/* ===== CSS Variables ===== */
:root {
    /* Brand Colors - Black & Red Professional */
    --color-primary: #dc2626;
    --color-primary-dark: #b91c1c;
    --color-text: #111827;
    --color-text-light: #4b5563;
    --color-text-muted: #9ca3af;
    --color-background: #f9fafb;
    --color-surface: #ffffff;
    --color-border: #e5e7eb;
    --color-dark: #1f2937;

    /* Wage Level Colors */
    --level-below: #dc2626;
    --level-1: #f97316;
    --level-2: #facc15;
    --level-3: #22c55e;
    --level-4: #15803d;
    --no-data: #d1d5db;

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

    /* Font */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
}

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

html {
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    color: var(--color-text);
    background: var(--color-background);
    line-height: 1.5;
    min-height: 100vh;
}

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

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

/* ===== Header ===== */
.header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--color-dark);
    color: white;
    border-radius: var(--radius-md);
}

.title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.title .year {
    color: var(--color-primary);
    font-weight: 800;
}

.subtitle {
    font-size: 0.875rem;
    opacity: 0.8;
}

@media (min-width: 768px) {
    .title {
        font-size: 2rem;
    }
}

/* ===== Instructions ===== */
.instructions {
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-left: 4px solid var(--color-primary);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.instructions p {
    font-size: 0.875rem;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.instructions p:last-child {
    margin-bottom: 0;
}

/* ===== Filters ===== */
.filters {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    background: var(--color-surface);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

@media (min-width: 480px) {
    .filters {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .filters {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .filters {
        grid-template-columns: repeat(5, 1fr);
    }
}

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

.filter-group label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.filter-input,
.filter-select {
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: inherit;
    background: var(--color-surface);
    color: var(--color-text);
    transition: border-color 0.15s;
    width: 100%;
    min-height: 44px;
}

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

.filter-input::placeholder {
    color: var(--color-text-muted);
}

/* ===== Input with Clear Button ===== */
.input-with-clear {
    position: relative;
    display: flex;
    align-items: center;
}

.input-with-clear .filter-input,
.input-with-clear .filter-select {
    flex: 1;
    padding-right: 32px;
}

.input-clear-btn {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    border: none;
    background: var(--color-text-muted);
    color: white;
    border-radius: 50%;
    cursor: pointer;
    font-size: 10px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s;
    opacity: 0.7;
}

.input-clear-btn:hover {
    background: var(--color-primary);
    opacity: 1;
}

/* ===== Main Content ===== */
.main-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

@media (min-width: 992px) {
    .main-content {
        flex-direction: row;
    }
}

/* ===== Map Container ===== */
.map-container {
    position: relative;
    flex: 1;
    background: #f1f5f9;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-border);
    min-height: 300px;
}

@media (min-width: 768px) {
    .map-container {
        min-height: 450px;
    }
}

@media (min-width: 1024px) {
    .map-container {
        min-height: 550px;
    }
}

#map {
    width: 100%;
    height: 100%;
    min-height: inherit;
}

#map svg {
    width: 100%;
    height: 100%;
}

.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 300px;
    font-size: 1rem;
    color: var(--color-text-light);
}

/* ===== Zoom Controls ===== */
.zoom-controls {
    position: absolute;
    bottom: 16px;
    right: 16px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    z-index: 50;
    transition: left 0.3s ease, right 0.3s ease;
}

.zoom-controls.shifted {
    right: auto;
    left: 16px;
}

.zoom-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--color-dark);
    color: white;
    font-size: 1.25rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s, transform 0.1s;
    box-shadow: var(--shadow-md);
}

.zoom-btn:hover {
    background: var(--color-primary);
    transform: scale(1.05);
}

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

.zoom-reset {
    font-size: 1rem;
    margin-top: 4px;
}

/* ===== County Styling ===== */
.county {
    stroke: rgba(255, 255, 255, 0.5);
    stroke-width: 0.3px;
    cursor: pointer;
    transition: opacity 0.15s;
}

.county:hover {
    opacity: 0.8;
    stroke: #fff;
    stroke-width: 1px;
}

.county.highlighted {
    stroke: #000000 !important;
    stroke-width: 0.5px !important;
    stroke-linejoin: round !important;
    stroke-linecap: round !important;
}

.state-border {
    fill: none;
    stroke: rgba(255, 255, 255, 0.7);
    stroke-width: 1px;
    pointer-events: none;
}

/* ===== Legend ===== */
.legend {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    background: var(--color-surface);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

@media (min-width: 992px) {
    .legend {
        flex-direction: column;
        width: 130px;
        flex-shrink: 0;
    }
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex: 1 1 45%;
}

@media (min-width: 992px) {
    .legend-item {
        flex: none;
    }
}

.legend-color {
    width: 20px;
    height: 14px;
    border-radius: 2px;
    flex-shrink: 0;
}

.legend-color.level-below {
    background: var(--level-below);
}

.legend-color.level-1 {
    background: var(--level-1);
}

.legend-color.level-2 {
    background: var(--level-2);
}

.legend-color.level-3 {
    background: var(--level-3);
}

.legend-color.level-4 {
    background: var(--level-4);
}

.legend-color.no-data {
    background: var(--no-data);
}

.legend-label {
    font-size: 0.75rem;
    color: var(--color-text);
}

/* ===== Tooltip ===== */
.tooltip {
    position: absolute;
    background: var(--color-dark);
    color: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.15s;
    z-index: 100;
    max-width: 280px;
    box-shadow: var(--shadow-md);
}

.tooltip.visible {
    opacity: 1;
}

.tooltip.locked {
    pointer-events: auto;
}

.tooltip-close {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 24px;
    height: 24px;
    border: none;
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border-radius: 50%;
    cursor: pointer;
    font-size: 14px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s;
}

.tooltip-close:hover {
    background: var(--color-primary);
}

.tooltip-title {
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    padding-right: 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.tooltip-content {
    line-height: 1.6;
}

.tooltip-content strong {
    color: #fca5a5;
}

.tooltip-level {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-weight: 500;
    text-align: center;
}

/* ===== County Labels ===== */
.county-label {
    font-family: var(--font-family);
    pointer-events: none;
    user-select: none;
}

/* ===== Footer ===== */
.footer {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.footer p {
    font-size: 0.75rem;
    color: var(--color-text-light);
}

.attribution {
    display: inline-block;
    margin-top: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-dark);
    color: white;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: background 0.15s;
}

.attribution:hover {
    background: var(--color-primary-dark);
}

/* ===== Search ===== */
.search-container {
    position: relative;
}

.search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    max-height: 200px;
    overflow-y: auto;
    z-index: 200;
    display: none;
    margin-top: 2px;
}

.search-result-item {
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.875rem;
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-item:hover {
    background: #fef2f2;
}

.search-result-item strong {
    color: var(--color-primary);
}

.search-result-item small {
    color: var(--color-text-muted);
    font-size: 0.75rem;
}

/* ===== Mobile ===== */
@media (max-width: 480px) {
    .container {
        padding: var(--spacing-sm);
    }

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

    .title {
        font-size: 1.25rem;
    }

    .filters {
        padding: var(--spacing-sm);
    }

    .tooltip {
        max-width: calc(100vw - 24px);
        font-size: 0.8rem;
    }
}