/* Happy Hues #17 Theme Variables */
:root {
  --bg-cream: #fef6e4;
  --text-navy: #001858;
  --accent-pink: #f582ae;
  --accent-teal: #8bd3dd;
  --card-bg: #ffffff;
  --card-tint: #fff9ed;
  --border-navy: #001858;
  --shadow-color: rgba(0, 24, 88, 0.15);
  
  /* Authentic Chennai Soil Strata Colors */
  --soil-humus: #321c12;        /* O: Tropical leaf litter & petals */
  --soil-topsoil: #5a2c1a;      /* A: Chennai Red Sandy Loam */
  --soil-subsoil: #9c4221;      /* B: Red Laterite Iron Clay */
  --soil-parent: #736b62;       /* C: Weathered Granitic Regolith */
  --soil-bedrock: #3a393a;      /* R: Ancient Chennai Charnockite */
  
  --plant-green: #2d6a4f;
  --plant-leaf: #40916c;
  --gulmohar-red: #ef4444;
  --neem-green: #22c55e;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-cream);
  color: var(--text-navy);
  overflow: hidden;
  width: 100vw;
  height: 100vh;
  user-select: none;
}

/* Main Layout */
.app-container {
  position: relative;
  width: 100%;
  height: 100%;
}

#webgl-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* UI Overlays */
.ui-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 16px 22px;
}

.interactive {
  pointer-events: auto;
}

/* Top Header Bar */
.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 14px;
}

.header-brand {
  background: var(--card-bg);
  border: 3px solid var(--border-navy);
  border-radius: 20px;
  padding: 10px 18px;
  box-shadow: 4px 4px 0px var(--border-navy);
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  font-size: 30px;
  line-height: 1;
  animation: gentle-bounce 3s infinite ease-in-out;
}

@keyframes gentle-bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-3px); }
}

.brand-text h1 {
  font-size: 18px;
  font-weight: 900;
  letter-spacing: -0.4px;
  color: var(--text-navy);
  line-height: 1.15;
}

.brand-location-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: #fdf2f4;
  border: 1.5px solid var(--border-navy);
  border-radius: 100px;
  padding: 1px 8px;
  font-size: 10px;
  font-weight: 800;
  color: var(--accent-pink);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 3px;
}

/* Chennai Tree Switcher Controls */
.tree-selector-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--card-bg);
  border: 3px solid var(--border-navy);
  border-radius: 18px;
  padding: 6px 10px;
  box-shadow: 4px 4px 0px var(--border-navy);
}

.tree-pill-btn {
  background: var(--bg-cream);
  border: 2px solid var(--border-navy);
  border-radius: 12px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 800;
  color: var(--text-navy);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s ease;
}

.tree-pill-btn:hover {
  background: #ffffff;
  transform: translateY(-1px);
}

.tree-pill-btn.active {
  background: var(--accent-pink);
  color: #ffffff;
  box-shadow: 2px 2px 0px var(--border-navy);
}

/* Action Toolbar (Rain, Sun, X-Ray, Sound) */
.tool-bar {
  display: flex;
  gap: 8px;
  background: var(--card-bg);
  border: 3px solid var(--border-navy);
  border-radius: 18px;
  padding: 6px 10px;
  box-shadow: 4px 4px 0px var(--border-navy);
  align-items: center;
}

.tool-btn {
  background: var(--bg-cream);
  border: 2px solid var(--border-navy);
  border-radius: 12px;
  padding: 7px 12px;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-navy);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s ease;
  box-shadow: 2px 2px 0px var(--border-navy);
}

.tool-btn:hover {
  transform: translateY(-2px);
  box-shadow: 3px 3px 0px var(--border-navy);
  background: #ffffff;
}

.tool-btn:active {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0px var(--border-navy);
}

.tool-btn.active {
  background: var(--accent-pink);
  color: #ffffff;
}

.tool-btn.active-teal {
  background: var(--accent-teal);
  color: var(--text-navy);
}

/* Left Layer Inspector Dock */
.left-dock {
  position: absolute;
  top: 95px;
  left: 22px;
  display: flex;
  flex-direction: column;
  gap: 7px;
  background: var(--card-bg);
  border: 3px solid var(--border-navy);
  border-radius: 18px;
  padding: 12px 14px;
  box-shadow: 4px 4px 0px var(--border-navy);
  max-width: 230px;
}

.dock-title {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--text-navy);
  opacity: 0.75;
  margin-bottom: 2px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.layer-chip {
  background: var(--bg-cream);
  border: 2px solid var(--border-navy);
  border-radius: 10px;
  padding: 6px 10px;
  font-size: 11.5px;
  font-weight: 700;
  color: var(--text-navy);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.15s ease;
  text-align: left;
}

.layer-chip:hover {
  transform: translateX(4px);
  background: #ffffff;
}

.layer-chip.active {
  border-color: var(--border-navy);
  background: var(--accent-teal);
  box-shadow: 2px 2px 0px var(--border-navy);
}

.layer-dot {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  border: 1.5px solid var(--border-navy);
  flex-shrink: 0;
}

/* Camera View Switches */
.camera-views {
  position: absolute;
  top: 95px;
  right: 22px;
  display: flex;
  flex-direction: column;
  gap: 7px;
  background: var(--card-bg);
  border: 3px solid var(--border-navy);
  border-radius: 18px;
  padding: 12px;
  box-shadow: 4px 4px 0px var(--border-navy);
}

.cam-btn {
  background: var(--bg-cream);
  border: 2px solid var(--border-navy);
  border-radius: 10px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-navy);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s ease;
}

.cam-btn:hover {
  background: #ffffff;
  transform: translateY(-1px);
}

.cam-btn.active {
  background: var(--accent-pink);
  color: #ffffff;
  box-shadow: 2px 2px 0px var(--border-navy);
}

/* Center Bottom Story & Stage Control Card */
.bottom-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}

.story-card {
  background: var(--card-bg);
  border: 3px solid var(--border-navy);
  border-radius: 18px;
  padding: 10px 18px;
  box-shadow: 4px 4px 0px var(--border-navy);
  max-width: 700px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
}

.story-badge-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.stage-pill {
  background: var(--accent-pink);
  color: #ffffff;
  border: 2px solid var(--border-navy);
  border-radius: 100px;
  padding: 2px 10px;
  font-size: 10.5px;
  font-weight: 900;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.stage-title {
  font-size: 16px;
  font-weight: 900;
  color: var(--text-navy);
  margin-top: 0px;
}

.stage-desc {
  font-size: 12.8px;
  line-height: 1.4;
  color: var(--text-navy);
  font-weight: 500;
}

.stage-desc b {
  color: var(--text-navy);
  font-weight: 800;
  text-decoration: underline decoration-2 decoration-[var(--accent-pink)];
}

.science-callout {
  background: #f7fcfa;
  border: 2px dashed var(--accent-teal);
  border-radius: 10px;
  padding: 5px 10px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-navy);
  display: flex;
  align-items: center;
  gap: 8px;
}

.science-callout-icon {
  font-size: 18px;
  flex-shrink: 0;
}

/* Stage Navigation Scrub Controls */
.nav-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  margin-top: 3px;
}

.nav-btn {
  background: var(--bg-cream);
  border: 2px solid var(--border-navy);
  border-radius: 12px;
  padding: 7px 14px;
  font-size: 12.5px;
  font-weight: 800;
  color: var(--text-navy);
  cursor: pointer;
  box-shadow: 2px 2px 0px var(--border-navy);
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  gap: 5px;
  flex-shrink: 0;
}

.nav-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 3px 3px 0px var(--border-navy);
  background: var(--accent-teal);
}

.nav-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  box-shadow: none;
}

.timeline-track {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-grow: 1;
  background: var(--bg-cream);
  border: 2px solid var(--border-navy);
  border-radius: 100px;
  padding: 4px 8px;
  position: relative;
}

.stage-step-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid var(--border-navy);
  background: var(--card-bg);
  font-size: 12px;
  font-weight: 800;
  color: var(--text-navy);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
  z-index: 2;
}

.stage-step-btn:hover {
  transform: scale(1.15);
}

.stage-step-btn.completed {
  background: var(--accent-teal);
}

.stage-step-btn.active {
  background: var(--accent-pink);
  color: #ffffff;
  transform: scale(1.2);
  box-shadow: 2px 2px 0px var(--border-navy);
}

.auto-play-btn {
  background: var(--card-bg);
  border: 2px solid var(--border-navy);
  border-radius: 12px;
  padding: 7px 12px;
  font-size: 12.5px;
  font-weight: 800;
  color: var(--text-navy);
  cursor: pointer;
  box-shadow: 2px 2px 0px var(--border-navy);
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  gap: 5px;
  flex-shrink: 0;
}

.auto-play-btn.playing {
  background: var(--accent-pink);
  color: #ffffff;
}

/* Modal Fact Card for Soil Layer Inspection */
.layer-modal {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.95);
  background: var(--card-bg);
  border: 3px solid var(--border-navy);
  border-radius: 24px;
  padding: 22px 26px;
  box-shadow: 8px 8px 0px var(--border-navy);
  max-width: 520px;
  width: 90%;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.layer-modal.open {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, -50%) scale(1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.modal-layer-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-teal);
  border: 2px solid var(--border-navy);
  border-radius: 100px;
  padding: 4px 12px;
  font-size: 11.5px;
  font-weight: 900;
  text-transform: uppercase;
}

.close-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--border-navy);
  background: var(--bg-cream);
  font-size: 15px;
  font-weight: 900;
  color: var(--text-navy);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 2px 2px 0px var(--border-navy);
  transition: all 0.15s ease;
}

.close-btn:hover {
  background: var(--accent-pink);
  color: #ffffff;
  transform: scale(1.1);
}

.modal-title {
  font-size: 20px;
  font-weight: 900;
  color: var(--text-navy);
  margin-bottom: 6px;
}

.modal-body {
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--text-navy);
  font-weight: 500;
  margin-bottom: 14px;
}

.modal-fact-box {
  background: #fff8eb;
  border: 2px solid var(--border-navy);
  border-radius: 14px;
  padding: 10px 14px;
  margin-bottom: 12px;
  font-size: 12.5px;
  font-weight: 600;
  box-shadow: 3px 3px 0px var(--border-navy);
}

.modal-fact-box h4 {
  font-size: 11.5px;
  font-weight: 900;
  text-transform: uppercase;
  color: var(--accent-pink);
  margin-bottom: 3px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
}

/* Sunlight Floating Slider */
.sun-slider-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-cream);
  border: 2px solid var(--border-navy);
  border-radius: 12px;
  padding: 5px 10px;
}

.sun-slider-wrap input[type=range] {
  accent-color: var(--accent-pink);
  cursor: pointer;
  width: 75px;
}

/* Dessert Modal Styling (Textbook Page 153) */
.dessert-modal {
  max-width: 560px;
}

.dessert-recipe-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 12px 0;
}

.dessert-item {
  background: var(--bg-cream);
  border: 2px solid var(--border-navy);
  border-radius: 14px;
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  box-shadow: 2px 2px 0px var(--border-navy);
  transition: transform 0.15s ease;
}

.dessert-item:hover {
  transform: translateX(4px);
  background: #ffffff;
}

.dessert-badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 10px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-radius: 6px;
  padding: 2px 8px;
  border: 1.5px solid var(--border-navy);
}

.dessert-food {
  font-size: 14px;
  font-weight: 800;
  color: var(--text-navy);
}

.dessert-desc {
  font-size: 12px;
  line-height: 1.4;
  color: var(--text-navy);
  opacity: 0.85;
}

/* Responsive adjustments */
@media (max-width: 900px) {
  .left-dock {
    display: none;
  }
  .camera-views {
    top: auto;
    bottom: 230px;
    right: 16px;
  }
  .story-card {
    padding: 12px 16px;
  }
  .stage-title {
    font-size: 15px;
  }
  .stage-desc {
    font-size: 12.5px;
  }
}