:root {
  --bg-start: #07111f;
  --bg-end: #03070d;
  --panel: rgba(10, 22, 38, 0.82);
  --panel-border: rgba(138, 212, 255, 0.18);
  --text: #eff7ff;
  --muted: #9db7ca;
  --accent: #68d6ff;
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.38);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, rgba(61, 119, 160, 0.2), transparent 38%), linear-gradient(160deg, var(--bg-start), var(--bg-end));
}
button { font: inherit; cursor: pointer; }
.app-shell { position: relative; min-height: 100vh; padding: 24px; overflow: hidden; }
.app-shell::before, .app-shell::after { content: ""; position: fixed; width: 38vw; height: 38vw; pointer-events: none; filter: blur(10px); }
.app-shell::before { top: -10vw; right: -8vw; background: radial-gradient(circle, rgba(86, 194, 255, 0.18), transparent 65%); }
.app-shell::after { bottom: -12vw; left: -12vw; background: radial-gradient(circle, rgba(255, 155, 75, 0.12), transparent 65%); }
.hud, .info-card, .canvas-wrap, .overlay-panel { border: 1px solid var(--panel-border); background: var(--panel); backdrop-filter: blur(12px); box-shadow: var(--shadow); }
.hud { display: grid; grid-template-columns: minmax(220px, 1.4fr) 2fr minmax(180px, 0.9fr); gap: 18px; align-items: center; padding: 20px 24px; border-radius: 24px; }
.eyebrow { margin: 0 0 4px; text-transform: uppercase; letter-spacing: 0.28em; font-size: 0.74rem; color: var(--accent); }
.brand-block h1, .overlay-panel h2, .info-card h2 { margin: 0; font-family: "Arial Black", "Impact", sans-serif; }
.hud-panels { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; }
.panel, .meter-panel { padding: 12px 14px; border-radius: 16px; background: rgba(255, 255, 255, 0.04); }
.panel { display: flex; flex-direction: column; gap: 4px; }
.panel-label { font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.18em; color: var(--muted); }
.panel strong { font-size: 1.35rem; }
.meter-track { margin-top: 8px; height: 14px; border-radius: 999px; background: rgba(255, 255, 255, 0.08); overflow: hidden; }
.meter-fill { height: 100%; width: 0%; border-radius: inherit; background: linear-gradient(90deg, #4be2ff, #9cf7ff 60%, #ffe28f); transition: width 180ms ease; }
.game-layout { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 24px; margin-top: 24px; align-items: start; }
.sidebar { display: flex; flex-direction: column; gap: 16px; }
.info-card { border-radius: 22px; padding: 18px; }
.info-card h2 { margin-bottom: 10px; font-size: 1.05rem; }
.info-card p, .status-list { margin: 0; color: var(--muted); font-size: 1.03rem; }
.info-card p + p { margin-top: 10px; }
.status-list { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.sidebar-actions, .overlay-actions, .board-actions { display: flex; gap: 12px; }
.sidebar-actions { flex-direction: column; }
.board-actions { justify-content: center; margin-top: 16px; flex-wrap: wrap; }
.primary-button, .secondary-button { border: none; border-radius: 999px; padding: 13px 18px; font-weight: 700; letter-spacing: 0.06em; }
.primary-button { color: #02111a; background: linear-gradient(135deg, #74e8ff, #ffc86b); }
.secondary-button { color: var(--text); background: rgba(255, 255, 255, 0.08); border: 1px solid rgba(255, 255, 255, 0.08); }
.board-button { min-width: 180px; }
.board-frame { min-width: 0; display: flex; flex-direction: column; justify-content: center; }
.canvas-wrap { position: relative; border-radius: 32px; padding: 18px; width: 100%; display: flex; justify-content: center; }
canvas { width: min(100%, 960px); height: auto; aspect-ratio: 1 / 1; display: block; border-radius: 24px; background: rgba(0, 0, 0, 0.25); max-width: 100%; max-height: calc(100vh - 220px); }
.message-banner { position: absolute; left: 50%; bottom: 28px; transform: translateX(-50%); padding: 10px 18px; border-radius: 999px; background: rgba(7, 18, 31, 0.9); border: 1px solid rgba(255, 255, 255, 0.14); letter-spacing: 0.08em; text-transform: uppercase; }
.hidden { display: none; }
.overlay { position: fixed; inset: 0; display: none; align-items: center; justify-content: center; padding: 24px; background: rgba(1, 5, 11, 0.72); }
.overlay.active { display: flex; }
.overlay-panel { width: min(560px, 100%); border-radius: 30px; padding: 34px; text-align: center; }
.overlay-panel p { color: var(--muted); font-size: 1.08rem; }
@media (max-width: 1080px) { .hud { grid-template-columns: 1fr; } .game-layout { grid-template-columns: 1fr; } }
@media (max-width: 720px) { .app-shell { padding: 14px; } .hud-panels { grid-template-columns: repeat(2, minmax(0, 1fr)); } .overlay-actions { flex-direction: column; } }




.scoring-panel { text-align: left; }
.scoring-list { margin: 14px 0 18px; padding-left: 22px; color: var(--muted); font-size: 1.03rem; }
.scoring-list li { margin-bottom: 8px; }