/* ── Reset & Variables ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --charcoal: #1a1814;
  --portal-blue: #4fc3f7;
  --portal-violet: #7c4dff;
  --portal-gold: #ffd54f;
}

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  background: #000;
}

/* ── Film grain overlay ── */
.noise {
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px;
}

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: #000;
  padding:
    env(safe-area-inset-top, 0px)
    env(safe-area-inset-right, 0px)
    env(safe-area-inset-bottom, 0px)
    env(safe-area-inset-left, 0px);
}

.hero-stage {
  position: relative;
  aspect-ratio: var(--hero-aspect-w) / var(--hero-aspect-h);
  width: min(
    100%,
    calc(
      (100dvh - env(safe-area-inset-top, 0px) - env(safe-area-inset-bottom, 0px))
      * var(--hero-aspect-w) / var(--hero-aspect-h)
    )
  );
  max-height: calc(100dvh - env(safe-area-inset-top, 0px) - env(safe-area-inset-bottom, 0px));
  flex-shrink: 0;
}

.hero-background {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
  user-select: none;
  pointer-events: none;
  z-index: 2;

  -webkit-mask-image: radial-gradient(
    calc(var(--portal-inner-size) * 0.5)
      calc(var(--portal-inner-size) * 0.5 * var(--hero-aspect-w) / var(--hero-aspect-h))
      at var(--portal-inner-x) var(--portal-inner-y),
    transparent 99.6%,
    #000 100%
  );
  mask-image: radial-gradient(
    calc(var(--portal-inner-size) * 0.5)
      calc(var(--portal-inner-size) * 0.5 * var(--hero-aspect-w) / var(--hero-aspect-h))
      at var(--portal-inner-x) var(--portal-inner-y),
    transparent 99.6%,
    #000 100%
  );
}

.portal-inner {
  position: absolute;
  left: var(--portal-inner-x);
  top: var(--portal-inner-y);
  width: var(--portal-inner-size);
  aspect-ratio: 1;
  transform: translate3d(-50%, -50%, 0);
  border-radius: 50%;
  overflow: hidden;
  overflow: clip;
  isolation: isolate;
  contain: paint;
  clip-path: circle(50%);
  -webkit-mask-image: radial-gradient(circle closest-side, #000 99.6%, transparent 100%);
  mask-image: radial-gradient(circle closest-side, #000 99.6%, transparent 100%);
  pointer-events: none;
  z-index: 1;
}

.portal-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  border: 0;
  border-radius: 50%;
  clip-path: circle(50%);
  background: transparent;
  pointer-events: none;
  -webkit-appearance: none;
  appearance: none;
}

.portal-video.debug {
  outline: 2px solid red;
  opacity: 0.75;
}

.portal-video::-webkit-media-controls,
.portal-video::-webkit-media-controls-enclosure {
  display: none !important;
}

.portal-open {
  position: absolute;
  left: var(--portal-inner-x);
  top: var(--portal-inner-y);
  width: calc(var(--portal-inner-size) * 2.2);
  height: calc(var(--portal-inner-size) * 2.2);
  transform: translate(-50%, -50%);
  border: none;
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  z-index: 3;
}

.portal-open:focus-visible {
  outline: 2px solid rgba(216, 210, 194, 0.5);
  outline-offset: 4px;
}

.hero-stage {
  --home-unlock-x: 67.4%;
  --home-unlock-y: 93.6%;
  --home-unlock-w: 26%;
}

.home-unlock {
  position: absolute;
  left: var(--home-unlock-x);
  top: var(--home-unlock-y);
  width: var(--home-unlock-w);
  transform: translate(-50%, 0);
  z-index: 5;
  margin: 0;
}

.home-unlock[hidden] {
  display: none !important;
}

.home-unlock input {
  display: block;
  width: 100%;
  min-height: 1.4em;
  padding: 0.15em 0.2em 0.2em;
  border: none;
  border-bottom: 1px solid rgba(216, 210, 194, 0.78);
  background: transparent;
  color: #d8d2c2;
  font-family: "Special Elite", "Courier New", Courier, monospace;
  font-size: clamp(0.72rem, 2.1vw, 1rem);
  letter-spacing: 0.14em;
  text-align: center;
  outline: none;
  caret-color: #d8d2c2;
}

.home-unlock input:focus {
  border-bottom-color: #e8e2d4;
}

@media (hover: none) and (pointer: coarse) {
  .portal-open {
    width: max(calc(var(--portal-inner-size) * 2.8), 72px);
    height: max(calc(var(--portal-inner-size) * 2.8), 72px);
  }

  .game-trigger {
    z-index: 4;
  }
}

.home-player-shell {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  background: #111;
  padding:
    env(safe-area-inset-top, 0px)
    env(safe-area-inset-right, 0px)
    env(safe-area-inset-bottom, 0px)
    env(safe-area-inset-left, 0px);
}

.home-player-shell[hidden] {
  display: none !important;
}

.home-player-frame {
  width: 100%;
  height: 100%;
  border: 0;
  background: #111;
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  .portal-video {
    display: none;
  }

  .portal-inner::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: radial-gradient(circle at 45% 40%,
      var(--portal-gold) 0%,
      var(--portal-blue) 45%,
      var(--portal-violet) 80%,
      #0a1628 100%
    );
  }
}

/* ── Portal debug mode (?portal-debug) ── */
.portal-debug-panel {
  position: fixed;
  bottom: 1rem;
  right: 1rem;
  z-index: 10000;
  width: min(18rem, calc(100vw - 2rem));
  padding: 1rem;
  font-family: system-ui, sans-serif;
  font-size: 0.7rem;
  color: #e8e0d0;
  background: rgba(26, 24, 20, 0.92);
  border: 1px solid rgba(79, 195, 247, 0.4);
  border-radius: 0.5rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.portal-debug-panel h2 {
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--portal-blue);
  margin-bottom: 0.75rem;
}

.portal-debug-panel label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 0.65rem;
}

.portal-debug-panel output {
  font-size: 0.65rem;
  color: #c4b59a;
}

.portal-debug-panel input[type='range'] {
  width: 100%;
  accent-color: var(--portal-blue);
}

.portal-debug-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.portal-debug-actions button {
  flex: 1;
  padding: 0.4rem 0.5rem;
  font-family: inherit;
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #e8e0d0;
  background: rgba(79, 195, 247, 0.15);
  border: 1px solid rgba(79, 195, 247, 0.35);
  border-radius: 0.25rem;
  cursor: pointer;
}

.portal-debug-actions button:hover {
  background: rgba(79, 195, 247, 0.3);
}