:root {
  --bg: #07111f;
  --bg-soft: rgba(13, 24, 40, 0.78);
  --panel: rgba(10, 20, 34, 0.78);
  --line: rgba(255, 255, 255, 0.08);
  --text: #eaf2ff;
  --muted: #96a6c2;
  --primary: #6ee7b7;
  --primary-strong: #34d399;
  --accent: #60a5fa;
  --danger: #fb7185;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(96, 165, 250, 0.18), transparent 30%),
    radial-gradient(circle at top right, rgba(110, 231, 183, 0.14), transparent 25%),
    linear-gradient(135deg, #040814 0%, #07111f 45%, #0a1626 100%);
}

.app-shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px;
}

.hero, .panel, .board-panel {
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero {
  border-radius: 24px;
  padding: 28px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  margin-bottom: 24px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: 12px;
}

h1 {
  margin: 0;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.05;
}

.subtitle {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 16px;
}

.stats-card {
  min-width: 240px;
  display: grid;
  gap: 12px;
}

.stat {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 14px 16px;
  background: rgba(255,255,255,0.03);
}

.stat span {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 6px;
}

.stat strong {
  font-size: 28px;
}

.game-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 24px;
}

.board-panel, .panel {
  border-radius: 24px;
}

.board-panel {
  padding: 20px;
}

.board-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(96, 165, 250, 0.15);
  color: #d9e7ff;
  border: 1px solid rgba(96, 165, 250, 0.18);
}

.actions {
  display: flex;
  gap: 10px;
}

.btn {
  border: 0;
  border-radius: 14px;
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: transform .15s ease, opacity .15s ease, background .2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(1px) scale(0.99); }
.btn.primary { background: linear-gradient(135deg, var(--primary), var(--primary-strong)); color: #062217; }
.btn.secondary { background: rgba(255,255,255,0.08); color: var(--text); border: 1px solid var(--line); }
.btn.large { width: 100%; padding: 14px 18px; font-size: 16px; }

.board-wrap {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.08);
}

canvas {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  background: linear-gradient(180deg, rgba(5,10,18,0.85), rgba(8,15,25,0.95));
}

.overlay {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(3, 8, 16, 0.62);
  padding: 24px;
}
.overlay.visible { display: flex; }
.overlay-card {
  width: min(100%, 360px);
  background: rgba(7, 17, 31, 0.92);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 22px;
  text-align: center;
  box-shadow: var(--shadow);
}
.overlay-card h2 { margin: 0 0 10px; }
.overlay-card p { margin: 0 0 18px; color: var(--muted); line-height: 1.6; }

.sidebar {
  display: grid;
  gap: 24px;
}

.panel {
  padding: 20px;
}
.panel h3 { margin-top: 0; margin-bottom: 14px; }
.panel ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.8;
}

.touch-controls {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}
.middle-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  width: 100%;
}
.control-btn {
  width: 72px;
  height: 72px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.06);
  color: var(--text);
  font-size: 28px;
  font-weight: 800;
  cursor: pointer;
}
.control-btn:active { background: rgba(110, 231, 183, 0.22); }

@media (max-width: 980px) {
  .hero, .game-layout { grid-template-columns: 1fr; display: grid; }
  .stats-card { grid-template-columns: repeat(3, 1fr); min-width: 0; }
}

@media (max-width: 720px) {
  .app-shell { padding: 14px; }
  .hero, .board-panel, .panel { border-radius: 20px; }
  .hero { padding: 20px; }
  .stats-card { grid-template-columns: 1fr; }
  .board-topbar { flex-direction: column; align-items: stretch; }
  .actions { width: 100%; }
  .actions .btn { flex: 1; }
  .middle-row { width: auto; }
  .control-btn { width: 68px; height: 68px; }
}


body {
  overflow-x: hidden;
}

.app-shell {
  max-width: 1240px;
  padding: 28px 24px 36px;
}

.hero {
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -80px -80px auto;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(110,231,183,0.16), rgba(110,231,183,0));
  pointer-events: none;
}

.subtitle {
  max-width: 560px;
  line-height: 1.7;
}

.board-panel {
  position: relative;
  overflow: hidden;
  padding: 22px;
}

.board-stage {
  position: relative;
}

.board-glow {
  position: absolute;
  width: 280px;
  height: 280px;
  border-radius: 999px;
  filter: blur(48px);
  opacity: 0.22;
  pointer-events: none;
}

.board-glow-a {
  background: rgba(96, 165, 250, 0.45);
  top: -140px;
  left: -100px;
}

.board-glow-b {
  background: rgba(110, 231, 183, 0.35);
  right: -120px;
  bottom: 40px;
}

.board-topbar {
  position: relative;
  z-index: 1;
}

.board-wrap {
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.06), 0 18px 40px rgba(0,0,0,0.28);
}

.board-hint {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.board-hint span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--muted);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--line);
}

.sidebar {
  align-content: start;
}

.panel {
  background: linear-gradient(180deg, rgba(12,22,36,0.88), rgba(8,16,28,0.92));
}

.info-panel ul li + li {
  margin-top: 6px;
}

.controls-panel {
  position: sticky;
  top: 24px;
}

.control-btn {
  transition: transform .15s ease, background .2s ease, border-color .2s ease;
}

.control-btn:hover {
  transform: translateY(-2px);
  border-color: rgba(110, 231, 183, 0.32);
}

@media (max-width: 980px) {
  .controls-panel {
    position: static;
  }

  .board-hint {
    justify-content: center;
  }
}

@media (max-width: 720px) {
  .app-shell { padding: 14px 14px 28px; }
  .board-panel { padding: 16px; }
  .board-hint span { width: 100%; justify-content: center; }
}