:root {
  /* Refined Soft Pastel Color Palette */
  --bg: #EAE6DE;
  --surface: rgba(248, 246, 242, 0.94);
  --surface-solid: #F5F2EB;
  --surface-hover: #ECE6DC;
  --surface-active: #E4DDD1;
  --border: #DDD6CA;
  --border-strong: #C4BCAD;
  
  --ink: #2C302E;
  --ink-dim: #717774;
  --ink-light: #9DA3A0;
  
  --pastel-sage: #6B9080;
  --pastel-sage-hover: #5B7F70;
  --pastel-sage-soft: #E3ECE8;
  
  --pastel-terracotta: #D47B6A;
  --pastel-terracotta-hover: #C36B5A;
  --pastel-terracotta-soft: #F7E4E0;
  
  --pastel-amber: #DDA15E;
  --pastel-amber-soft: #F9EED9;
  
  --pastel-slate: #839788;
  --pastel-slate-soft: #E8EDE9;

  --shadow-sm: 0 2px 8px rgba(44, 48, 46, 0.06);
  --shadow-md: 0 6px 20px rgba(44, 48, 46, 0.08);
  --shadow-lg: 0 12px 36px rgba(44, 48, 46, 0.12);

  --font-ui: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'Space Mono', monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: var(--bg);
  font-family: var(--font-ui);
  color: var(--ink);
  touch-action: none;
}

#c {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: 1;
}

/* Header Navigation Bar */
#top-bar {
  position: fixed;
  top: max(12px, env(safe-area-inset-top));
  left: 14px;
  right: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  z-index: 10;
  pointer-events: none;
}
#top-bar > * {
  pointer-events: auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface);
  backdrop-filter: blur(12px);
  padding: 7px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.brand-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  background: var(--pastel-sage-soft);
  color: var(--pastel-sage);
  padding: 3px 6px;
  border-radius: 6px;
  font-weight: 700;
  border: 1px solid rgba(107, 144, 128, 0.25);
}
.brand-title {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: 0.04em;
  margin: 0;
}

/* Perspective Camera Pill Switcher */
.cam-modes {
  display: flex;
  background: var(--surface);
  backdrop-filter: blur(12px);
  padding: 4px;
  border-radius: 10px;
  border: 1px solid var(--border);
  gap: 4px;
  box-shadow: var(--shadow-sm);
}

.pastel-btn {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 700;
  padding: 8px 13px;
  background: transparent;
  color: var(--ink-dim);
  border: 1px solid transparent;
  border-radius: 7px;
  cursor: pointer;
  transition: all 0.15s ease;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.pastel-btn:hover {
  color: var(--ink);
  background: var(--surface-hover);
}
.pastel-btn.active {
  background: var(--pastel-sage);
  color: #FFFFFF;
  border-color: var(--pastel-sage);
  box-shadow: 0 2px 8px rgba(107, 144, 128, 0.35);
}
.pastel-btn.primary {
  background: var(--pastel-sage);
  color: #FFFFFF;
  border-color: var(--pastel-sage);
}
.pastel-btn.primary:hover {
  background: var(--pastel-sage-hover);
}
.pastel-btn.danger {
  background: var(--pastel-terracotta-soft);
  color: var(--pastel-terracotta);
  border-color: rgba(212, 123, 106, 0.3);
}
.pastel-btn.danger:hover {
  background: var(--pastel-terracotta);
  color: #FFFFFF;
}
.pastel-btn.danger.active {
  background: var(--pastel-terracotta);
  color: #FFFFFF;
  box-shadow: 0 2px 8px rgba(212, 123, 106, 0.35);
}
.pastel-btn.full {
  width: 100%;
  padding: 12px;
  text-align: center;
  border-radius: 8px;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--surface);
  backdrop-filter: blur(12px);
  padding: 4px 6px;
  border-radius: 10px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.pastel-pill-btn {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  padding: 7px 11px;
  background: transparent;
  color: var(--ink-dim);
  border: 1px solid var(--border);
  border-radius: 7px;
  cursor: pointer;
  transition: all 0.15s;
}
.pastel-pill-btn:hover {
  color: var(--ink);
  background: var(--surface-hover);
}
.pastel-pill-btn.active {
  color: #FFFFFF;
  background: var(--pastel-slate);
  border-color: var(--pastel-slate);
}

/* Stats HUD */
#stats-hud {
  position: fixed;
  top: max(56px, calc(env(safe-area-inset-top) + 48px));
  left: 14px;
  display: flex;
  gap: 8px;
  z-index: 9;
  pointer-events: none;
}
.stat-item {
  background: var(--surface);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  box-shadow: var(--shadow-sm);
}
.stat-lbl {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  color: var(--ink-light);
  letter-spacing: 0.05em;
}
.stat-val {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--ink);
}
.stat-val.amber { color: var(--pastel-amber); }
.stat-val.sage { color: var(--pastel-sage); }

/* Virtual Touch Joystick */
.joystick-zone {
  position: fixed;
  bottom: max(1.5rem, calc(env(safe-area-inset-bottom, 0px) + 1rem));
  left: max(1.5rem, calc(env(safe-area-inset-left, 0px) + 1rem));
  width: 104px;
  height: 104px;
  border-radius: 50%;
  background: rgba(248, 246, 242, 0.85);
  backdrop-filter: blur(10px);
  border: 2px solid var(--border);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 25;
  touch-action: none;
}
.joystick-zone.hidden {
  display: none !important;
}
.joystick-thumb {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--pastel-sage);
  border: 2px solid rgba(255, 255, 255, 0.8);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
  transition: transform 0.05s ease-out;
  pointer-events: none;
}

/* Palette Dock */
#palette-dock {
  position: fixed;
  bottom: max(12px, env(safe-area-inset-bottom));
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 10;
  max-width: min(920px, calc(100vw - 28px));
  box-shadow: var(--shadow-md);
}

.palette-categories {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 2px;
}
.palette-categories::-webkit-scrollbar { display: none; }

.cat-btn {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 700;
  padding: 5px 11px;
  background: var(--surface-solid);
  color: var(--ink-dim);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s;
}
.cat-btn:hover {
  background: var(--surface-hover);
  color: var(--ink);
}
.cat-btn.active {
  background: var(--pastel-sage-soft);
  color: var(--pastel-sage);
  border-color: rgba(107, 144, 128, 0.35);
  font-weight: 800;
}

.palette-items {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 4px 0;
  min-height: 72px;
}
.palette-items::-webkit-scrollbar {
  height: 4px;
}
.palette-items::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

.item-card {
  flex: 0 0 76px;
  height: 68px;
  background: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 4px;
  gap: 4px;
  transition: all 0.15s ease;
}
.item-card:hover {
  background: var(--surface-hover);
  border-color: var(--pastel-sage);
  transform: translateY(-1px);
}
.item-card.selected {
  background: var(--pastel-sage-soft);
  border-color: var(--pastel-sage);
  box-shadow: 0 0 0 1px var(--pastel-sage);
}
.item-card-preview {
  font-size: 18px;
  color: var(--pastel-sage);
  line-height: 1;
}
.item-card.selected .item-card-preview {
  color: var(--pastel-sage-hover);
}
.item-card-name {
  font-family: var(--font-ui);
  font-size: 9px;
  font-weight: 700;
  color: var(--ink);
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  width: 100%;
}

.palette-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* Modal Windows */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(44, 48, 46, 0.35);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  padding: 16px;
}
.modal[hidden] {
  display: none !important;
}

.modal-card {
  background: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: 16px;
  width: 100%;
  max-width: 480px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.modal-title {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: 0.03em;
}
.modal-close {
  background: transparent;
  border: none;
  font-size: 16px;
  color: var(--ink-dim);
  cursor: pointer;
  padding: 4px;
}
.modal-close:hover {
  color: var(--ink);
}

.modal-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.modal-sub {
  font-size: 12px;
  color: var(--ink-dim);
  line-height: 1.5;
}

.mp-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.field-label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  color: var(--ink-dim);
  letter-spacing: 0.04em;
}

.mp-room-info {
  background: var(--surface);
  border: 1px dashed var(--border-strong);
  border-radius: 10px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
}
.mp-room-info[hidden] {
  display: none !important;
}
.room-code-lbl {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  color: var(--ink-dim);
}
.room-code-val {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 800;
  color: var(--pastel-sage);
  letter-spacing: 0.18em;
}
.room-status {
  font-size: 11px;
  color: var(--ink-dim);
  display: flex;
  align-items: center;
  gap: 6px;
}
.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--pastel-sage);
  animation: pulse-dot 1.8s infinite ease-in-out;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.2); }
}

.mp-divider {
  display: flex;
  align-items: center;
  text-align: center;
  color: var(--ink-light);
  font-size: 10px;
  font-family: var(--font-mono);
}
.mp-divider::before, .mp-divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid var(--border);
}
.mp-divider span {
  padding: 0 10px;
}

.row {
  display: flex;
  gap: 8px;
}
.row input {
  flex: 1;
  padding: 10px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink);
  outline: none;
}
.row input:focus {
  border-color: var(--pastel-sage);
}

.mp-peers-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
}
.mp-peers-box[hidden] {
  display: none !important;
}
.peers-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 8px;
}
.peer-pill {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 11px;
  font-family: var(--font-mono);
}
.peer-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--pastel-sage);
}

/* Toast */
#toast {
  position: fixed;
  bottom: 110px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--ink);
  color: #FFFFFF;
  padding: 9px 18px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 100;
  white-space: nowrap;
}
#toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Mobile Responsive */
@media (max-width: 768px) {
  #top-bar {
    flex-wrap: wrap;
    gap: 8px;
  }
  .brand-title {
    display: none;
  }
  .cam-modes {
    order: 2;
  }
  .top-actions {
    order: 3;
  }
  #stats-hud {
    top: auto;
    bottom: 114px;
    left: 12px;
    right: 12px;
    justify-content: space-between;
  }
  .stat-item {
    padding: 4px 8px;
  }
  .stat-lbl {
    font-size: 8px;
  }
  .stat-val {
    font-size: 11px;
  }
  #palette-dock {
    width: calc(100vw - 20px);
    max-width: none;
    padding: 8px 10px;
  }
  .item-card {
    flex: 0 0 66px;
    height: 60px;
  }
}