:root {
  --bg: #f6f4ef;
  --surface: #ffffff;
  --text: #1d1d1b;
  --muted: #6b6a66;
  --accent: #b5371f;
  --accent-text: #ffffff;
  --border: #e2ded4;
  --me: #e9eef6;
  --sam: #f3ece3;
  --error: #b00020;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #151514;
    --surface: #1f1f1d;
    --text: #ecebe7;
    --muted: #a3a29c;
    --accent: #e0643f;
    --accent-text: #151514;
    --border: #34332f;
    --me: #24303f;
    --sam: #352b22;
    --error: #ff6b81;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}
a { color: var(--accent); }
main { max-width: 860px; margin: 0 auto; padding: 0 16px 32px; }

.site-header, .site-footer {
  max-width: 860px; margin: 0 auto; padding: 16px;
  display: flex; justify-content: space-between; gap: 16px; align-items: center;
}
.site-footer { color: var(--muted); font-size: 0.85rem; display: block; text-align: center; }
.brand { font-weight: 800; text-decoration: none; color: var(--text); letter-spacing: -0.02em; }

.intro h1 { font-size: clamp(1.5rem, 4vw, 2.1rem); line-height: 1.2; margin: 8px 0; }
.intro p { color: var(--muted); }

.panel {
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
  padding: 20px; margin-top: 16px;
}
h2 { font-size: 1.1rem; margin: 0 0 12px; }

.cars, .levels { display: grid; gap: 10px; margin-bottom: 20px; }
.car, .level {
  display: grid; gap: 2px; padding: 12px 12px 12px 40px; position: relative;
  border: 1px solid var(--border); border-radius: 10px; cursor: pointer;
}
.car input, .level input { position: absolute; left: 14px; top: 16px; }
.car:has(input:checked), .level:has(input:checked) { border-color: var(--accent); }
.car-title, .level-name { font-weight: 700; }
.car-meta, .car-desc, .level-summary { color: var(--muted); font-size: 0.9rem; }
.car-price { font-weight: 700; color: var(--accent); }

button {
  font: inherit; border-radius: 8px; padding: 10px 16px; cursor: pointer;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
}
button.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); font-weight: 700; }
button.ghost { background: transparent; }
button:disabled { opacity: 0.6; cursor: wait; }

.game-bar { display: flex; flex-wrap: wrap; gap: 8px 16px; font-size: 0.9rem; color: var(--muted); margin-bottom: 12px; }
#game-car { font-weight: 700; color: var(--text); }

.chat {
  display: flex; flex-direction: column; gap: 10px;
  max-height: 55vh; overflow-y: auto; padding: 4px; margin-bottom: 12px;
}
.bubble { max-width: 85%; padding: 10px 12px; border-radius: 12px; }
.bubble p { margin: 2px 0 0; white-space: pre-wrap; overflow-wrap: anywhere; }
.bubble .who { font-size: 0.75rem; font-weight: 700; color: var(--muted); }
.bubble small { display: block; color: var(--muted); font-size: 0.75rem; margin-top: 4px; }
.bubble.me { align-self: flex-end; background: var(--me); }
.bubble.sam { align-self: flex-start; background: var(--sam); }

.composer { display: flex; gap: 8px; }
input { font: inherit; padding: 10px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg); color: var(--text); }
.composer input { flex: 1; min-width: 0; }
.actions { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; margin-top: 16px; align-items: center; }
.guess { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; font-size: 0.9rem; }
.guess input { width: 120px; }

.error { color: var(--error); min-height: 1.5em; margin: 8px 0 0; }
.prose li { margin-bottom: 6px; }