/* Neon Smash — styling. Dark arcade cabinet vibe, neon glow, fully responsive. */
:root {
  --bg: #05060f;
  --panel: rgba(10, 14, 30, 0.82);
  --cyan: #2ff3ff;
  --pink: #ff3bd4;
  --violet: #8a5bff;
  --lime: #b6ff3b;
  --text: #d8e6ff;
  --muted: #6b7aa8;
  font-family: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background:
    radial-gradient(1200px 800px at 50% -10%, #131a3a 0%, var(--bg) 60%),
    var(--bg);
  color: var(--text);
  overflow: hidden;
  -webkit-user-select: none;
  user-select: none;
  touch-action: none;
}

#stage {
  position: relative;
  width: min(100vw, 75vh);          /* keep the 3:4 play area */
  aspect-ratio: 3 / 4;
  margin: max(0px, calc((100vh - 100vw * 4 / 3) / 2)) auto 0;
  max-height: 100vh;
}
@media (min-aspect-ratio: 3/4) {
  #stage { width: 75vh; }
}

#game {
  width: 100%;
  height: 100%;
  display: block;
  border-radius: 14px;
  background: #070a18;
  box-shadow:
    0 0 0 1px rgba(47, 243, 255, 0.18),
    0 0 60px rgba(47, 243, 255, 0.10),
    0 20px 80px rgba(0, 0, 0, 0.6);
  image-rendering: optimizeQuality;
}

/* ---------- HUD ---------- */
.hud {
  position: absolute;
  inset: 0 0 auto 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  font-size: clamp(12px, 2.4vmin, 18px);
  letter-spacing: 1px;
  pointer-events: none;
}
.hud-item { display: flex; flex-direction: column; gap: 2px; }
.hud-label { color: var(--muted); font-size: 0.62em; letter-spacing: 2px; }
#hud-score { color: var(--cyan); text-shadow: 0 0 10px var(--cyan); font-size: 1.3em; }
.hud-combo { align-items: center; }
#hud-combo {
  color: var(--lime);
  text-shadow: 0 0 12px var(--lime);
  font-size: 1.4em;
  transition: transform 0.08s ease;
}
.hud-lives { align-items: flex-end; }
#hud-lives { color: var(--pink); text-shadow: 0 0 10px var(--pink); font-size: 1.2em; letter-spacing: 2px; }

.fps {
  position: absolute;
  right: 8px;
  bottom: 8px;
  font-size: 11px;
  color: var(--muted);
  background: rgba(0,0,0,0.35);
  padding: 2px 6px;
  border-radius: 6px;
  pointer-events: none;
}

/* ---------- Overlays ---------- */
.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  text-align: center;
  padding: 24px;
  background: radial-gradient(120% 120% at 50% 30%, rgba(8,10,24,0.35), rgba(5,6,15,0.9));
  backdrop-filter: blur(3px);
  border-radius: 14px;
}
.hidden { display: none !important; }

.logo {
  margin: 0;
  font-size: clamp(34px, 11vmin, 78px);
  font-weight: 800;
  letter-spacing: 3px;
  line-height: 0.95;
  color: var(--cyan);
  text-shadow: 0 0 18px var(--cyan), 0 0 42px rgba(47,243,255,0.5);
}
.logo span { display: block; color: var(--pink); text-shadow: 0 0 18px var(--pink), 0 0 42px rgba(255,59,212,0.5); }
.neon { color: var(--cyan); text-shadow: 0 0 16px var(--cyan); letter-spacing: 2px; margin: 0; font-size: clamp(26px, 7vmin, 48px); }
.tagline { color: var(--muted); margin: 0; font-size: clamp(11px, 2.4vmin, 15px); }
.how { color: var(--muted); font-size: clamp(10px, 2vmin, 13px); line-height: 1.7; }
.how b { color: var(--text); }
.best { color: var(--lime); text-shadow: 0 0 10px var(--lime); min-height: 1em; margin: 0; font-size: clamp(11px,2.3vmin,15px); }
.demo-tag { position: absolute; bottom: 14px; color: var(--muted); font-size: 10px; letter-spacing: 1px; }
.demo-tag code { color: var(--violet); }

.btn {
  appearance: none;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text);
  background: rgba(138, 91, 255, 0.10);
  border: 1px solid rgba(138, 91, 255, 0.55);
  padding: 12px 26px;
  border-radius: 10px;
  transition: transform 0.06s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn:hover { transform: translateY(-1px); background: rgba(138, 91, 255, 0.2); }
.btn:active { transform: translateY(1px); }
.btn-primary {
  color: #04111a;
  background: var(--cyan);
  border-color: var(--cyan);
  box-shadow: 0 0 24px rgba(47, 243, 255, 0.45);
}
.btn-primary:hover { background: #6df8ff; }

.final { font-size: clamp(16px, 4vmin, 24px); color: var(--muted); margin: 0; }
.final span { color: var(--cyan); text-shadow: 0 0 12px var(--cyan); font-size: 1.4em; }
.enter-label { color: var(--muted); letter-spacing: 2px; font-size: clamp(10px,2vmin,13px); margin: 4px 0 0; }

.initials { display: flex; gap: 10px; justify-content: center; }
.initials input {
  width: clamp(40px, 11vmin, 60px);
  height: clamp(48px, 13vmin, 70px);
  text-align: center;
  font: inherit;
  font-size: clamp(24px, 7vmin, 40px);
  font-weight: 800;
  text-transform: uppercase;
  color: var(--lime);
  background: rgba(182, 255, 59, 0.06);
  border: 2px solid rgba(182, 255, 59, 0.4);
  border-radius: 10px;
  caret-color: var(--lime);
  outline: none;
}
.initials input:focus { border-color: var(--lime); box-shadow: 0 0 16px rgba(182,255,59,0.4); }

.net-msg { min-height: 1.2em; font-size: clamp(10px, 2.2vmin, 13px); color: var(--pink); margin: 0; }
.net-msg.ok { color: var(--lime); }

.board { width: min(90%, 360px); }
.board-head { color: var(--muted); letter-spacing: 3px; font-size: 12px; margin-bottom: 6px; }
.board-list { list-style: none; margin: 0; padding: 0; max-height: 30vh; overflow-y: auto; }
.board-list li {
  display: grid;
  grid-template-columns: 28px 1fr auto;
  gap: 10px;
  padding: 5px 10px;
  font-size: clamp(12px, 2.6vmin, 16px);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.board-list li .rank { color: var(--muted); }
.board-list li .who { color: var(--text); letter-spacing: 2px; }
.board-list li .pts { color: var(--cyan); }
.board-list li.me { background: rgba(47,243,255,0.10); border-radius: 6px; }
.board-list li.me .who { color: var(--cyan); text-shadow: 0 0 8px var(--cyan); }
.board-empty { color: var(--muted); text-align: center; }

@media (max-width: 420px) {
  .demo-tag { font-size: 9px; }
}