:root {
  --bg: #070912;
  --panel: rgba(13, 18, 36, 0.92);
  --line: rgba(28, 36, 64, 0.85);
  --cyan: #00e5ff;
  --magenta: #ff2fb8;
  --amber: #ffd60a;
  --green: #2dff9a;
  --violet: #7b5cff;
  --text: #dbe4ff;
  --muted: #7d8ab3;
  --accent: #3b82f6;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 15% 85%, rgba(45, 255, 154, 0.12) 0%, transparent 42%),
    radial-gradient(ellipse at 85% 15%, rgba(123, 92, 255, 0.14) 0%, transparent 40%),
    radial-gradient(ellipse at 50% 0%, rgba(0, 229, 255, 0.1) 0%, transparent 45%),
    radial-gradient(ellipse at 70% 70%, rgba(255, 47, 184, 0.08) 0%, transparent 38%),
    linear-gradient(180deg, #0a1020 0%, var(--bg) 55%, #04060f 100%);
  font-family: "Vazirmatn", Tahoma, system-ui, sans-serif;
  color: var(--text);
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

#sceneContainer {
  position: fixed;
  inset: 0;
  cursor: grab;
}

#sceneContainer:active {
  cursor: grabbing;
}

.panel {
  position: fixed;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 18px;
  backdrop-filter: blur(8px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
}

.is-hidden {
  display: none !important;
}

#hudTop {
  top: 16px;
  right: 16px;
  left: 16px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  pointer-events: none;
}

#hudTop .panel {
  pointer-events: auto;
}

#statsPanel {
  min-width: 150px;
}

#statsPanel .row {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 4px;
}

#statsPanel .row b {
  color: var(--cyan);
  font-size: 16px;
  font-variant-numeric: tabular-nums;
}

#statsPanel h1 {
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--text);
  margin-bottom: 8px;
}

#nextPanel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  min-width: 120px;
}

#nextPanel h1 {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.06em;
}

#nextCanvas {
  width: 90px;
  height: 90px;
  border-radius: 10px;
  background: rgba(5, 7, 15, 0.85);
  border: 1px solid var(--line);
}

#controlsPanel {
  bottom: 16px;
  right: 16px;
  left: 16px;
  display: flex;
  justify-content: center;
  gap: 22px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--muted);
  pointer-events: none;
}

#controlsPanel .panel {
  pointer-events: auto;
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  justify-content: center;
}

#controlsPanel span b {
  color: var(--text);
  background: rgba(22, 28, 54, 0.9);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 2px 7px;
  margin-inline-start: 6px;
  font-family: monospace;
}

#menuOverlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse at 20% 80%, rgba(45, 255, 154, 0.1) 0%, transparent 45%),
    radial-gradient(ellipse at 80% 20%, rgba(123, 92, 255, 0.12) 0%, transparent 42%),
    rgba(4, 6, 15, 0.88);
  z-index: 25;
}

.menu-box {
  text-align: center;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 28px 32px;
  min-width: min(92vw, 320px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
}

.menu-box h1 {
  font-size: clamp(22px, 5vw, 28px);
  margin-bottom: 18px;
  background: linear-gradient(135deg, var(--cyan), var(--magenta));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.menu-label {
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 12px;
}

.level-grid {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 22px;
}

.level-btn {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(20, 26, 52, 0.9);
  color: var(--text);
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}

.level-btn:hover {
  border-color: var(--cyan);
}

.level-btn.active {
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.25), rgba(123, 92, 255, 0.25));
  border-color: var(--cyan);
  color: var(--cyan);
}

.menu-start {
  background: linear-gradient(135deg, var(--cyan), var(--accent));
  border: none;
  color: #04121a;
  font-weight: 700;
  padding: 11px 32px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 15px;
  font-family: inherit;
  letter-spacing: 0.04em;
}

.menu-start:hover {
  filter: brightness(1.08);
}

#overlay {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(4, 6, 15, 0.88);
  z-index: 20;
}

#overlay .box {
  text-align: center;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px 28px;
  min-width: min(90vw, 300px);
}

#overlay h2 {
  font-size: 26px;
  color: var(--magenta);
  margin-bottom: 10px;
}

#overlay p {
  color: var(--muted);
  margin-bottom: 18px;
}

#overlay button,
#restartBtn {
  background: linear-gradient(135deg, var(--cyan), var(--accent));
  border: none;
  color: #04121a;
  font-weight: 700;
  padding: 10px 26px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 14px;
  font-family: inherit;
}

#overlay button:hover,
#restartBtn:hover {
  filter: brightness(1.1);
}

#touchControls {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  display: none;
  justify-content: space-between;
  align-items: flex-end;
  padding: 10px 12px calc(10px + env(safe-area-inset-bottom));
  pointer-events: none;
  z-index: 15;
  gap: 8px;
}

#touchControls .cluster {
  pointer-events: auto;
  display: grid;
  gap: 6px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 8px;
  backdrop-filter: blur(8px);
}

#moveCluster {
  grid-template-columns: repeat(3, 44px);
  grid-template-rows: repeat(2, 44px);
}

#rotateCluster {
  grid-template-columns: repeat(2, 44px);
  grid-template-rows: repeat(3, 44px);
}

#actionCluster {
  grid-template-columns: 60px;
  grid-template-rows: auto auto;
  justify-items: center;
}

.tbtn {
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(20, 26, 52, 0.95);
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--cyan);
  font-size: 16px;
  font-weight: 700;
  font-family: inherit;
  touch-action: manipulation;
}

.tbtn:active {
  background: rgba(31, 42, 82, 0.95);
}

.tbtn.drop {
  background: linear-gradient(135deg, var(--magenta), #a300a3);
  color: #fff;
  font-size: 12px;
  width: 60px;
  height: 44px;
}

.tbtn.soft {
  background: rgba(20, 26, 52, 0.95);
  color: var(--amber);
  font-size: 11px;
  width: 60px;
  height: 34px;
}

.tbtn.zoom {
  width: 27px;
  height: 34px;
  font-size: 18px;
}

.zoom-row {
  display: flex;
  gap: 6px;
  margin-top: 6px;
}

.clusterLabel {
  grid-column: 1 / -1;
  text-align: center;
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.06em;
}

@media (hover: none) and (pointer: coarse) {
  #touchControls {
    display: flex;
  }

  #controlsPanel {
    display: none !important;
  }
}

@media (max-width: 640px) {
  #hudTop {
    top: 10px;
    right: 10px;
    left: 10px;
    gap: 10px;
  }

  #statsPanel,
  #nextPanel {
    padding: 10px 12px;
  }

  #statsPanel h1 {
    font-size: 12px;
  }

  #statsPanel .row {
    font-size: 11px;
  }

  #statsPanel .row b {
    font-size: 14px;
  }

  #nextCanvas {
    width: 72px;
    height: 72px;
  }
}