:root {
    --bg-color: #0f172a;
    --surface-color: rgba(30, 41, 59, 0.85);
    --surface-solid: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --border-color: rgba(255, 255, 255, 0.1);
    
    --color-pip: #f59e0b;
    --color-pip-glow: rgba(245, 158, 11, 0.4);
    --color-efl: #6366f1;
    --color-efl-glow: rgba(99, 102, 241, 0.4);
    --color-se: #3b82f6;
    --color-se-glow: rgba(59, 130, 246, 0.4);
    --color-ntc: #10b981;
    --color-ntc-glow: rgba(16, 185, 129, 0.4);
    --color-ace: #ec4899;
    --color-ace-glow: rgba(236, 72, 153, 0.4);
    --color-accent: #6366f1;
    --color-overlap-gold: #fbbf24;
}

body.light-theme {
    --bg-color: #f8fafc;
    --surface-color: rgba(255, 255, 255, 0.88);
    --surface-solid: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --border-color: rgba(0, 0, 0, 0.1);
}

.hidden { display: none !important; }

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    overflow: hidden;
}

#map {
    width: 100vw;
    height: 100vh;
    z-index: 1;
    background: #0b1120;
}
body.light-theme #map { background: #e2e8f0; }

/* Glassmorphism */
.glass-panel {
    background: var(--surface-color);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
}
body.light-theme .glass-panel { box-shadow: 0 10px 25px rgba(0, 0, 0, 0.06); }

/* Title Banner */
.map-banner {
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 62px;
    z-index: 1002;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 20px;
    border-radius: 0;
    border-top: none; border-left: none; border-right: none;
}
/* Street-sign title (styled after the UK Gov Pride in Place sign) */
.street-sign {
    height: 44px;
    width: auto;
    display: block;
}
.street-sign .sign-plate {
    fill: var(--surface-solid);
    stroke: var(--text-primary);
    stroke-width: 5;
}
.street-sign .sign-notch {
    fill: var(--surface-solid);
    stroke: var(--text-primary);
    stroke-width: 3;
}
.street-sign text {
    fill: var(--text-primary);
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    font-weight: 700;
    font-size: 30px;
    letter-spacing: 0.5px;
}
.banner-logos {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    gap: 16px;
}
.banner-logos a { display: block; line-height: 0; }
.banner-logos a:hover img { opacity: 0.8; }
.banner-logos img {
    height: 42px;
    width: auto;
    display: block;
    transition: opacity 0.15s;
}

/* Top Controls */
.top-controls {
    position: absolute;
    top: 78px;
    left: 16px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 300px;
}

.search-box { position: relative; width: 100%; }
.search-box input {
    width: 100%;
    padding: 11px 14px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--surface-solid);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    outline: none;
    transition: border-color 0.2s;
}
.search-box input:focus { border-color: var(--color-accent); }

.search-results {
    position: absolute; top: calc(100% + 5px); left: 0; width: 100%;
    background: var(--surface-solid); border: 1px solid var(--border-color);
    border-radius: 8px; max-height: 250px; overflow-y: auto; z-index: 1001;
}
.search-results.hidden { display: none; }
.search-result-item {
    padding: 10px 14px; cursor: pointer;
    border-bottom: 1px solid var(--border-color); font-size: 13px;
}
.search-result-item:hover { background: rgba(255,255,255,0.05); }
body.light-theme .search-result-item:hover { background: rgba(0,0,0,0.04); }
.search-result-item:last-child { border-bottom: none; }
.search-result-name { font-weight: 500; }
.search-result-desc { font-size: 11px; color: var(--text-secondary); margin-top: 2px; }
.search-result-badges { display: flex; gap: 4px; margin-top: 4px; }
.search-result-badges .micro-badge {
    font-size: 9px; padding: 1px 5px; border-radius: 3px;
    font-weight: 600; text-transform: uppercase; letter-spacing: 0.3px;
}
.micro-badge.pip { background: rgba(245,158,11,0.2); color: #f59e0b; }
.micro-badge.efl { background: rgba(99,102,241,0.2); color: #818cf8; }
.micro-badge.se { background: rgba(59,130,246,0.2); color: #60a5fa; }
.micro-badge.ntc { background: rgba(16,185,129,0.2); color: #34d399; }
.micro-badge.ace { background: rgba(236,72,153,0.2); color: #f472b6; }

/* Layers Panel */
.layers-panel {
    padding: 14px;
    /* stay clear of the banner above and the legend bar below */
    max-height: calc(100vh - 220px);
    overflow-y: auto;
}
.layers-panel h3 {
    font-size: 11px;
    margin-bottom: 10px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.layer-group {
    margin-bottom: 8px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}
.layer-group:last-of-type { border-bottom: none; }

.layer-toggle {
    display: flex;
    align-items: center;
    font-size: 13px;
    cursor: pointer;
    padding: 4px 0;
    font-weight: 500;
}
.layer-toggle input[type="checkbox"] {
    margin-right: 8px;
    accent-color: var(--color-accent);
    width: 14px; height: 14px;
}
.layer-label { flex: 1; }
.layer-count {
    font-size: 11px;
    color: var(--text-secondary);
    background: rgba(255,255,255,0.06);
    padding: 1px 6px;
    border-radius: 8px;
    font-weight: 600;
}
body.light-theme .layer-count { background: rgba(0,0,0,0.06); }

/* Layer Swatches */
.layer-swatch {
    display: inline-block;
    width: 12px; height: 12px;
    border-radius: 50%;
    margin-right: 8px;
    flex-shrink: 0;
}
.layer-swatch.small { width: 10px; height: 10px; margin-right: 6px; }
.layer-swatch.pip { background: var(--color-pip); box-shadow: 0 0 6px var(--color-pip-glow); }
.layer-swatch.efl { background: var(--color-efl); box-shadow: 0 0 6px var(--color-efl-glow); }
.layer-swatch.se { background: var(--color-se); box-shadow: 0 0 6px var(--color-se-glow); }
.layer-swatch.ntc { background: var(--color-ntc); box-shadow: 0 0 6px var(--color-ntc-glow); }
.layer-swatch.ace { background: var(--color-ace); box-shadow: 0 0 6px var(--color-ace-glow); }

/* Sub-filters */
.layer-sub {
    padding-left: 34px;
    margin-top: 4px;
}
.layer-sub label {
    display: flex;
    align-items: center;
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 3px;
    cursor: pointer;
}
.layer-sub input[type="checkbox"] {
    margin-right: 6px;
    accent-color: var(--color-accent);
    width: 12px; height: 12px;
}

/* Overlap Finder */
.overlap-finder {
    margin-top: 4px;
    padding-top: 8px;
    border-top: 1px solid var(--border-color);
}
.overlap-btns {
    display: flex;
    gap: 6px;
    margin-bottom: 8px;
}
.overlap-btn {
    flex: 1;
    padding: 6px 0;
    border: 1px solid var(--border-color);
    background: rgba(255,255,255,0.04);
    color: var(--text-secondary);
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s;
}
body.light-theme .overlap-btn { background: rgba(0,0,0,0.03); }
.overlap-btn:hover { background: rgba(255,255,255,0.08); }
body.light-theme .overlap-btn:hover { background: rgba(0,0,0,0.06); }
.overlap-btn.active {
    background: var(--color-overlap-gold);
    color: #0f172a;
    border-color: var(--color-overlap-gold);
}
.overlap-result {
    font-size: 11px;
    color: var(--text-secondary);
    text-align: center;
}

/* Appearance */
.appearance-section {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--border-color);
}
.appearance-section select {
    width: 100%;
    padding: 7px;
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 4px;
    font-family: inherit;
    font-size: 12px;
    outline: none;
}
body.light-theme .appearance-section select { background: rgba(255,255,255,0.5); }

/* Legend — horizontal bar, centred along the bottom */
.legend {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    padding: 10px 18px;
    display: flex;
    align-items: center;
    gap: 18px;
    white-space: nowrap;
}
.legend-item {
    display: flex;
    align-items: center;
    font-size: 12px;
    line-height: 1.3;
    cursor: default;
}
.legend-item .layer-swatch { margin-top: 0; }

/* Sidebar */
.sidebar {
    position: absolute;
    top: 78px;
    bottom: 24px;
    width: 380px;
    z-index: 1000;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
}
.sidebar.right { right: 16px; }
.sidebar.closed { transform: translateX(110%); }

.sidebar-header {
    padding: 18px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}
.header-titles h2 { font-size: 20px; font-weight: 600; margin-bottom: 6px; }
#sb-badges { display: flex; flex-wrap: wrap; gap: 4px; }

.badge {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}
.badge.pip { background: rgba(245,158,11,0.2); color: #fbbf24; border: 1px solid rgba(245,158,11,0.3); }
.badge.efl { background: rgba(99,102,241,0.2); color: #a5b4fc; border: 1px solid rgba(99,102,241,0.3); }
.badge.se { background: rgba(59,130,246,0.2); color: #93c5fd; border: 1px solid rgba(59,130,246,0.3); }
.badge.ntc { background: rgba(16,185,129,0.2); color: #6ee7b7; border: 1px solid rgba(16,185,129,0.3); }
.badge.ace { background: rgba(236,72,153,0.2); color: #f9a8d4; border: 1px solid rgba(236,72,153,0.3); }

.close-btn {
    background: none; border: none;
    color: var(--text-secondary); font-size: 22px;
    cursor: pointer; line-height: 1; padding: 0 4px;
}
.close-btn:hover { color: #fff; }
body.light-theme .close-btn:hover { color: var(--text-primary); }

.sidebar-content { flex: 1; overflow-y: auto; padding: 0; }
.sb-section { padding: 18px; border-bottom: 1px solid var(--border-color); }
.sb-section.hidden { display: none; }
.sb-section:last-child { border-bottom: none; }
.sb-section h3 {
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
}

.overlap-banner {
    background: rgba(148, 163, 184, 0.08);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 13px;
    font-weight: 600;
    color: #93c5fd; /* readable blue on dark theme */
    text-align: center;
}
body.light-theme .overlap-banner {
    color: #1e3a8a; /* dark blue */
    background: rgba(30, 58, 138, 0.05);
    border-color: rgba(30, 58, 138, 0.15);
}

.data-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.data-item { display: flex; flex-direction: column; }
.data-item.full-width { grid-column: 1 / -1; }
.data-item .label {
    font-size: 10px; color: var(--text-secondary);
    text-transform: uppercase; margin-bottom: 3px; letter-spacing: 0.3px;
}
.data-item .value { font-size: 13px; font-weight: 500; }
.data-item .value a { color: var(--color-accent); text-decoration: none; }
.data-item .value a:hover { text-decoration: underline; }

.default-msg p { color: var(--text-secondary); text-align: center; margin-top: 16px; }
#val-notes { font-size: 12px; line-height: 1.5; color: var(--text-secondary); }

/* Custom Marker Styling */
.custom-marker { background: transparent; border: none; }

.marker-inner {
    width: 22px; height: 22px;
    border-radius: 50%;
    background-color: var(--surface-solid);
    border: 3px solid #94a3b8;
    box-shadow: 0 0 8px rgba(0,0,0,0.6);
    transition: transform 0.2s, box-shadow 0.2s;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}
body.light-theme .marker-inner { box-shadow: 0 0 8px rgba(0,0,0,0.15); }

.custom-marker:hover .marker-inner, .custom-marker.active .marker-inner {
    transform: scale(1.35);
    z-index: 1000 !important;
}

/* Single-layer border colours */
.layer-pip-only .marker-inner { border-color: var(--color-pip); box-shadow: 0 0 10px var(--color-pip-glow); }

/* Tier 2: smaller SOLID dots for localised areas (PiP neighbourhoods, SE places) */
.marker-tier2 .marker-inner {
    width: 12px; height: 12px;
    border-width: 1px;
    border-color: rgba(255,255,255,0.85);
}
.marker-tier2-pip .marker-inner {
    background-color: var(--color-pip);
    box-shadow: 0 0 6px var(--color-pip-glow);
}
.marker-tier2-se .marker-inner {
    background-color: var(--color-se);
    box-shadow: 0 0 6px var(--color-se-glow);
}
.layer-efl-only .marker-inner { border-color: var(--color-efl); box-shadow: 0 0 10px var(--color-efl-glow); }
.layer-se-only .marker-inner { border-color: var(--color-se); box-shadow: 0 0 10px var(--color-se-glow); }
.layer-ntc-only .marker-inner { border-color: var(--color-ntc); box-shadow: 0 0 10px var(--color-ntc-glow); }
.layer-ace-only .marker-inner { border-color: var(--color-ace); box-shadow: 0 0 10px var(--color-ace-glow); }

/* Multi-layer markers */
.marker-inner .overlap-count {
    font-size: 8px;
    font-weight: 700;
    color: white;
    z-index: 2;
}

.marker-multi .marker-inner {
    border: none;
    box-shadow: 0 0 14px rgba(251,191,36,0.5);
}
.marker-multi .marker-inner .ring {
    position: absolute;
    border-radius: 50%;
    border-style: solid;
}
.marker-multi .marker-inner .ring.r-pip { border-color: var(--color-pip); }
.marker-multi .marker-inner .ring.r-efl { border-color: var(--color-efl); }
.marker-multi .marker-inner .ring.r-se { border-color: var(--color-se); }
.marker-multi .marker-inner .ring.r-ntc { border-color: var(--color-ntc); }
.marker-multi .marker-inner .ring.r-ace { border-color: var(--color-ace); }

/* Pulse for 3+ overlap */
.marker-multi-3 .marker-inner {
    animation: pulseGold 2s ease-in-out infinite;
}
@keyframes pulseGold {
    0%, 100% { box-shadow: 0 0 10px rgba(251,191,36,0.4); }
    50% { box-shadow: 0 0 20px rgba(251,191,36,0.7), 0 0 30px rgba(251,191,36,0.3); }
}

.marker-icon-overlay {
    width: 10px; height: 10px; color: white;
}
body.light-theme .marker-icon-overlay { color: var(--text-primary); }

/* Marker clustering overrides */
.marker-cluster-small, .marker-cluster-medium, .marker-cluster-large {
    background-color: rgba(99, 102, 241, 0.5);
}
.marker-cluster-small div, .marker-cluster-medium div, .marker-cluster-large div {
    background-color: rgba(99, 102, 241, 0.85);
    color: white;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
}

/* Leaflet tweaks */
.leaflet-container { background: #0b1120; font-family: 'Inter', sans-serif; }
body.light-theme .leaflet-container { background: #e2e8f0; }
.leaflet-bar a { background-color: var(--surface-solid) !important; color: var(--text-primary) !important; border-color: var(--border-color) !important; }
.leaflet-bar a:hover { background-color: #334155 !important; }
body.light-theme .leaflet-bar a:hover { background-color: #e2e8f0 !important; }

/* Responsive */
@media (max-width: 768px) {
    .map-banner { height: 50px; padding: 0 12px; }
    .street-sign { height: 30px; }
    .banner-logos { right: 12px; gap: 8px; }
    .banner-logos img { height: 26px; }
    .top-controls { top: 62px; }
    .sidebar {
        width: calc(100% - 32px);
        bottom: 16px; top: auto;
        max-height: 55vh;
        transform: translateY(150%);
    }
    .sidebar.right { right: 16px; }
    .sidebar.closed { transform: translateY(150%); }
    .top-controls { max-width: calc(100% - 32px); }
    .legend { display: none; }
    .layers-panel { max-height: 40vh; }
}