:root {
  --bg-deep: #070b16;
  --bg-navy: #0c1528;
  --bg-break: #1a2a3f;
  --gold: #d4af37;
  --gold-soft: #e8c96a;
  --gold-dim: rgba(212, 175, 55, 0.35);
  --text: #f3e7c4;
  --text-muted: rgba(243, 231, 196, 0.55);
  --ring-size: min(72vw, 72vh, 420px);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html,
body {
  height: 100%;
  margin: 0;
}

body {
  font-family: "Outfit", sans-serif;
  color: var(--text);
  background: var(--bg-deep);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background-color 1.2s var(--ease);
}

body.is-break {
  --bg-deep: #121c2e;
  --bg-navy: #1e3148;
}

.ambient {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 35%, rgba(30, 58, 95, 0.45), transparent 70%),
    radial-gradient(ellipse 50% 40% at 80% 80%, rgba(201, 162, 39, 0.06), transparent 55%),
    radial-gradient(ellipse 100% 100% at 50% 100%, var(--bg-navy), var(--bg-deep));
  transition: background 1.2s var(--ease);
  pointer-events: none;
  z-index: 0;
}

body.is-break .ambient {
  background:
    radial-gradient(ellipse 90% 70% at 50% 40%, rgba(120, 160, 200, 0.22), transparent 65%),
    radial-gradient(ellipse 50% 40% at 20% 80%, rgba(201, 162, 39, 0.05), transparent 55%),
    radial-gradient(ellipse 100% 100% at 50% 100%, #243a55, #152033);
}

.grain {
  position: fixed;
  inset: 0;
  opacity: 0.045;
  pointer-events: none;
  z-index: 1;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

.stage {
  position: relative;
  z-index: 2;
  min-height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.25rem 2.5rem;
  gap: 2.5rem;
}

.brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  animation: fade-up 1s var(--ease) both;
}

.brand-mark {
  width: 42px;
  height: 42px;
  color: var(--gold);
  filter: drop-shadow(0 0 12px rgba(212, 175, 55, 0.25));
}

.brand-text {
  text-align: center;
}

.brand-text h1 {
  margin: 0;
  font-family: "Syncopate", sans-serif;
  font-weight: 700;
  font-size: clamp(0.95rem, 2.2vw, 1.15rem);
  letter-spacing: 0.35em;
  color: var(--gold-soft);
}

.brand-text p {
  margin: 0.45rem 0 0;
  font-size: 0.68rem;
  font-weight: 300;
  letter-spacing: 0.28em;
  color: var(--text-muted);
}

.timer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  animation: fade-up 1.1s var(--ease) 0.12s both;
}

.ring-wrap {
  position: relative;
  width: var(--ring-size);
  height: var(--ring-size);
}

.ring-wrap.is-strike {
  animation: cradle-strike 0.55s var(--ease);
}

.ring-wrap.is-strike .ring {
  animation: cradle-strike-glow 0.55s var(--ease);
}

.ring-wrap.is-strike .ring-progress {
  animation: cradle-strike-arc 0.55s var(--ease);
}

.ring-wrap.is-strike .time {
  animation: cradle-strike-face 0.55s var(--ease);
}

.ring {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
  filter: drop-shadow(0 0 28px rgba(212, 175, 55, 0.12));
  transform-origin: 50% 50%;
}

.ring-track {
  fill: none;
  stroke: rgba(212, 175, 55, 0.14);
  stroke-width: 1.5;
}

.ticks line {
  stroke: rgba(212, 175, 55, 0.28);
  stroke-width: 1;
  stroke-linecap: round;
}

.ring-progress {
  fill: none;
  stroke: url(#gold);
  stroke-width: 3.5;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.35s linear;
}

.face {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  text-align: center;
  gap: 0.35rem;
}

.time {
  font-family: "Outfit", sans-serif;
  font-weight: 200;
  font-size: clamp(3.8rem, 14vw, 5.6rem);
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--gold-soft);
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 40px rgba(212, 175, 55, 0.2);
  transition: transform 0.4s var(--ease);
}

body.is-running .time {
  animation: pulse-soft 2.4s ease-in-out infinite;
}

.mode {
  font-family: "Syncopate", sans-serif;
  font-size: clamp(0.7rem, 1.8vw, 0.85rem);
  font-weight: 400;
  letter-spacing: 0.45em;
  color: var(--text-muted);
  margin-left: 0.45em;
  transition: color 0.6s var(--ease);
}

body.is-break .mode {
  color: rgba(180, 210, 235, 0.75);
}

.controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  opacity: 0.55;
  transition: opacity 0.35s var(--ease);
}

.controls:hover,
.controls:focus-within,
body:not(.is-running) .controls {
  opacity: 1;
}

.btn {
  appearance: none;
  border: 1px solid var(--gold-dim);
  background: transparent;
  color: var(--text-muted);
  font-family: "Syncopate", sans-serif;
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  padding: 0.85rem 1.25rem;
  cursor: pointer;
  transition: color 0.25s, border-color 0.25s, background 0.25s, transform 0.25s var(--ease);
}

.btn:hover {
  color: var(--gold-soft);
  border-color: var(--gold);
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  color: var(--bg-deep);
  background: linear-gradient(135deg, #f0d78c, #c9a227 50%, #a8861f);
  border-color: transparent;
  min-width: 8.5rem;
  box-shadow: 0 8px 28px rgba(201, 162, 39, 0.22);
}

.btn-primary:hover {
  color: var(--bg-deep);
  filter: brightness(1.06);
}

.hint {
  margin: 0;
  font-size: 0.65rem;
  font-weight: 300;
  letter-spacing: 0.16em;
  color: rgba(243, 231, 196, 0.28);
  text-transform: uppercase;
  opacity: 0;
  transition: opacity 0.4s;
}

body:not(.is-running) .hint,
.controls:hover ~ .hint {
  opacity: 1;
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse-soft {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.88;
  }
}

/* Newton's cradle strike — short ring impulse at session end */
@keyframes cradle-strike {
  0% {
    transform: scale(1);
  }
  18% {
    transform: scale(1.045);
  }
  38% {
    transform: scale(0.985);
  }
  58% {
    transform: scale(1.02);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes cradle-strike-glow {
  0% {
    filter: drop-shadow(0 0 28px rgba(212, 175, 55, 0.12));
  }
  20% {
    filter: drop-shadow(0 0 42px rgba(240, 215, 140, 0.75))
      drop-shadow(0 0 18px rgba(212, 175, 55, 0.55));
  }
  100% {
    filter: drop-shadow(0 0 28px rgba(212, 175, 55, 0.12));
  }
}

@keyframes cradle-strike-arc {
  0% {
    stroke-width: 3.5;
    opacity: 1;
  }
  18% {
    stroke-width: 6.5;
    opacity: 1;
  }
  100% {
    stroke-width: 3.5;
    opacity: 1;
  }
}

@keyframes cradle-strike-face {
  0%,
  100% {
    transform: scale(1);
    text-shadow: 0 0 40px rgba(212, 175, 55, 0.2);
  }
  18% {
    transform: scale(1.03);
    text-shadow: 0 0 56px rgba(240, 215, 140, 0.55);
  }
}

@media (max-width: 520px) {
  .controls {
    flex-wrap: wrap;
    justify-content: center;
  }

  .hint {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .ring-wrap.is-strike,
  .ring-wrap.is-strike .ring,
  .ring-wrap.is-strike .ring-progress,
  .ring-wrap.is-strike .time {
    animation: none !important;
  }
}