/* Inequality Atlas - Dark Glassmorphism Design */

/* CSS Custom Properties */
:root {
    /* Colors - Dark Theme */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #1a1a24;
    --bg-card-hover: #1f1f2e;

    /* Text */
    --text-primary: #f0f0f5;
    --text-secondary: #a0a0b0;
    --text-muted: #606070;

    /* Borders & Dividers */
    --border: #2a2a35;
    --border-hover: #3a3a45;

    /* Accent Colors */
    --accent: #4a9eff;
    --accent-hover: #6bb1ff;

    /* Data Visualization Colors - Color-blind safe palette */
    --color-low: #3b82f6;      /* Blue - Low inequality */
    --color-medium: #10b981;   /* Teal - Medium */
    --color-high: #f59e0b;     /* Amber - High */
    --color-very-high: #a855f7; /* Purple - Very high (color-blind safe) */

    /* Gradient for maps - Color-blind safe (blue → amber → purple) */
    --gradient-start: #3b82f6;
    --gradient-mid: #f59e0b;
    --gradient-end: #a855f7;

    /* Status Colors */
    --success: #22c55e;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;

    /* Glassmorphism */
    --glass-bg: rgba(26, 26, 36, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);

    /* 8px Grid Spacing System */
    --spacing-1: 0.25rem;   /* 4px */
    --spacing-2: 0.5rem;    /* 8px - base unit */
    --spacing-3: 0.75rem;   /* 12px */
    --spacing-4: 1rem;      /* 16px */
    --spacing-5: 1.25rem;   /* 20px */
    --spacing-6: 1.5rem;    /* 24px */
    --spacing-8: 2rem;      /* 32px */
    --spacing-10: 2.5rem;   /* 40px */
    --spacing-12: 3rem;     /* 48px */
    --spacing-16: 4rem;     /* 64px */

    /* Legacy aliases for compatibility */
    --spacing-xs: var(--spacing-1);
    --spacing-sm: var(--spacing-2);
    --spacing-md: var(--spacing-4);
    --spacing-lg: var(--spacing-6);
    --spacing-xl: var(--spacing-8);
    --spacing-2xl: var(--spacing-12);

    /* Typography Scale (1.25 ratio - Major Third) */
    --font-xs: 0.75rem;     /* 12px */
    --font-sm: 0.875rem;    /* 14px */
    --font-base: 1rem;      /* 16px */
    --font-lg: 1.125rem;    /* 18px */
    --font-xl: 1.25rem;     /* 20px */
    --font-2xl: 1.5rem;     /* 24px */
    --font-3xl: 1.875rem;   /* 30px */
    --font-4xl: 2.25rem;    /* 36px */

    /* Line Heights (for vertical rhythm) */
    --leading-tight: 1.25;
    --leading-normal: 1.5;
    --leading-relaxed: 1.75;

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

    /* Transitions with easing functions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-medium: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Motion preferences */
    --motion-safe-duration: 250ms;
    --motion-reduced-duration: 0ms;

    /* Glass Effects (consolidated from glassmorphism.css) */
    --glass-blur-subtle: 8px;
    --glass-blur: 16px;
    --glass-blur-strong: 24px;
    --glass-bg-dark: rgba(10, 10, 15, 0.88);
    --glass-bg-medium: rgba(20, 20, 28, 0.82);
    --glass-bg-light: rgba(32, 32, 42, 0.75);
    --glass-bg-subtle: rgba(45, 45, 58, 0.6);
    --glass-border-subtle: rgba(255, 255, 255, 0.06);
    --glass-border-light: rgba(255, 255, 255, 0.1);
    --glass-border-medium: rgba(255, 255, 255, 0.15);
    --glass-border-accent: rgba(74, 158, 255, 0.3);

    /* Glow Effects */
    --glow-subtle: 0 0 15px rgba(74, 158, 255, 0.08);
    --glow-accent: 0 0 20px rgba(74, 158, 255, 0.15);
    --glow-hover: 0 0 30px rgba(74, 158, 255, 0.25);
    --glow-focus: 0 0 0 3px rgba(74, 158, 255, 0.4);

    /* Shadow Scale */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.35);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.45);
    --shadow-2xl: 0 24px 64px rgba(0, 0, 0, 0.55);
    --panel-shadow: var(--shadow-lg), var(--glow-subtle);

    /* Animation Easing */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
    --spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
        'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Skip Links for Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--accent);
    color: white;
    padding: 8px 16px;
    text-decoration: none;
    border-radius: 0 0 4px 0;
    z-index: 10000;
    font-weight: 600;
}

.skip-link:focus {
    top: 0;
    outline: 3px solid var(--accent-hover);
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
}

/* Header */
header {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-card) 100%);
    border-bottom: 1px solid var(--border);
    padding: var(--spacing-2xl) 0;
    text-align: center;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--accent), #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.description {
    color: var(--text-muted);
    font-size: 0.95rem;
    max-width: 600px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    h1 {
        font-size: 1.8rem;
    }
    .subtitle {
        font-size: 1rem;
    }
}

/* Main Content */
main {
    padding: var(--spacing-2xl) 0;
}

/* Card Component */
.card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--glass-shadow);
    transition: border-color var(--transition-medium);
}

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

.card-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

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

/* Panel Select (controls panel dropdowns) */
.panel-select {
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    transition: border-color var(--transition-fast);
}

.panel-select:hover { border-color: var(--border-hover); }
.panel-select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.1); }

/* Layer Color Dot */
.layer-color {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

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

.control-label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Form Elements */
select,
input[type="search"] {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    padding: 0.625rem 0.875rem;
    font-size: 0.95rem;
    transition: all var(--transition-fast);
    width: 100%;
}

select:hover,
input[type="search"]:hover {
    border-color: var(--border-hover);
}

select:focus,
input[type="search"]:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.1);
}

/* Buttons */
.btn {
    padding: 0.625rem 1.25rem;
    border: 1px solid var(--border);
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    white-space: nowrap;
    /* Touch target minimum 44px */
    min-height: 44px;
    min-width: 44px;
}

.btn:hover {
    background: var(--accent);
    border-color: var(--accent);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(74, 158, 255, 0.2);
}

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

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.3);
}

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

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

.btn-secondary {
    background: var(--bg-card);
}

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

/* Map Section */
.map-section {
    min-height: 500px;
}

.map-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    align-items: start;
}

.map-layout.drawer-open {
    grid-template-columns: minmax(0, 1fr) 320px;
}

.map-container {
    position: relative;
    width: 100%;
    /* Responsive height: min of fixed height or viewport-relative */
    height: min(500px, 60vh);
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
    /* Ensure touch events work properly */
    touch-action: pan-x pan-y;
}

#county-map {
    display: block;
}

.profile-drawer {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
    opacity: 0;
    transform: translateX(12px);
    transition: opacity var(--transition-medium), transform var(--transition-medium);
    pointer-events: none;
}

.map-layout.drawer-open .profile-drawer {
    opacity: 1;
    transform: translateX(0);
    pointer-events: auto;
}

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

.profile-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.profile-year {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.profile-content {
    display: grid;
    gap: var(--spacing-sm);
}

.profile-empty {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.profile-county {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-primary);
}

.profile-category {
    display: inline-flex;
    align-self: start;
    padding: 0.2rem 0.55rem;
    border-radius: 999px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.profile-list {
    display: grid;
    gap: var(--spacing-xs);
}

.profile-row {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-sm);
    border-bottom: 1px solid var(--border);
    padding-bottom: var(--spacing-xs);
}

.profile-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.profile-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

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

.profile-close {
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    padding: 0.2rem 0.5rem;
    cursor: pointer;
}

.profile-close:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
}

/* Map SVG Styles */
.county {
    stroke: var(--border);
    stroke-width: 0.5;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.county:hover {
    stroke: var(--text-primary);
    stroke-width: 1.5;
    filter: brightness(1.2);
}

.county:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.county.selected {
    stroke: var(--accent);
    stroke-width: 2;
}

.county.no-data {
    fill: var(--bg-secondary);
    opacity: 0.3;
}

/* Legend */
.legend-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

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

.gradient-bar {
    width: 200px;
    height: 12px;
    border-radius: 6px;
    background: linear-gradient(to right, var(--gradient-start), var(--gradient-mid), var(--gradient-end));
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.legend-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.legend-note {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-style: italic;
}

/* Extremes */
.extremes-section {
    margin-top: var(--spacing-lg);
}

.extremes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-md);
}

.extremes-title {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.extremes-list {
    list-style: none;
    display: grid;
    gap: var(--spacing-xs);
    margin: 0;
    padding: 0;
}

.extremes-item {
    width: 100%;
    text-align: left;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.5rem 0.7rem;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--spacing-sm);
    cursor: pointer;
    color: inherit;
}

.extremes-item:hover {
    border-color: var(--border-hover);
}

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

.extremes-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.extremes-value {
    font-weight: 600;
    color: var(--text-primary);
    align-self: center;
}

.extremes-note {
    margin-top: var(--spacing-sm);
    font-size: 0.85rem;
    color: var(--text-muted);
}

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

.stat-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: all var(--transition-medium);
}

.stat-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.stat-icon {
    font-size: 2rem;
    opacity: 0.8;
}

.stat-content {
    flex: 1;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-xs);
}

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

/* Table Section */
.table-section {
    overflow: hidden;
}

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

.table-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.search-box {
    min-width: 250px;
}

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

/* Table Styles */
.table-wrapper {
    overflow-x: auto;
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-sm);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.data-table thead {
    background: var(--bg-secondary);
    position: sticky;
    top: 0;
    z-index: 10;
}

.data-table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border);
    white-space: nowrap;
}

.data-table th.sortable {
    cursor: pointer;
    user-select: none;
}

.sort-btn {
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0;
    width: 100%;
}

.sort-btn:hover {
    color: var(--accent);
}

.sort-icon {
    font-size: 0.75rem;
    opacity: 0.5;
}

.data-table tbody tr {
    border-bottom: 1px solid var(--border);
    transition: background-color var(--transition-fast);
}

.data-table tbody tr:hover {
    background: var(--bg-card-hover);
}

.data-table tbody tr.selected {
    background: rgba(74, 158, 255, 0.1);
    border-color: var(--accent);
}

.data-table td {
    padding: var(--spacing-md);
    color: var(--text-secondary);
}

.data-table td:first-child {
    font-weight: 600;
    color: var(--text-primary);
}

/* Category Badges */
.category-badge {
    display: inline-block;
    padding: 0.25rem 0.625rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.category-low {
    background: rgba(59, 130, 246, 0.2);
    color: var(--color-low);
}

.category-medium {
    background: rgba(16, 185, 129, 0.2);
    color: var(--color-medium);
}

.category-high {
    background: rgba(245, 158, 11, 0.2);
    color: var(--color-high);
}

.category-very-high {
    background: rgba(168, 85, 247, 0.2);
    color: var(--color-very-high);
}

/* Pagination Controls */
.pagination-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

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

.page-number {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.9rem;
}

.page-number:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.page-number.active {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
    font-weight: 600;
}

.page-number.ellipsis {
    cursor: default;
    border: none;
    background: transparent;
}

.page-number.ellipsis:hover {
    border: none;
    color: var(--text-secondary);
}

/* Tooltip */
.tooltip {
    position: absolute;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
    pointer-events: none;
    z-index: 1000;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    max-width: 300px;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.tooltip.visible {
    opacity: 1;
}

.tooltip-title {
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.tooltip-content {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.tooltip-row {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
}

.tooltip-label {
    font-weight: 500;
}

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

/* Footer */
.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: var(--spacing-xl) 0;
    text-align: center;
    margin-top: var(--spacing-2xl);
}

.site-footer p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.footer-note {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .map-container {
        height: 400px;
    }

    .map-layout.drawer-open {
        grid-template-columns: 1fr;
    }

    .profile-drawer {
        transform: translateY(12px);
    }

    .map-layout.drawer-open .profile-drawer {
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    .controls-grid {
        grid-template-columns: 1fr;
    }

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

    .map-container {
        height: 350px;
    }

    .table-header {
        flex-direction: column;
        align-items: stretch;
    }

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

    .search-box {
        min-width: unset;
    }

    .data-table {
        font-size: 0.85rem;
    }

    .data-table th,
    .data-table td {
        padding: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    :root {
        font-size: 14px;
    }

    h1 {
        font-size: 1.5rem;
    }

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

    .map-container {
        height: 300px;
    }

    .gradient-bar {
        width: 150px;
    }

    .stat-card {
        padding: var(--spacing-md);
    }

    .stat-icon {
        font-size: 1.5rem;
    }

    .stat-value {
        font-size: 1.2rem;
    }
}

/* Print Styles */
@media print {
    body {
        background: white;
        color: black;
    }

    .controls-panel,
    .site-footer,
    .skip-link,
    .pagination-controls {
        display: none;
    }

    .card {
        border: 1px solid #000;
        box-shadow: none;
        break-inside: avoid;
    }
}

/* Light Mode Theme */
[data-theme="light"] {
    --bg-primary: #e8ecf0;
    --bg-secondary: #f1f5f9;
    --bg-card: #ffffff;
    --bg-card-hover: #f8fafc;

    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;

    --border: #94a3b8;
    --border-hover: #64748b;

    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(0, 0, 0, 0.15);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);

    /* Glass light mode overrides */
    --glass-bg-dark: rgba(255, 255, 255, 0.9);
    --glass-bg-medium: rgba(255, 255, 255, 0.85);
    --glass-bg-light: rgba(255, 255, 255, 0.75);
    --glass-bg-subtle: rgba(255, 255, 255, 0.6);
    --glass-border-subtle: rgba(0, 0, 0, 0.05);
    --glass-border-light: rgba(0, 0, 0, 0.08);
    --glass-border-medium: rgba(0, 0, 0, 0.12);
    --glass-border-accent: rgba(59, 130, 246, 0.3);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.15);
}

/* Respect system preference for light mode */
@media (prefers-color-scheme: light) {
    :root:not([data-theme="dark"]) {
        --bg-primary: #e8ecf0;
        --bg-secondary: #f1f5f9;
        --bg-card: #ffffff;
        --bg-card-hover: #f8fafc;

        --text-primary: #1e293b;
        --text-secondary: #475569;
        --text-muted: #64748b;

        --border: #94a3b8;
        --border-hover: #64748b;

        --glass-bg: rgba(255, 255, 255, 0.85);
        --glass-border: rgba(0, 0, 0, 0.15);
        --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --border: #ffffff;
        --text-secondary: #ffffff;
    }
}

/* Theme Toggle Button (in header) */
.theme-toggle {
    width: 40px;
    height: 40px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.theme-toggle:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent);
}

.theme-toggle:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--color-focus-ring, rgba(74, 158, 255, 0.3));
}

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

    html {
        scroll-behavior: auto;
    }
}

/* Layer Controls */
.layers-panel {
    animation: fadeIn 0.3s ease-in;
}

.layers-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.layers-grid {
    background: var(--card-bg, #ffffff);
    padding: 0.75rem;
    border-radius: 6px;
    border: 1px solid var(--border, #e2e8f0);
}

.layer-checkbox-label {
    user-select: none;
    transition: opacity 0.2s ease;
}

.layer-checkbox-label:hover {
    opacity: 0.8;
}

.layer-checkbox-label input[type="checkbox"] {
    /* Touch target minimum 44px with visual checkbox inside */
    width: 24px;
    height: 24px;
    accent-color: var(--primary, #3b82f6);
    cursor: pointer;
}

/* Increase touch target via padding on label */
.layer-checkbox-label {
    padding: 0.5rem;
    margin: -0.5rem;
    border-radius: var(--radius-sm);
}

.layer-checkbox-label:active {
    background: var(--bg-card-hover);
}

.layer-checkbox-label input[type="checkbox"]:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

.layers-note {
    font-style: italic;
}

/* Layer Visualization */
.layer-group {
    pointer-events: none;
}

.layer-point {
    cursor: pointer;
    pointer-events: all;
    transition: r 0.2s ease, fill-opacity 0.2s ease;
}

.layer-point:hover {
    r: 5;
    fill-opacity: 1;
}

.county.has-layer-ufo {
    cursor: help;
}

.county.has-layer-food-deserts {
    cursor: help;
}

.county.has-layer-geology {
    cursor: help;
}

/* Layer-specific styling */
svg .county.has-layer-food-deserts {
    stroke: #10b981 !important;
    stroke-width: 2px !important;
}

svg .county.has-layer-geology {
    stroke: #ef4444 !important;
    stroke-width: 2px !important;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   LOADING SKELETON STYLES
   ============================================ */

/* Skeleton Pulse Animation */
@keyframes skeleton-pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* Skeleton Shimmer Animation */
@keyframes skeleton-shimmer {
    0% {
        background-position: -200px 0;
    }
    100% {
        background-position: calc(200px + 100%) 0;
    }
}

/* Base Skeleton Class */
.skeleton {
    background: var(--bg-secondary);
    background-image: linear-gradient(
        90deg,
        var(--bg-secondary) 0px,
        rgba(255, 255, 255, 0.05) 40px,
        var(--bg-secondary) 80px
    );
    background-size: 200px 100%;
    background-repeat: no-repeat;
    border-radius: var(--radius-sm);
    animation: skeleton-pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite,
               skeleton-shimmer 2s linear infinite;
    position: relative;
    overflow: hidden;
}

/* Skeleton Map Container */
.skeleton-map {
    width: 100%;
    height: 500px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    position: relative;
    overflow: hidden;
}

.skeleton-map::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.03) 50%,
        transparent 100%
    );
    background-size: 200px 100%;
    background-repeat: no-repeat;
    animation: skeleton-shimmer 2s linear infinite;
}

/* Skeleton Line Variants */
.skeleton-line {
    height: 1rem;
    width: 100%;
    margin-bottom: var(--spacing-xs);
}

.skeleton-line--sm {
    height: 0.875rem;
    width: 60%;
}

.skeleton-line--md {
    height: 1rem;
    width: 80%;
}

.skeleton-line--lg {
    height: 1.25rem;
    width: 90%;
}

/* Skeleton Stat Card */
.skeleton-stat {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.skeleton-stat-icon {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: var(--bg-secondary);
    flex-shrink: 0;
}

.skeleton-stat-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.skeleton-stat-label {
    height: 0.75rem;
    width: 60%;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
}

.skeleton-stat-value {
    height: 1.5rem;
    width: 40%;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
}

/* Skeleton Table Row */
.skeleton-table-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border);
}

.skeleton-table-cell {
    height: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
}

.skeleton-table-cell--wide {
    width: 80%;
}

.skeleton-table-cell--narrow {
    width: 60%;
}

/* Skeleton Profile Drawer */
.skeleton-profile {
    display: grid;
    gap: var(--spacing-sm);
}

.skeleton-profile-header {
    height: 1.5rem;
    width: 70%;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
}

.skeleton-profile-badge {
    height: 1.5rem;
    width: 40%;
    background: var(--bg-secondary);
    border-radius: 999px;
    margin-bottom: var(--spacing-md);
}

.skeleton-profile-row {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-sm);
    padding-bottom: var(--spacing-xs);
    border-bottom: 1px solid var(--border);
}

.skeleton-profile-row:last-child {
    border-bottom: none;
}

.skeleton-profile-label {
    height: 0.875rem;
    width: 45%;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
}

.skeleton-profile-value {
    height: 0.875rem;
    width: 30%;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
}

/* Skeleton Controls */
.skeleton-controls {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.skeleton-control {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.skeleton-control-label {
    height: 0.75rem;
    width: 50%;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
}

.skeleton-control-input {
    height: 2.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

/* Skeleton Legend */
.skeleton-legend {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    justify-content: center;
}

.skeleton-legend-bar {
    width: 200px;
    height: 12px;
    background: var(--bg-secondary);
    border-radius: 6px;
}

.skeleton-legend-label {
    height: 0.875rem;
    width: 40px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
}

/* Skeleton Extremes */
.skeleton-extremes {
    display: grid;
    gap: var(--spacing-xs);
}

.skeleton-extremes-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.5rem 0.7rem;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--spacing-sm);
}

.skeleton-extremes-name {
    height: 1rem;
    width: 70%;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
}

.skeleton-extremes-value {
    height: 1rem;
    width: 40px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
}

/* Respect reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    .skeleton,
    .skeleton-map::before,
    .skeleton-stat-icon,
    .skeleton-stat-label,
    .skeleton-stat-value {
        animation: none;
    }

    /* Use subtle opacity change instead */
    .skeleton {
        animation: skeleton-pulse-reduced 2s ease-in-out infinite;
    }

    @keyframes skeleton-pulse-reduced {
        0%, 100% {
            opacity: 1;
        }
        50% {
            opacity: 0.8;
        }
    }
}

/* Responsive Skeleton Adjustments */
@media (max-width: 768px) {
    .skeleton-map {
        height: 350px;
    }

    .skeleton-table-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-xs);
    }

    .skeleton-controls {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .skeleton-map {
        height: 300px;
    }

    .skeleton-legend-bar {
        width: 150px;
    }
}

/* ============================================================================
   Phase 2: Micro-interactions & Polish
   ============================================================================ */

/* Theme Transition - smooth switching between dark/light */
html {
    transition: background-color var(--transition-slow),
                color var(--transition-slow);
}

html.theme-transitioning *,
html.theme-transitioning *::before,
html.theme-transitioning *::after {
    transition: background-color var(--transition-medium),
                border-color var(--transition-medium),
                color var(--transition-medium),
                fill var(--transition-medium),
                stroke var(--transition-medium),
                box-shadow var(--transition-medium) !important;
}

/* Button Micro-interactions */
.btn {
    position: relative;
    overflow: hidden;
    transform: translateZ(0); /* GPU acceleration */
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at var(--ripple-x, 50%) var(--ripple-y, 50%),
                rgba(255, 255, 255, 0.3) 0%,
                transparent 60%);
    opacity: 0;
    transform: scale(0);
    transition: transform var(--transition-medium), opacity var(--transition-fast);
}

.btn:active::after {
    opacity: 1;
    transform: scale(2);
    transition: transform 0ms, opacity 0ms;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

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

/* Focus ring for keyboard navigation */
.btn:focus-visible,
select:focus-visible,
input:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Dropdown hover states */
select {
    transition: border-color var(--transition-fast),
                box-shadow var(--transition-fast),
                background-color var(--transition-fast);
}

select:hover {
    border-color: var(--border-hover);
    background-color: var(--bg-card-hover);
}

/* Card hover elevation */
.card {
    transition: transform var(--transition-medium),
                box-shadow var(--transition-medium);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

/* Stat card counter animation */
.stat-value {
    transition: transform var(--transition-fast);
}

.stat-card:hover .stat-value {
    transform: scale(1.05);
}

/* Interactive Legend */
.gradient-legend {
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.gradient-legend:hover {
    transform: scale(1.02);
}

.gradient-bar {
    transition: filter var(--transition-fast);
}

.gradient-legend:hover .gradient-bar {
    filter: brightness(1.1);
}

/* Tooltip improvements */
.tooltip {
    --tooltip-arrow-size: 6px;
    max-width: min(350px, 90vw);
    transform-origin: center bottom;
    animation: tooltip-enter var(--transition-fast) ease-out;
}

@keyframes tooltip-enter {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(4px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* Table row hover */
.data-table tbody tr {
    transition: background-color var(--transition-fast);
}

.data-table tbody tr:hover {
    background-color: var(--bg-card-hover);
}

/* Sort button animations */
.sort-btn .sort-icon {
    transition: transform var(--transition-fast);
}

.sort-btn:hover .sort-icon {
    transform: translateY(-1px);
}

/* Search input focus expand */
.search-box {
    transition: width var(--transition-medium),
                box-shadow var(--transition-fast),
                border-color var(--transition-fast);
}

.search-box:focus {
    width: 100%;
    max-width: 300px;
}

/* Layer checkbox animation */
.layer-checkbox {
    transition: transform var(--transition-fast);
}

.layer-checkbox:checked {
    animation: checkbox-pop var(--transition-bounce);
}

@keyframes checkbox-pop {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

/* Profile drawer slide animation */
.profile-drawer {
    transition: transform var(--transition-medium) cubic-bezier(0.4, 0, 0.2, 1),
                opacity var(--transition-medium);
}

.profile-drawer[aria-hidden="true"] {
    transform: translateX(100%);
    opacity: 0;
}

.profile-drawer[aria-hidden="false"] {
    transform: translateX(0);
    opacity: 1;
}

/* Zoom controls hover */
.zoom-controls button {
    transition: background-color var(--transition-fast),
                transform var(--transition-fast);
}

.zoom-controls button:hover {
    background-color: var(--bg-card-hover);
    transform: scale(1.1);
}

.zoom-controls button:active {
    transform: scale(0.95);
}

/* Theme toggle button animation */
.theme-toggle {
    transition: transform var(--transition-fast),
                background-color var(--transition-fast);
}

.theme-toggle:hover {
    transform: rotate(15deg) scale(1.1);
}

.theme-toggle:active {
    transform: rotate(-15deg) scale(0.95);
}

.theme-icon {
    display: inline-block;
    transition: transform var(--transition-medium);
}

[data-theme="light"] .theme-icon {
    transform: rotate(180deg);
}

/* Map county hover state */
.county {
    transition: opacity var(--transition-fast),
                stroke-width var(--transition-fast);
}

.county:hover {
    opacity: 0.85;
    stroke-width: 1.5px;
    stroke: var(--text-primary);
}

/* Loading state pulse */
.loading {
    animation: loading-pulse 1.5s ease-in-out infinite;
}

@keyframes loading-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Reduced motion - disable all animations */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html.theme-transitioning *,
    html.theme-transitioning *::before,
    html.theme-transitioning *::after {
        transition-duration: 0.01ms !important;
    }

    .btn:hover,
    .card:hover,
    .theme-toggle:hover {
        transform: none;
    }

    .tooltip {
        animation: none;
    }
}

/* ============================================================================
   Layer Picker Component (Comprehensive Layer Controls)
   ============================================================================ */

/* Layer Picker Container */
.layer-picker {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border);
}

.layer-picker-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.layer-picker-icon {
    font-size: 1.25rem;
}

/* Layer Section */
.layer-section {
    margin-bottom: var(--spacing-lg);
}

.layer-section-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-md);
}

/* Base Layer Options (Radio Buttons) */
.base-layer-options {
    display: grid;
    gap: var(--spacing-2);
}

.base-layer-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    /* Touch target minimum 44px */
    min-height: 44px;
}

.base-layer-option:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
}

.base-layer-option:has(input:checked) {
    background: rgba(74, 158, 255, 0.1);
    border-color: var(--accent);
}

.base-layer-option:has(input:focus-visible) {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.base-layer-option input[type="radio"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--accent);
    flex-shrink: 0;
}

.base-layer-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex: 1;
}

.base-layer-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

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

/* Overlay Layers Grid */
.overlay-layers {
    display: grid;
    gap: var(--spacing-3);
}

/* Layer Card */
.layer-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: all var(--transition-medium);
}

.layer-card:hover {
    border-color: var(--border-hover);
}

.layer-card:has(.layer-checkbox:checked) {
    border-color: var(--accent);
    background: rgba(74, 158, 255, 0.05);
}

.layer-card-disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.layer-card-disabled:hover {
    border-color: var(--border);
}

/* Layer Card Header */
.layer-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
    padding: var(--spacing-3);
    /* Touch target minimum 44px */
    min-height: 44px;
}

.layer-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    flex: 1;
    /* Increase touch target area */
    padding: var(--spacing-1);
    margin: calc(-1 * var(--spacing-1));
    border-radius: var(--radius-sm);
}

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

.layer-toggle:has(input:focus-visible) {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.layer-checkbox {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--accent);
    flex-shrink: 0;
}

.layer-checkbox:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

.layer-name {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    flex: 1;
}

.layer-icon {
    font-size: 1.125rem;
    flex-shrink: 0;
}

.layer-status-badge {
    display: inline-flex;
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-muted);
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.layer-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 28px;
    height: 24px;
    padding: 0 var(--spacing-2);
    border-radius: var(--radius-full);
    background: var(--bg-card);
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    flex-shrink: 0;
}

.layer-card:has(.layer-checkbox:checked) .layer-badge {
    background: var(--accent);
    color: white;
}

/* Layer Card Body (Opacity Controls) */
.layer-card-body {
    padding: 0 var(--spacing-3) var(--spacing-3);
    border-top: 1px solid var(--border);
    margin-top: var(--spacing-3);
    animation: layer-body-expand var(--transition-medium) ease-out;
}

@keyframes layer-body-expand {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.layer-control {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.layer-control-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.opacity-value {
    color: var(--accent);
    font-weight: 600;
}

/* Opacity Slider */
.opacity-slider {
    width: 100%;
    height: 6px;
    background: var(--bg-card);
    border-radius: 3px;
    outline: none;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
}

.opacity-slider::-webkit-slider-thumb {
    appearance: none;
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.opacity-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    border: none;
    transition: all var(--transition-fast);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.opacity-slider:hover::-webkit-slider-thumb {
    background: var(--accent-hover);
    transform: scale(1.1);
}

.opacity-slider:hover::-moz-range-thumb {
    background: var(--accent-hover);
    transform: scale(1.1);
}

.opacity-slider:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.opacity-slider:focus-visible::-webkit-slider-thumb {
    box-shadow: 0 0 0 4px rgba(74, 158, 255, 0.2);
}

.opacity-slider:focus-visible::-moz-range-thumb {
    box-shadow: 0 0 0 4px rgba(74, 158, 255, 0.2);
}

/* Layer Picker Note */
.layer-picker-note {
    margin-top: var(--spacing-md);
    padding: var(--spacing-3);
    background: rgba(74, 158, 255, 0.05);
    border: 1px solid rgba(74, 158, 255, 0.2);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-2);
}

.note-icon {
    font-size: 1rem;
    flex-shrink: 0;
}

/* Loading Indicator for Layers */
.layer-loading {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.layer-loading::after {
    content: '⏳';
    animation: layer-loading-spin 1s linear infinite;
}

@keyframes layer-loading-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Responsive Layout */
@media (max-width: 768px) {
    .layer-picker {
        /* On mobile, layer picker is in bottom sheet */
        padding: 0;
        border-top: none;
        margin-top: 0;
    }

    .base-layer-options {
        gap: var(--spacing-2);
    }

    .base-layer-option {
        padding: var(--spacing-2);
    }

    .layer-card-header {
        padding: var(--spacing-2);
    }

    .layer-card-body {
        padding: 0 var(--spacing-2) var(--spacing-2);
    }
}

@media (max-width: 480px) {
    .layer-picker-title {
        font-size: 0.9rem;
    }

    .layer-section-title {
        font-size: 0.8125rem;
    }

    .base-layer-text,
    .layer-name {
        font-size: 0.8125rem;
    }

    .base-layer-icon,
    .layer-icon {
        font-size: 1rem;
    }
}

/* Tablet and Above: Floating Panel Option (Optional Enhancement) */
@media (min-width: 1024px) {
    /* Optional: Make layer picker a floating sidebar on desktop */
    .layer-picker-floating {
        position: fixed;
        top: 80px;
        right: var(--spacing-lg);
        width: 320px;
        max-height: calc(100vh - 100px);
        overflow-y: auto;
        background: var(--glass-bg);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border: 1px solid var(--glass-border);
        border-radius: var(--radius-md);
        padding: var(--spacing-lg);
        box-shadow: var(--glass-shadow);
        z-index: 50;
    }

    .layer-picker-floating .layer-picker-title {
        margin-bottom: var(--spacing-lg);
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .base-layer-option:has(input:checked) {
        border-width: 2px;
    }

    .layer-card:has(.layer-checkbox:checked) {
        border-width: 2px;
    }

    .opacity-slider::-webkit-slider-thumb,
    .opacity-slider::-moz-range-thumb {
        border: 2px solid var(--text-primary);
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    .layer-card-body {
        animation: none;
    }

    .opacity-slider:hover::-webkit-slider-thumb,
    .opacity-slider:hover::-moz-range-thumb {
        transform: none;
    }

    @keyframes layer-loading-spin {
        from { transform: none; }
        to { transform: none; }
    }
}

/* ============================================================================
   MAP HERO LAYOUT - Progressive Disclosure Architecture
   ============================================================================ */

/* Map fills viewport as hero element */
.map-hero {
    position: fixed;
    inset: 0;
    z-index: var(--z-map, 1);
    overflow: hidden;
    padding: 0;
}

.map-viewport {
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
}

[data-theme="light"] .map-viewport {
    background: #dde3ea;
}

[data-theme="light"] .county {
    stroke: #64748b;
    stroke-width: 0.75;
}

.map-viewport svg {
    display: block;
    width: 100%;
    height: 100%;
}

/* Override old container styles when using map-hero */
.map-hero .container {
    max-width: none;
    padding: 0;
    margin: 0;
}

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

/* Modal open state - prevent body scroll */
body.modal-open {
    overflow: hidden;
}

/* ============================================================================
   FILTER & LAYER ACCORDION STYLES (Drawer Context)
   ============================================================================ */

.filter-group {
    margin-bottom: var(--spacing-4);
}

.filter-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-2);
}

.filter-select {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-size: 0.9rem;
}

/* Layer subsection in drawer */
.layer-subsection {
    margin-bottom: var(--spacing-4);
}

.layer-subsection-title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-2);
}

/* Overlay layer list in drawer */
.overlay-layer-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.overlay-layer-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-2) var(--spacing-3);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    min-height: 40px;
}

.overlay-layer-option:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
}

.overlay-layer-option:has(input:checked) {
    background: rgba(74, 158, 255, 0.1);
    border-color: var(--accent);
}

.overlay-layer-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
}

/* ============================================================================
   BUTTON VARIANTS
   ============================================================================ */

.btn-block {
    display: flex;
    width: 100%;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
    min-height: 36px;
}

.btn-ghost {
    background: transparent;
    border-color: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
    transform: none;
    box-shadow: none;
}

/* ============================================================================
   BOTTOM SHEET TAB STYLES
   ============================================================================ */

.bottom-sheet-tabs {
    display: flex;
    gap: var(--spacing-1);
    padding: var(--spacing-2) var(--spacing-4);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

.tab-btn {
    flex: 1;
    padding: var(--spacing-2) var(--spacing-3);
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    min-height: 40px;
}

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

.tab-btn.active {
    background: var(--accent);
    color: white;
}

.tab-btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.tab-panel {
    padding: var(--spacing-4);
}

.tab-panel[hidden] {
    display: none;
}

/* Mobile bottom sheet specific */
.base-layer-options-mobile {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-2);
}

.base-layer-options-mobile .base-layer-option {
    padding: var(--spacing-2);
    font-size: 0.8125rem;
}

.overlay-toggles-mobile {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.toggle-chip {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 0.8125rem;
    transition: all var(--transition-fast);
}

.toggle-chip:hover {
    border-color: var(--border-hover);
}

.toggle-chip:has(input:checked) {
    background: rgba(74, 158, 255, 0.1);
    border-color: var(--accent);
    color: var(--accent);
}

.toggle-chip input {
    width: 16px;
    height: 16px;
    accent-color: var(--accent);
}

/* Data summary in bottom sheet */
.data-summary {
    margin-bottom: var(--spacing-4);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-2) 0;
    border-bottom: 1px solid var(--border);
}

.summary-row:last-child {
    border-bottom: none;
}

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

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

.data-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

/* ============================================================================
   PROFILE DRAWER (County Details - Right Slide Panel)
   ============================================================================ */

/* Profile drawer positioned at right of map */
.map-hero .profile-drawer {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(360px, 90vw);
    z-index: var(--z-profile, 160);
    overflow-y: auto;
    padding: var(--spacing-4);
    transform: translateX(100%);
    transition: transform var(--transition-medium) var(--ease-out-expo, cubic-bezier(0.16, 1, 0.3, 1));
}

.map-hero .profile-drawer.open,
.map-hero .profile-drawer[aria-hidden="false"] {
    transform: translateX(0);
}

.profile-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.profile-close:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: var(--border-hover);
}

.profile-close svg {
    width: 18px;
    height: 18px;
}

/* ============================================================================
   RESPONSIVE ADJUSTMENTS FOR MAP HERO
   ============================================================================ */

@media (max-width: 768px) {
    /* Profile drawer slides from bottom on mobile */
    .map-hero .profile-drawer {
        top: auto;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100%;
        max-height: 60vh;
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        transform: translateY(100%);
    }

    .map-hero .profile-drawer.open,
    .map-hero .profile-drawer[aria-hidden="false"] {
        transform: translateY(0);
    }
}

/* ============================================================================
   Z-INDEX REFERENCE (from glassmorphism.css)
   ============================================================================ */

:root {
    --z-map: 1;
    --z-legend: 10;
    --z-controls: 20;
    --z-stats-bar: 30;
    --z-drawer-overlay: 90;
    --z-drawer: 100;
    --z-header: 110;
    --z-profile: 160;
    --z-modal-overlay: 190;
    --z-modal: 200;
    --z-tooltip: 300;
    --z-toast: 400;
}

/* ============================================================================
   REDUCED MOTION SUPPORT
   ============================================================================ */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Alternative class-based reduced motion (set by JS) */
html.reduce-motion *,
html.reduce-motion *::before,
html.reduce-motion *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
}

/* ============================================================================
   ENHANCED FOCUS STYLES
   ============================================================================ */

/* Global focus-visible for keyboard users */
:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Focus ring on interactive elements */
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(74, 158, 255, 0.2);
}

/* Remove default outline for mouse users */
:focus:not(:focus-visible) {
    outline: none;
}

/* High contrast focus for accordion headers */
.accordion-header:focus-visible {
    outline-offset: -2px;
    background: var(--glass-bg-light);
}

/* Tab focus */
.tab-btn:focus-visible {
    outline-offset: -2px;
    z-index: 1;
}

/* FAB focus */
.fab:focus-visible {
    box-shadow: 0 0 0 4px rgba(74, 158, 255, 0.4), var(--shadow-lg);
}

/* ============================================================================
   PRINT STYLES
   ============================================================================ */

@media print {
    /* Hide UI elements for printing */
    .controls-panel,
    .panel-overlay,
    .site-header,
    .site-footer,
    .stats-bar,
    .zoom-controls,
    .theme-toggle {
        display: none !important;
    }

    /* Make map fill page */
    .map-hero {
        position: static;
        height: auto;
    }

    /* Show legend */
    .legend-overlay {
        position: static;
        background: white;
        border: 1px solid #ccc;
    }
}