:root {
    --bg-main: #ffffff;
    --bg-panel: #f8f9fa;
    --bg-input: #ffffff;
    --bg-hover: #f0f1f3;
    --bg-active: #e8eaed;
    --border: #dfe1e5;
    --border-light: #e8eaed;
    --text-main: #1a1a2e;
    --text-secondary: #3c4043;
    --text-muted: #80868b;
    --accent: #374151;
    --accent-hover: #1f2937;
    --hot: #c0392b;
    --hot-hover: #a93226;
    --cold: #2980b9;
    --cold-hover: #2471a3;
    --danger: #dc2626;
    --danger-bg: rgba(220, 38, 38, 0.06);
    --danger-border: rgba(220, 38, 38, 0.15);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.1);
    --radius: 10px;
    --radius-sm: 6px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font);
    color: var(--text-main);
    background-color: #e5e5e5;
    overflow: hidden;
}

#map {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 100%;
    z-index: 1;
}

/* ── Sidebar Rail ───────────────────────────────────── */
#sidebar-rail {
    position: absolute;
    top: 16px;
    left: 16px;
    z-index: 20;
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: var(--bg-main);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 6px;
    box-shadow: var(--shadow-md);
}

.rail-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    color: var(--text-muted);
    transition: all var(--transition);
    position: relative;
}

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

.rail-btn.active {
    background: var(--accent);
    color: #ffffff;
    box-shadow: 0 2px 6px rgba(55, 65, 81, 0.25);
}

.rail-btn svg {
    width: 20px;
    height: 20px;
    stroke-width: 1.8;
}

/* ── Slide-out Panel ────────────────────────────────── */
#sidebar-panel {
    position: absolute;
    top: 16px;
    left: 72px; /* rail width + gap */
    z-index: 15;
    width: 340px;
    max-height: calc(100vh - 32px);
    background: var(--bg-main);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    overflow-y: auto;
    overflow-x: hidden;
    transform: translateX(-20px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

#sidebar-panel.open {
    transform: translateX(0);
    opacity: 1;
    pointer-events: all;
}

/* scrollbar styling */
#sidebar-panel::-webkit-scrollbar {
    width: 4px;
}
#sidebar-panel::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

/* ── Panel Content ──────────────────────────────────── */
.tool-panel {
    display: none;
}

.tool-panel.visible {
    display: block;
}

.panel-header {
    padding: 18px 20px 14px;
    border-bottom: 1px solid var(--border-light);
}

.panel-header h2 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: -0.01em;
    margin-bottom: 4px;
}

.panel-body {
    padding: 16px 20px 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.help-text {
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.5;
}

.input-label {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

/* ── Inputs ─────────────────────────────────────────── */
.input-row {
    display: flex;
    gap: 6px;
    align-items: center;
}

input[type="text"],
input[type="number"] {
    flex: 1;
    background: var(--bg-input);
    border: 1px solid var(--border);
    color: var(--text-main);
    padding: 9px 12px;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.82rem;
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}

input[type="text"]:focus,
input[type="number"]:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(55, 65, 81, 0.08);
}

input::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

/* ── Buttons ────────────────────────────────────────── */
button {
    font-family: var(--font);
    font-weight: 500;
    font-size: 0.82rem;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.small-icon-btn {
    width: 34px;
    height: 34px;
    min-width: 34px;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    color: var(--text-muted);
    border-radius: var(--radius-sm);
}

.small-icon-btn:hover {
    background: var(--bg-active);
    color: var(--text-secondary);
}

.small-icon-btn.pin-active {
    background: var(--accent);
    color: #ffffff;
    border-color: var(--accent);
}

.small-icon-btn svg {
    width: 16px;
    height: 16px;
    stroke-width: 1.8;
}

.button-row {
    display: flex;
    gap: 8px;
    margin-top: 4px;
}

.action-btn {
    flex: 1;
    padding: 10px 0;
    background: var(--accent);
    color: #ffffff;
    font-weight: 600;
    border-radius: var(--radius-sm);
}

.action-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

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

.hot-btn {
    background: var(--hot);
}
.hot-btn:hover {
    background: var(--hot-hover);
}

.cold-btn {
    background: var(--cold);
}
.cold-btn:hover {
    background: var(--cold-hover);
}

/* ── Toggle Buttons ─────────────────────────────────── */
.toggle-row {
    display: flex;
    gap: 4px;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 3px;
}

.toggle-btn {
    flex: 1;
    padding: 7px 0;
    background: transparent;
    color: var(--text-muted);
    font-weight: 500;
    border-radius: 4px;
    font-size: 0.78rem;
}

.toggle-btn.active {
    background: var(--accent);
    color: #ffffff;
    box-shadow: 0 1px 4px rgba(55, 65, 81, 0.2);
}

.toggle-btn:not(.active):hover {
    background: var(--bg-hover);
    color: var(--text-secondary);
}

/* ── Distance Badge ─────────────────────────────────── */
.distance-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.distance-badge svg {
    color: var(--text-muted);
}

/* ── Clues / Measurements List ──────────────────────── */
.clues-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    max-height: 260px;
    overflow-y: auto;
}

.clues-list::-webkit-scrollbar {
    width: 3px;
}
.clues-list::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

.clue-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    background: var(--bg-panel);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    transition: background var(--transition);
}

.clue-item:hover {
    background: var(--bg-hover);
}

.clue-icon {
    width: 28px;
    height: 28px;
    min-width: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-active);
    border-radius: 6px;
    color: var(--text-secondary);
}

.clue-icon svg {
    width: 14px;
    height: 14px;
}

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

.clue-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.clue-detail {
    font-size: 0.68rem;
    color: var(--text-muted);
    margin-top: 1px;
}

.clue-delete {
    width: 28px;
    height: 28px;
    min-width: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: 6px;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition);
}

.clue-delete:hover {
    background: var(--danger-bg);
    color: var(--danger);
}

.clue-delete svg {
    width: 14px;
    height: 14px;
}

.empty-state {
    font-size: 0.78rem;
    color: var(--text-muted);
    text-align: center;
    padding: 20px 0;
}

/* ── Danger Button ──────────────────────────────────── */
.danger-btn {
    width: 100%;
    padding: 10px 0;
    background: var(--danger-bg);
    color: var(--danger);
    border: 1px solid var(--danger-border);
    font-weight: 600;
    border-radius: var(--radius-sm);
    margin-top: 4px;
}

.danger-btn:hover {
    background: var(--danger);
    color: #ffffff;
    border-color: var(--danger);
}

/* ── LGA Checkbox List ──────────────────────────────── */
.lga-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
    max-height: 340px;
    overflow-y: auto;
}

.lga-list::-webkit-scrollbar {
    width: 3px;
}
.lga-list::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

.lga-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    background: var(--bg-panel);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--transition);
    user-select: none;
}

.lga-item:hover {
    background: var(--bg-hover);
}

.lga-item.marked {
    opacity: 0.5;
    pointer-events: none;
}

.lga-item input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--accent);
    cursor: pointer;
    flex-shrink: 0;
}

.lga-item label {
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-main);
    cursor: pointer;
    flex: 1;
}

.lga-item .lga-status {
    font-size: 0.68rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* ── Mapbox overrides ───────────────────────────────── */
.mapboxgl-ctrl-bottom-right {
    opacity: 0.6;
}

.mapboxgl-ctrl-bottom-left {
    opacity: 0.6;
}

/* ── Station Tooltip ───────────────────────────────── */
.station-tooltip .mapboxgl-popup-content {
    background: var(--bg-main);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 6px 10px;
    box-shadow: var(--shadow-sm);
    font-family: var(--font);
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-main);
}

.station-tooltip .mapboxgl-popup-tip {
    border-top-color: var(--bg-main);
}