:root {
  --yellow: #FCD42E;
  --yellow-soft: rgba(252, 212, 46, 0.78);
  --bg: #0E0E10;
  --bg-soft: rgba(20, 20, 24, 0.55);
  --fg: #f5f5f0;
  --fg-dim: rgba(245, 245, 240, 0.6);
  --ease: cubic-bezier(.22,.61,.36,1);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "ss01";
}

body {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  pointer-events: none;
}
header h1 {
  font-size: clamp(0.95rem, 1.4vw, 1.15rem);
  font-weight: 600;
  letter-spacing: 0.04em;
  margin: 0;
  text-transform: uppercase;
  color: var(--fg);
  mix-blend-mode: difference;
}
.brand { color: var(--yellow); }

main {
  flex: 1;
  display: grid;
  place-items: center;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  position: relative;
  z-index: 2;
}

/* ---- Video backdrop: fills the entire viewport, 'cover' style ---- */
.video-wrap {
  position: fixed;
  inset: 0;
  overflow: hidden;
  z-index: 0;
  background: #000;
}
.video-wrap #player,
.video-wrap iframe {
  position: absolute;
  top: 50%;
  left: 50%;
  /* Cover-fill the viewport with a 16:9 iframe by oversizing on the short axis. */
  width: max(100vw, calc(100vh * 16 / 9));
  height: max(100vh, calc(100vw * 9 / 16));
  transform: translate(-50%, -50%);
  border: 0;
  pointer-events: none; /* slider/controls receive interaction; video itself is decorative */
}

/* ---- Vignette to keep ring legible against bright frames ---- */
.vignette {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 50% 50%,
      rgba(0,0,0,0) 40%,
      rgba(0,0,0,0.45) 90%,
      rgba(0,0,0,0.7) 100%);
  transition: opacity 0.25s var(--ease);
}

/* ---- Stage: square overlay container, transparent ---- */
.stage {
  position: relative;
  width: min(100vw, 100vh);
  height: min(100vw, 100vh);
  max-width: 1400px;
  max-height: 1400px;
  isolation: isolate;
  background: transparent;
}

/* When overlay is hidden, fade visual layers while keeping one control button
   active so the same button can bring the overlay back. */
body.overlay-hidden .slider,
body.overlay-hidden .readout,
body.overlay-hidden .vignette,
body.overlay-hidden header,
body.overlay-hidden footer {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease);
}
body.overlay-hidden .controls {
  opacity: 1;
  pointer-events: auto;
  background: transparent;
  border-color: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
body.overlay-hidden .controls .ctrl:not(#toggle-overlay) {
  display: none;
}
body.overlay-hidden #toggle-overlay {
  pointer-events: auto;
}

/* ---- Slider (SVG) ---- */
.slider {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 3;
  outline: none;
  /* Layout-only; pointer events handled by individual SVG children */
  pointer-events: none;
}

/* SVG children */
.slider .track {
  fill: none;
  stroke: rgba(255, 255, 255, 0.18);
  stroke-width: 5;
  stroke-linecap: round;
  vector-effect: non-scaling-stroke;
}
.slider .progress {
  fill: none;
  stroke: var(--yellow);
  stroke-width: 5;
  stroke-linecap: round;
  vector-effect: non-scaling-stroke;
  transition: stroke-dashoffset 0.18s var(--ease);
}
.slider .tick {
  stroke: rgba(255, 255, 255, 0.35);
  stroke-width: 2;
  vector-effect: non-scaling-stroke;
}
.slider .tick.cardinal {
  stroke: var(--yellow);
  stroke-width: 3.5;
}
.slider .label {
  fill: var(--yellow);
  font-family: inherit;
  font-weight: 600;
  font-size: 36px;
  letter-spacing: 0.04em;
  text-anchor: middle;
  dominant-baseline: middle;
  user-select: none;
  pointer-events: none;
}
.slider .tick,
.slider .track,
.slider .progress {
  pointer-events: none;
}
.slider .hit {
  fill: none;
  stroke: transparent;
  stroke-width: 80;
  cursor: pointer;
  pointer-events: stroke;
}
.slider .thumb-hit {
  fill: transparent;
  cursor: grab;
  pointer-events: all;
}
.slider .thumb-hit:active { cursor: grabbing; }
.slider .thumb {
  fill: var(--yellow);
  filter: drop-shadow(0 4px 14px rgba(252, 212, 46, 0.45));
  transition: r 0.18s var(--ease), filter 0.18s var(--ease);
  pointer-events: none;
}
.slider .thumb-halo {
  fill: rgba(252, 212, 46, 0.18);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s var(--ease);
}
.slider.dragging .thumb,
.slider:focus-visible .thumb,
.slider .thumb-hit:hover ~ .thumb {
  filter: drop-shadow(0 6px 20px rgba(252, 212, 46, 0.7));
}
.slider:focus-visible .thumb-halo,
.slider.dragging .thumb-halo {
  opacity: 1;
}

/* ---- Center readout ---- */
.readout {
  position: absolute;
  z-index: 4;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  pointer-events: none;
  user-select: none;
  text-shadow: 0 2px 16px rgba(0,0,0,0.6);
}
.readout-time {
  font-size: clamp(2rem, 7vw, 5rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--yellow);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.readout-sub {
  margin-top: 0.5rem;
  font-size: clamp(0.7rem, 1vw, 0.85rem);
  text-transform: uppercase;
  letter-spacing: 0.32em;
  color: var(--fg-dim);
}

/* ---- Controls (bottom strip) ---- */
.controls {
  position: absolute;
  z-index: 5;
  left: 50%;
  bottom: clamp(1rem, 4vh, 3rem);
  transform: translateX(-50%);
  display: flex;
  gap: 0.5rem;
  align-items: center;
  padding: 0.4rem;
  background: var(--bg-soft);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 999px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0.55;
  transition: opacity 0.25s var(--ease);
}
.stage:hover .controls,
.stage:focus-within .controls {
  opacity: 1;
}
.ctrl {
  min-width: 44px;
  min-height: 44px;
  padding: 0.5rem 1rem;
  background: transparent;
  color: var(--fg);
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
  font-family: inherit;
}
.ctrl:hover,
.ctrl:focus-visible {
  background: rgba(252, 212, 46, 0.16);
  border-color: var(--yellow);
  color: var(--yellow);
  outline: none;
}
.ctrl:focus-visible {
  box-shadow: 0 0 0 3px rgba(252, 212, 46, 0.35);
}
.ctrl-unmute {
  background: rgba(252, 212, 46, 0.2);
  border-color: var(--yellow);
  color: var(--yellow);
}

/* Play/pause icon toggling */
.ctrl .ico-pause { display: none; }
.ctrl.is-playing .ico-play { display: none; }
.ctrl.is-playing .ico-pause { display: inline; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 10;
  padding: 0.6rem 1rem;
  text-align: center;
  color: var(--fg-dim);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  pointer-events: none;
  mix-blend-mode: difference;
}

/* ---- Mobile tweaks ---- */
@media (max-width: 600px) {
  .slider .label { font-size: 44px; }
  header { padding: 0.7rem 0.9rem; }
  footer { font-size: 0.65rem; padding: 0.4rem 0.6rem; }
  .controls { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition-duration: 0.01ms !important; }
}