:root {
  --bg-dark: #03040a;
  --bg-gradient: radial-gradient(circle at center, #0a0b16 0%, #020205 100%);
  --panel-bg: rgba(12, 14, 25, 0.65);
  --panel-border: rgba(255, 255, 255, 0.08);
  --text-primary: #f0f2f8;
  --text-secondary: #9ea4b0;
  --accent: #d4a373;
  --accent-glow: rgba(212, 163, 115, 0.4);
  --glass-blur: blur(16px);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body, #app { height: 100%; width: 100%; }

body { 
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

#app {
  display: flex;
  height: 100vh;
  position: relative;
}

canvas#scene {
  flex: 1;
  display: block;
  background: var(--bg-gradient);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

#navbar {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 60px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 24px;
  background: rgba(8, 10, 18, 0.4);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  z-index: 100;
}

.nav-brand {
  font-weight: 700;
  letter-spacing: 2px;
  font-size: 14px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-subtitle {
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 1px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 100%;
}

.nav-status {
  font-size: 13px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-right: 20px;
}
.nav-status span {
  font-weight: 600;
  color: var(--accent);
  padding: 4px 10px;
  border-radius: 6px;
  background: rgba(212, 163, 115, 0.1);
  border: 1px solid rgba(212, 163, 115, 0.2);
  margin-left: 8px;
}

.nav-item {
  position: relative;
  display: flex;
  align-items: center;
  height: 100%;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  cursor: pointer;
  padding: 0 10px;
  transition: color 0.2s;
}

.nav-item:hover {
  color: var(--accent);
}

.dropdown {
  position: absolute;
  top: 60px;
  right: 0;
  background: rgba(12, 14, 25, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0 0 12px 12px;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
  cursor: default;
}

.nav-item:hover .dropdown,
.nav-item.active .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.instructions-dropdown {
  width: 320px;
}

.preview {
  width: 200px;
  aspect-ratio: 4/3;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(0, 0, 0, 0.8);
  position: relative;
  margin-bottom: 12px;
}

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

.preview::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  box-shadow: inset 0 0 20px rgba(0,0,0,0.5);
  pointer-events: none;
}

.state {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

#gestureIndicator {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--panel-border);
}

#gestureIndicator span {
  font-weight: 600;
  color: var(--accent);
  text-shadow: 0 0 10px var(--accent-glow);
  background: rgba(212, 163, 115, 0.1);
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid rgba(212, 163, 115, 0.2);
}

.toggles {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

label {
  display: flex;
  align-items: center;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  cursor: pointer;
  user-select: none;
}

label input[type="checkbox"] {
  appearance: none;
  width: 20px;
  height: 20px;
  border: 1px solid var(--panel-border);
  border-radius: 5px;
  margin-right: 12px;
  background: rgba(0, 0, 0, 0.3);
  position: relative;
  cursor: pointer;
  transition: all 0.2s;
}

label input[type="checkbox"]:checked {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
}

label input[type="checkbox"]:checked::after {
  content: '✓';
  position: absolute;
  color: #000;
  font-size: 14px;
  font-weight: 900;
  left: 3px;
  top: -1px;
}

.instructions {
  max-height: calc(100vh - 400px);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.instructions::-webkit-scrollbar {
  width: 4px;
}
.instructions::-webkit-scrollbar-thumb {
  background: var(--panel-border);
  border-radius: 4px;
}

.panel-header h3 {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.gesture-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.gesture-list li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px;
  background: rgba(255, 255, 255, 0.02);
  border-radius: 10px;
  border: 1px solid transparent;
  transition: border-color 0.2s;
}

.gesture-list li:hover {
  border-color: rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
}

.gesture-icon {
  font-size: 22px;
  background: rgba(0, 0, 0, 0.3);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  border: 1px solid var(--panel-border);
}

.gesture-desc strong {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  display: block;
}

.gesture-desc span {
  font-size: 12px;
  color: var(--text-secondary);
}

.shortcuts {
  margin-top: 6px;
  padding-top: 16px;
  border-top: 1px solid var(--panel-border);
}

.shortcuts p {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.shortcut-item {
  display: flex;
  align-items: center;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

kbd {
  font-family: 'Roboto Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  padding: 4px 8px;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 2px 0 rgba(0, 0, 0, 0.2);
  margin-right: 12px;
  min-width: 28px;
  text-align: center;
}

.panel.footer {
  margin-top: auto;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.branding {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text-primary);
}

.footer small {
  font-size: 11px;
  line-height: 1.5;
  color: var(--text-secondary);
}

@media (max-width: 768px) {
  .nav-brand { font-size: 11px; }
  .nav-subtitle { display: none; }
  .nav-status { margin-right: 10px; font-size: 11px; }
  .nav-item { font-size: 11px; }
  .dropdown { right: -100px; }
}