:root {
  color-scheme: dark;
  --bg: #05080c;
  --panel: rgba(9, 18, 26, 0.82);
  --panel-strong: rgba(8, 16, 22, 0.92);
  --line: rgba(89, 242, 211, 0.24);
  --accent: #63f7d1;
  --accent-soft: rgba(99, 247, 209, 0.16);
  --text: #eefcf8;
  --muted: #93b6bc;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at top, rgba(74, 207, 184, 0.16), transparent 42%),
    linear-gradient(180deg, #081019 0%, #030608 100%);
  color: var(--text);
  font-family: "SF Pro Display", "Segoe UI", sans-serif;
}

body {
  min-height: 100vh;
  touch-action: none;
  overflow: hidden;
}

body.orientation-blocked {
  overflow: hidden;
}

.shell {
  min-height: 100vh;
  padding: 1rem;
}

.shell__stage {
  min-height: calc(100vh - 2rem);
}

.game-frame,
#canvas,
#status {
  inset: 0;
}

.game-frame {
  position: relative;
  height: calc(100vh - 2rem);
  min-height: 20rem;
  border: 1px solid var(--line);
  border-radius: 1.5rem;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(11, 26, 34, 0.9), rgba(4, 10, 14, 0.96)),
    radial-gradient(circle at center, rgba(99, 247, 209, 0.08), transparent 55%);
  box-shadow: 0 1.5rem 4rem rgba(0, 0, 0, 0.38);
}

.eyebrow {
  margin: 0 0 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
  color: var(--accent);
}

h2,
p {
  margin: 0;
}

#canvas {
  position: absolute;
  width: 100%;
  height: 100%;
  display: block;
  border: 0;
  background: #000;
}

#canvas:focus {
  outline: none;
}

#status,
.rotate-gate__card {
  width: min(36rem, calc(100vw - 3rem));
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  background: var(--panel);
  backdrop-filter: blur(14px);
  box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.34);
  position: absolute;
}

#status {
  display: grid;
  place-items: center;
  padding: 1.5rem;
  margin: auto;
  z-index: 2;
  text-align: center;
  --status-progress: 0%;
}

.status-shell {
  display: grid;
  justify-items: center;
  gap: 1rem;
  width: min(24rem, 100%);
}

.status-shell__model {
  position: relative;
  display: grid;
  place-items: center;
  width: min(20rem, calc(100vw - 6rem));
  aspect-ratio: 1;
  border-radius: 1.65rem;
  background:
    radial-gradient(circle, rgba(111, 216, 255, 0.12), transparent 42%),
    radial-gradient(circle at center, rgba(99, 247, 209, 0.12), rgba(4, 10, 14, 0.2) 65%, transparent 76%);
  overflow: hidden;
  isolation: isolate;
  box-shadow:
    inset 0 0 2rem rgba(99, 247, 209, 0.1),
    0 0 3rem rgba(0, 0, 0, 0.3);
}

.status-shell__model::before,
.status-shell__model::after {
  content: "";
  position: absolute;
  inset: 0.8rem;
  border-radius: 1.25rem;
  border: 1px solid rgba(99, 247, 209, 0.18);
  pointer-events: none;
}

.status-shell__model::after {
  inset: 18%;
  border-color: rgba(111, 216, 255, 0.22);
  border-style: dashed;
  border-width: 1px;
  animation: loader-spin 12s linear infinite;
}

.status-shell__fallback-grid {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, transparent 0%, rgba(111, 216, 255, 0.08) 50%, transparent 100%),
    repeating-linear-gradient(
      0deg,
      transparent 0 12px,
      rgba(99, 247, 209, 0.08) 12px 13px
    );
  opacity: 0.35;
  transform: translateY(0);
  animation: loader-grid 8s linear infinite;
  pointer-events: none;
}

.status-shell__fallback-ring {
  position: absolute;
  inset: 16%;
  border: 1px solid rgba(99, 247, 209, 0.24);
  border-radius: 50%;
  box-shadow: inset 0 0 1.2rem rgba(99, 247, 209, 0.1);
  pointer-events: none;
}

.status-shell__fallback-ring--outer {
  animation: loader-spin 16s linear infinite;
}

.status-shell__fallback-ring--inner {
  inset: 28%;
  border-color: rgba(111, 216, 255, 0.22);
  border-style: dashed;
  animation: loader-spin-reverse 10s linear infinite;
}

.status-shell__fallback-glow {
  position: absolute;
  inset: 18%;
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(99, 247, 209, 0.48) 0%, rgba(111, 216, 255, 0.22) 18%, rgba(7, 16, 22, 0) 62%);
  filter: blur(24px);
  opacity: 0.72;
  transform: scale(0.92);
  animation: loader-glow 2.8s ease-in-out infinite;
  pointer-events: none;
}

.status-shell__fallback-core {
  position: absolute;
  width: 24%;
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(246, 255, 249, 0.95) 0%, rgba(99, 247, 209, 0.78) 34%, rgba(4, 10, 14, 0) 74%);
  filter: blur(2px);
  box-shadow:
    0 0 2rem rgba(99, 247, 209, 0.45),
    0 0 4rem rgba(111, 216, 255, 0.24);
  animation: loader-core 2.2s ease-in-out infinite;
  pointer-events: none;
}

.status-shell__meter {
  width: min(20rem, calc(100% - 1rem));
  height: 0.6rem;
  padding: 0.08rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(99, 247, 209, 0.18);
  box-shadow: inset 0 0 1rem rgba(0, 0, 0, 0.22);
}

.status-shell__meter-fill {
  width: var(--status-progress);
  height: 100%;
  border-radius: inherit;
  background:
    linear-gradient(90deg, var(--accent) 0%, #6fd8ff 55%, #f6fff9 100%);
  box-shadow:
    0 0 1.4rem rgba(111, 216, 255, 0.26),
    inset 0 0 0.65rem rgba(255, 255, 255, 0.35);
  transition: width 180ms ease;
}

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

#status-notice {
  max-width: 26rem;
  color: #ffd4c1;
  line-height: 1.55;
  text-wrap: balance;
}

#status[data-mode="progress"] #status-notice {
  display: none;
}

#status[data-mode="notice"] .status-shell__meter,
#status[data-mode="notice"] .status-shell__fallback-core,
#status[data-mode="notice"] .status-shell__fallback-glow,
#status[data-mode="notice"] .status-shell__fallback-grid,
#status[data-mode="notice"] .status-shell__fallback-ring {
  display: none;
}

#status[data-mode="notice"] .status-shell__model::before,
#status[data-mode="notice"] .status-shell__model::after {
  border-color: rgba(255, 155, 108, 0.2);
}

.shell__toolbar {
  position: absolute;
  left: 50%;
  bottom: 1rem;
  z-index: 3;
  transform: translateX(-50%);
  transition: opacity 180ms ease, transform 220ms ease;
}

.shell__toolbar--hidden {
  opacity: 0;
  transform: translate(-50%, calc(100% + 1rem));
  pointer-events: none;
}

.shell__toolbar-pill {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem;
  border: 1px solid rgba(99, 247, 209, 0.22);
  border-radius: 999px;
  background: rgba(8, 16, 22, 0.78);
  backdrop-filter: blur(18px);
  box-shadow: 0 0.85rem 2rem rgba(0, 0, 0, 0.32);
}

code {
  font-family: "SFMono-Regular", "Menlo", monospace;
  color: var(--accent);
}

.shell__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(99, 247, 209, 0.38);
  border-radius: 999px;
  min-height: 2.55rem;
  padding: 0.72rem 1rem;
  color: var(--text);
  background: linear-gradient(180deg, rgba(99, 247, 209, 0.18), rgba(99, 247, 209, 0.08));
  font: inherit;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: transform 120ms ease, background 120ms ease;
  touch-action: manipulation;
}

.shell__button:hover {
  transform: translateY(-1px);
  background: linear-gradient(180deg, rgba(99, 247, 209, 0.26), rgba(99, 247, 209, 0.12));
}

.shell__button[aria-pressed="false"] {
  border-color: rgba(147, 182, 188, 0.28);
  color: var(--muted);
  background: rgba(12, 22, 30, 0.74);
}

.rotate-gate {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  background: rgba(3, 7, 10, 0.92);
  z-index: 100;
}

.rotate-gate__card {
  display: grid;
  gap: 0.85rem;
  text-align: center;
  background: var(--panel-strong);
}

.rotate-gate__card p:last-of-type {
  color: var(--muted);
  line-height: 1.5;
}

@keyframes loader-glow {
  0%,
  100% {
    opacity: 0.55;
    transform: scale(0.9);
  }

  50% {
    opacity: 0.92;
    transform: scale(1.02);
  }
}

@keyframes loader-core {
  0%,
  100% {
    transform: scale(0.92);
    opacity: 0.82;
  }

  50% {
    transform: scale(1.08);
    opacity: 1;
  }
}

@keyframes loader-grid {
  from {
    transform: translateY(0);
  }

  to {
    transform: translateY(13px);
  }
}

@keyframes loader-spin {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

@keyframes loader-spin-reverse {
  from {
    transform: rotate(360deg);
  }

  to {
    transform: rotate(0deg);
  }
}

@media (max-width: 800px) {
  .shell {
    padding: 0.75rem;
  }

  .game-frame {
    height: calc(100vh - 1.5rem);
    border-radius: 1rem;
  }

  #status,
  .rotate-gate__card {
    width: min(calc(100vw - 1.5rem), 30rem);
    padding: 1.15rem;
  }

  .status-shell__model {
    width: min(18rem, calc(100vw - 4rem));
  }

  .shell__toolbar {
    left: 0.75rem;
    right: 0.75rem;
    bottom: 0.75rem;
    transform: none;
  }

  .shell__toolbar--hidden {
    transform: translateY(calc(100% + 0.85rem));
  }

  .shell__toolbar-pill {
    width: 100%;
    justify-content: space-between;
  }

  .shell__button {
    flex: 1 1 auto;
    justify-content: center;
  }
}