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

:root {
  --bg: #0a0a0a;
  --fg: #e8e8e8;
  --dim: #555;
  --accent: #00ff88;
  --err: #ff4444;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'Courier New', monospace;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* ── Lobby ─────────────────────────────────────────── */
#lobby {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  user-select: none;
}

h1 {
  font-size: clamp(3rem, 10vw, 6rem);
  font-weight: 900;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--fg);
}

.subtitle {
  margin-top: -1.5rem;
  font-size: 0.85rem;
  letter-spacing: 0.4em;
  color: var(--dim);
  text-transform: uppercase;
}

#lobby-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  width: 100%;
  max-width: 280px;
}

/* secondary/dim action button */
.dim-btn {
  background: transparent !important;
  border-color: var(--dim) !important;
  color: var(--dim) !important;
}
.dim-btn:hover {
  background: var(--dim) !important;
  color: var(--bg) !important;
}

button {
  background: transparent;
  border: 1px solid var(--fg);
  color: var(--fg);
  font-family: inherit;
  font-size: 0.95rem;
  letter-spacing: 0.15em;
  padding: 0.65rem 1.5rem;
  cursor: pointer;
  text-transform: uppercase;
  transition: background 0.15s, color 0.15s;
  width: 100%;
}

button:hover {
  background: var(--fg);
  color: var(--bg);
}

.separator {
  display: flex;
  align-items: center;
  width: 100%;
  gap: 0.75rem;
  color: var(--dim);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
}
.separator::before, .separator::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--dim);
}

.join-row {
  display: flex;
  gap: 0.5rem;
  width: 100%;
}

.join-row input {
  flex: 1;
  min-width: 0;
}

.join-row button {
  width: auto;
  flex-shrink: 0;
  padding: 0.65rem 1rem;
}

input {
  background: transparent;
  border: 1px solid var(--dim);
  color: var(--fg);
  font-family: inherit;
  font-size: 1rem;
  letter-spacing: 0.2em;
  padding: 0.65rem 0.75rem;
  text-transform: uppercase;
  width: 100%;
  outline: none;
  transition: border-color 0.15s;
}

input:focus { border-color: var(--fg); }
input::placeholder { color: var(--dim); letter-spacing: 0.15em; }

/* ── Waiting ────────────────────────────────────────── */
#waiting {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  text-align: center;
}

#waiting-msg {
  color: var(--dim);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
}

#code-display {
  font-size: 2.5rem;
  font-weight: 900;
  letter-spacing: 0.5em;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 0.5rem 1.5rem;
}

.error {
  color: var(--err);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-align: center;
}

/* ── Game ───────────────────────────────────────────── */
#game-wrap {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

/* ── In-game overlays ───────────────────────────────── */
.game-overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: calc(100% - 2rem); /* exclude HUD */
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  background: rgba(10,10,10,0.88);
}

.overlay-title {
  font-size: 1.3rem;
  font-weight: 900;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fg);
}

.overlay-score {
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: 0.3em;
  color: var(--fg);
}

/* score option buttons */
.setting-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--dim);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
}

.score-opts {
  display: flex;
  gap: 0.4rem;
}

.score-opt {
  width: auto !important;
  padding: 0.4rem 0.75rem !important;
  font-size: 0.9rem !important;
  border-color: var(--dim) !important;
  color: var(--dim) !important;
}

.score-opt.active {
  border-color: var(--accent) !important;
  color: var(--accent) !important;
}

.score-opt:hover {
  background: var(--dim) !important;
  color: var(--bg) !important;
}

.rejoin-code-line {
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--dim);
}

.accent { color: var(--accent); }

canvas {
  display: block;
  max-width: min(800px, 98vw);
  max-height: min(500px, calc(98vh - 3rem));
  width: 100%;
  aspect-ratio: 8 / 5;
  image-rendering: pixelated;
  touch-action: none;   /* prevent scroll/zoom while dragging */
  user-select: none;
}

#hud {
  width: 100%;
  max-width: min(800px, 98vw);
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--dim);
}

#conn-label { color: var(--accent); }

/* ── QR code ────────────────────────────────────────── */
#qr-canvas {
  margin-top: 0.5rem;
  image-rendering: pixelated;
}

/* ── Scan overlay ───────────────────────────────────── */
#scan-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  z-index: 10;
}

#scan-video {
  width: min(400px, 90vw);
  aspect-ratio: 1;
  object-fit: cover;
  border: 1px solid var(--dim);
}

.scan-hint {
  color: var(--dim);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* ── Version ────────────────────────────────────────── */
#version {
  position: fixed;
  bottom: 0.6rem;
  right: 0.75rem;
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--dim);
  pointer-events: none;
  user-select: none;
}

/* ── Debug overlay ──────────────────────────────────── */
#debug {
  position: fixed;
  top: 0.6rem;
  left: 0.75rem;
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--dim);
  background: rgba(10,10,10,0.85);
  padding: 0.5rem 0.75rem;
  line-height: 1.7;
  pointer-events: none;
  white-space: pre;
}

/* ── Utility ────────────────────────────────────────── */
.hidden { display: none !important; }

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}
.blink { animation: blink 1s infinite; }