:root {
    --bg: #12151b;
    --panel: #1a1f27;
    --panel-2: #212734;
    --border: #2c333f;
    --text: #e6e9ef;
    --muted: #8b95a7;
    --accent: #4f9cf9;
    --ok: #4ec97b;
    --warn: #e8b455;
    --err: #f0645b;
    --gold: #d8a94a;
    --mono: ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 14px/1.45 system-ui, -apple-system, Segoe UI, sans-serif;
}

.topbar {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 10px 16px;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
}

.brand { font-weight: 600; letter-spacing: .3px; }
.status { display: flex; align-items: center; gap: 10px; flex: 1; min-width: 0; }
.topbar-actions { display: flex; gap: 8px; }

.doclink {
    align-self: center;
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--muted);
    text-decoration: none;
    font-size: 13px;
}
.doclink:hover { border-color: var(--accent); color: var(--text); }

.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--muted); }
.dot.open { background: var(--ok); }
.dot.closed { background: var(--err); }

.muted { color: var(--muted); font-size: 12px; }

main {
    display: grid;
    grid-template-columns: minmax(340px, 1fr) minmax(340px, 1fr) minmax(360px, 1.1fr);
    gap: 14px;
    padding: 14px;
    align-items: start;
}

@media (max-width: 1200px) { main { grid-template-columns: 1fr; } }

.panel {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 12px;
}

.panel h2 {
    margin: 0 0 10px;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--muted);
}

.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-bottom: 8px; }

button {
    background: var(--panel-2);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 6px 12px;
    font: inherit;
    cursor: pointer;
}

button:hover:not(:disabled) { border-color: var(--accent); }
button:disabled { opacity: .45; cursor: not-allowed; }
button.primary { background: var(--accent); border-color: var(--accent); color: #0b1017; font-weight: 600; }
button.gold { background: var(--gold); border-color: var(--gold); color: #1b1405; font-weight: 600; }

select, input {
    background: var(--panel-2);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 6px 8px;
    font: inherit;
}

/* ------------------------------------------------------------------ board */

.board {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 6px;
    margin: 4px 0 10px;
    max-width: 420px;
}

.cell {
    aspect-ratio: 1;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--panel-2);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    font-size: 11px;
    text-align: center;
    transition: background .15s, border-color .15s, transform .15s;
}

.cell .id { font: 600 15px/1 var(--mono); }
.cell.win { border-color: var(--ok); background: rgba(78, 201, 123, .18); transform: scale(1.04); }
.cell.exploding { border-color: var(--err); background: rgba(240, 100, 91, .2); }
.cell.boom { border-color: var(--warn); background: rgba(232, 180, 85, .22); }
.cell.special { border-color: var(--gold); }

.legend { display: flex; gap: 10px; flex-wrap: wrap; font-size: 11px; color: var(--muted); }

.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px 12px; font-size: 12px; }
.stats b { font: 600 13px/1.4 var(--mono); color: var(--text); }
.stats span { color: var(--muted); }

.pill {
    display: inline-block;
    padding: 1px 7px;
    border-radius: 999px;
    border: 1px solid var(--border);
    font-size: 11px;
    color: var(--muted);
}
.pill.on { border-color: var(--ok); color: var(--ok); }

/* ------------------------------------------------------------------ tower */

.tower { display: flex; flex-direction: column-reverse; gap: 6px; }

.tower-level { display: grid; grid-template-columns: 32px repeat(3, 1fr); gap: 6px; align-items: center; }
.tower-level .label { font: 12px/1 var(--mono); color: var(--muted); }

.tower-field {
    border: 1px solid var(--border);
    background: var(--panel-2);
    border-radius: 6px;
    padding: 8px 4px;
    text-align: center;
    font: 600 12px/1.2 var(--mono);
    cursor: pointer;
}

.tower-field:disabled { cursor: default; }
.tower-field.hidden { color: var(--muted); }
.tower-field.prize { border-color: var(--ok); color: var(--ok); }
.tower-field.collect { border-color: var(--warn); color: var(--warn); }
.tower-field.jackpot { border-color: var(--gold); color: var(--gold); }
.tower-field.picked { outline: 2px solid var(--accent); }
.tower-level.active .tower-field { border-style: dashed; }

/* -------------------------------------------------------------------- log */

.log { max-height: 70vh; overflow: auto; font: 12px/1.5 var(--mono); }
.log-entry { border-bottom: 1px solid var(--border); padding: 5px 0; }
.log-entry summary { cursor: pointer; display: flex; gap: 8px; align-items: baseline; }
.log-entry pre { margin: 6px 0 0; white-space: pre-wrap; word-break: break-word; color: var(--muted); }
.dir { font-weight: 700; }
.dir.in { color: var(--accent); }
.dir.out { color: var(--ok); }
.dir.system { color: var(--muted); }
.action { color: var(--text); }
.seq { color: var(--muted); }