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

:root {
    --bg-primary: #0d0d18;
    --bg-secondary: #141428;
    --bg-tertiary: #1a1a36;
    --bg-card: #1c2040;
    --border: #262650;
    --border-light: #3a3a6a;
    --text-primary: #f2f2f8;
    --text-secondary: #9a9ab8;
    --text-muted: #5c5c7a;
    --accent: #5cc8f7;
    --accent-dim: #1a4070;
    --danger: #ff6b6b;
    --success: #4ecdc4;
    --warning: #ffa94d;
    --panel-width: 420px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
    height: 100vh;
    overflow: hidden;
    background: var(--bg-primary);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

#app {
    display: flex;
    height: 100vh;
}

/* ====== PANEL ====== */
#panel {
    width: var(--panel-width);
    min-width: var(--panel-width);
    height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--bg-secondary);
    z-index: 1000;
    border-right: 1px solid var(--border);
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.4);
}

#panel-header {
    padding: 20px 24px 16px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
    background: linear-gradient(180deg, rgba(92, 200, 247, 0.04) 0%, transparent 100%);
}

#panel-header h1 {
    font-size: 1.25em;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.4px;
}

#panel-header .subtitle {
    color: var(--text-muted);
    font-size: 0.78em;
    margin-top: 3px;
    letter-spacing: 0.2px;
}

/* ====== TABS ====== */
#tabs {
    display: flex;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
    background: var(--bg-primary);
    padding: 0 4px;
}

.tab {
    flex: 1;
    padding: 11px 8px;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 0.72em;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.2s ease;
    position: relative;
}

.tab:hover {
    color: var(--text-secondary);
    background: rgba(92, 200, 247, 0.04);
}

.tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
    background: rgba(92, 200, 247, 0.06);
}

/* ====== TAB CONTENT ====== */
.tab-content {
    display: none;
    flex: 1;
    overflow-y: auto;
    padding: 18px 22px;
}

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

/* ====== CONTROLS ====== */
.controls {
    margin-bottom: 18px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.controls h3 {
    font-size: 0.68em;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
    font-weight: 600;
}

.controls label {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 5px 0;
    cursor: pointer;
    font-size: 0.84em;
    color: var(--text-primary);
    transition: color 0.15s;
}

.controls label:hover {
    color: var(--accent);
}

.controls label input[type="checkbox"] {
    accent-color: var(--accent);
    width: 14px;
    height: 14px;
}

.controls select {
    width: 100%;
    padding: 9px 12px;
    border-radius: 8px;
    border: 1px solid var(--border-light);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 0.84em;
    margin-top: 4px;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23888' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.controls select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(92, 200, 247, 0.12);
}

.controls select:hover {
    border-color: var(--border-light);
    background-color: rgba(26, 26, 54, 0.8);
}

.btn {
    display: inline-block;
    margin-top: 8px;
    padding: 8px 16px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.8em;
    font-weight: 500;
    transition: all 0.2s ease;
}

.btn:hover {
    background: var(--accent-dim);
    border-color: var(--accent);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(92, 200, 247, 0.15);
}

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

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

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

/* Extent toggle button group */
.btn-group {
    display: flex;
    gap: 0;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 1px 4px rgba(0,0,0,0.3);
}
.btn-group .btn-extent {
    flex: 1;
    padding: 8px 12px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    font-size: 0.76em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    letter-spacing: 0.2px;
}
.btn-group .btn-extent:first-child {
    border-radius: 8px 0 0 8px;
}
.btn-group .btn-extent:last-child {
    border-radius: 0 8px 8px 0;
    border-left: none;
}
.btn-group .btn-extent:hover {
    background: var(--accent-dim);
    color: var(--text-primary);
}
.btn-group .btn-extent.active {
    background: var(--accent);
    color: var(--bg-primary);
    border-color: var(--accent);
    font-weight: 700;
    box-shadow: 0 0 12px rgba(92, 200, 247, 0.25);
}

.hint {
    color: var(--text-muted);
    font-size: 0.75em;
    font-style: italic;
    margin-top: 4px;
}

/* Range slider */
.range-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.range-row input[type="range"] {
    flex: 1;
    accent-color: var(--accent);
    height: 4px;
}

.range-row span {
    font-size: 0.82em;
    color: var(--accent);
    font-weight: 600;
    min-width: 48px;
    text-align: right;
}

/* Compare selectors */
.compare-selectors {
    display: flex;
    align-items: center;
    gap: 8px;
}

.compare-selectors select {
    flex: 1;
}

.vs {
    color: var(--text-muted);
    font-size: 0.8em;
    font-weight: 700;
}

/* ====== INFO PANEL ====== */
#info-panel {
    margin-bottom: 18px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

#tract-info {
    font-size: 0.82em;
    line-height: 1.8;
    background: var(--bg-card);
    border-radius: 8px;
    padding: 12px 14px;
    border: 1px solid var(--border);
}

#tract-info .label {
    color: var(--text-secondary);
}

#tract-info .value {
    color: #fff;
    font-weight: 600;
}

#tract-info .change-pos {
    color: var(--success);
}

#tract-info .change-neg {
    color: var(--danger);
}

/* ====== LEGEND ====== */
#legend {
    margin-bottom: 18px;
    background: var(--bg-card);
    border-radius: 8px;
    padding: 12px 14px;
    border: 1px solid var(--border);
}

#legend h3 {
    font-size: 0.68em;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
    font-weight: 600;
}

#legend-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.legend-item {
    display: flex;
    align-items: center;
    font-size: 0.78em;
    gap: 8px;
}

.legend-color {
    width: 18px;
    height: 12px;
    border-radius: 2px;
    flex-shrink: 0;
}

.legend-gradient {
    width: 100%;
    height: 12px;
    border-radius: 3px;
    margin: 4px 0;
}

.legend-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.72em;
    color: var(--text-muted);
}

/* ====== ANALYSIS SECTIONS ====== */
.analysis-section {
    margin-bottom: 20px;
    padding: 16px;
    background: var(--bg-card);
    border-radius: 10px;
    border: 1px solid var(--border);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.analysis-section h3 {
    font-size: 0.74em;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
    font-weight: 600;
}

.chart-container {
    position: relative;
    height: 200px;
    margin: 8px 0;
}

.chart-container.chart-tall {
    height: 280px;
}

/* Displacement / Scorecard */
.score-card {
    display: flex;
    align-items: center;
    padding: 10px 12px;
    margin-bottom: 8px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    border-left: 4px solid var(--border);
    gap: 12px;
}

.score-card .score-value {
    font-size: 1.5em;
    font-weight: 800;
    min-width: 50px;
    text-align: center;
}

.score-card .score-info {
    flex: 1;
}

.score-card .score-name {
    font-size: 0.85em;
    font-weight: 600;
    color: var(--text-primary);
}

.score-card .score-detail {
    font-size: 0.72em;
    color: var(--text-muted);
    margin-top: 2px;
}

.score-high { border-left-color: var(--danger); }
.score-high .score-value { color: var(--danger); }
.score-moderate { border-left-color: var(--warning); }
.score-moderate .score-value { color: var(--warning); }
.score-low { border-left-color: var(--success); }
.score-low .score-value { color: var(--success); }

/* Metric rows in analysis */
.metric-row {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    font-size: 0.82em;
}

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

.metric-label {
    color: var(--text-secondary);
}

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

.metric-value.positive { color: var(--success); }
.metric-value.negative { color: var(--danger); }

/* Compare cards */
#compare-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 16px;
}

.compare-card {
    padding: 12px;
    border-radius: 6px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
}

.compare-card h4 {
    font-size: 0.8em;
    margin-bottom: 8px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border);
}

/* ====== MAP ====== */
#map {
    flex: 1;
    height: 100vh;
    background: #0a0a12;
}

/* TAD boundary styles */
.tad-label {
    background: none;
    border: none;
    color: #fff;
    font-weight: 700;
    font-size: 10.5px;
    text-shadow: 0 1px 4px rgba(0,0,0,1), 0 0 8px rgba(0,0,0,0.8);
    white-space: nowrap;
    pointer-events: none;
    letter-spacing: 0.3px;
}

/* TAD hover tooltip */
.tad-tooltip {
    background: rgba(20, 20, 40, 0.96);
    border: 1px solid rgba(92, 200, 247, 0.3);
    border-radius: 8px;
    color: #fff;
    font-size: 12px;
    padding: 8px 12px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.6);
    backdrop-filter: blur(8px);
}
.tad-tooltip em {
    color: var(--text-muted);
    font-size: 10px;
}
.leaflet-tooltip-top:before,
.leaflet-tooltip-bottom:before,
.leaflet-tooltip-left:before,
.leaflet-tooltip-right:before {
    border-top-color: rgba(20, 20, 40, 0.96) !important;
}

/* Interactive map cursors */
.leaflet-interactive {
    cursor: pointer;
}

/* Leaflet attribution polish */
.leaflet-control-attribution {
    background: rgba(10, 10, 18, 0.7) !important;
    color: var(--text-muted) !important;
    font-size: 10px !important;
    border-radius: 4px 0 0 0 !important;
}
.leaflet-control-attribution a {
    color: var(--text-secondary) !important;
}

/* Leaflet zoom controls */
.leaflet-control-zoom a {
    background: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
    border-color: var(--border) !important;
    width: 32px !important;
    height: 32px !important;
    line-height: 32px !important;
    font-size: 16px !important;
    transition: background 0.15s;
}
.leaflet-control-zoom a:hover {
    background: var(--bg-tertiary) !important;
}

/* ====== FOOTER ====== */
#panel-footer {
    padding: 12px 22px;
    border-top: 1px solid var(--border);
    flex-shrink: 0;
    background: var(--bg-primary);
}

#panel-footer p {
    font-size: 0.66em;
    color: var(--text-muted);
    letter-spacing: 0.1px;
}

/* ====== SCROLLBAR ====== */
.tab-content::-webkit-scrollbar {
    width: 5px;
}

.tab-content::-webkit-scrollbar-track {
    background: transparent;
}

.tab-content::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

.tab-content::-webkit-scrollbar-thumb:hover {
    background: var(--border-light);
}

/* ====== RESPONSIVE ====== */
@media (max-width: 900px) {
    :root { --panel-width: 100vw; }
    #app { flex-direction: column; }
    #panel { width: 100%; min-width: 100%; height: 50vh; }
    #map { height: 50vh; }
}