:root {
  --bg: #0f0f10;
  --text: #f2f2f3;
  --muted: #b1b3ba;
  --accent: #d9d9dd;
  --danger: #ff8a8a;
  --glass-stroke: rgba(255, 255, 255, 0.24);
  --glass-fill-top: rgba(255, 255, 255, 0.16);
  --glass-fill-bottom: rgba(255, 255, 255, 0.07);
}

* {
  box-sizing: border-box;
}

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

body {
  overflow: hidden;
  font-family: "Space Grotesk", "Trebuchet MS", sans-serif;
  color: var(--text);
  background: var(--bg);
}

.app-shell {
  position: relative;
  width: 100vw;
  height: 100vh;
}

#inputVideo {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

#idleBackgroundCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 3;
}

#outputCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transform: scaleX(-1);
  z-index: 2;
}

#monkeyOverlay {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 4;
}

.monkey-sticker {
  position: absolute;
  opacity: 0;
  user-select: none;
  object-fit: cover;
  transform: translate(0, 0) rotate(var(--monkey-rotation, 0deg)) scale(0.92);
  transform-origin: center;
  filter: drop-shadow(0 6px 14px rgba(0, 0, 0, 0.45));
  animation:
    monkey-fade-in 180ms ease-out forwards,
    monkey-float 5.4s ease-in-out infinite alternate;
}

.monkey-sticker.is-exiting {
  animation: monkey-exit 180ms ease-in forwards;
}

@keyframes monkey-fade-in {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes monkey-float {
  0% {
    transform: translate(0, 0) rotate(var(--monkey-rotation, 0deg)) scale(0.92);
  }

  100% {
    transform: translate(var(--monkey-float-x, 0px), var(--monkey-float-y, 0px)) rotate(var(--monkey-rotation, 0deg)) scale(1);
  }
}

@keyframes monkey-exit {
  from {
    opacity: 1;
    transform: translate(0, 0) rotate(var(--monkey-rotation, 0deg)) scale(1);
  }

  to {
    opacity: 0;
    transform: translate(0, 0) rotate(var(--monkey-rotation, 0deg)) scale(0.35);
  }
}

.hud {
  position: fixed;
  top: clamp(1rem, 3vw, 2rem);
  left: clamp(1rem, 3vw, 2rem);
  max-width: min(30rem, 85vw);
  padding: 0.95rem 1.1rem;
  border: 1px solid var(--glass-stroke);
  border-radius: 0.9rem;
  background: linear-gradient(155deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.03));
  backdrop-filter: url("#container-glass") blur(18px) saturate(1.28);
  -webkit-backdrop-filter: blur(18px) saturate(1.28);
  box-shadow:
    0 0 8px rgba(0, 0, 0, 0.03),
    0 2px 6px rgba(0, 0, 0, 0.08),
    inset 3px 3px 0.5px -3.5px rgba(255, 255, 255, 0.12),
    inset -3px -3px 0.5px -3.5px rgba(255, 255, 255, 0.66),
    inset 1px 1px 1px -0.5px rgba(255, 255, 255, 0.38),
    inset -1px -1px 1px -0.5px rgba(255, 255, 255, 0.34),
    inset 0 0 6px 6px rgba(255, 255, 255, 0.08),
    inset 0 0 2px 2px rgba(255, 255, 255, 0.04),
    0 0 12px rgba(0, 0, 0, 0.2);
  isolation: isolate;
  overflow: hidden;
  z-index: 5;
}

.hud::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(95% 80% at 50% 0%, rgba(255, 255, 255, 0.26), transparent 60%);
  opacity: 0.62;
}

.hud > * {
  position: relative;
  z-index: 1;
}

.hud h1 {
  margin: 0;
  font-size: clamp(1.05rem, 2.2vw, 1.6rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

#statusText {
  margin: 0.42rem 0 0;
  font-size: clamp(0.94rem, 1.35vw, 1.05rem);
  color: var(--accent);
  font-weight: 500;
}

#statusText.error {
  color: var(--danger);
}

.hint {
  margin: 0.34rem 0 0;
  font-size: 0.88rem;
  line-height: 1.35;
  color: var(--muted);
}

.liquid-button {
  position: fixed;
  left: 50%;
  bottom: clamp(1.2rem, 4vh, 2.2rem);
  transform: translateX(-50%);
  border: 1px solid var(--glass-stroke);
  border-radius: 999px;
  padding: 0.75rem 1.4rem;
  font-family: inherit;
  font-size: clamp(0.95rem, 1.35vw, 1.05rem);
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: #f5f6f9;
  background: linear-gradient(165deg, var(--glass-fill-top), var(--glass-fill-bottom));
  backdrop-filter: url("#container-glass") blur(14px) saturate(1.25);
  -webkit-backdrop-filter: blur(14px) saturate(1.25);
  box-shadow:
    0 0 8px rgba(0, 0, 0, 0.03),
    0 2px 6px rgba(0, 0, 0, 0.08),
    inset 3px 3px 0.5px -3px rgba(255, 255, 255, 0.12),
    inset -3px -3px 0.5px -3px rgba(255, 255, 255, 0.82),
    inset 1px 1px 1px -0.5px rgba(255, 255, 255, 0.46),
    inset -1px -1px 1px -0.5px rgba(255, 255, 255, 0.4),
    inset 0 0 6px 6px rgba(255, 255, 255, 0.08),
    inset 0 0 2px 2px rgba(255, 255, 255, 0.05),
    0 0 12px rgba(0, 0, 0, 0.18);
  cursor: pointer;
  transition: transform 200ms ease, filter 200ms ease, box-shadow 200ms ease;
  isolation: isolate;
  z-index: 6;
}

.liquid-button::before {
  content: "";
  position: absolute;
  inset: 1px;
  pointer-events: none;
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.28), rgba(255, 255, 255, 0.04));
  z-index: -1;
}

.start-button {
  --glass-fill-top: rgba(255, 255, 255, 0.18);
  --glass-fill-bottom: rgba(255, 255, 255, 0.08);
}

.exit-button {
  --glass-fill-top: rgba(255, 124, 124, 0.42);
  --glass-fill-bottom: rgba(125, 28, 28, 0.3);
}

.corner-toggle-button {
  left: auto;
  right: clamp(1rem, 3vw, 2rem);
  top: clamp(1rem, 3vw, 2rem);
  bottom: auto;
  transform: translateY(0);
  padding: 0.62rem 1rem;
  font-size: clamp(0.76rem, 1.1vw, 0.9rem);
  letter-spacing: 0.06em;
  z-index: 7;
}

.corner-toggle-button.on {
  --glass-fill-top: rgba(160, 224, 255, 0.28);
  --glass-fill-bottom: rgba(74, 126, 174, 0.2);
}

.corner-toggle-button.off {
  --glass-fill-top: rgba(255, 128, 128, 0.36);
  --glass-fill-bottom: rgba(88, 28, 28, 0.3);
}

.corner-toggle-button:hover:not(:disabled) {
  transform: translateY(-2px);
}

.corner-toggle-button:active:not(:disabled) {
  transform: translateY(0);
}

.liquid-button:not(.corner-toggle-button):hover:not(:disabled) {
  transform: translateX(-50%) translateY(-2px);
  filter: brightness(1.06);
  box-shadow:
    0 0 10px rgba(0, 0, 0, 0.08),
    0 4px 14px rgba(0, 0, 0, 0.16),
    inset 0 0 8px rgba(255, 255, 255, 0.18),
    0 0 16px rgba(255, 255, 255, 0.1);
}

.liquid-button:not(.corner-toggle-button):active:not(:disabled) {
  transform: translateX(-50%) translateY(0);
  filter: brightness(0.95);
}

.liquid-button:disabled {
  cursor: progress;
  opacity: 0.72;
}

.hidden {
  display: none !important;
}

.glass-filter-defs {
  position: absolute;
  width: 0;
  height: 0;
  pointer-events: none;
}

@media (max-width: 700px) {
  .hud {
    max-width: 92vw;
  }

  .corner-toggle-button {
    right: 0.7rem;
    top: 0.7rem;
    padding: 0.58rem 0.9rem;
  }
}