:root {
  --bg-1: #05081a;
  --bg-2: #0b1530;
  --neon-cyan: #24e6ff;
  --neon-green: #7cff9f;
  --neon-amber: #ffd66e;
  --neon-red: #ff638c;
  --panel: rgba(11, 17, 38, 0.78);
  --panel-border: rgba(36, 230, 255, 0.35);
  --text-main: #e9f1ff;
  --text-soft: #a7bddf;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  background: radial-gradient(circle at 15% 20%, #102a59, transparent 40%),
              radial-gradient(circle at 85% 75%, #183a22, transparent 30%),
              linear-gradient(135deg, var(--bg-1), var(--bg-2));
  color: var(--text-main);
  font-family: "Segoe UI", "Trebuchet MS", sans-serif;
  overflow-x: hidden;
  overflow-y: auto;
  padding: 18px 0 24px;
  gap: 12px;
}
.bg-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(36, 230, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(36, 230, 255, 0.08) 1px, transparent 1px);
  background-size: 30px 30px;
  mask-image: radial-gradient(circle at center, black 30%, transparent 90%);
}

.game-shell {
  width: min(95vw, 1040px);
  padding: 18px;
  border-radius: 20px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  backdrop-filter: blur(8px);
  box-shadow: 0 0 28px rgba(36, 230, 255, 0.15), inset 0 0 40px rgba(0, 0, 0, 0.35);
  position: relative;
  z-index: 1;
}

.snake-ad-zone {
  width: min(95vw, 1040px);
  padding: 12px;
  border-radius: 14px;
  border: 1px solid rgba(36, 230, 255, 0.3);
  background: rgba(7, 12, 28, 0.78);
  box-shadow: 0 0 22px rgba(36, 230, 255, 0.15);
  position: relative;
  z-index: 1;
}

.snake-ad-zone ins.adsbygoogle {
  width: 100%;
  min-height: 90px;
}
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 18px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.title-wrap {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

h1 {
  margin: 0;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  font-weight: 800;
}

h1 span {
  color: var(--neon-cyan);
  text-shadow: 0 0 15px rgba(36, 230, 255, 0.7);
}

.quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.quick-links a,
.mini-link {
  border: 1px solid rgba(36, 230, 255, 0.42);
  border-radius: 8px;
  padding: 5px 9px;
  background: rgba(4, 11, 28, 0.75);
  color: #d8eeff;
  text-decoration: none;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.4px;
}

.mini-link {
  cursor: pointer;
}

.hud {
  display: grid;
  grid-template-columns: repeat(4, minmax(100px, 1fr));
  gap: 10px;
  flex: 1;
}

.hud-item {
  background: rgba(7, 10, 25, 0.75);
  border: 1px solid rgba(124, 255, 159, 0.25);
  border-radius: 10px;
  padding: 8px 10px;
}

.hud-item label {
  display: block;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-soft);
}

.hud-item strong {
  font-size: 18px;
}

.board-wrap {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 14px;
  align-items: start;
}

canvas {
  width: min(90vw, 624px);
  height: min(90vw, 624px);
  max-width: 624px;
  max-height: 624px;
  background:
    radial-gradient(circle at 15% 20%, rgba(36, 230, 255, 0.12), transparent 50%),
    linear-gradient(160deg, #080f26, #040816 68%);
  border: 1px solid rgba(124, 255, 159, 0.28);
  border-radius: 16px;
  box-shadow: 0 0 24px rgba(36, 230, 255, 0.2), inset 0 0 30px rgba(0, 0, 0, 0.45);
}

.legend {
  background: rgba(6, 10, 24, 0.78);
  border: 1px solid rgba(255, 214, 110, 0.35);
  border-radius: 12px;
  padding: 12px;
}

.legend h2 {
  margin: 0 0 8px;
  font-size: 1rem;
  text-transform: uppercase;
  color: var(--neon-amber);
}

.legend p {
  margin: 8px 0;
  color: var(--text-soft);
  line-height: 1.4;
}

.modifier-panel,
.player-panel {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(124, 255, 159, 0.22);
}

.modifier-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.modifier-empty {
  margin: 0;
  font-size: 12px;
  color: #8ea6cb;
}

.modifier-chip,
.modifier-card {
  --modifier-edge: rgba(36, 230, 255, 0.38);
  --modifier-glow: rgba(36, 230, 255, 0.12);
  --modifier-badge: rgba(36, 230, 255, 0.2);
  border: 1px solid var(--modifier-edge);
  box-shadow: inset 0 0 18px var(--modifier-glow);
}

.modifier-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 9px;
  border-radius: 10px;
  background: rgba(4, 11, 28, 0.84);
  cursor: help;
}

.modifier-badge {
  min-width: 38px;
  padding: 4px 6px;
  border-radius: 8px;
  background: var(--modifier-badge);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.8px;
  text-align: center;
  color: #ecf7ff;
}

.modifier-label {
  font-size: 12px;
  font-weight: 700;
  color: #dcecff;
}

.modifier-chip[data-modifier-key="speed"],
.modifier-card[data-modifier-key="speed"] {
  --modifier-edge: rgba(36, 230, 255, 0.45);
  --modifier-glow: rgba(36, 230, 255, 0.15);
  --modifier-badge: rgba(36, 230, 255, 0.24);
}

.modifier-chip[data-modifier-key="walls"],
.modifier-card[data-modifier-key="walls"] {
  --modifier-edge: rgba(255, 214, 110, 0.42);
  --modifier-glow: rgba(255, 214, 110, 0.13);
  --modifier-badge: rgba(255, 214, 110, 0.22);
}

.modifier-chip[data-modifier-key="poison"],
.modifier-card[data-modifier-key="poison"] {
  --modifier-edge: rgba(255, 99, 140, 0.42);
  --modifier-glow: rgba(255, 99, 140, 0.13);
  --modifier-badge: rgba(255, 99, 140, 0.22);
}

.modifier-chip[data-modifier-key="drones"],
.modifier-card[data-modifier-key="drones"] {
  --modifier-edge: rgba(255, 164, 110, 0.42);
  --modifier-glow: rgba(255, 164, 110, 0.13);
  --modifier-badge: rgba(255, 164, 110, 0.22);
}

.modifier-chip[data-modifier-key="portal"],
.modifier-card[data-modifier-key="portal"] {
  --modifier-edge: rgba(184, 140, 255, 0.42);
  --modifier-glow: rgba(184, 140, 255, 0.14);
  --modifier-badge: rgba(184, 140, 255, 0.22);
}

.modifier-chip[data-modifier-key="timer"],
.modifier-card[data-modifier-key="timer"] {
  --modifier-edge: rgba(255, 138, 138, 0.42);
  --modifier-glow: rgba(255, 138, 138, 0.13);
  --modifier-badge: rgba(255, 138, 138, 0.2);
}

.modifier-chip[data-modifier-key="wind"],
.modifier-card[data-modifier-key="wind"] {
  --modifier-edge: rgba(123, 255, 173, 0.42);
  --modifier-glow: rgba(123, 255, 173, 0.13);
  --modifier-badge: rgba(123, 255, 173, 0.21);
}

.modifier-chip[data-modifier-key="reverse"],
.modifier-card[data-modifier-key="reverse"] {
  --modifier-edge: rgba(255, 150, 220, 0.42);
  --modifier-glow: rgba(255, 150, 220, 0.13);
  --modifier-badge: rgba(255, 150, 220, 0.21);
}

.modifier-chip[data-modifier-key="objective"],
.modifier-card[data-modifier-key="objective"] {
  --modifier-edge: rgba(164, 255, 190, 0.42);
  --modifier-glow: rgba(164, 255, 190, 0.13);
  --modifier-badge: rgba(164, 255, 190, 0.21);
}

.player-panel label {
  display: block;
  margin-top: 10px;
  margin-bottom: 4px;
  font-size: 12px;
  color: #cce1ff;
}

.player-panel .hint {
  font-size: 12px;
  color: #8ea6cb;
}

.inline-controls {
  display: flex;
  gap: 8px;
  align-items: center;
}

select {
  width: 100%;
  min-height: 34px;
  border-radius: 8px;
  border: 1px solid rgba(36, 230, 255, 0.45);
  background: rgba(4, 11, 28, 0.8);
  color: #e4f0ff;
  padding: 6px 8px;
}

.mini-btn {
  margin-top: 0;
  margin-right: 0;
  min-height: 34px;
  padding: 7px 10px;
  font-size: 12px;
  letter-spacing: 0.4px;
  white-space: nowrap;
}

kbd {
  border: 1px solid rgba(36, 230, 255, 0.45);
  border-radius: 6px;
  padding: 3px 6px;
  background: rgba(36, 230, 255, 0.1);
  margin-right: 4px;
  font-size: 12px;
}

.overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(2, 4, 11, 0.72);
  backdrop-filter: blur(4px);
  z-index: 10;
}

.panel {
  width: min(92vw, 560px);
  padding: 24px;
  border-radius: 18px;
  border: 1px solid rgba(124, 255, 159, 0.38);
  background: rgba(7, 12, 28, 0.95);
  box-shadow: 0 0 32px rgba(36, 230, 255, 0.22);
  text-align: left;
}

.panel h2 {
  margin-top: 0;
  margin-bottom: 14px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.panel p {
  color: #c8d8f5;
  line-height: 1.5;
}

.overlay-feature {
  margin-top: 14px;
}

.modifier-card {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 14px;
  align-items: center;
  padding: 12px;
  border-radius: 14px;
  background: rgba(4, 11, 28, 0.88);
}

.modifier-card .modifier-badge {
  min-width: 0;
  min-height: 72px;
  display: grid;
  place-items: center;
  font-size: 20px;
  letter-spacing: 1px;
}

.modifier-card strong {
  display: block;
  margin-bottom: 5px;
  color: #eff7ff;
  letter-spacing: 0.5px;
}

.modifier-card p {
  margin: 0;
  color: #c8d8f5;
}

button {
  margin-top: 14px;
  margin-right: 10px;
  border: none;
  border-radius: 10px;
  padding: 10px 18px;
  font-weight: 700;
  letter-spacing: 0.7px;
  text-transform: uppercase;
  cursor: pointer;
  background: linear-gradient(120deg, var(--neon-green), #30ffcf);
  color: #072113;
  box-shadow: 0 0 16px rgba(124, 255, 159, 0.35);
}

button.secondary {
  background: transparent;
  color: #ffd0da;
  border: 1px solid rgba(255, 99, 140, 0.45);
  box-shadow: none;
}

.hidden {
  display: none;
}

@media (max-width: 930px) {
  .snake-ad-zone {
    width: min(90vw, 624px);
  }

  .board-wrap {
    grid-template-columns: 1fr;
  }

  .legend {
    width: min(90vw, 624px);
  }

  .hud {
    grid-template-columns: repeat(2, minmax(110px, 1fr));
  }
}