload-area h3 {
    margin: 0 0 0.5rem 0;
    color: var(--text-color);
    font-size: 1.2rem;
}

.upload-area p {
    margin: 0;
    color: var(--footer-color);
    font-size: 0.9rem;
}

.file-info {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 8px;
    border-left: 4px solid var(--button-bg);
}

.file-details {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.file-details:last-child {
    border-bottom: none;
}

.file-details strong {
    color: var(--text-color);
    min-width: 120px;
}

.file-details span {
    color: var(--button-bg);
    font-weight: 600;
    font-family: 'Courier New', monospace;
}

.compression-settings,
.resize-settings,
.conversion-settings {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin: 1rem 0;
}

.setting-group {
    display: flex;
    flex-direction: column;
}

.setting-group label {
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.setting-group input,
.setting-group select {
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-color);
    font-size: 14px;
}

.setting-group input:focus,
.setting-group select:focus {
    outline: none;
    border-color: var(--button-bg);
}

.setting-group input[type="range"] {
    padding: 0;
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    outline: none;
}

.setting-group input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--button-bg);
    border-radius: 50%;
    cursor: pointer;
}

.setting-group input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--button-bg);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.setting-group input[type="checkbox"] {
    width: auto;
    margin-right: 0.5rem;
}

.setting-group small {
    margin-top: 0.25rem;
    color: var(--footer-color);
    font-size: 0.8rem;
}

.preset-sizes {
    margin: 1.5rem 0;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 8px;
}

.preset-sizes h4 {
    margin: 0 0 1rem 0;
    color: var(--text-color);
}

.preset-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.5rem;
}

.preset-btn {
    padding: 0.75rem;
    border: 2px solid var(--button-bg);
    border-radius: 8px;
    background: transparent;
    color: var(--button-bg);
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 600;
    font-size: 0.9rem;
}

.preset-btn:hover {
    background: var(--button-bg);
    color: var(--button-text);
}

.format-info {
    margin: 1.5rem 0;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 8px;
}

.format-info h4 {
    margin: 0 0 1rem 0;
    color: var(--text-color);
}

.format-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.format-card {
    background: var(--container-bg);
    border-radius: 8px;
    padding: 1rem;
    border-left: 4px solid var(--button-bg);
}

.format-card h5 {
    margin: 0 0 0.5rem 0;
    color: var(--text-color);
    font-size: 1.1rem;
}

.format-card ul {
    margin: 0;
    padding-left: 1.2rem;
    color: var(--footer-color);
    font-size: 0.9rem;
}

.format-card li {
    margin-bottom: 0.25rem;
}

.action-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.results-section {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.result-card {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 1rem;
    text-align: center;
}

.result-card h4 {
    margin: 0 0 1rem 0;
    color: var(--text-color);
    font-size: 1.1rem;
}

.image-preview {
    margin-bottom: 1rem;
    border-radius: 8px;
    overflow: hidden;
    background: var(--input-bg);
    border: 2px solid var(--border-color);
}

.image-preview img {
    width: 100%;
    height: auto;
    max-height: 200px;
    object-fit: contain;
}

.file-stats {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.stat {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.25rem 0;
    font-size: 0.9rem;
    color: var(--text-color);
}

.stat span {
    font-weight: 600;
    color: var(--button-bg);
    font-family: 'Courier New', monospace;
}

.download-section {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 2px solid var(--border-color);
}

/* Responsive adjustments for image tools */
@media (max-width: 768px) {
    .settings-grid {
        grid-template-columns: 1fr;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .format-cards {
        grid-template-columns: 1fr;
    }
    
    .preset-buttons {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .upload-area {
        padding: 2rem 1rem;
    }
    
    .upload-icon {
        font-size: 2rem;
    }
    
    .action-buttons {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .preset-buttons {
        grid-template-columns: 1fr;
    }
    
    .upload-area {
        padding: 1.5rem 0.5rem;
    }
    
    .upload-icon {
        font-size: 1.5rem;
    }
    
    .file-details {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
}

/* Code Tools Styles */
.code-tools-container {
    max-width: 1000px;
    margin: 0 auto;
}

.input-section,
.regex-input-section,
.test-text-section {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.input-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.input-header label {
    font-weight: 600;
    color: var(--text-color);
    font-size: 1.1rem;
}

.input-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.input-actions .btn {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.input-section textarea,
.test-text-section textarea {
    width: 100%;
    min-height: 200px;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    background: var(--input-bg);
    color: var(--text-color);
    resize: vertical;
    line-height: 1.5;
}

.input-section textarea:focus,
.test-text-section textarea:focus {
    outline: none;
    border-color: var(--button-bg);
}

.regex-input-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.regex-delimiter {
    font-size: 1.5rem;
    color: var(--button-bg);
    font-weight: bold;
}

.regex-input-container input[type="text"] {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-color);
    font-family: 'Courier New', monospace;
    font-size: 14px;
}

.regex-input-container input[type="text"]:focus {
    outline: none;
    border-color: var(--button-bg);
}

.regex-flags {
    width: 80px !important;
    flex: none !important;
}

.regex-status,
.validation-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem;
    border-radius: 8px;
    background: var(--card-bg);
    margin-bottom: 1rem;
}

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border-color);
}

.status-indicator.valid {
    background: #28a745;
}

.status-indicator.invalid {
    background: #dc3545;
}

.status-indicator + span {
    font-weight: 600;
    color: var(--text-color);
}

.error-details {
    background: #f8d7da;
    border: 1px solid #f5c6cb;
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
}

.error-details h4 {
    margin: 0 0 0.5rem 0;
    color: #721c24;
}

.error-message {
    color: #721c24;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    background: #fff;
    padding: 0.5rem;
    border-radius: 4px;
    border: 1px solid #f5c6cb;
}

.input-stats,
.text-stats {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--footer-color);
}

.input-stats span,
.text-stats span {
    font-family: 'Courier New', monospace;
}

.conversion-options,
.formatting-options,
.regex-options {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 1rem 0;
}

.option-group {
    display: flex;
    flex-direction: column;
}

.option-group label {
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.option-group input,
.option-group select {
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-color);
    font-size: 14px;
}

.option-group input:focus,
.option-group select:focus {
    outline: none;
    border-color: var(--button-bg);
}

.option-group input[type="checkbox"] {
    width: auto;
    margin-right: 0.5rem;
}

.output-section {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.output-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.output-header label {
    font-weight: 600;
    color: var(--text-color);
    font-size: 1.1rem;
}

.output-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.output-actions .btn {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.output-section textarea {
    width: 100%;
    min-height: 200px;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    background: var(--input-bg);
    color: var(--text-color);
    resize: vertical;
    line-height: 1.5;
}

.output-stats {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--footer-color);
}

.output-stats span {
    font-family: 'Courier New', monospace;
}

.preview-section {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.preview-table-container {
    overflow-x: auto;
    margin-top: 1rem;
}

.preview-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
}

.preview-table th,
.preview-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.preview-table th {
    background: var(--button-bg);
    color: var(--button-text);
    font-weight: 600;
}

.preview-table td {
    color: var(--text-color);
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

.results-section {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.results-summary {
    display: flex;
    gap: 2rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 8px;
}

.summary-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.summary-item strong {
    color: var(--text-color);
    font-size: 0.9rem;
}

.summary-item span {
    color: var(--button-bg);
    font-weight: 600;
    font-family: 'Courier New', monospace;
    font-size: 1.1rem;
}

.matches-container {
    max-height: 400px;
    overflow-y: auto;
}

.match-item {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
    border-left: 4px solid var(--button-bg);
}

.match-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.match-header strong {
    color: var(--text-color);
}

.match-position {
    color: var(--footer-color);
    font-size: 0.9rem;
    font-family: 'Courier New', monospace;
}

.match-content {
    margin-top: 0.5rem;
}

.match-text {
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.5rem;
    font-family: 'Courier New', monospace;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.capture-groups {
    margin-top: 0.5rem;
}

.capture-groups strong {
    color: var(--text-color);
    font-size: 0.9rem;
}

.capture-group {
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.25rem 0.5rem;
    margin: 0.25rem 0;
    font-family: 'Courier New', monospace;
    color: var(--text-color);
    font-size: 0.9rem;
}

.no-matches {
    text-align: center;
    color: var(--footer-color);
    font-style: italic;
    padding: 2rem;
}

.quick-patterns {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.pattern-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.5rem;
    margin-top: 1rem;
}

.pattern-btn {
    padding: 0.75rem;
    border: 2px solid var(--button-bg);
    border-radius: 8px;
    background: transparent;
    color: var(--button-bg);
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 600;
    font-size: 0.9rem;
}

.pattern-btn:hover {
    background: var(--button-bg);
    color: var(--button-text);
}

/* Responsive adjustments for code tools */
@media (max-width: 768px) {
    .options-grid {
        grid-template-columns: 1fr;
    }
    
    .pattern-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .input-header,
    .output-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .input-actions,
    .output-actions {
        width: 100%;
        justify-content: flex-start;
    }
    
    .regex-input-container {
        flex-direction: column;
        align-items: stretch;
    }
    
    .regex-delimiter {
        display: none;
    }
    
    .results-summary {
        flex-direction: column;
        gap: 1rem;
    }
    
    .match-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .pattern-grid {
        grid-template-columns: 1fr;
    }
    
    .input-actions,
    .output-actions {
        flex-direction: column;
    }
    
    .input-actions .btn,
    .output-actions .btn {
        width: 100%;
    }
}

/* Web Tools Styles */
.web-tools-container {
    max-width: 1000px;
    margin: 0 auto;
}

.source-tabs {
    display: flex;
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    background: transparent;
    color: var(--footer-color);
    cursor: pointer;
    font-weight: 600;
    border-bottom: 3px solid transparent;
    transition: all 0.2s;
}

.tab-btn.active {
    color: var(--button-bg);
    border-bottom-color: var(--button-bg);
}

.tab-btn:hover {
    color: var(--button-bg);
}

.tab-content {
    padding: 1rem 0;
}

.text-input-group {
    margin-bottom: 1rem;
}

.text-input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.text-input-group input {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-color);
    font-size: 1.2rem;
    text-align: center;
}

.text-input-group input:focus {
    outline: none;
    border-color: var(--button-bg);
}

.text-preview,
.color-preview {
    display: flex;
    justify-content: center;
    margin: 1rem 0;
}

.preview-favicon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    font-size: 2rem;
    font-weight: bold;
    color: white;
    background: var(--button-bg);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    background: var(--card-bg);
}

.upload-area:hover,
.upload-area.drag-over {
    border-color: var(--button-bg);
    background: var(--input-bg);
}

.upload-content {
    pointer-events: none;
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.upload-hint {
    font-size: 0.9rem;
    color: var(--footer-color);
    margin-top: 0.5rem;
}

.image-preview {
    margin-top: 1rem;
    text-align: center;
}

.image-preview img {
    max-width: 200px;
    max-height: 200px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.image-info {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--footer-color);
}

.color-input-group {
    margin-bottom: 1rem;
}

.color-input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.color-input-group input[type="color"] {
    width: 100%;
    height: 50px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
}

.result-display {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin: 1rem 0;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 8px;
}

.result-display canvas {
    border: 2px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.result-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.info-item {
    display: flex;
    gap: 0.5rem;
}

.info-item strong {
    color: var(--text-color);
    min-width: 80px;
}

.info-item span {
    color: var(--button-bg);
    font-family: 'Courier New', monospace;
}

.usage-examples {
    margin-top: 1.5rem;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 8px;
}

.usage-examples h4 {
    margin: 0 0 1rem 0;
    color: var(--text-color);
}

.code-example {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem;
    background: var(--input-bg);
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.code-example code {
    flex: 1;
    font-family: 'Courier New', monospace;
    color: var(--text-color);
    font-size: 0.9rem;
}

.copy-code-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--button-bg);
    border-radius: 4px;
    background: transparent;
    color: var(--button-bg);
    cursor: pointer;
    font-size: 0.8rem;
    transition: all 0.2s;
}

.copy-code-btn:hover {
    background: var(--button-bg);
    color: var(--button-text);
}

.analysis-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.analysis-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 8px;
}

.analysis-item strong {
    color: var(--text-color);
    font-size: 0.9rem;
}

.analysis-item span {
    color: var(--button-bg);
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    word-break: break-all;
}

.quick-actions {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.quick-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.5rem;
    margin-top: 1rem;
}

.quick-btn {
    padding: 0.75rem;
    border: 2px solid var(--button-bg);
    border-radius: 8px;
    background: transparent;
    color: var(--button-bg);
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 600;
    font-size: 0.9rem;
}

.quick-btn:hover {
    background: var(--button-bg);
    color: var(--button-text);
}

.qr-display {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin: 1rem 0;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 8px;
}

.qr-display canvas {
    border: 2px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.qr-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.form-group input,
.form-group select {
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-color);
    font-size: 14px;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--button-bg);
}

.form-group input[type="checkbox"] {
    width: auto;
    margin-right: 0.5rem;
}

/* Responsive adjustments for web tools */
@media (max-width: 768px) {
    .source-tabs {
        flex-direction: column;
    }
    
    .tab-btn {
        border-bottom: none;
        border-left: 3px solid transparent;
        text-align: left;
    }
    
    .tab-btn.active {
        border-left-color: var(--button-bg);
        border-bottom-color: transparent;
    }
    
    .result-display,
    .qr-display {
        flex-direction: column;
        text-align: center;
    }
    
    .analysis-grid,
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .quick-buttons {
        grid-template-columns: 1fr;
    }
    
    .code-example {
        flex-direction: column;
        align-items: stretch;
    }
    
    .copy-code-btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .preview-favicon {
        width: 48px;
        height: 48px;
        font-size: 1.5rem;
    }
    
    .upload-area {
        padding: 1rem;
    }
    
    .upload-icon {
        font-size: 2rem;
    }
}

/* Security Tools Styles */
.security-tools-container {
    max-width: 1000px;
    margin: 0 auto;
}

.password-options,
.hash-options,
.validation-options {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.algorithms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin: 1rem 0;
}

.algorithm-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.algorithm-group label {
    font-weight: 600;
    color: var(--text-color);
}

.algorithm-group input[type="checkbox"] {
    width: auto;
    margin-right: 0.5rem;
}

.algorithm-group small {
    color: var(--footer-color);
    font-size: 0.8rem;
}

.password-result,
.hash-results,
.validation-results {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.password-display {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.password-field {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.password-field input {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-color);
    font-family: 'Courier New', monospace;
    font-size: 1rem;
}

.password-field input:focus {
    outline: none;
    border-color: var(--button-bg);
}

.toggle-visibility {
    padding: 0.5rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-color);
    cursor: pointer;
    font-size: 1rem;
}

.password-actions {
    display: flex;
    gap: 0.5rem;
}

.password-strength {
    margin: 1rem 0;
}

.strength-meter {
    width: 100%;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.strength-bar {
    height: 100%;
    width: 0%;
    transition: all 0.3s ease;
    border-radius: 4px;
}

.strength-text {
    font-weight: 600;
    text-align: center;
}

.strength-analysis {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 8px;
}

.strength-analysis h4 {
    margin: 0 0 1rem 0;
    color: var(--text-color);
}

.analysis-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.analysis-item {
    padding: 0.5rem;
    border-radius: 4px;
    font-size: 0.9rem;
}

.analysis-item.good {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.analysis-item.warning {
    background: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

.analysis-item.missing {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.feedback {
    margin-top: 1rem;
}

.feedback h4 {
    margin: 0 0 0.5rem 0;
    color: var(--text-color);
}

.feedback ul {
    margin: 0;
    padding-left: 1.5rem;
}

.feedback li {
    color: var(--text-color);
    margin-bottom: 0.25rem;
}

.multiple-passwords {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.passwords-list {
    margin: 1rem 0;
}

.password-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem;
    background: var(--card-bg);
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.password-number {
    font-weight: 600;
    color: var(--button-bg);
    min-width: 30px;
}

.password-text {
    flex: 1;
    font-family: 'Courier New', monospace;
    color: var(--text-color);
    word-break: break-all;
}

.copy-single-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--button-bg);
    border-radius: 4px;
    background: transparent;
    color: var(--button-bg);
    cursor: pointer;
    font-size: 0.8rem;
    transition: all 0.2s;
}

.copy-single-btn:hover {
    background: var(--button-bg);
    color: var(--button-text);
}

.passwords-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

.password-presets {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.presets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.5rem;
    margin-top: 1rem;
}

.preset-btn {
    padding: 0.75rem;
    border: 2px solid var(--button-bg);
    border-radius: 8px;
    background: transparent;
    color: var(--button-bg);
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 600;
    font-size: 0.9rem;
    text-align: left;
}

.preset-btn:hover {
    background: var(--button-bg);
    color: var(--button-text);
}

.hash-item {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
}

.hash-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.hash-header strong {
    color: var(--text-color);
    font-size: 1.1rem;
}

.copy-hash-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--button-bg);
    border-radius: 4px;
    background: transparent;
    color: var(--button-bg);
    cursor: pointer;
    font-size: 0.8rem;
    transition: all 0.2s;
}

.copy-hash-btn:hover {
    background: var(--button-bg);
    color: var(--button-text);
}

.hash-value {
    font-family: 'Courier New', monospace;
    color: var(--text-color);
    word-break: break-all;
    background: var(--input-bg);
    padding: 0.5rem;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.hash-comparison {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.comparison-input {
    margin-bottom: 1rem;
}

.comparison-input label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.comparison-input input {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-color);
    font-family: 'Courier New', monospace;
}

.comparison-input input:focus {
    outline: none;
    border-color: var(--button-bg);
}

.comparison-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.comparison-item.match {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.comparison-item.no-match {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.comparison-status {
    font-weight: 600;
}

.result-item {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
    border-left: 4px solid var(--border-color);
}

.result-item.valid {
    border-left-color: #28a745;
}

.result-item.invalid {
    border-left-color: #dc3545;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.result-header strong {
    color: var(--text-color);
    font-family: 'Courier New', monospace;
}

.result-status {
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.9rem;
}

.result-item.valid .result-status {
    background: #d4edda;
    color: #155724;
}

.result-item.invalid .result-status {
    background: #f8d7da;
    color: #721c24;
}

.result-checks {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.check-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.9rem;
}

.check-item.passed {
    background: #d4edda;
    color: #155724;
}

.check-item.failed {
    background: #f8d7da;
    color: #721c24;
}

.suggestions {
    margin-top: 0.5rem;
    padding: 0.5rem;
    background: #fff3cd;
    border-radius: 4px;
    border: 1px solid #ffeaa7;
}

.suggestions strong {
    color: #856404;
    font-size: 0.9rem;
}

.suggestions ul {
    margin: 0.25rem 0 0 0;
    padding-left: 1.5rem;
}

.suggestions li {
    color: #856404;
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

.email-analysis,
.domain-info {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.domain-details {
    margin-top: 1rem;
}

/* Responsive adjustments for security tools */
@media (max-width: 768px) {
    .algorithms-grid {
        grid-template-columns: 1fr;
    }
    
    .presets-grid {
        grid-template-columns: 1fr;
    }
    
    .password-display {
        flex-direction: column;
        align-items: stretch;
    }
    
    .password-actions {
        width: 100%;
        justify-content: center;
    }
    
    .analysis-grid {
        grid-template-columns: 1fr;
    }
    
    .result-checks {
        grid-template-columns: 1fr;
    }
    
    .result-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .hash-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .password-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .copy-single-btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .password-field {
        flex-direction: column;
        align-items: stretch;
    }
    
    .toggle-visibility {
        width: 100%;
        text-align: center;
    }
    
    .passwords-actions {
        flex-direction: column;
    }
    
    .passwords-actions .btn {
        width: 100%;
    }
}

/* PDF Tools Styles */
.pdf-tools-container {
    max-width: 1000px;
    margin: 0 auto;
}

.upload-section {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.split-options,
.conversion-options,
.password-section {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.split-results,
.conversion-results,
.result-section {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.processing-section,
.conversion-progress {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.processing-content,
.progress-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.processing-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--button-bg);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.processing-steps {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1rem;
}

.step {
    padding: 0.5rem 1rem;
    border-radius: 4px;
    background: var(--card-bg);
    color: var(--text-color);
    font-size: 0.9rem;
}

.step.completed {
    background: #d4edda;
    color: #155724;
}

.step.processing {
    background: #fff3cd;
    color: #856404;
}

.step.error {
    background: #f8d7da;
    color: #721c24;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
    margin: 1rem 0;
}

.progress-fill {
    height: 100%;
    background: var(--button-bg);
    width: 0%;
    transition: width 0.3s ease;
}

.progress-text {
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.progress-details {
    color: var(--footer-color);
    font-size: 0.9rem;
}

.results-summary {
    display: flex;
    gap: 2rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 8px;
    flex-wrap: wrap;
}

.summary-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.summary-item strong {
    color: var(--text-color);
    font-size: 0.9rem;
}

.summary-item span {
    color: var(--button-bg);
    font-weight: 600;
    font-family: 'Courier New', monospace;
    font-size: 1.1rem;
}

.results-list {
    margin: 1rem 0;
}

.result-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.result-info {
    flex: 1;
}

.result-name {
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.25rem;
}

.result-details {
    display: flex;
    gap: 1rem;
    font-size: 0.9rem;
    color: var(--footer-color);
}

.result-actions {
    display: flex;
    gap: 0.5rem;
}

.results-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

.password-form {
    margin: 1rem 0;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-color);
    font-size: 14px;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--button-bg);
}

.form-group small {
    display: block;
    margin-top: 0.25rem;
    color: var(--footer-color);
    font-size: 0.8rem;
}

.password-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem;
    border-radius: 8px;
    background: var(--card-bg);
    margin: 1rem 0;
}

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border-color);
}

.status-indicator.valid {
    background: #28a745;
}

.status-indicator.invalid {
    background: #dc3545;
}

.status-indicator + span {
    font-weight: 600;
    color: var(--text-color);
}

.result-content {
    text-align: center;
}

.result-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.result-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
    text-align: left;
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 8px;
}

.detail-item strong {
    color: var(--text-color);
    font-size: 0.9rem;
}

.detail-item span {
    color: var(--button-bg);
    font-weight: 600;
}

.detail-item .unprotected {
    color: #28a745;
}

.result-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    margin-top: 1.5rem;
}

.error-section {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.error-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.error-icon {
    font-size: 3rem;
    color: #dc3545;
}

.error-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

.images-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin: 1rem 0;
}

.image-item {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 1rem;
    text-align: center;
}

.image-preview {
    margin-bottom: 1rem;
}

.image-preview img {
    max-width: 100%;
    max-height: 200px;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.image-info {
    margin-bottom: 1rem;
}

.image-name {
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.25rem;
}

.image-details {
    font-size: 0.9rem;
    color: var(--footer-color);
}

.image-actions {
    display: flex;
    justify-content: center;
}

/* Responsive adjustments for PDF tools */
@media (max-width: 768px) {
    .results-summary {
        flex-direction: column;
        gap: 1rem;
    }
    
    .result-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .result-actions {
        width: 100%;
        justify-content: center;
    }
    
    .result-details {
        grid-template-columns: 1fr;
    }
    
    .images-grid {
        grid-template-columns: 1fr;
    }
    
    .result-actions,
    .error-actions {
        flex-direction: column;
    }
    
    .result-actions .btn,
    .error-actions .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .processing-steps {
        font-size: 0.8rem;
    }
    
    .step {
        padding: 0.25rem 0.5rem;
    }
    
    .results-actions {
        flex-direction: column;
    }
    
    .results-actions .btn {
        width: 100%;
    }
}

/* GUID Generator Styles */
.guid-options {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.guid-results {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.guid-presets {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.presets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.75rem;
    margin-top: 1rem;
}

.preset-btn {
    padding: 0.75rem 1rem;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-color);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.preset-btn:hover {
    background: var(--button-bg);
    color: white;
    border-color: var(--button-bg);
}

.guids-list {
    margin: 1rem 0;
}

.guid-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 8px;
    margin-bottom: 0.5rem;
    border-left: 4px solid var(--button-bg);
}

.guid-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.guid-number {
    font-weight: 600;
    color: var(--button-bg);
    font-size: 0.9rem;
    min-width: 2rem;
}

.guid-value {
    font-family: 'Courier New', monospace;
    font-size: 1rem;
    color: var(--text-color);
    word-break: break-all;
    line-height: 1.4;
}

.guid-timestamp {
    font-size: 0.8rem;
    color: var(--footer-color);
    font-style: italic;
}

.guid-actions {
    display: flex;
    gap: 0.5rem;
}

.guid-actions .btn {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
    min-width: 60px;
}

/* Responsive adjustments for GUID generator */
@media (max-width: 768px) {
    .presets-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .guid-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .guid-actions {
        width: 100%;
        justify-content: center;
    }
    
    .guid-actions .btn {
        flex: 1;
    }
}

@media (max-width: 480px) {
    .presets-grid {
        grid-template-columns: 1fr;
    }
    
    .guid-value {
        font-size: 0.9rem;
    }
    
    .preset-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.8rem;
    }
}

/* CSV Tools Styles */
.csv-tools-container {
    max-width: 1200px;
    margin: 0 auto;
}

.csv-options {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.csv-preview {
    background: var(--container-bg);
    border-radius: var(--container-radius);
    box-shadow: var(--container-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.preview-controls {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.preview-container {
    overflow-x: auto;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: white;
    max-height: 600px;
    overflow-y: auto;
}

.colored-csv-table {
    width: 100%;
    border-collapse: collapse;
    font-family: 'Segoe UI', Arial, sans-serif;
    font-size: 14px;
    min-width: 100%;
}

.colored-csv-table th {
    text-align: left;
    font-weight: 600;
    position: sticky;
    top: 0;
    z-index: 10;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    background-color: #f8f9fa !important;
}

.colored-csv-table td,
.colored-csv-table th {
    word-wrap: break-word;
    max-width: 200px;
    vertical-align: top;
    line-height: 1.4;
    background-color: white !important;
}

.colored-csv-table td {
    font-weight: 500;
}

.colored-csv-table tr:hover {
    transform: scale(1.01);
    transition: transform 0.1s ease;
}

.colored-csv-table tr:hover td {
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

/* CSV table responsive adjustments */
@media (max-width: 768px) {
    .colored-csv-table {
        font-size: 12px;
    }
    
    .colored-csv-table td,
    .colored-csv-table th {
        padding: 4px !important;
        max-width: 150px;
    }
    
    .preview-controls {
        flex-direction: column;
    }
    
    .preview-controls .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .colored-csv-table {
        font-size: 10px;
    }
    
    .colored-csv-table td,
    .colored-csv-table th {
        padding: 2px !important;
        max-width: 100px;
    }
    
    .preview-container {
        max-height: 400px;
    }
}

/* Image Rotator Styles */
.rotation-controls {
    background: var(--card-bg);
    border-radius: var(--container-radius);
    padding: 2rem;
    margin: 2rem 0;
    box-shadow: var(--container-shadow);
    border: 1px solid var(--border-color);
}

.rotation-buttons, .flip-buttons {
    margin-bottom: 2rem;
}

.rotation-buttons h4, .flip-buttons h4 {
    margin: 0 0 1rem 0;
    color: var(--text-primary);
    font-size: 1.1rem;
}

.button-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.button-group .btn {
    flex: 1;
    min-width: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.reset-section {
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.image-preview-section {
    background: var(--card-bg);
    border-radius: var(--container-radius);
    padding: 2rem;
    margin: 2rem 0;
    box-shadow: var(--container-shadow);
    border: 1px solid var(--border-color);
}

.image-preview-container {
    text-align: center;
    margin: 2rem 0;
}

.image-canvas {
    max-width: 100%;
    max-height: 500px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border-color);
}

.image-info {
    margin-top: 1.5rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    text-align: left;
}

.image-info p {
    margin: 0.5rem 0;
    color: var(--text-secondary);
}

.image-info strong {
    color: var(--text-primary);
}

.download-options {
    display: flex;
    gap: 1rem;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
}

.format-select {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-color);
    color: var(--text-color);
    font-size: 1rem;
}

@media (max-width: 768px) {
    .button-group {
        flex-direction: column;
    }
    
    .button-group .btn {
        min-width: auto;
    }
    
    .download-options {
        flex-direction: column;
        align-items: stretch;
    }
    
    .rotation-controls, .image-preview-section {
        padding: 1rem;
        margin: 1rem 0;
    }
}

/* Scientific Calculator Styles */
.calculator-container {
    background: var(--card-bg);
    border-radius: var(--container-radius);
    padding: 2rem;
    margin: 2rem 0;
    box-shadow: var(--container-shadow);
    border: 1px solid var(--border-color);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.calculator-display {
    background: #1a1a1a;
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    text-align: right;
    min-height: 80px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.display-secondary {
    color: #888;
    font-size: 1rem;
    margin-bottom: 0.5rem;
    min-height: 1.2rem;
}

.display-primary {
    color: #fff;
    font-size: 2rem;
    font-weight: 300;
    font-family: 'Courier New', monospace;
    word-break: break-all;
}

.calculator-buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

/* Scientific Calculator specific layout */
.scientific-calculator-buttons {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.calc-btn {
    padding: 1rem;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.number-btn {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.number-btn:hover {
    background: var(--hover-bg);
    transform: translateY(-1px);
}

.operator-btn {
    background: var(--primary-color);
    color: white;
}

.operator-btn:hover {
    background: #4a5fcf;
    transform: translateY(-1px);
}

.function-btn {
    background: #ff6b6b;
    color: white;
}

.function-btn:hover {
    background: #ff5252;
    transform: translateY(-1px);
}

.scientific-btn {
    background: #4ecdc4;
    color: white;
    font-size: 0.9rem;
}

.scientific-btn:hover {
    background: #26a69a;
    transform: translateY(-1px);
}

.equals-btn {
    background: #2ecc71;
    color: white;
}

.equals-btn:hover {
    background: #27ae60;
    transform: translateY(-1px);
}

.memory-functions {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.memory-btn {
    background: #9b59b6;
    color: white;
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
    flex: 1;
    min-width: 60px;
}

.memory-btn:hover {
    background: #8e44ad;
    transform: translateY(-1px);
}

.angle-mode {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1rem;
}

.angle-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.angle-toggle:hover {
    background: var(--hover-bg);
}

.angle-toggle input[type="radio"] {
    margin: 0;
}

.angle-toggle input[type="radio"]:checked + span {
    color: var(--primary-color);
    font-weight: 600;
}

@media (max-width: 768px) {
    .calculator-container {
        padding: 1rem;
        margin: 1rem 0;
    }
    
    .calc-btn {
        padding: 0.75rem;
        font-size: 1rem;
        min-height: 50px;
    }
    
    .scientific-btn {
        font-size: 0.8rem;
    }
    
    .display-primary {
        font-size: 1.5rem;
    }
    
    .memory-functions {
        gap: 0.25rem;
    }
    
    .memory-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.8rem;
    }
}

/* Audio Converter Styles */
.audio-converter-container {
    background: var(--card-bg);
    border-radius: var(--container-radius);
    padding: 2rem;
    margin: 2rem 0;
    box-shadow: var(--container-shadow);
    border: 1px solid var(--border-color);
}

.conversion-settings {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 1.5rem;
    margin: 2rem 0;
    border: 1px solid var(--border-color);
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.setting-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.setting-group label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.format-select, .quality-select, .sample-rate-select, .bit-depth-select {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-color);
    color: var(--text-color);
    font-size: 1rem;
}

.batch-options {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    font-size: 1rem;
    color: var(--text-primary);
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    position: relative;
    transition: all 0.2s ease;
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 14px;
    font-weight: bold;
}

.file-list {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 1.5rem;
    margin: 2rem 0;
    border: 1px solid var(--border-color);
}

.files-container {
    max-height: 300px;
    overflow-y: auto;
}

.file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 8px;
    margin-bottom: 0.75rem;
    border: 1px solid var(--border-color);
}

.file-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
}

.file-info .material-icons {
    color: var(--primary-color);
    font-size: 2rem;
}

.file-details {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.file-name {
    font-weight: 600;
    color: var(--text-primary);
    word-break: break-all;
}

.file-size {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.file-actions {
    display: flex;
    gap: 0.5rem;
}

.conversion-progress {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 1.5rem;
    margin: 2rem 0;
    border: 1px solid var(--border-color);
    text-align: center;
}

.progress-bar {
    width: 100%;
    height: 20px;
    background: var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    margin: 1rem 0;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), #4a5fcf);
    width: 0%;
    transition: width 0.3s ease;
}

.progress-text {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.current-file {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.conversion-results {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 1.5rem;
    margin: 2rem 0;
    border: 1px solid var(--border-color);
}

.result-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 8px;
}

.stat-item {
    color: var(--text-primary);
    font-size: 0.9rem;
}

.converted-files {
    max-height: 300px;
    overflow-y: auto;
}

.converted-file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 8px;
    margin-bottom: 0.75rem;
    border: 1px solid var(--border-color);
}

.converted-file-item .file-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.converted-file-item .file-info .material-icons {
    color: #2ecc71;
}

.download-all {
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.info-section {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 1.5rem;
    margin: 2rem 0;
    border: 1px solid var(--border-color);
}

.format-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.format-item {
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.features-list ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.features-list li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 1.5rem;
}

.features-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

@media (max-width: 768px) {
    .settings-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .file-item, .converted-file-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .file-actions {
        width: 100%;
        justify-content: flex-end;
    }
    
    .result-stats {
        grid-template-columns: 1fr;
    }
    
    .format-info {
        grid-template-columns: 1fr;
    }
}

/* Stopwatch and Timer Styles */
.stopwatch-container, .timer-container {
    background: var(--card-bg);
    border-radius: var(--container-radius);
    padding: 3rem 2rem;
    margin: 2rem 0;
    box-shadow: var(--container-shadow);
    border: 1px solid var(--border-color);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.time-display {
    text-align: center;
    margin-bottom: 3rem;
}

.time-digits {
    font-size: 5rem;
    font-weight: 300;
    font-family: 'Courier New', monospace;
    color: var(--primary-color);
    letter-spacing: 0.1em;
    text-shadow: 0 2px 4px rgba(102, 126, 234, 0.3);
}

.control-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin: 2rem 0;
    flex-wrap: wrap;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    min-width: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-large .material-icons {
    font-size: 1.5rem;
}

.btn-warning {
    background: #ff9800;
    color: white;
    border: 1px solid #ff9800;
}

.btn-warning:hover {
    background: #f57c00;
    border-color: #f57c00;
}

.laps-container {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.laps-container h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.laps-list {
    max-height: 400px;
    overflow-y: auto;
}

.lap-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    margin-bottom: 0.75rem;
    border: 1px solid var(--border-color);
}

.lap-number {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1.1rem;
}

.lap-times {
    text-align: right;
}

.lap-time {
    font-family: 'Courier New', monospace;
    font-size: 1.2rem;
    color: var(--primary-color);
    font-weight: 600;
}

.lap-total {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* Timer-specific styles */
.time-input {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin: 2rem 0;
}

.input-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.input-group label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.time-input-field {
    width: 80px;
    height: 60px;
    font-size: 2rem;
    text-align: center;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-color);
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
    transition: all 0.3s ease;
}

.time-input-field:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.input-separator {
    font-size: 2.5rem;
    color: var(--text-secondary);
    font-weight: 300;
    margin-top: 1.5rem;
}

.presets-container {
    margin: 2rem 0;
}

.presets-container h3 {
    text-align: center;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-size: 1.1rem;
}

.presets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 0.75rem;
}

@media (max-width: 768px) {
    .stopwatch-container, .timer-container {
        padding: 2rem 1rem;
    }
    
    .time-digits {
        font-size: 3rem;
    }
    
    .control-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn-large {
        min-width: auto;
    }
    
    .time-input-field {
        width: 60px;
        height: 50px;
        font-size: 1.5rem;
    }
    
    .input-separator {
        font-size: 2rem;
        margin-top: 1rem;
    }
    
    .lap-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .lap-times {
        text-align: left;
    }
    
    .presets-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}