:root {
  --bg: #060D1A;
  --panel: #0D192E;
  --panel-border: #1B325E;
  --ink: #EAF0F8;
  --ink-muted: #8AA0BD;
  --accent: #FF2A1B;
  --cyan: #00F0FF;
  --green: #00FF9D;
}

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

body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Manrope', sans-serif;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 16px;
}

.app-layout {
  display: flex;
  gap: 20px;
  max-width: 1160px;
  width: 100%;
}
@media (max-width: 960px) {
  .app-layout { flex-direction: column; }
}

.game-container {
  flex: 1;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}

.game-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}
.game-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--cyan);
}
.hud-stats {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  display: flex;
  gap: 14px;
  color: var(--ink-muted);
}
.hud-stats b { color: var(--ink); }
.tag-ground { color: var(--green) !important; }

#gameCanvas {
  background: #040812;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  width: 100%;
  height: auto;
  aspect-ratio: 760 / 440;
  display: block;
}

.controls-hint {
  margin-top: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.76rem;
  color: var(--ink-muted);
  text-align: center;
}

.sidebar {
  width: 320px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.sidebar h2 {
  font-size: 1.15rem;
  font-weight: 800;
}
.sidebar-sub {
  font-size: 0.82rem;
  color: var(--ink-muted);
  line-height: 1.4;
}

.param-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.param-label {
  display: flex;
  justify-content: space-between;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  font-weight: 700;
}
.param-label b { color: var(--cyan); }

input[type="range"] {
  width: 100%;
  accent-color: var(--cyan);
  cursor: pointer;
}

.preset-buttons {
  display: grid;
  gap: 6px;
  margin-top: 6px;
}
.preset-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--ink-muted);
  text-transform: uppercase;
  font-weight: 700;
}
.btn-preset {
  background: rgba(0, 240, 255, 0.06);
  border: 1px solid var(--panel-border);
  color: var(--ink);
  padding: 7px 12px;
  border-radius: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  cursor: pointer;
  text-align: left;
  transition: all 0.2s;
}
.btn-preset:hover {
  border-color: var(--cyan);
  background: rgba(0, 240, 255, 0.12);
  color: var(--cyan);
}

.ai-box {
  background: rgba(255, 42, 27, 0.08);
  border: 1px dashed var(--accent);
  padding: 10px 12px;
  border-radius: 6px;
  margin-top: auto;
}
.ai-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.74rem;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 4px;
}
.ai-box code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--ink);
  line-height: 1.35;
  display: block;
}

/* FULLSCREEN STYLES */
.btn-fullscreen {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  background: rgba(0, 240, 255, 0.1);
  color: var(--cyan);
  border: 1px solid rgba(0, 240, 255, 0.4);
  padding: 4px 10px;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all 0.15s ease;
  line-height: 1;
}

.btn-fullscreen:hover {
  background: var(--cyan);
  color: #060D1A;
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
}

.btn-fullscreen.is-active {
  background: rgba(255, 42, 27, 0.15);
  color: var(--accent);
  border-color: rgba(255, 42, 27, 0.5);
}

.btn-fullscreen.is-active:hover {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 0 10px rgba(255, 42, 27, 0.6);
}

.game-container:fullscreen,
.game-container:-webkit-full-screen,
.game-container.is-fullscreen {
  width: 100vw !important;
  height: 100vh !important;
  max-width: 100vw !important;
  max-height: 100vh !important;
  border-radius: 0 !important;
  border: none !important;
  padding: 14px 24px !important;
  box-sizing: border-box !important;
  background: #060D1A !important;
  display: flex !important;
  flex-direction: column !important;
  justify-content: space-between !important;
  align-items: center !important;
  gap: 10px !important;
  overflow: hidden !important;
  z-index: 99999 !important;
}

.game-container:fullscreen .game-header,
.game-container:-webkit-full-screen .game-header,
.game-container.is-fullscreen .game-header {
  width: 100%;
  max-width: 1100px;
}

.game-container:fullscreen #gameCanvas,
.game-container:-webkit-full-screen #gameCanvas,
.game-container.is-fullscreen #gameCanvas {
  flex: 1;
  max-width: 1100px;
  max-height: calc(100vh - 120px);
  width: auto;
  height: auto;
  aspect-ratio: 760 / 440;
  object-fit: contain;
}

.game-container:fullscreen .controls-hint,
.game-container:-webkit-full-screen .controls-hint,
.game-container.is-fullscreen .controls-hint {
  width: 100%;
  max-width: 1100px;
}