/**
 * DILG Legal Opinions Archive - Stylesheet
 * Professional legal document theme based on DILG branding
 */

/* ========================================
   CSS Variables & Base Styles
   ======================================== */
:root {
    /* DILG Brand Colors */
    --dilg-blue: #1e3a5f;
    --dilg-blue-dark: #152d4a;
    --dilg-blue-light: #2a5298;
    --dilg-gold: #c9a227;
    --dilg-gold-light: #e8c84a;

    /* UI Colors */
    --primary: #3A559F;
    --primary-dark: #2a4080;
    --primary-light: #50ABF1;
    --secondary: #28a745;
    --accent: #c9a227;

    /* Semantic Colors */
    --success: #28a745;
    --warning: #ffc107;
    --danger: #dc3545;
    --info: #17a2b8;

    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-serif: 'Crimson Pro', Georgia, 'Times New Roman', serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--gray-100);
    color: var(--gray-800);
    line-height: 1.6;
    min-height: 100vh;
}

/* ========================================
   App Container & Layout
   ======================================== */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ========================================
   Header
   ======================================== */
.header {
    background: linear-gradient(135deg, var(--dilg-blue) 0%, var(--dilg-blue-dark) 100%);
    color: var(--white);
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--dilg-gold) 0%, var(--dilg-gold-light) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm);
}

.logo-icon svg {
    width: 100%;
    height: 100%;
    stroke: var(--dilg-blue-dark);
}

.logo-text h1 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.logo-text span {
    font-size: 0.75rem;
    opacity: 0.85;
    font-weight: 400;
}

.header-nav {
    display: flex;
    gap: var(--spacing-sm);
}

.nav-btn {
    width: 40px;
    height: 40px;
    border: none;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.nav-btn svg {
    width: 20px;
    height: 20px;
    stroke: var(--white);
}

.nav-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

/* ========================================
   Hero Section & Search
   ======================================== */
.hero-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--dilg-blue) 100%);
    padding: var(--spacing-2xl) var(--spacing-lg);
    color: var(--white);
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.hero-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.hero-subtitle {
    font-size: 1rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
}

.search-container {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-xl);
}

.search-box {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.search-icon {
    width: 48px;
    height: 48px;
    background: var(--gray-100);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.search-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--primary);
}

.search-input-wrapper {
    flex: 1;
    display: flex;
    gap: var(--spacing-sm);
}

.search-input {
    flex: 1;
    padding: var(--spacing-md);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    color: var(--gray-800);
    transition: var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(58, 85, 159, 0.1);
}

.search-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    background: linear-gradient(135deg, var(--primary) 0%, var(--dilg-blue) 100%);
    color: var(--white);
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: var(--transition-fast);
}

.search-btn svg {
    width: 20px;
    height: 20px;
}

.search-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Search Filters */
.search-filters {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--gray-200);
    margin-bottom: var(--spacing-md);
}

.filter-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.filter-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-600);
}

.filter-select, .filter-input {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--gray-700);
    background: var(--white);
    min-width: 150px;
}

.filter-select:focus, .filter-input:focus {
    outline: none;
    border-color: var(--primary);
}

.filter-clear-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--gray-100);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    color: var(--gray-600);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.filter-clear-btn:hover {
    background: var(--gray-200);
}

/* Quick Searches */
.quick-searches {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.quick-searches span {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.quick-search-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(58, 85, 159, 0.1);
    border: 1px solid var(--primary);
    border-radius: var(--radius-full);
    color: var(--primary);
    font-size: 0.8rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

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

/* ========================================
   Content Area Layout
   ======================================== */
.content-area {
    display: flex;
    flex: 1;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    padding: var(--spacing-lg);
    gap: var(--spacing-lg);
}

/* Sidebar */
.sidebar {
    width: 280px;
    flex-shrink: 0;
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    height: fit-content;
    position: sticky;
    top: 80px;
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--gray-200);
}

.sidebar-header h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--gray-700);
}

.sidebar-toggle {
    width: 28px;
    height: 28px;
    border: none;
    background: var(--gray-100);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-toggle svg {
    width: 16px;
    height: 16px;
    stroke: var(--gray-500);
}

.year-nav, .category-nav {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    max-height: 300px;
    overflow-y: auto;
}

.year-nav a, .category-nav a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--gray-700);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    transition: var(--transition-fast);
}

.year-nav a:hover, .category-nav a:hover {
    background: var(--gray-100);
    color: var(--primary);
}

.year-nav a.active, .category-nav a.active {
    background: var(--primary);
    color: var(--white);
}

.year-nav .count, .category-nav .count {
    background: var(--gray-200);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
}

.year-nav a.active .count, .category-nav a.active .count {
    background: rgba(255, 255, 255, 0.2);
}

.sidebar-section {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--gray-200);
}

.sidebar-section h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: var(--spacing-md);
}

.sidebar-footer {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--gray-200);
}

.stats-summary {
    display: flex;
    justify-content: space-around;
}

.stat-item {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--gray-500);
}

/* Main Panel */
.main-panel {
    flex: 1;
    min-width: 0;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--white);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.results-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

#resultsCount {
    font-weight: 600;
    color: var(--gray-700);
}

.results-time {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.results-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.sort-control {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.sort-control label {
    font-size: 0.875rem;
    color: var(--gray-600);
}

.sort-select {
    padding: var(--spacing-sm);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
}

.view-toggle {
    width: 36px;
    height: 36px;
    border: 1px solid var(--gray-300);
    background: var(--white);
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.view-toggle svg {
    width: 18px;
    height: 18px;
    stroke: var(--gray-600);
}

/* Results Container */
.results-container {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    min-height: 400px;
}

/* Welcome State */
.welcome-state {
    text-align: center;
    padding: var(--spacing-2xl);
}

.welcome-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, rgba(58, 85, 159, 0.1) 0%, rgba(201, 162, 39, 0.1) 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
}

.welcome-icon svg {
    width: 48px;
    height: 48px;
    stroke: var(--primary);
}

.welcome-content h2 {
    font-size: 1.5rem;
    color: var(--gray-800);
    margin-bottom: var(--spacing-sm);
}

.welcome-content > p {
    color: var(--gray-600);
    margin-bottom: var(--spacing-xl);
}

/* Feature Cards */
.feature-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.feature-card {
    background: var(--gray-50);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition-fast);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--primary) 0%, var(--dilg-blue) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--white);
}

.feature-card h4 {
    font-size: 1rem;
    color: var(--gray-800);
    margin-bottom: var(--spacing-xs);
}

.feature-card p {
    font-size: 0.875rem;
    color: var(--gray-600);
}

/* Recent Opinions */
.recent-opinions {
    text-align: left;
}

.recent-opinions h4 {
    font-size: 1rem;
    color: var(--gray-700);
    margin-bottom: var(--spacing-md);
}

.recent-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.recent-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--gray-50);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
}

.recent-item:hover {
    background: var(--gray-100);
}

.recent-item-title {
    flex: 1;
    font-size: 0.875rem;
    color: var(--gray-700);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.recent-item-ref {
    font-size: 0.75rem;
    color: var(--primary);
    font-weight: 500;
    flex-shrink: 0;
    margin-left: var(--spacing-md);
}

/* Loading State */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
}

.loading-spinner {
    position: relative;
    width: 60px;
    height: 60px;
    margin-bottom: var(--spacing-md);
}

.loading-spinner.small {
    width: 30px;
    height: 30px;
}

.spinner-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 3px solid transparent;
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.spinner-ring:nth-child(2) {
    width: 80%;
    height: 80%;
    top: 10%;
    left: 10%;
    border-top-color: var(--accent);
    animation-duration: 0.8s;
}

.spinner-ring:nth-child(3) {
    width: 60%;
    height: 60%;
    top: 20%;
    left: 20%;
    border-top-color: var(--primary-light);
    animation-duration: 0.6s;
}

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

.loading-state p {
    color: var(--gray-500);
    font-size: 0.9rem;
}

/* Results List */
.results-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.result-item {
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: var(--transition-fast);
}

.result-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
}

.result-ref {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
    font-family: var(--font-mono);
}

.result-year {
    font-size: 0.75rem;
    background: var(--gray-200);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    color: var(--gray-600);
}

.result-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.result-summary {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.result-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    font-size: 0.8rem;
    color: var(--gray-500);
}

.result-meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.result-categories {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.category-tag {
    padding: 2px 8px;
    background: rgba(58, 85, 159, 0.1);
    color: var(--primary);
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    font-weight: 500;
}

/* Keyword Highlight */
.highlight {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: #92400e;
    padding: 1px 4px;
    border-radius: 3px;
    font-weight: 600;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--gray-200);
}

.page-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    color: var(--gray-700);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.page-btn:hover:not(:disabled) {
    background: var(--gray-100);
    border-color: var(--primary);
    color: var(--primary);
}

.page-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.page-btn svg {
    width: 16px;
    height: 16px;
}

.page-numbers {
    display: flex;
    gap: var(--spacing-xs);
}

.page-number {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    color: var(--gray-700);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.page-number:hover {
    background: var(--gray-100);
}

.page-number.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

/* Document View */
.document-state {
    padding: var(--spacing-md);
}

.document-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--gray-200);
}

.back-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--gray-100);
    border: none;
    border-radius: var(--radius-md);
    color: var(--gray-700);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.back-btn:hover {
    background: var(--gray-200);
}

.back-btn svg {
    width: 16px;
    height: 16px;
}

.document-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.doc-action-btn {
    width: 36px;
    height: 36px;
    border: 1px solid var(--gray-300);
    background: var(--white);
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.doc-action-btn svg {
    width: 18px;
    height: 18px;
    stroke: var(--gray-600);
}

.doc-action-btn:hover {
    background: var(--gray-100);
}

.document-content {
    font-family: var(--font-serif);
    line-height: 1.8;
}

.doc-meta {
    background: var(--gray-50);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.doc-meta-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.doc-meta-item {
    display: flex;
    flex-direction: column;
}

.doc-meta-label {
    font-size: 0.75rem;
    color: var(--gray-500);
    font-family: var(--font-sans);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.doc-meta-value {
    font-size: 0.95rem;
    color: var(--gray-800);
    font-family: var(--font-sans);
    font-weight: 500;
}

.doc-title {
    font-size: 1.25rem;
    color: var(--gray-800);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--accent);
}

.doc-body {
    font-size: 1rem;
    color: var(--gray-700);
    white-space: pre-wrap;
}

/* No Results State */
.no-results-state {
    text-align: center;
    padding: var(--spacing-2xl);
}

.no-results-content svg {
    width: 64px;
    height: 64px;
    stroke: var(--gray-400);
    margin-bottom: var(--spacing-md);
}

.no-results-content h3 {
    font-size: 1.25rem;
    color: var(--gray-700);
    margin-bottom: var(--spacing-sm);
}

.no-results-content p {
    color: var(--gray-500);
    margin-bottom: var(--spacing-lg);
}

.retry-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.retry-btn:hover {
    background: var(--primary-dark);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--gray-800);
    color: var(--gray-400);
    padding: var(--spacing-lg);
    margin-top: auto;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.footer-info .separator {
    color: var(--gray-600);
}

.footer-legal {
    font-size: 0.875rem;
}

/* ========================================
   Modals
   ======================================== */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal[hidden] {
    display: none;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
}

.modal-content {
    position: relative;
    background: var(--white);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.modal-lg {
    max-width: 800px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
}

.modal-header h3 {
    font-size: 1.25rem;
    color: var(--gray-800);
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--gray-100);
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close svg {
    width: 18px;
    height: 18px;
    stroke: var(--gray-600);
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    max-height: calc(90vh - 100px);
}

/* Help Tabs */
.help-tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
    padding-bottom: var(--spacing-md);
}

.help-tab {
    padding: var(--spacing-sm) var(--spacing-md);
    background: none;
    border: none;
    color: var(--gray-600);
    font-size: 0.9rem;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: var(--transition-fast);
}

.help-tab:hover {
    color: var(--primary);
}

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

.help-panel {
    display: none;
}

.help-panel.active {
    display: block;
}

.help-panel h4 {
    font-size: 1.1rem;
    color: var(--gray-800);
    margin-bottom: var(--spacing-md);
}

.help-panel h5 {
    font-size: 0.95rem;
    color: var(--gray-700);
    margin: var(--spacing-md) 0 var(--spacing-sm);
}

.help-panel ul {
    list-style: none;
    padding: 0;
}

.help-panel li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--gray-100);
    font-size: 0.9rem;
    color: var(--gray-600);
}

.help-panel li:last-child {
    border-bottom: none;
}

.help-panel kbd {
    display: inline-block;
    padding: 2px 6px;
    background: var(--gray-100);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.stats-card {
    background: var(--gray-50);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
}

.stats-card-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.stats-card-label {
    font-size: 0.875rem;
    color: var(--gray-600);
}

/* ========================================
   Toast Notifications
   ======================================== */
.toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--gray-800);
    color: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease;
}

.toast.success {
    background: var(--success);
}

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

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

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
    .content-area {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        position: static;
    }

    .year-nav, .category-nav {
        flex-direction: row;
        flex-wrap: wrap;
        max-height: none;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    .logo-text h1 {
        font-size: 1.1rem;
    }

    .hero-title {
        font-size: 1.5rem;
    }

    .search-box {
        flex-direction: column;
    }

    .search-icon {
        display: none;
    }

    .search-input-wrapper {
        flex-direction: column;
    }

    .search-filters {
        flex-direction: column;
    }

    .filter-group {
        width: 100%;
    }

    .filter-select, .filter-input {
        width: 100%;
    }

    .results-header {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: flex-start;
    }

    .feature-cards {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .quick-searches {
        display: none;
    }

    .page-numbers {
        display: none;
    }

    .modal-content {
        width: 95%;
        max-height: 95vh;
    }
}

/* Print Styles */
@media print {
    .header, .footer, .sidebar, .search-container, .results-header, .pagination {
        display: none !important;
    }

    .main-panel {
        width: 100%;
    }

    .document-content {
        padding: 0;
    }
}