/* backup.css - Fully mobile-responsive design */

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #a5b4fc;
    --secondary: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    
    --border-light: #e2e8f0;
    --border-medium: #cbd5e1;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
}

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

html {
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.5;
    color: var(--text-primary);
    background: var(--bg-secondary);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Layout */
.container {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding: var(--spacing-sm);
}

@media (min-width: 640px) {
    .container {
        max-width: 640px;
        padding: var(--spacing-md);
    }
}

@media (min-width: 768px) {
    .container {
        max-width: 768px;
        padding: var(--spacing-lg);
    }
}

@media (min-width: 1024px) {
    .container {
        max-width: 1024px;
        padding: var(--spacing-xl);
    }
}

@media (min-width: 1280px) {
    .container {
        max-width: 1280px;
    }
}

/* Header */
.header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-md);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-light);
}

.header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    line-height: 1.2;
}

.header p {
    color: var(--text-secondary);
    font-size: 1rem;
    max-width: 600px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .header h1 {
        font-size: 2rem;
    }
    
    .header p {
        font-size: 1.125rem;
    }
}

/* Grid Layout */
.main-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    width: 100%;
}

@media (min-width: 768px) {
    .main-content {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xl);
    }
    
    .section-full {
        grid-column: 1 / -1;
    }
}

/* Cards - FIXED WIDTH ISSUE */
.card {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all 0.2s ease;
    height: 100%;
    width: 100%;
    overflow: hidden; /* Prevent content overflow */
}

.card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

@media (min-width: 640px) {
    .card {
        padding: var(--spacing-lg);
    }
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-light);
    flex-wrap: wrap;
}

.card-header .icon {
    font-size: 1.25rem;
    color: var(--primary);
    flex-shrink: 0;
}

.card-header h2 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    flex: 1;
    min-width: 0; /* Fix flexbox overflow */
    word-wrap: break-word;
}

@media (min-width: 768px) {
    .card-header h2 {
        font-size: 1.25rem;
    }
}

.card-desc {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 0.9375rem;
    line-height: 1.6;
    word-wrap: break-word;
}

@media (min-width: 768px) {
    .card-desc {
        font-size: 1rem;
    }
}

/* Buttons - FIXED FOR MOBILE */
.btn-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
    width: 100%;
}

@media (min-width: 640px) {
    .btn-group {
        flex-direction: row;
        flex-wrap: wrap;
    }
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius-sm);
    border: none;
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    white-space: nowrap;
    width: 100%;
    min-height: 44px; /* Touch target minimum */
}

@media (min-width: 640px) {
    .btn {
        width: auto;
        min-width: 140px;
        flex: 1;
    }
}

.btn-sm {
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
}

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

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

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

.btn-secondary:hover {
    background: #0da271;
    transform: translateY(-1px);
}

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

.btn-warning:hover {
    background: #d97706;
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-medium);
}

.btn-outline:hover {
    background: var(--bg-tertiary);
    border-color: var(--text-secondary);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* File Input - FIXED FOR MOBILE */
.file-input {
    margin: var(--spacing-md) 0;
    width: 100%;
}

.file-input-label {
    display: block;
    width: 100%;
    padding: var(--spacing-md);
    border: 2px dashed var(--border-medium);
    border-radius: var(--border-radius);
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    background: var(--bg-secondary);
    overflow: hidden;
}

.file-input-label:hover {
    border-color: var(--primary);
    background: var(--bg-tertiary);
}

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

.file-input-label .file-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    flex-wrap: wrap;
    word-break: break-word;
}

/* Options */
.options-group {
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
    width: 100%;
}

.option-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    width: 100%;
}

.option-item:last-child {
    margin-bottom: 0;
}

.option-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.option-item label {
    cursor: pointer;
    color: var(--text-primary);
    flex: 1;
    font-size: 0.9375rem;
    min-width: 0;
    word-wrap: break-word;
}

.option-desc {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: block;
    line-height: 1.4;
}

/* Status Messages */
.status {
    padding: var(--spacing-md);
    border-radius: var(--border-radius-sm);
    margin: var(--spacing-md) 0;
    animation: fadeIn 0.3s ease;
    border-left: 4px solid transparent;
    width: 100%;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

.status-success {
    background: #f0fdf4;
    color: #166534;
    border-left-color: #22c55e;
}

.status-error {
    background: #fef2f2;
    color: #991b1b;
    border-left-color: #ef4444;
}

.status-warning {
    background: #fffbeb;
    color: #92400e;
    border-left-color: #f59e0b;
}

.status-info {
    background: #eff6ff;
    color: #1e40af;
    border-left-color: #3b82f6;
}

.status-loading {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-left-color: var(--primary);
}

/* Stats Preview - FIXED SCROLLING */
.stats-preview {
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-sm);
    margin: var(--spacing-md) 0;
    max-height: 300px;
    overflow-x: auto;
    overflow-y: auto;
    width: 100%;
    -webkit-overflow-scrolling: touch; /* Smooth scrolling on iOS */
}

.stats-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
    min-width: 300px; /* Ensure table has minimum width */
}

.stats-table th {
    text-align: left;
    padding: 0.75rem 0.5rem;
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 2px solid var(--border-light);
    white-space: nowrap;
}

.stats-table td {
    padding: 0.75rem 0.5rem;
    border-bottom: 1px solid var(--border-light);
    word-break: break-word;
}

.stats-table tr:hover {
    background: rgba(99, 102, 241, 0.05);
}

.status-badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
    white-space: nowrap;
}

.badge-success {
    background: #dcfce7;
    color: #166534;
}

.badge-error {
    background: #fee2e2;
    color: #991b1b;
}

/* Note Box */
.note-box {
    background: var(--bg-tertiary);
    border-left: 4px solid var(--warning);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-sm);
    margin: var(--spacing-md) 0;
    width: 100%;
    word-wrap: break-word;
}

.note-box strong {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
    font-size: 0.9375rem;
}

.note-box p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
    margin: 0;
}

/* Loading */
.loading {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
    flex-shrink: 0;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.btn-loading .loading {
    margin-right: var(--spacing-xs);
}

/* Navigation */
.nav-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-light);
    width: 100%;
}

@media (min-width: 640px) {
    .nav-links {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }
}

.nav-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
    text-align: center;
    width: 100%;
    min-height: 44px;
}

@media (min-width: 640px) {
    .nav-link {
        width: auto;
        min-width: 160px;
        flex: 1;
        max-width: 200px;
    }
}

.nav-link:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary);
    color: var(--primary);
}

/* Mobile Optimizations - EXTRA SAFETY */
@media (max-width: 639px) {
    .container {
        padding: var(--spacing-sm);
    }
    
    .card {
        padding: var(--spacing-md);
        margin-left: 0;
        margin-right: 0;
    }
    
    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    
    .card-header h2 {
        font-size: 1rem;
    }
    
    .btn {
        font-size: 0.9375rem;
        padding: 0.75rem;
    }
    
    .status {
        font-size: 0.875rem;
        padding: var(--spacing-sm);
    }
    
    .stats-table {
        font-size: 0.8125rem;
    }
    
    .stats-table th,
    .stats-table td {
        padding: 0.5rem 0.25rem;
    }
}

/* Prevent horizontal overflow globally */
body, .container, .main-content, .card, .btn-group,
.file-input, .options-group, .status, .stats-preview {
    max-width: 100vw;
    overflow-x: hidden;
}

/* Fix for iOS Safari viewport issues */
@supports (-webkit-touch-callout: none) {
    .container {
        padding-left: env(safe-area-inset-left);
        padding-right: env(safe-area-inset-right);
    }
    
    body {
        padding-bottom: env(safe-area-inset-bottom);
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus Styles */
button:focus,
input:focus,
a:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Utility Classes */
.text-center { text-align: center; }
.mt-2 { margin-top: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.hidden { display: none; }

/* Collapsible Sections */
.collapsible-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
    cursor: pointer;
    user-select: none;
    padding: var(--spacing-md);
    margin: calc(-1 * var(--spacing-md));
    margin-bottom: 0;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    transition: background-color 0.2s ease;
}

.collapsible-header:hover {
    background-color: var(--bg-tertiary);
}

@media (min-width: 640px) {
    .collapsible-header {
        padding: var(--spacing-lg);
        margin: calc(-1 * var(--spacing-lg));
        margin-bottom: 0;
    }
}

.collapsible-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex: 1;
}

.collapsible-title .icon {
    font-size: 1.25rem;
    color: var(--primary);
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.collapsible-title h2 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    transition: color 0.2s ease;
}

@media (min-width: 768px) {
    .collapsible-title h2 {
        font-size: 1.25rem;
    }
}

.collapsible-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: transparent;
    border: 1px solid var(--border-medium);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.collapsible-toggle:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary);
    color: var(--primary);
}

.collapsible-toggle .material-symbols-outlined {
    font-size: 1.25rem;
    transition: transform 0.3s ease;
}

.collapsible-content {
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.2s ease;
    opacity: 1;
}

.collapsible-content.collapsed {
    max-height: 0 !important;
    opacity: 0;
}

.collapsible-content.expanded {
    max-height: 5000px; /* Large enough to accommodate content */
    opacity: 1;
}

/* Expand/Collapse All Buttons */
.collapse-controls {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.collapse-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-medium);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.collapse-btn .material-symbols-outlined {
    font-size: 1rem;
}

/* Section State Indicators */
.section-state {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-left: auto;
    padding-left: var(--spacing-sm);
}

/* Animation for collapse/expand */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.collapsible-content > * {
    animation: fadeInUp 0.3s ease;
}
/* Header Section Fixes */
.header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-md);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-light);
    width: 100%;
    max-width: 100%;
}

.header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    line-height: 1.2;
    padding: 0 var(--spacing-sm);
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

.header p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.5;
    max-width: 100%;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    margin-top: var(--spacing-xs);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* Collapse Controls Container */
.collapse-controls {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    margin-bottom: 0;
    padding: var(--spacing-md) var(--spacing-sm);
    width: 100%;
    max-width: 100%;
    flex-wrap: wrap;
}

.collapse-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.625rem 1rem;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-medium);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: 40px;
    min-width: 120px;
    flex: 1;
    max-width: 160px;
}

.collapse-btn .material-symbols-outlined {
    font-size: 1rem;
}

@media (min-width: 640px) {
    .header {
        padding: var(--spacing-lg);
        padding-bottom: var(--spacing-xl);
    }
    
    .header h1 {
        font-size: 1.75rem;
        padding: 0;
    }
    
    .header p {
        font-size: 1rem;
        max-width: 600px;
        padding: 0;
    }
    
    .collapse-controls {
        padding: var(--spacing-lg) var(--spacing-md);
        gap: var(--spacing-md);
    }
    
    .collapse-btn {
        flex: 0 1 auto;
        min-width: 140px;
    }
}

@media (min-width: 768px) {
    .header h1 {
        font-size: 2rem;
    }
    
    .header p {
        font-size: 1.125rem;
    }
}

/* Mobile-specific fixes */
@media (max-width: 639px) {
    .header {
        padding: var(--spacing-sm);
        padding-bottom: var(--spacing-md);
    }
    
    .header h1 {
        font-size: 1.25rem;
        padding: 0 var(--spacing-xs);
        margin-bottom: var(--spacing-xs);
    }
    
    .header p {
        font-size: 0.875rem;
        padding: 0 var(--spacing-xs);
        line-height: 1.4;
    }
    
    .collapse-controls {
        padding: var(--spacing-sm);
        gap: var(--spacing-xs);
        margin-top: var(--spacing-md);
    }
    
    .collapse-btn {
        min-width: calc(50% - var(--spacing-xs));
        font-size: 0.8125rem;
        padding: 0.5rem 0.75rem;
    }
    
    .collapse-btn .material-symbols-outlined {
        font-size: 0.875rem;
    }
}

/* Fix for very small screens */
@media (max-width: 375px) {
    .header h1 {
        font-size: 1.125rem;
        line-height: 1.3;
    }
    
    .header p {
        font-size: 0.8125rem;
        line-height: 1.3;
    }
    
    .collapse-btn {
        min-width: 100%;
        margin-bottom: var(--spacing-xs);
    }
    
    .collapse-btn:last-child {
        margin-bottom: 0;
    }
}

/* Ensure no horizontal overflow in header */
.header * {
    max-width: 100%;
    box-sizing: border-box;
}
/* DEBUG: Show padding boundaries */
.debug-header * {
    outline: 1px solid rgba(255, 0, 0, 0.1);
}

.debug-header {
    outline: 2px solid blue;
    background: rgba(0, 0, 255, 0.05);
}

.debug-header .header-content {
    outline: 2px solid green;
    background: rgba(0, 255, 0, 0.05);
}