/* ===== CSS Variables ===== */
:root {
    /* Colors */
    --primary-color: #4f46e5;
    --primary-dark: #4338ca;
    --secondary-color: #10b981;
    --accent-color: #f59e0b;
    --danger-color: #ef4444;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    
    /* Text Colors */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-card: #ffffff;
    --bg-hover: #f1f5f9;
    
    /* Border & Shadow */
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Typography */
    --font-family: 'Noto Nastaliq Urdu', 'Jameel Noori Nastaleeq', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
}

/* ===== Dark Theme ===== */
[data-theme="dark"] {
    --primary-color: #6366f1;
    --primary-dark: #5b5fc7;
    --secondary-color: #34d399;
    --accent-color: #fbbf24;
    
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-light: #9ca3af;
    
    --bg-primary: #111827;
    --bg-secondary: #1f2937;
    --bg-card: #374151;
    --bg-hover: #4b5563;
    
    --border-color: #4b5563;
    --border-light: #374151;
    
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.3), 0 1px 2px 0 rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
}

/* ===== Base Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    color: var(--text-primary);
    line-height: 1.6;
    transition: all 0.3s ease;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ===== Header Styles ===== */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-primary);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.logo-section {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.logo-icon {
    font-size: 2rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.lang-select {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-primary);
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s ease;
}

.lang-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.theme-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.theme-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ===== Hero Section ===== */
.hero-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
    padding: var(--space-xl) 0;
    min-height: 80vh;
}

.hero-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--space-lg);
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--space-md);
    background: linear-gradient(135deg, var(--text-primary), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.8;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.feature-card {
    background: var(--bg-card);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--border-light);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
}

.feature-card h4 {
    font-size: 1.1rem;
    margin-bottom: var(--space-xs);
    color: var(--text-primary);
}

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

/* Hero Visual */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.conversion-animation {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.file-card {
    background: var(--bg-card);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--border-light);
    transition: all 0.3s ease;
    min-width: 120px;
}

.file-card:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-xl);
}

.pdf-card {
    border-color: var(--primary-color);
}

.text-card {
    border-color: var(--secondary-color);
}

.file-icon {
    font-size: 3rem;
    margin-bottom: var(--space-sm);
}

.arrow-container {
    position: relative;
}

.animated-arrow {
    font-size: 2rem;
    color: var(--primary-color);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(10px); }
}

.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.floating-element {
    position: absolute;
    font-size: 1.5rem;
    animation: floatElement 6s ease-in-out infinite;
}

.floating-element:nth-child(1) {
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.floating-element:nth-child(2) {
    top: 60%;
    right: 20%;
    animation-delay: 2s;
}

.floating-element:nth-child(3) {
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

@keyframes floatElement {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(10px, -10px) rotate(5deg); }
    66% { transform: translate(-5px, 5px) rotate(-5deg); }
}

/* ===== Converter Section ===== */
.converter-section {
    padding: var(--space-xl) 0;
}

.converter-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    border: 1px solid var(--border-light);
}

.card-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
}

.card-header h3 {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-primary);
}

.file-info {
    margin-top: var(--space-sm);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Upload Area */
.upload-container {
    padding: var(--space-xl);
}

.upload-area {
    border: 3px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.upload-area::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.upload-area:hover::before {
    transform: scaleX(1);
}

.upload-area:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.upload-area.drag-over {
    border-color: var(--secondary-color);
    background: rgba(16, 185, 129, 0.1);
}

.upload-icon {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: var(--space-md);
    transition: all 0.3s ease;
}

.upload-area:hover .upload-icon {
    transform: scale(1.1);
    color: var(--secondary-color);
}

.upload-area h4 {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.upload-area p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.file-types {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.file-type-badge {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
}

.file-size {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.browse-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-family: inherit;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    box-shadow: var(--shadow);
}

.browse-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
}

/* Options Section */
.options-section {
    padding: var(--space-lg);
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.options-section h4 {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-md);
}

.option-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

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

.option-select {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-card);
    color: var(--text-primary);
    font-family: inherit;
    transition: all 0.3s ease;
}

.option-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

/* Action Section */
.action-section {
    padding: var(--space-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.convert-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    padding: 1.25rem 2rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-family: inherit;
    font-size: 1.2rem;
    font-weight: 600;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.convert-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
}

.convert-btn:disabled {
    background: var(--text-light);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.convert-btn:disabled:hover {
    transform: none;
}

.btn-icon {
    font-size: 1.1rem;
}

.secondary-actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.action-btn {
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-card);
    color: var(--text-primary);
    cursor: pointer;
    font-family: inherit;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.action-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.action-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.copy-btn:hover:not(:disabled) {
    background: var(--secondary-color);
    color: white;
    border-color: var(--secondary-color);
}

.download-btn:hover:not(:disabled) {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.clear-btn:hover {
    background: var(--danger-color);
    color: white;
    border-color: var(--danger-color);
}

/* Progress Section */
.progress-section {
    padding: var(--space-lg);
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.progress-header h4 {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-primary);
}

.progress-text {
    font-weight: 600;
    color: var(--primary-color);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--border-color);
    border-radius: 50px;
    overflow: hidden;
    margin-bottom: var(--space-md);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 50px;
    transition: width 0.3s ease;
    width: 0%;
}

.progress-stats {
    display: flex;
    gap: var(--space-lg);
}

.stat-item {
    display: flex;
    gap: var(--space-xs);
}

.stat-label {
    color: var(--text-secondary);
}

.stat-value {
    color: var(--text-primary);
    font-weight: 600;
}

/* Results Section */
.results-section {
    padding: var(--space-lg);
    border-top: 1px solid var(--border-color);
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.results-header h4 {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-primary);
}

.text-stats {
    display: flex;
    gap: var(--space-md);
}

.stat-badge {
    background: var(--bg-secondary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.stat-badge i {
    color: var(--primary-color);
}

.preview-container {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    overflow: hidden;
}

.preview-content {
    max-height: 400px;
    overflow-y: auto;
    padding: var(--space-lg);
    font-family: 'Noto Nastaliq Urdu', serif;
    line-height: 2;
    text-align: right;
    white-space: pre-wrap;
    direction: rtl;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.preview-content::-webkit-scrollbar {
    width: 8px;
}

.preview-content::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

.preview-content::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.preview-content::-webkit-scrollbar-thumb:hover {
    background: var(--text-light);
}

.results-actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    margin-top: var(--space-md);
}

.share-btn:hover {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

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

/* ===== Features Section ===== */
.features-section {
    padding: var(--space-xl) 0;
    text-align: center;
}

.features-section h3 {
    font-size: 2.5rem;
    margin-bottom: var(--space-xl);
    color: var(--text-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.feature-item {
    background: var(--bg-card);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--border-light);
}

.feature-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.feature-item .feature-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.feature-item h4 {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.feature-item p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    margin-top: var(--space-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
    padding: var(--space-xl) 0;
}

.footer-section h4 {
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    font-size: 1.2rem;
}

.footer-section p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.footer-section a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: var(--space-xs);
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border-radius: 50%;
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding: var(--space-md) 0;
    text-align: center;
    color: var(--text-secondary);
}

/* ===== Loading Spinner ===== */
.loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    display: none;
}

.loading-spinner.active {
    display: block;
}

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

/* ===== Notifications ===== */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--success-color);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 1rem;
    animation: slideIn 0.3s ease;
    max-width: 400px;
}

.notification-error {
    background: var(--danger-color);
}

.notification-success {
    background: var(--success-color);
}

.notification-info {
    background: var(--primary-color);
}

.notification-warning {
    background: var(--warning-color);
}

.notification-close {
    background: none;
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background 0.3s ease;
}

.notification-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOut {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-sm);
    }
    
    .header {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
    
    .hero-section {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-lg);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .conversion-animation {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .options-grid {
        grid-template-columns: 1fr;
    }
    
    .secondary-actions {
        flex-direction: column;
    }
    
    .action-btn {
        justify-content: center;
    }
    
    .results-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .text-stats {
        width: 100%;
        justify-content: space-between;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .upload-container {
        padding: var(--space-md);
    }
    
    .upload-area {
        padding: var(--space-lg);
    }
    
    .browse-btn {
        width: 100%;
        justify-content: center;
    }
    
    .convert-btn {
        padding: 1rem 1.5rem;
        font-size: 1rem;
    }
}

/* ===== Utility Classes ===== */
.text-center {
    text-align: center;
}

.mb-0 {
    margin-bottom: 0;
}

.mt-1 {
    margin-top: var(--space-xs);
}

.mt-2 {
    margin-top: var(--space-sm);
}

.mt-3 {
    margin-top: var(--space-md);
}

.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

.fade-in {
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ===== Print Styles ===== */
@media print {
    .header,
    .action-section,
    .results-actions,
    .footer {
        display: none !important;
    }
    
    .preview-content {
        max-height: none;
        border: none;
        box-shadow: none;
    }
}