:root {
  --ember: #ff6a3d;
  --slag: #1a1c1e;
  --ash: #8b9098;
  --spark: #ffc857;
  --concrete: #2e3136;
}

* { box-sizing: border-box; }
html, body {
  margin: 0; height: 100%;
  background: var(--slag);
  color: #f2f2f2;
  font-family: "IBM Plex Sans", system-ui, sans-serif;
  overflow: hidden;
}
.hidden { display: none !important; }
.screen {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 24px;
}
.backdrop {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 20% 80%, rgba(255,106,61,.25), transparent 45%),
    linear-gradient(180deg, #121316 0%, #1a1c1e 50%, #241814 100%);
  z-index: 0;
}
.hero, .screen > *:not(.backdrop):not(canvas) { position: relative; z-index: 1; text-align: center; }
.eyebrow { letter-spacing: .3em; color: var(--spark); font-size: 12px; margin: 0 0 8px; }
h1 {
  font-family: Syne, sans-serif;
  font-size: clamp(56px, 12vw, 110px);
  line-height: .9; margin: 0;
  color: var(--ember);
  text-shadow: 0 0 40px rgba(255,106,61,.35);
}
h2 {
  font-family: Syne, sans-serif;
  font-size: clamp(28px, 6vw, 48px);
  color: var(--ember); margin: 0 0 12px;
}
.tag { color: var(--ash); max-width: 520px; margin: 8px auto 20px; }
.ember-text { color: var(--ember); font-size: 28px; font-weight: 700; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.btn {
  border: 0; border-radius: 4px; padding: 14px 22px;
  font-weight: 700; letter-spacing: .04em; cursor: pointer;
  color: white; min-width: 160px;
}
.btn.ember { background: var(--ember); }
.btn.slag { background: var(--concrete); }
.btn.spark { background: var(--spark); color: #1a1c1e; }
.btn:active { transform: scale(.98); }
.hint { color: var(--ash); font-size: 13px; margin-top: 18px; }
.arch-row { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 18px; }
.arch-row .btn.active { outline: 2px solid var(--spark); }
.preview {
  width: min(240px, 60vw); height: min(240px, 60vw);
  object-fit: cover; border: 3px solid var(--ember);
  margin: 16px auto; display: block; background: #111;
}
#fight { padding: 0; justify-content: flex-start; }
#stage {
  width: 100%; height: min(62vh, 720px);
  background: #121316; display: block;
}
.hud {
  width: 100%; display: grid;
  grid-template-columns: 1fr 80px 1fr;
  gap: 12px; align-items: center;
  padding: 10px 16px; background: rgba(0,0,0,.55);
}
.bar-wrap { display: flex; flex-direction: column; gap: 4px; }
.bar-wrap.right { align-items: end; }
.bar { height: 14px; width: 100%; max-width: 420px; background: #333; border-radius: 2px; overflow: hidden; position: relative; }
.bar::after {
  content: ""; position: absolute; inset: 0; width: var(--fill, 100%);
  background: var(--ember);
}
.bar.meter::after { background: var(--spark); height: 8px; top: auto; }
.bar.meter { height: 8px; }
.timer { font-family: Syne, sans-serif; font-size: 32px; text-align: center; }
.controls {
  display: flex; justify-content: space-between;
  width: 100%; padding: 12px 16px 20px;
}
.pad { display: grid; grid-template-columns: repeat(2, 64px); gap: 8px; }
.pad button {
  width: 64px; height: 64px; border: 0; border-radius: 8px;
  background: var(--concrete); color: white; font-size: 18px; font-weight: 700;
}
.pad button.ember { background: var(--ember); }
.pad button.spark { background: var(--spark); color: #111; }
.keys { margin: 0 0 10px; }
@media (min-width: 900px) {
  .pad button { width: 72px; height: 72px; }
}