/* Iron Man–style HUD: neon cyan/red, glass, circular accents */
:root[data-theme='dark'] {
  --bg-deep: #050a12;
  --bg-panel: rgba(8, 24, 48, 0.55);
  --hud-cyan: #00e5ff;
  --hud-red: #ff3355;
  --hud-dim: rgba(0, 229, 255, 0.35);
  --text: #e8f4ff;
  --text-muted: rgba(200, 230, 255, 0.65);
  --glass-bg: rgba(12, 32, 56, 0.45);
  --glow: 0 0 12px rgba(0, 229, 255, 0.45), 0 0 28px rgba(0, 100, 180, 0.25);
  --glow-red: 0 0 10px rgba(255, 51, 85, 0.4);
}

:root[data-theme='light'] {
  --bg-deep: #e8eef5;
  --bg-panel: rgba(255, 255, 255, 0.65);
  --hud-cyan: #0088aa;
  --hud-red: #cc2244;
  --hud-dim: rgba(0, 100, 130, 0.4);
  --text: #0a1628;
  --text-muted: rgba(20, 40, 60, 0.7);
  --glass-bg: rgba(255, 255, 255, 0.55);
  --glow: 0 0 8px rgba(0, 120, 160, 0.35);
  --glow-red: 0 0 8px rgba(200, 40, 60, 0.35);
}

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

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: 'Rajdhani', system-ui, sans-serif;
  background-color: var(--bg-deep);
  background-image:
    radial-gradient(ellipse 120% 80% at 50% -10%, rgba(0, 180, 220, 0.18), transparent 45%),
    radial-gradient(ellipse 70% 50% at 100% 100%, rgba(255, 60, 90, 0.12), transparent 50%),
    radial-gradient(ellipse 50% 40% at 0% 50%, rgba(0, 140, 200, 0.08), transparent 45%),
    linear-gradient(180deg, #0a1520 0%, #050a12 55%, #020408 100%);
  background-attachment: fixed;
  color: var(--text);
  overflow-x: hidden;
}

.app {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--hud-dim);
  border-radius: 12px;
  box-shadow: var(--glow);
}

.hud-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 1rem;
  margin: 0.5rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.hud-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: 'Orbitron', sans-serif;
}

.hud-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--hud-cyan);
  box-shadow: var(--glow);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  50% {
    opacity: 0.65;
    box-shadow: 0 0 16px var(--hud-cyan);
  }
}

.hud-title {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.2em;
  color: var(--hud-cyan);
  text-shadow: var(--glow);
}

.hud-sub {
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  color: var(--text-muted);
}

.hud-status {
  display: flex;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.hud-metric {
  font-family: 'Orbitron', monospace;
  font-size: 0.75rem;
}

.hud-main {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr minmax(240px, 300px);
  gap: 0.5rem;
  padding: 0 0.5rem 0.5rem;
  min-height: 0;
}

@media (max-width: 900px) {
  .hud-main {
    grid-template-columns: 1fr;
  }
}

.camera-start-overlay {
  position: absolute;
  inset: 0;
  z-index: 8;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgba(5, 12, 24, 0.78);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.camera-start-overlay.is-hidden {
  display: none;
}

.camera-start-card {
  max-width: 22rem;
  padding: 1.25rem 1.35rem;
  text-align: center;
}

.camera-start-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.95rem;
  letter-spacing: 0.15em;
  color: var(--hud-cyan);
  margin: 0 0 0.65rem;
}

.camera-start-hint {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.45;
  margin: 0 0 1rem;
}

.camera-start-btn {
  font-size: 0.8rem;
  padding: 0.55rem 1.4rem;
  letter-spacing: 0.2em;
}

.camera-start-error {
  margin: 0.75rem 0 0;
  font-size: 0.8rem;
  color: var(--hud-red);
}

.canvas-wrap {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--hud-dim);
  min-height: 280px;
  background:
    radial-gradient(ellipse 100% 60% at 50% 0%, rgba(0, 200, 255, 0.14), transparent 50%),
    radial-gradient(ellipse 80% 50% at 100% 100%, rgba(255, 50, 80, 0.1), transparent 55%),
    linear-gradient(180deg, #0c1828 0%, #060d16 45%, #020408 100%);
}

#three-canvas {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 50vh;
  touch-action: none;
}

.hud-corner {
  position: absolute;
  padding: 0.5rem;
  z-index: 2;
}

.hud-corner-tl {
  top: 0.5rem;
  left: 0.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
}

.hud-corner-tr {
  top: 0.5rem;
  right: 0.5rem;
  max-width: min(200px, 42vw);
}

.circle-frame {
  border-radius: 999px;
  padding: 0.35rem 0.65rem;
}

.hud-btn {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  padding: 0.4rem 0.55rem;
  border-radius: 8px;
  border: 1px solid var(--hud-dim);
  background: rgba(0, 40, 60, 0.4);
  color: var(--hud-cyan);
  cursor: pointer;
  transition: background 0.2s, box-shadow 0.2s;
}

.hud-btn:hover {
  box-shadow: var(--glow);
}

.hud-btn.primary {
  border-color: var(--hud-red);
  color: var(--hud-red);
  box-shadow: var(--glow-red);
}

.hud-label {
  display: block;
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.webcam-stack {
  position: relative;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--hud-cyan);
  aspect-ratio: 4 / 3;
  max-height: 120px;
  box-shadow: var(--glow), inset 0 0 20px rgba(0, 200, 255, 0.15);
}

.webcam-stack::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    transparent 0,
    transparent 2px,
    rgba(0, 229, 255, 0.03) 2px,
    rgba(0, 229, 255, 0.03) 4px
  );
  mix-blend-mode: overlay;
}

.webcam-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transform: scaleX(-1);
}

.hand-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  transform: scaleX(-1);
}

.hud-check {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.35rem;
  font-size: 0.7rem;
  color: var(--text-muted);
  cursor: pointer;
}

.hud-messages {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  max-width: 90%;
  pointer-events: none;
  z-index: 3;
}

.holo-msg {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(0.7rem, 2.5vw, 0.95rem);
  letter-spacing: 0.08em;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  background: rgba(0, 30, 50, 0.65);
  border: 1px solid var(--hud-cyan);
  color: var(--hud-cyan);
  text-shadow: 0 0 8px rgba(0, 229, 255, 0.8);
  box-shadow: var(--glow);
  animation: holo-in 0.45s ease-out forwards;
  max-width: 100%;
  text-align: center;
}

@keyframes holo-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.holo-msg.fade-out {
  animation: holo-out 0.5s ease-in forwards;
}

@keyframes holo-out {
  to {
    opacity: 0;
    transform: translateY(-6px) scale(0.98);
  }
}

.hud-panel {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.panel-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  margin: 0;
  color: var(--hud-cyan);
  border-bottom: 1px solid var(--hud-dim);
  padding-bottom: 0.5rem;
}

.panel-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.hud-input {
  flex: 1;
  min-width: 120px;
  padding: 0.5rem 0.65rem;
  border-radius: 8px;
  border: 1px solid var(--hud-dim);
  background: rgba(0, 20, 40, 0.5);
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
}

.panel-hint {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.panel-hint.small {
  font-size: 0.75rem;
  line-height: 1.4;
}

.panel-shortcuts {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.panel-shortcuts kbd {
  display: inline-block;
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  border: 1px solid var(--hud-dim);
  background: rgba(0, 40, 60, 0.35);
  margin: 0 0.1rem;
}

.hud-footer {
  margin: 0 0.5rem 0.5rem;
  padding: 0.6rem 1rem;
}

.jarvis-line {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--hud-cyan);
}