:root {
    --bg: #0a0c11;
    --panel: rgba(14, 17, 24, 0.94);
    --fg: #e6e9ef;
    --muted: #8b93a5;
    --accent: #ff9a3c;
    --accent2: #4d8dff;
    --danger: #ff4646;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    height: 100%;
    background: var(--bg);
    color: var(--fg);
    overflow: hidden;
}

#scene {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
    touch-action: none;
}

#ui {
    position: fixed;
    inset: 0;
    pointer-events: none;
}

#ui button, #ui select, #ui input, #ui a {
    pointer-events: auto;
    font: inherit;
}

body.miner #scene {
    cursor: none;
}

.btn {
    background: #1c2230;
    color: var(--fg);
    border: 1px solid #2f3848;
    border-radius: 8px;
    padding: 8px 14px;
    cursor: pointer;
    transition: background 0.12s, transform 0.08s;
}

.btn:hover {
    background: #26304a;
}

.btn:active {
    transform: translateY(1px);
}

.btn.primary {
    background: var(--accent);
    color: #1a0f05;
    border-color: transparent;
    font-weight: 600;
}

.btn.primary:hover {
    background: #ffb066;
}

.btn.small {
    padding: 4px 10px;
    font-size: 0.85em;
}

.btn.active {
    outline: 2px solid var(--accent);
}

.overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.55);
    pointer-events: auto;
    backdrop-filter: blur(4px);
}

.overlay.hidden {
    display: none;
}

.panel {
    background: var(--panel);
    border: 1px solid #2a3142;
    border-radius: 12px;
    padding: 20px 24px;
    min-width: 320px;
    max-width: min(92vw, 600px);
    max-height: 90vh;
    overflow: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

.panel h1, .panel h2 {
    margin: 0 0 12px;
    font-weight: 600;
}

.panel h1 {
    font-size: 1.8em;
    letter-spacing: 0.02em;
}

.panel h2 {
    font-size: 1.3em;
}

.panel .sub {
    color: var(--muted);
    margin: -8px 0 16px;
}

.row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 6px 0;
}

.row select, .row input[type="number"], .row input[type="text"] {
    background: #10141c;
    color: var(--fg);
    border: 1px solid #2f3848;
    border-radius: 6px;
    padding: 4px 8px;
    min-width: 120px;
}

.row input[type="range"] {
    width: 140px;
}

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}

.panel code {
    background: #10141c;
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--accent2);
}

.panel dl {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 6px 16px;
    margin: 12px 0;
}

.panel dt {
    color: var(--muted);
}

.panel dd {
    margin: 0;
    font-variant-numeric: tabular-nums;
}

.levels {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 16px;
}

.level {
    display: grid;
    grid-template-columns: 28px 1fr auto auto;
    align-items: center;
    gap: 12px;
    text-align: left;
    background: #131823;
    color: var(--fg);
    border: 1px solid #262e3d;
    border-radius: 8px;
    padding: 8px 12px;
    cursor: pointer;
}

.level:hover {
    background: #1b2233;
}

.level.current {
    border-color: var(--accent);
}

.level .num {
    color: var(--muted);
    font-weight: 600;
}

.level .name small {
    display: block;
    color: var(--muted);
    font-size: 0.8em;
}

.level .best {
    color: var(--muted);
    font-variant-numeric: tabular-nums;
    min-width: 70px;
    text-align: right;
}

.stars {
    color: var(--accent);
    letter-spacing: 0.05em;
}

.stars.big {
    font-size: 2em;
    margin: 6px 0 10px;
}

.custom {
    border-top: 1px solid #262e3d;
    padding-top: 12px;
}

.custom .grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 4px 16px;
}

.end.lost h2 {
    color: var(--danger);
}

.end.won h2 {
    color: #3ddc5a;
}