:root {
  --bg: #0f1720;
  --panel: #17222e;
  --panel-2: #1e2c3a;
  --accent: #f2b705;
  --accent-2: #37c978;
  --danger: #e5484d;
  --text: #eef3f7;
  --text-dim: #93a3b3;
  --radius: 16px;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: radial-gradient(circle at top, #16222e, #0b131b 70%);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 24px 16px 60px;
}

.container {
  width: 100%;
  max-width: 560px;
}

h1, h2, h3 { margin: 0 0 8px; }

.brand {
  text-align: center;
  margin-bottom: 32px;
}
.brand .icon { font-size: 48px; }
.brand h1 { font-size: 22px; letter-spacing: 1px; text-transform: uppercase; }
.brand p { color: var(--text-dim); margin: 4px 0 0; }

.card {
  background: var(--panel);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 16px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

.btn {
  display: block;
  width: 100%;
  padding: 16px;
  border: none;
  border-radius: 12px;
  background: var(--accent);
  color: #1a1200;
  font-size: 17px;
  font-weight: 700;
  cursor: pointer;
  margin-bottom: 12px;
  transition: transform .1s ease;
}
.btn:active { transform: scale(0.97); }
.btn.secondary {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid #2c3d4d;
}
.btn.success { background: var(--accent-2); color: #072b16; }
.btn.danger { background: var(--danger); color: #2b0709; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

label {
  display: block;
  margin-bottom: 6px;
  color: var(--text-dim);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: .5px;
}

input[type=text], input[type=number] {
  width: 100%;
  padding: 14px;
  border-radius: 10px;
  border: 1px solid #2c3d4d;
  background: #0e1922;
  color: var(--text);
  font-size: 16px;
  margin-bottom: 16px;
}

.dice-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}
.dice-btn {
  aspect-ratio: 1;
  border-radius: 14px;
  border: 1px solid #2c3d4d;
  background: var(--panel-2);
  color: var(--text);
  font-size: 28px;
  font-weight: 700;
  cursor: pointer;
}
.dice-btn.selected { background: var(--accent); color: #1a1200; border-color: var(--accent); }

.hud {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--text-dim);
}
.hud .code { letter-spacing: 2px; font-weight: 700; color: var(--text); }

.current-player {
  text-align: center;
  padding: 20px 0;
}
.current-player .label { color: var(--text-dim); font-size: 13px; text-transform: uppercase; letter-spacing: 1px; }
.current-player .name { font-size: 30px; font-weight: 800; margin: 4px 0; }
.current-player .balance { font-size: 26px; color: var(--accent-2); font-weight: 700; }

.others {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 8px;
}
.others .chip {
  background: var(--panel-2);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--text-dim);
}

.scanner-wrap { position: relative; border-radius: 12px; overflow: hidden; margin-bottom: 16px; background:#000; }
#qr-video { width: 100%; display: block; }

.result-banner {
  text-align: center;
  padding: 24px 12px;
  border-radius: 14px;
  margin-bottom: 16px;
}
.result-banner.gain { background: rgba(55,201,120,0.15); border: 1px solid var(--accent-2); }
.result-banner.loss { background: rgba(229,72,77,0.15); border: 1px solid var(--danger); }
.result-banner.neutral { background: var(--panel-2); border: 1px solid #2c3d4d; }
.result-banner .amount { font-size: 34px; font-weight: 800; margin: 6px 0; }
.result-banner .amount.gain { color: var(--accent-2); }
.result-banner .amount.loss { color: var(--danger); }

.ranking-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  border-radius: 12px;
  background: var(--panel-2);
  margin-bottom: 10px;
}
.ranking-row.winner { background: linear-gradient(90deg, rgba(242,183,5,0.25), transparent); border: 1px solid var(--accent); }
.ranking-row .pos { font-weight: 800; width: 28px; }
.ranking-row .name { flex: 1; font-weight: 600; }
.ranking-row .balance { font-weight: 700; }

.error-box {
  background: rgba(229,72,77,0.15);
  border: 1px solid var(--danger);
  color: #ffd7d8;
  padding: 12px 16px;
  border-radius: 10px;
  margin-bottom: 16px;
  font-size: 14px;
  display: none;
}
.error-box.show { display: block; }

.center-text { text-align: center; }
.dim { color: var(--text-dim); }
.mt { margin-top: 16px; }
.hidden { display: none !important; }

.tabs { display: flex; gap: 8px; margin-bottom: 16px; }
.tabs button {
  flex: 1;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid #2c3d4d;
  background: var(--panel-2);
  color: var(--text-dim);
  cursor: pointer;
}
.tabs button.active { background: var(--accent); color: #1a1200; border-color: var(--accent); }

.player-input-row { display: flex; align-items: center; gap: 8px; }
.player-input-row .num { width: 24px; color: var(--text-dim); font-weight: 700; }