:root {
  color-scheme: dark;
  --bg: #111417;
  --bg-accent: #1b2026;
  --panel: rgba(21, 25, 30, 0.92);
  --panel-border: rgba(255, 255, 255, 0.08);
  --text: #f3efe6;
  --muted: #a5adaf;
  --accent: #d2a55b;
  --accent-strong: #f2c374;
  --danger: #db6d5c;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Trebuchet MS", "Gill Sans", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(210, 165, 91, 0.15), transparent 28%),
    radial-gradient(circle at top right, rgba(86, 124, 147, 0.14), transparent 32%),
    linear-gradient(180deg, #12161a 0%, #0d1013 100%);
}

.app-shell {
  width: min(1380px, calc(100vw - 28px));
  margin: 0 auto;
  padding: 24px 0 36px;
}

.hero {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 20px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2 {
  font-family: Georgia, "Times New Roman", serif;
}

h1 {
  margin: 0 0 10px;
  font-size: clamp(2.4rem, 4vw, 4rem);
  line-height: 0.95;
}

h2 {
  margin: 0;
  font-size: 1.3rem;
}

.lead,
.board-note,
.message,
.error,
.tiny,
.status-label,
.score-box small {
  line-height: 1.5;
}

.lead {
  margin: 0;
  max-width: 740px;
  color: var(--muted);
  font-size: 1.04rem;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid rgba(242, 195, 116, 0.26);
  background: rgba(242, 195, 116, 0.08);
  font-weight: 700;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(320px, 0.8fr);
  gap: 18px;
  align-items: start;
}

.panel {
  border: 1px solid var(--panel-border);
  border-radius: 26px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.board-panel {
  padding: 18px;
}

.board-wrap {
  display: grid;
  place-items: center;
  padding: 10px;
  border-radius: 22px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01)),
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.06), transparent 30%);
}

#boardCanvas {
  display: block;
  width: min(100%, 900px);
  max-width: 100%;
  touch-action: manipulation;
  cursor: pointer;
}

.board-note {
  margin: 16px 10px 0;
  color: var(--muted);
  font-size: 0.96rem;
}

.sidebar {
  display: grid;
  gap: 18px;
}

.status-panel,
.score-panel,
.history-panel {
  padding: 18px;
}

.panel-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 16px;
}

.tiny {
  color: var(--muted);
  font-size: 0.82rem;
}

.status-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.status-card,
.score-box {
  padding: 14px;
  border-radius: 18px;
  background: var(--bg-accent);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.status-card strong,
.score-box strong {
  display: block;
  margin-top: 6px;
  font-size: 1.5rem;
}

.status-label {
  color: var(--muted);
  font-size: 0.86rem;
}

.actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 16px;
}

button {
  min-height: 46px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  padding: 0 14px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 140ms ease, background 140ms ease, border-color 140ms ease;
}

button:hover:not(:disabled) {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.08);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

button.primary {
  border-color: rgba(242, 195, 116, 0.3);
  background: rgba(242, 195, 116, 0.14);
}

button.danger {
  border-color: rgba(219, 109, 92, 0.35);
  background: rgba(219, 109, 92, 0.12);
}

.message {
  margin: 14px 0 0;
}

.error {
  min-height: 22px;
  margin: 6px 0 0;
  color: #ff9e8f;
}

.score-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.white-box {
  background:
    linear-gradient(180deg, rgba(243, 239, 230, 0.08), rgba(243, 239, 230, 0.03)),
    var(--bg-accent);
}

.history-list {
  margin: 0;
  padding-left: 22px;
  display: grid;
  gap: 8px;
  max-height: 340px;
  overflow: auto;
}

.history-list li {
  color: var(--muted);
  padding-right: 8px;
}

.history-list li.current {
  color: var(--text);
  font-weight: 700;
}

.history-list li.future {
  opacity: 0.5;
}

@media (max-width: 1080px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .hero {
    flex-direction: column;
  }

  .hero-badges {
    justify-content: flex-start;
  }
}

@media (max-width: 720px) {
  .app-shell {
    width: min(100vw, calc(100vw - 18px));
    padding-top: 16px;
    padding-bottom: 22px;
  }

  .board-panel,
  .status-panel,
  .score-panel,
  .history-panel {
    padding: 14px;
  }

  .status-grid,
  .score-grid,
  .actions {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 2.5rem;
  }
}