:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #f1f3f5;
    --text-primary: #1a1a1a;
    --text-secondary: #5a5f6b;
    --text-tertiary: #7a7f8b;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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);
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;

    /* Accent colors for stat cards */
    --accent-blue: #1976d2;
    --accent-blue-bg: #e3f2fd;
    --accent-green: #388e3c;
    --accent-green-bg: #e8f5e9;
    --accent-orange: #f57c00;
    --accent-orange-bg: #fff3e0;
    --accent-pink: #c2185b;
    --accent-pink-bg: #fce4ec;
    --accent-purple: #7b1fa2;
    --accent-purple-bg: #f3e5f5;
    --accent-indigo: #3f51b5;
    --accent-indigo-bg: #e8eaf6;
    --accent-teal: #00897b;
    --accent-teal-bg: #e0f2f1;

    /* Design Tokens - Spacing Scale */
    --space-xs: 0.25rem;  /* 4px */
    --space-sm: 0.5rem;   /* 8px */
    --space-md: 1rem;     /* 16px */
    --space-lg: 1.5rem;   /* 24px */
    --space-xl: 2rem;     /* 32px */
    --space-2xl: 3rem;    /* 48px */

    /* Design Tokens - Border Radius Scale */
    --radius-sm: 0.25rem;   /* 4px */
    --radius-md: 0.5rem;    /* 8px */
    --radius-lg: 0.75rem;   /* 12px */
    --radius-xl: 1rem;      /* 16px */
    --radius-full: 9999px;  /* Pill */

    /* Design Tokens - Typography Scale */
    --text-xs: 0.75rem;    /* 12px */
    --text-sm: 0.875rem;   /* 14px */
    --text-base: 1rem;     /* 16px */
    --text-lg: 1.125rem;   /* 18px */
    --text-xl: 1.25rem;    /* 20px */
    --text-2xl: 1.5rem;    /* 24px */
    --text-3xl: 2rem;      /* 32px */
    --text-4xl: 2.5rem;    /* 40px */

    /* Design Tokens - Font Weights */
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;

    /* Design Tokens - Z-Index Scale */
    --z-dropdown: 1000;
    --z-sticky: 100;
    --z-fixed: 50;
    --z-base: 0;

    /* Design Tokens - Line Heights */
    --line-tight: 1.25;
    --line-normal: 1.5;
    --line-relaxed: 1.75;
}

[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #262626;
    --bg-tertiary: #2d2d2d;
    --text-primary: #ffffff;
    --text-secondary: #a3a3a3;
    --text-tertiary: #737373;
    --border-color: #404040;

    /* Adjusted accent colors for dark mode */
    --accent-blue: #42a5f5;
    --accent-blue-bg: #1e3a5f;
    --accent-green: #66bb6a;
    --accent-green-bg: #1b5e20;
    --accent-orange: #ffb74d;
    --accent-orange-bg: #e65100;
    --accent-pink: #ec407a;
    --accent-pink-bg: #880e4f;
    --accent-purple: #ab47bc;
    --accent-purple-bg: #4a148c;
    --accent-indigo: #5c6bc0;
    --accent-indigo-bg: #1a237e;
    --accent-teal: #26a69a;
    --accent-teal-bg: #004d40;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Screen reader only - visually hidden but accessible to assistive technology */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Shared focus base styles - reduces duplication */
*:focus-visible,
.card-hover:focus-visible,
.directory-card:focus-visible,
a:focus-visible,
.icon-btn:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Enhanced focus styles for interactive elements */
.card-hover:focus-visible {
    box-shadow: 0 8px 12px -2px rgba(0, 0, 0, 0.15);
}

.icon-btn:focus-visible {
    background-color: var(--bg-tertiary);
}

/* Primary button keeps white outline for contrast */
.btn-primary:focus-visible {
    outline: 2px solid white;
    outline-offset: 2px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Navbar */
.navbar {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-icon {
    color: var(--primary-color);
}

.brand-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.brand-subtitle {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.625rem; /* Increased from 0.5rem for better touch target */
    border-radius: 0.5rem;
    transition: all 0.2s;
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.user-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.user-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* Page Header */
.page-header {
    margin-bottom: 2rem;
}

.welcome-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.welcome-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
}

/* Tabs */
.tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.tab {
    padding: 0.75rem 1.5rem;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
    text-decoration: none;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
}

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

.tab:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: -2px;
    background-color: var(--bg-secondary);
    border-radius: 0.5rem;
}

.tab.active,
.tab[aria-selected="true"] {
    color: var(--text-primary);
    border-bottom-color: var(--primary-color);
    border-bottom-width: 3px;
    background: var(--bg-secondary);
    border-radius: 0.5rem 0.5rem 0 0;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stats-group {
    padding: 1.5rem;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    margin-bottom: 2rem;
}

.stats-group-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.stats-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

/* Shared card base styles */
.stat-card,
.card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.2s;
    height: 100%;
    min-height: 110px;
}

.stat-card-clickable {
    cursor: pointer;
    position: relative;
}

.stat-card-clickable::after {
    content: '→';
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0;
    transition: opacity 0.2s;
    font-size: 1.25rem;
    color: var(--primary-color);
}

.stat-card-clickable:hover {
    box-shadow: 0 8px 16px -4px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

.stat-card-clickable:hover::after {
    opacity: 1;
}

.stat-card-clickable:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

[data-theme="dark"] .stat-card-clickable:hover {
    box-shadow: 0 8px 16px -4px rgba(0, 0, 0, 0.4);
}

.stat-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Icon color classes */
.stat-icon-blue {
    background: var(--accent-blue-bg);
    color: var(--accent-blue);
}

.stat-icon-green {
    background: var(--accent-green-bg);
    color: var(--accent-green);
}

.stat-icon-orange {
    background: var(--accent-orange-bg);
    color: var(--accent-orange);
}

.stat-icon-pink {
    background: var(--accent-pink-bg);
    color: var(--accent-pink);
}

.stat-icon-purple {
    background: var(--accent-purple-bg);
    color: var(--accent-purple);
}

.stat-icon-indigo {
    background: var(--accent-indigo-bg);
    color: var(--accent-indigo);
}

.stat-icon-teal {
    background: var(--accent-teal-bg);
    color: var(--accent-teal);
}

.stat-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.25rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    background: var(--bg-tertiary);
    padding: 0.5rem 0.75rem;
    border-radius: 0.5rem;
    display: inline-block;
}

/* Section */
section {
    width: 100%;
}

/* Content Grid */
.content-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    align-items: start;
    width: 100%;
    max-width: 100%;
}

.content-grid > a {
    display: block;
    text-decoration: none;
    color: inherit;
    min-width: 0;
}

.card {
    height: 100%;
}

.card.full-width {
    grid-column: 1 / -1;
}

.card-hover {
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card-hover:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 12px -2px rgba(0, 0, 0, 0.15);
}

[data-theme="dark"] .card-hover:hover {
    box-shadow: 0 8px 12px -2px rgba(0, 0, 0, 0.4);
}

/* Card link styling */
.card-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.card-link:focus-visible {
    outline: none; /* Outline will be on card */
}

.card-link .card:focus-visible,
.card-link .stat-card:focus-visible,
.card-link .directory-card:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Card description text */
.card-description {
    margin-top: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Client label styling */
.client-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.card-action {
    margin-top: 1rem;
}

.mindmap-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.mindmap-link:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

.card-header {
    margin-bottom: 1.5rem;
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

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

.card-content p {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.card-content p:last-of-type {
    margin-bottom: 0;
}

/* Schema Button Group */
.schema-button-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.schema-button-group .btn-primary {
    width: 100%;
}

/* Language List */
.language-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.language-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background-color: var(--bg-secondary);
    border-radius: 0.5rem;
}

.language-name {
    font-weight: 500;
    color: var(--text-primary);
}

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

/* Directory Grid */
.directory-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.directory-card {
    padding: 1rem;
    background-color: var(--bg-secondary);
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    transition: all 0.2s;
}

.directory-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* Directory card accent border colors */
.directory-card-accent-purple {
    border-left: 3px solid #9C27B0;
}

.directory-card-accent-blue {
    border-left: 3px solid var(--accent-blue);
}

.directory-card-accent-green {
    border-left: 3px solid var(--accent-green);
}

.directory-card-accent-orange {
    border-left: 3px solid var(--accent-orange);
}

.directory-card-accent-pink {
    border-left: 3px solid var(--accent-pink);
}

.directory-card-accent-indigo {
    border-left: 3px solid var(--accent-indigo);
}

.directory-card-accent-teal {
    border-left: 3px solid var(--accent-teal);
}

.directory-card.search-hidden,
.card.search-hidden {
    display: none;
}

.directory-card h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.directory-files {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.directory-lang {
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

/* Button */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    min-height: 44px;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Search Container */
.search-container {
    position: sticky;
    top: 68px; /* 4rem navbar + 1rem padding + 4px border */
    z-index: 50;
    background: var(--bg-secondary);
    padding: 1rem;
    margin: 0 -1rem 1.5rem -1rem;
    border-radius: 0.75rem;
}

.search-input {
    width: 100%;
    padding: 0.875rem 1rem 0.875rem 3rem;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 0.75rem;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: all 0.2s;
}

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

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    pointer-events: none;
}

.search-results-count {
    margin-top: 0.5rem;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    text-align: center;
    background: var(--bg-tertiary);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    padding: 0.75rem 1rem;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--primary-color);
    border-radius: 0.5rem;
    font-size: 0.875rem;
    box-shadow: var(--shadow-sm);
}

.breadcrumb-link {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s;
}

.breadcrumb-link:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

.breadcrumb-current {
    color: var(--text-primary);
    font-weight: 500;
}

/* Responsive */
/* Tablet improvements (768px to 1024px) */
@media (max-width: 1024px) {
    .container {
        padding: 1.5rem;
    }

    .navbar {
        padding: 1rem;
    }

    .welcome-title {
        font-size: 1.75rem;
    }

    .stats-list {
        grid-template-columns: repeat(2, 1fr);
    }

    .content-grid {
        grid-template-columns: 1fr;
    }

    .mindmap-container {
        grid-template-columns: 1fr;
    }

    .directory-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }

    .search-container {
        top: 64px; /* Adjusted for tablet */
    }
}

/* Mobile improvements (phones - 768px and below) */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .stats-group {
        padding: 1rem;
    }

    .stats-list {
        grid-template-columns: 1fr;
    }

    .stat-card {
        min-height: auto;
        padding: 1rem;
    }

    .stat-value {
        font-size: 2rem;
    }

    .content-grid {
        grid-template-columns: 1fr;
    }

    .navbar {
        padding: 1rem;
    }

    .navbar-brand {
        gap: 0.5rem;
    }

    .brand-title {
        font-size: 1.125rem;
    }

    .brand-subtitle {
        display: none; /* Hide on mobile to save space */
    }

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

    .breadcrumb {
        flex-wrap: wrap;
        font-size: 0.75rem;
    }

    .directory-grid {
        grid-template-columns: 1fr;
    }

    .tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .tab {
        white-space: nowrap;
    }

    .search-container {
        top: 60px; /* Adjusted for mobile */
        margin: 0;
        padding: 0.75rem;
    }
}

/* Tab content switching */
.tab-content {
    display: none;
}

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

/* Mindmap container */
#mindmap {
    width: 100%;
    height: 600px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    background: var(--bg-primary);
}

@media (max-width: 768px) {
    #mindmap {
        height: 400px;
    }
}

/* ========================================
   Schema Item Styles - Clickable Schema Type Cards
   ======================================== */

/* Schema Item List Container */
.schema-item-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

/* Schema Item - Interactive Container */
.schema-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: inherit;
    transition: all 0.2s ease;
    cursor: pointer;
    position: relative;
}

.schema-item:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--primary-color);
    transform: translateX(4px);
    box-shadow: 0 2px 8px -1px rgba(79, 70, 229, 0.15);
}

[data-theme="dark"] .schema-item:hover {
    box-shadow: 0 2px 8px -1px rgba(79, 70, 229, 0.3);
}

.schema-item:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.schema-item:active {
    transform: translateX(2px);
}

/* Schema Item Name */
.schema-item-name {
    font-weight: var(--font-medium);
    color: var(--text-primary);
    flex: 1;
}

/* Schema Instance Count Badge */
.schema-item-count {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    background-color: var(--bg-primary);
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-sm);
    margin: 0 0.75rem;
    white-space: nowrap;
}

/* Arrow Icon */
.schema-item-arrow {
    width: 18px;
    height: 18px;
    color: var(--primary-color);
    opacity: 0;
    transition: opacity 0.2s, transform 0.2s;
    flex-shrink: 0;
}

.schema-item:hover .schema-item-arrow {
    opacity: 1;
    transform: translateX(2px);
}

/* Touch target compliance for mobile */
@media (max-width: 768px) {
    .schema-item {
        padding: 1.125rem 1rem;
        min-height: 48px;
    }
}

/* =====================================================
   TYPE COLLECTION PAGES STYLES
   ===================================================== */

/* Breadcrumb Navigation */
.breadcrumb {
    margin-bottom: var(--space-lg);
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--border-color);
}

.breadcrumb ol {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.breadcrumb li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.breadcrumb li:not(:last-child)::after {
    content: "›";
    margin-left: var(--space-sm);
    color: var(--text-tertiary);
    font-size: var(--text-lg);
}

.breadcrumb a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s;
}

.breadcrumb a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

.breadcrumb li[aria-current="page"] {
    color: var(--text-primary);
    font-weight: var(--font-medium);
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
}

.header-content h1 {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    margin: 0 0 var(--space-sm) 0;
    line-height: var(--line-tight);
}

.header-content .subtitle {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--line-normal);
}

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

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-md);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    min-width: 100px;
}

.stat-value {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    color: var(--primary-color);
    line-height: 1;
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-top: var(--space-xs);
}

/* Controls Section */
.controls-section {
    display: flex;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
    align-items: center;
}

/* Search Box */
.search-box {
    position: relative;
    flex: 1;
    min-width: 250px;
}

.search-box input[type="search"] {
    width: 100%;
    padding: var(--space-md) var(--space-md) var(--space-md) 2.75rem;
    font-size: var(--text-base);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: all 0.2s;
}

.search-box input[type="search"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.search-icon {
    position: absolute;
    left: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    pointer-events: none;
}

/* Sort Controls */
.sort-controls {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.sort-controls label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    font-weight: var(--font-medium);
}

.sort-controls select {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s;
}

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

.sort-order-btn {
    padding: var(--space-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sort-order-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

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

/* State Containers */
.loading-state,
.error-state,
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-2xl);
    text-align: center;
    min-height: 300px;
}

/* Loading Spinner */
.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-state p {
    margin-top: var(--space-lg);
    color: var(--text-secondary);
}

/* Error State */
.error-state {
    color: #dc2626;
}

.error-message {
    font-size: var(--text-lg);
    margin-bottom: var(--space-lg);
}

.error-state button {
    padding: var(--space-md) var(--space-xl);
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    cursor: pointer;
    transition: background-color 0.2s;
}

.error-state button:hover {
    background-color: var(--primary-hover);
}

/* Empty State */
.empty-state p {
    font-size: var(--text-lg);
    color: var(--text-secondary);
}

/* Results Header */
.results-header {
    margin-bottom: var(--space-lg);
}

.results-header h2 {
    font-size: var(--text-2xl);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
}

/* Schema Grid */
.schema-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--space-lg);
    list-style: none;
    margin: 0;
    padding: 0;
}

/* Schema Card */
.schema-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.2s;
}

.schema-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.schema-card-link {
    display: block;
    text-decoration: none;
    color: inherit;
    height: 100%;
}

.schema-card-link:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Schema Card Header */
.schema-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-color);
}

.schema-card-title {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin: 0;
    line-height: var(--line-tight);
    word-break: break-word;
}

.schema-type-badge {
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    color: var(--primary-color);
    background-color: rgba(79, 70, 229, 0.1);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    white-space: nowrap;
}

/* Schema Card Stats */
.schema-card-stats {
    display: flex;
    gap: var(--space-lg);
    padding: var(--space-lg);
}

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

.stat-icon {
    font-size: var(--text-lg);
}

.stat-text {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

/* Schema Card Languages */
.schema-card-languages {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    padding: 0 var(--space-lg) var(--space-lg) var(--space-lg);
}

.language-tag {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    background-color: var(--bg-tertiary);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    white-space: nowrap;
}

/* Schema Card Footer */
.schema-card-footer {
    padding: var(--space-lg);
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-primary);
}

.view-details {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--primary-color);
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
}

.schema-card:hover .view-details {
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-lg);
    }

    .header-content h1 {
        font-size: var(--text-2xl);
    }

    .controls-section {
        flex-direction: column;
        align-items: stretch;
    }

    .search-box {
        min-width: 100%;
    }

    .sort-controls {
        width: 100%;
        justify-content: space-between;
    }

    .schema-grid {
        grid-template-columns: 1fr;
    }

    .schema-card-stats {
        flex-direction: column;
        gap: var(--space-sm);
    }
}