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

:root {
    --sidebar-width: 360px;
    --header-height: 48px;
    --timeline-height: 80px;
    --bg: #1a1a2e;
    --bg-light: #16213e;
    --accent: #e94560;
    --text: #eee;
    --text-muted: #999;
    --border: #333;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    height: 100vh;
    overflow: hidden;
}

#app {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* Header */
#header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    background: var(--bg-light);
    border-bottom: 1px solid var(--border);
    z-index: 10;
}

#header h1 {
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

#year-display {
    font-size: 24px;
    font-weight: 700;
    color: var(--accent);
    font-variant-numeric: tabular-nums;
}

/* Main area */
#main {
    flex: 1;
    display: flex;
    overflow: hidden;
}

#map {
    flex: 1;
}

/* Sidebar */
#sidebar {
    width: var(--sidebar-width);
    background: var(--bg-light);
    border-left: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

#sidebar-header {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
}

/* Filter toggle button — hidden on desktop, shown on mobile */
#filter-toggle-btn {
    display: none;
}

#category-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.category-btn {
    padding: 4px 10px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: transparent;
    color: var(--text-muted);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.15s;
    opacity: 0.4;
}

.category-btn.active {
    border-color: var(--cat-color, var(--accent));
    color: var(--text);
    background: color-mix(in srgb, var(--cat-color, var(--accent)) 20%, transparent);
    opacity: 1;
}

.category-btn:hover:not(.active) {
    border-color: var(--border);
    color: var(--text);
    opacity: 0.7;
}

/* Events container and list */
#events-container {
    flex: 1;
    display: flex;
    overflow: hidden;
    position: relative;
}

/* Events nav arrows — hidden on desktop */
.events-nav-btn {
    display: none;
}

/* Events list */
#events-list {
    flex: 1;
    overflow-y: auto;
    padding: 12px 16px;
}

/* Event card */
.event-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 10px;
    cursor: pointer;
    transition: all 0.15s;
}

.event-card:hover {
    border-color: var(--accent);
    background: rgba(233, 69, 96, 0.06);
}

.event-card.highlighted {
    border-color: var(--accent);
    background: rgba(233, 69, 96, 0.1);
}

/* Event header: title + category on same row */
.event-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 4px;
}

.event-category {
    display: inline-block;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--accent);
    flex-shrink: 0;
}

.event-title {
    font-size: 14px;
    font-weight: 600;
}

.event-description {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.4;
    margin-bottom: 6px;
}

.event-source {
    font-size: 11px;
    color: var(--text-muted);
}

.event-source a {
    color: var(--accent);
    text-decoration: none;
    opacity: 0.7;
}

.event-source a:hover {
    opacity: 1;
    text-decoration: underline;
}

.event-date {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 2px;
}

.event-quote-toggle {
    font-size: 11px;
    color: var(--accent);
    cursor: pointer;
    border: none;
    background: none;
    padding: 0;
    margin-top: 4px;
    opacity: 0.7;
}

.event-quote-toggle:hover {
    opacity: 1;
}

.event-quote {
    display: none;
    font-size: 12px;
    color: var(--text-muted);
    font-style: italic;
    border-left: 2px solid var(--border);
    padding-left: 8px;
    margin: 6px 0;
    line-height: 1.4;
}

.event-quote.open {
    display: block;
}

/* Timeline */
#timeline-container {
    height: var(--timeline-height);
    background: var(--bg-light);
    border-top: 1px solid var(--border);
    padding: 4px 20px 8px;
    display: flex;
    flex-direction: column;
    gap: 0;
    position: relative;
    user-select: none;
}

#timeline-canvas {
    width: 100%;
    height: 28px;
    cursor: pointer;
}

#timeline-slider {
    width: 100%;
    -webkit-appearance: none;
    appearance: none;
    height: 4px;
    background: rgba(255,255,255,0.08);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
    margin: 0;
}

#timeline-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    border: 2px solid var(--bg-light);
    box-shadow: 0 0 6px rgba(233, 69, 96, 0.4);
}

/* Mobile bar — hidden on desktop */
#mobile-bar {
    display: none;
}

/* Map markers */
.marker-popup .maplibregl-popup-content {
    background: var(--bg-light);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px;
    font-family: inherit;
    max-width: 280px;
}

.marker-popup .maplibregl-popup-tip {
    border-top-color: var(--bg-light);
}

/* Scrollbar */
#events-list::-webkit-scrollbar {
    width: 6px;
}

#events-list::-webkit-scrollbar-track {
    background: transparent;
}

#events-list::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

#events-list::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* No events state */
.no-events {
    text-align: center;
    color: var(--text-muted);
    padding: 40px 20px;
    font-size: 14px;
}

/* ─── Mobile layout ──────────────────────────────────────────────── */
@media (max-width: 768px) {
    body {
        overflow: auto;
    }

    #app {
        height: auto;
        min-height: 100vh;
    }

    /* No top bar on mobile */
    #header {
        display: none;
    }

    #main {
        flex-direction: column;
        overflow: visible;
    }

    #map {
        height: 50vh;
        flex: none;
    }

    #sidebar {
        width: 100%;
        border-left: none;
        border-top: none;
        max-height: none;
        overflow: visible;
    }

    /* Mobile year navigation bar */
    #mobile-bar {
        display: block;
        background: var(--bg-light);
        border-bottom: 1px solid var(--border);
        padding: 10px 16px 8px;
    }

    #mobile-year-row {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 20px;
        margin-bottom: 8px;
    }

    .year-nav-btn {
        background: transparent;
        border: 1px solid var(--border);
        color: var(--text);
        width: 38px;
        height: 38px;
        border-radius: 50%;
        cursor: pointer;
        font-size: 18px;
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
        transition: background 0.1s;
    }

    .year-nav-btn:active {
        background: rgba(255, 255, 255, 0.1);
    }

    #mobile-year-btn {
        font-size: 30px;
        font-weight: 700;
        color: var(--accent);
        background: transparent;
        border: none;
        cursor: pointer;
        font-variant-numeric: tabular-nums;
        min-width: 90px;
        text-align: center;
        padding: 0;
        /* subtle tap hint */
        border-bottom: 1px dashed rgba(233, 69, 96, 0.4);
    }

    #mobile-slider {
        width: 100%;
        -webkit-appearance: none;
        appearance: none;
        height: 4px;
        background: rgba(255, 255, 255, 0.08);
        border-radius: 2px;
        outline: none;
        cursor: pointer;
        margin: 0;
    }

    #mobile-slider::-webkit-slider-thumb {
        -webkit-appearance: none;
        appearance: none;
        width: 16px;
        height: 16px;
        border-radius: 50%;
        background: var(--accent);
        cursor: pointer;
        border: 2px solid var(--bg-light);
        box-shadow: 0 0 6px rgba(233, 69, 96, 0.4);
    }

    /* Hide desktop timeline footer */
    #timeline-container {
        display: none;
    }

    /* Filter toggle button */
    #sidebar-header {
        padding: 10px 12px;
    }

    #filter-toggle-btn {
        display: flex;
        align-items: center;
        gap: 6px;
        background: transparent;
        border: 1px solid var(--border);
        color: var(--text-muted);
        padding: 6px 12px;
        border-radius: 12px;
        font-size: 12px;
        cursor: pointer;
        width: 100%;
        transition: all 0.15s;
        margin-bottom: 0;
    }

    #filter-toggle-btn.active {
        color: var(--text);
        border-color: var(--accent);
        background: rgba(233, 69, 96, 0.1);
    }

    /* Filters collapse on mobile */
    #category-filters {
        display: none;
        flex-wrap: wrap;
        gap: 6px;
        padding-top: 10px;
    }

    #category-filters.filters-open {
        display: flex;
    }

    /* Events container: flex row with side arrows */
    #events-container {
        display: flex;
        align-items: flex-start;
        overflow: visible;
    }

    /* Side year-nav arrows */
    .events-nav-btn {
        display: flex;
        flex: 0 0 auto;
        width: 34px;
        align-items: center;
        justify-content: center;
        align-self: stretch;
        min-height: 80px;
        background: rgba(22, 33, 62, 0.95);
        border: 1px solid var(--border);
        border-radius: 4px;
        color: var(--text-muted);
        font-size: 18px;
        cursor: pointer;
        margin: 8px 2px;
        transition: color 0.15s, border-color 0.15s;
        position: sticky;
        top: 50vh;
    }

    .events-nav-btn:active {
        color: var(--accent);
        border-color: var(--accent);
    }

    #events-list {
        flex: 1;
        overflow-y: visible;
        padding: 8px 6px;
        /* touch-action: pan-y keeps vertical scroll but allows horizontal swipe detection */
        touch-action: pan-y;
    }

    /* Compact event cards */
    .event-card {
        padding: 10px 10px;
        margin-bottom: 8px;
    }

    .event-description {
        font-size: 12px;
        margin-bottom: 4px;
    }

    .event-title {
        font-size: 13px;
    }

    .event-category {
        font-size: 9px;
    }
}