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

:root {
    --color-bg: #f4f5f7;
    --color-header: #1a1a2e;
    --color-header-accent: #16213e;
    --color-text: #2d3436;
    --color-text-light: #636e72;
    --color-white: #ffffff;
    --color-border: #dfe6e9;
    --color-primary: #0984e3;
    --color-primary-light: #74b9ff;

    --risk-green: #1a9641;
    --risk-lime: #a6d96a;
    --risk-yellow: #fee08b;
    --risk-orange: #f46d43;
    --risk-red: #d73027;

    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: "SF Mono", "Fira Code", "Consolas", monospace;

    --header-height: 64px;
    --filter-height: 48px;
    --sidebar-width: 400px;
    --radius: 6px;
    --shadow: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-lg: 0 4px 12px rgba(0,0,0,0.15);
}

html, body {
    height: 100%;
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-text);
    background: var(--color-bg);
    overflow: hidden;
}

/* ===== Header ===== */
#app-header {
    height: var(--header-height);
    background: var(--color-header);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 1000;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 14px;
}

.header-logo {
    height: 40px;
    width: 40px;
    border-radius: 50%;
}

.header-title h1 {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.3px;
    line-height: 1.2;
}

.header-subtitle {
    font-size: 12px;
    color: #b2bec3;
    letter-spacing: 0.3px;
}

.header-right {
    display: flex;
    align-items: center;
}

.header-stats {
    display: flex;
    gap: 24px;
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 22px;
    font-weight: 700;
    font-family: var(--font-mono);
    line-height: 1.1;
}

.stat-label {
    font-size: 10px;
    color: #b2bec3;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-danger { color: var(--risk-red); }
.stat-warning { color: var(--risk-orange); }

/* ===== Main Layout ===== */
#app-main {
    display: grid;
    grid-template-columns: 1fr var(--sidebar-width);
    height: calc(100vh - var(--header-height));
    overflow: hidden;
}

#map-panel {
    display: flex;
    flex-direction: column;
    min-width: 0;
    overflow: hidden;
}

#map-container {
    flex: 1;
    position: relative;
}

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

/* ===== Legend ===== */
#legend {
    position: absolute;
    bottom: 24px;
    left: 12px;
    background: rgba(255,255,255,0.95);
    padding: 12px 14px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    z-index: 800;
    font-size: 12px;
}

#legend h4 {
    margin-bottom: 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 3px 0;
    color: var(--color-text-light);
}

.legend-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* ===== Filter Bar ===== */
#filter-bar {
    height: var(--filter-height);
    background: var(--color-white);
    border-top: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 0 16px;
    font-size: 12px;
    overflow-x: auto;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.filter-group label {
    font-weight: 600;
    color: var(--color-text-light);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.filter-group select,
.filter-group input[type="range"] {
    font-size: 12px;
    padding: 3px 6px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    background: var(--color-bg);
    color: var(--color-text);
}

.filter-group input[type="range"] {
    width: 80px;
    padding: 0;
    border: none;
    background: none;
}

#filter-risk-min-value {
    font-family: var(--font-mono);
    font-size: 12px;
    min-width: 30px;
}

.btn-secondary {
    padding: 4px 12px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    background: var(--color-white);
    color: var(--color-text-light);
    font-size: 11px;
    cursor: pointer;
    transition: all 0.15s;
}

.btn-secondary:hover {
    background: var(--color-bg);
    color: var(--color-text);
    border-color: #b2bec3;
}

#filter-count {
    font-size: 12px;
    color: var(--color-text-light);
    margin-left: auto;
    white-space: nowrap;
}

/* ===== Sidebar ===== */
#sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    flex-shrink: 0;
    background: var(--color-white);
    border-left: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

#sidebar-tabs {
    display: flex;
    border-bottom: 2px solid var(--color-border);
    flex-shrink: 0;
}

.tab-btn {
    flex: 1;
    padding: 10px 8px;
    border: none;
    background: none;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-light);
    cursor: pointer;
    transition: all 0.15s;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
}

.tab-btn:hover { color: var(--color-text); }
.tab-btn.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.tab-content {
    display: none;
    flex: 1;
    overflow-y: auto;
}
.tab-content.active { display: block; }

/* ===== Top 50 List ===== */
#top50-list {
    padding: 0;
}

.top50-row {
    display: flex;
    align-items: center;
    padding: 8px 14px;
    border-bottom: 1px solid var(--color-border);
    cursor: pointer;
    transition: background 0.1s;
    gap: 10px;
}

.top50-row:hover { background: #f8f9fa; }
.top50-row.active { background: #e8f4fd; }

.top50-rank {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    color: var(--color-white);
    flex-shrink: 0;
}

.top50-info {
    flex: 1;
    min-width: 0;
}

.top50-name {
    font-weight: 600;
    font-size: 13px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.top50-meta {
    font-size: 11px;
    color: var(--color-text-light);
}

.top50-score {
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 700;
    flex-shrink: 0;
}

/* ===== Detail Panel ===== */
#detail-empty {
    padding: 40px 20px;
    text-align: center;
    color: var(--color-text-light);
}

#detail-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    border-bottom: 1px solid var(--color-border);
}

#detail-header h3 {
    font-size: 16px;
    font-weight: 700;
}

#detail-risk-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--color-white);
}

.fact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    padding: 0 16px;
}

.fact {
    padding: 8px 0;
    border-bottom: 1px solid var(--color-border);
}

.fact-label {
    display: block;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    color: var(--color-text-light);
    margin-bottom: 1px;
}

.fact-value {
    font-weight: 600;
    font-size: 13px;
}

/* ===== Charts ===== */
.chart-container {
    padding: 14px 16px;
    border-top: 1px solid var(--color-border);
}

.chart-container h4 {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-light);
    margin-bottom: 8px;
}

.chart-container svg {
    width: 100%;
    overflow: visible;
}

.chart-line {
    fill: none;
    stroke-width: 2;
}

.chart-area {
    opacity: 0.2;
}

.chart-dot {
    stroke: var(--color-white);
    stroke-width: 1.5;
}

.chart-axis text {
    font-size: 10px;
    fill: var(--color-text-light);
}

.chart-axis line,
.chart-axis path {
    stroke: var(--color-border);
}

.chart-grid line {
    stroke: var(--color-border);
    stroke-dasharray: 2,3;
}

.chart-tooltip {
    font-size: 11px;
    font-weight: 600;
}

.insar-warning-zone {
    fill: var(--risk-red);
    opacity: 0.08;
}

.insar-zero-line {
    stroke: var(--color-text-light);
    stroke-dasharray: 4,3;
    stroke-width: 1;
    opacity: 0.5;
}

/* ===== Loading Overlay ===== */
#loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(255,255,255,0.92);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.3s;
}

#loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 12px;
}

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

#loading-overlay p {
    font-size: 14px;
    color: var(--color-text-light);
}

/* ===== Leaflet Cluster Overrides ===== */
.marker-cluster-small { background: rgba(26,150,65,0.4); }
.marker-cluster-small div { background: rgba(26,150,65,0.7); }
.marker-cluster-medium { background: rgba(254,224,139,0.5); }
.marker-cluster-medium div { background: rgba(244,109,67,0.7); }
.marker-cluster-large { background: rgba(215,48,39,0.4); }
.marker-cluster-large div { background: rgba(215,48,39,0.7); }

.marker-cluster div {
    color: var(--color-white);
    font-weight: 700;
    font-size: 12px;
}

/* ===== Scrollbar ===== */
.tab-content::-webkit-scrollbar { width: 6px; }
.tab-content::-webkit-scrollbar-track { background: transparent; }
.tab-content::-webkit-scrollbar-thumb { background: #ccc; border-radius: 3px; }
.tab-content::-webkit-scrollbar-thumb:hover { background: #aaa; }

/* ===== Responsive ===== */
@media (max-width: 900px) {
    :root { --sidebar-width: 280px; }
    .header-stats { gap: 14px; }
    .stat-value { font-size: 18px; }
}

@media (max-width: 640px) {
    #app-main { grid-template-columns: 1fr; grid-template-rows: 1fr 40vh; }
    #sidebar { width: 100%; min-width: unset; border-left: none; border-top: 1px solid var(--color-border); }
    .header-stats { display: none; }
}