/* ========================================
   FONTS
======================================== */
@import url("https://fonts.googleapis.com/css2?family=Archivo:wght@300;400;600;700&family=Inter:wght@300;400;500&display=swap");

/* ========================================
   RESET & BASE STYLES
======================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Color palette - Modern architectural feel */
  --color-bg: #0a0e1a;
  --color-primary: #ffffff;
  --color-accent: #4a9eff;
  --color-accent-hover: #6bb3ff;
  --color-text: #e8eef5;
  --color-text-dim: #8a95a8;

  /* Typography */
  --font-display: "Archivo", sans-serif;
  --font-body: "Inter", system-ui, sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;

  /* Timing */
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  overflow: hidden;
  background: var(--color-bg);
}

/* ========================================
   CANVAS
======================================== */
#canvas-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

canvas {
  display: block;
  outline: none;
}

/* ========================================
   UI OVERLAY LAYER
======================================== */
#ui-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10;
  pointer-events: none;
}

#ui-overlay > *:not(.hero-section) {
  pointer-events: auto;
}

/* ========================================
   HERO SECTION (LANDING)
======================================== */
.hero-section {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  z-index: 15;
  width: 90%;
  max-width: 800px;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  pointer-events: none;
}

.hero-section .btn {
  pointer-events: auto;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 300;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  margin-bottom: 1rem;
  opacity: 0;
  transform: translateY(30px);
}

.hero-year {
  font-family: var(--font-display);
  font-size: clamp(4rem, 15vw, 12rem);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: var(--color-primary);
  margin-bottom: 3rem;
  opacity: 0;
  transform: translateY(50px);
  background: linear-gradient(135deg, #ffffff 0%, #4a9eff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-buttons {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(30px);
}

.btn {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  padding: 1rem 2.5rem;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.3s var(--ease-smooth);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition:
    width 0.6s,
    height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn span {
  position: relative;
  z-index: 1;
}

.btn-primary {
  background: rgba(255, 255, 255, 0.15);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.5);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
  transform: translateY(-2px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-primary);
  border: 2px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

/* ========================================
   POINTS OF INTEREST (POI)
======================================== */
.poi-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 20;
  display: none;
  /* Hidden until "Explore" is clicked */
}

.poi {
  position: absolute;
  pointer-events: auto;
  cursor: pointer;
}

.poi-marker {
  width: 40px;
  height: 40px;
  background: rgba(74, 158, 255, 0.2);
  border: 2px solid var(--color-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease, background 0.3s ease;
  backdrop-filter: blur(5px);
  position: relative;
}

.poi-marker::before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 2px solid var(--color-accent);
  animation: poi-pulse 2s ease-out infinite;
}

@keyframes poi-pulse {
  0% {
    transform: scale(1);
    opacity: 1;
  }

  100% {
    transform: scale(2);
    opacity: 0;
  }
}

.poi-marker-inner {
  width: 12px;
  height: 12px;
  background: var(--color-accent);
  border-radius: 50%;
}

.poi:hover .poi-marker {
  transform: scale(1.2);
  background: rgba(74, 158, 255, 0.4);
}

.poi-label {
  position: absolute;
  top: 50%;
  left: calc(100% + 1rem);
  transform: translateY(-50%);
  background: rgba(10, 14, 26, 0.9);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 0.5rem 1rem;
  white-space: nowrap;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-primary);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease-smooth);
}

.poi:hover .poi-label {
  opacity: 1;
}

/* POI Popup (Bottom Center) */
.poi-popup {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) translateY(100%);
  z-index: 150;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-bottom: none;
  border-radius: 12px 12px 0 0;
  box-shadow:
    0 -4px 30px rgba(0, 0, 0, 0.15),
    0 -2px 10px rgba(0, 0, 0, 0.08);
  padding: 12px;
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 16px;
  max-width: 400px;
  opacity: 0;
  transition: all 0.4s var(--ease-spring);
  pointer-events: none;
}

.poi-popup.active {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.poi-popup-image {
  width: 80px;
  height: 80px;
  border-radius: 8px;
  overflow: hidden;
  flex-shrink: 0;
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.poi-popup-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.poi-popup-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.poi-popup-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: #1a1a1a;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.poi-popup-description {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: #666;
  line-height: 1.4;
}

.poi-popup-close {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.05);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  color: #666;
}

.poi-popup-close:hover {
  background: rgba(0, 0, 0, 0.1);
  color: #1a1a1a;
}

/* Responsive */
@media (max-width: 768px) {
  .poi-popup {
    max-width: calc(100% - 2rem);
    padding: 10px;
    gap: 12px;
  }

  .poi-popup-image {
    width: 60px;
    height: 60px;
  }

  .poi-popup-title {
    font-size: 0.9rem;
  }

  .poi-popup-description {
    font-size: 0.75rem;
  }
}

/* ========================================
   CONTROLS INDICATOR (Bottom Right)
======================================== */
.controls-indicator {
  position: fixed;
  bottom: var(--spacing-md);
  right: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 25;
  opacity: 0;
  pointer-events: none;
}

.control-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 20px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.control-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.7);
}

.control-icon svg {
  width: 14px;
  height: 14px;
}

.control-text {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

/* Hide in gallery mode */
body.gallery-mode .controls-indicator {
  display: none !important;
}

/* Responsive */
@media (max-width: 768px) {
  .controls-indicator {
    bottom: var(--spacing-sm);
    right: var(--spacing-sm);
    gap: 6px;
  }

  .control-item {
    padding: 6px 10px;
    gap: 8px;
  }

  .control-icon svg {
    width: 12px;
    height: 12px;
  }

  .control-text {
    font-size: 0.6rem;
  }
}

/* ========================================
   FADE OVERLAY (White Transition)
======================================== */
.fade-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #ffffff;
  z-index: 90;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease;
}

.fade-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

/* ========================================
   LOADING SCREEN
======================================== */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 100;
  gap: 2rem;
}

.loading-text {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--color-text-dim);
}

.loading-bar {
  width: 300px;
  height: 3px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  overflow: hidden;
}

.loading-progress {
  height: 100%;
  background: var(--color-accent);
  width: 0%;
  transition: width 0.3s ease;
}

/* ========================================
   CONTROLS INFO
======================================== */

/* ========================================
   HOME BUTTON (EXPLORE MODE)
======================================== */
.btn-home {
  position: absolute;
  top: var(--spacing-md);
  left: var(--spacing-md);
  display: none;
  opacity: 0;
  transform: translateY(-20px);
  padding: 0.75rem 1.5rem;
  z-index: 20;

  /* Dark UI Blue Style Liquid Glass */
  /* EXPLORER BUTTON STYLE COPY (Primary Style) */
  background: var(--color-accent);
  color: #ffffff;
  border: none;
  border-radius: 50px;
  box-shadow: 0 10px 30px rgba(74, 158, 255, 0.3);
  font-family: var(--font-body);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all 0.3s var(--ease-smooth);
  cursor: pointer;
  overflow: hidden;
}

.btn-home::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition:
    width 0.6s,
    height 0.6s;
  z-index: 0;
  pointer-events: none;
}

.btn-home:hover::before {
  width: 300px;
  height: 300px;
}

.btn-home.visible {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.btn-home:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 15px 40px rgba(74, 158, 255, 0.4);
  transform: translateY(-2px);
  color: #ffffff;
}

.btn-home span,
.btn-home svg {
  position: relative;
  z-index: 1;
}

.btn-home-icon,
.btn-icon {
  flex-shrink: 0;
}

.btn-home span {
  position: relative;
  z-index: 1;
}

/* ========================================
   RESPONSIVE
======================================== */
@media (max-width: 768px) {
  .header {
    padding: var(--spacing-sm);
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    width: 100%;
  }

  .controls-info {
    left: var(--spacing-sm);
    right: var(--spacing-sm);
    bottom: var(--spacing-sm);
    font-size: 0.7rem;
  }

  .btn-home,
  .btn-discover-overlay {
    top: var(--spacing-sm);
    font-size: 0.75rem;
    padding: 0.625rem 1.25rem;
  }

  .btn-home {
    left: var(--spacing-sm);
  }

  .btn-discover-overlay {
    right: var(--spacing-sm);
  }

  .btn-home-icon,
  .btn-icon {
    width: 16px;
    height: 16px;
  }
}

/* ========================================
   GALLERY NAVIGATION (TINY SPACES)
======================================== */
.gallery-nav {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  padding: var(--spacing-md);
  width: 100%;
  max-width: 1200px;
  opacity: 0;
  z-index: 30;
}

.gallery-nav.visible {
  display: flex;
}

.gallery-nav-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
}

.gallery-arrow {
  position: fixed;
  bottom: 1rem;
  width: auto;
  height: auto;
  border-radius: 4px;
  background: #fff;
  border: 1px solid rgba(0, 0, 0, 0.1);
  color: #1a1a1a;
  backdrop-filter: blur(10px);
  cursor: pointer;
  transition: all 0.3s var(--ease-smooth);
  display: none;
  align-items: flex-start;
  padding: 0.5rem;
  user-select: none;
  z-index: 35;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.gallery-arrow.visible {
  display: flex;
}

.gallery-arrow-prev {
  left: 1rem;
}

.gallery-arrow-next {
  right: 1rem;
}

.nav-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  width: 140px;
}

.nav-title {
  display: none;
}

.gallery-arrow-prev .nav-title {
  left: calc(100% + 0.75rem);
  /* Reduced offset */
  text-align: left;
}

.gallery-arrow-next .nav-title {
  right: calc(100% + 0.75rem);
  /* Reduced offset */
  text-align: right;
}

.gallery-arrow:hover .nav-title {
  opacity: 1;
}

.gallery-arrow-prev:hover .nav-title {
  transform: translateY(-50%) translateX(10px);
}

.gallery-arrow-next:hover .nav-title {
  transform: translateY(-50%) translateX(-10px);
}

.nav-image {
  width: 100%;
  height: 90px;
  object-fit: cover;
  border-radius: 2px;
  background: #f0f0f0;
}

.nav-icon {
  position: absolute;
  bottom: 0px;
  /* Permanent placement at the bottom */
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: #fff;
  border-radius: 4px 0px 0px 0px;
  /* White square */
  color: #1a1a1a;
  /* Dark arrow */
  opacity: 1;
  /* Permanently visible */
  transform: scale(1);
  transition: all 0.3s var(--ease-smooth);
  z-index: 2;
}

.gallery-arrow-prev .nav-icon {
  left: -2px;
  border-radius: 0px 4px 0px 0px;
  /* Bottom-left for prev */
}

.gallery-arrow-next .nav-icon {
  right: -2px;
  /* Bottom-right for next */
}

.gallery-arrow:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
  background: rgba(255, 255, 255, 1);
}

.gallery-arrow:active {
  transform: scale(0.95);
}

.gallery-arrow svg {
  flex-shrink: 0;
}

.gallery-info {
  text-align: center;
  color: var(--color-primary);
  min-width: 250px;
}

.gallery-counter {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.8;
  margin-bottom: 0.5rem;
}

.gallery-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Discover Button - Style TinySpace01 */
.gallery-discover-btn {
  background: #fff;
  color: #000;
  border: none;
  padding: 0.8rem 2rem;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  font-family: var(--font-body);
  user-select: none;
}

.gallery-discover-btn:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 8px 30px rgba(255, 255, 255, 0.3);
}

.gallery-discover-btn:active {
  transform: translateY(0) scale(0.98);
}

/* Legacy info button (kept for compatibility) */
.gallery-info-btn {
  padding: 0.875rem 2rem;
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 50px;
  color: var(--color-primary);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  backdrop-filter: blur(10px);
  cursor: pointer;
  transition: all 0.3s var(--ease-smooth);
  display: none;
  /* Hidden - replaced by discover button */
  align-items: center;
  gap: 0.5rem;
  user-select: none;
}

.gallery-info-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.gallery-info-btn svg {
  flex-shrink: 0;
}

/* Gallery Info Panel */
.gallery-panel {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  max-height: 50vh;
  background: rgba(10, 14, 26, 0.95);
  backdrop-filter: blur(20px);
  border-top: 2px solid rgba(255, 255, 255, 0.1);
  padding: var(--spacing-lg);
  transform: translateY(100%);
  transition: transform 0.4s var(--ease-smooth);
  z-index: 40;
  overflow-y: auto;
}

.gallery-panel.open {
  transform: translateY(0);
}

.gallery-panel-close {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.2);
  color: var(--color-primary);
  cursor: pointer;
  transition: all 0.3s var(--ease-smooth);
  display: flex;
  align-items: center;
  justify-content: center;
  user-select: none;
}

.gallery-panel-close:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
  transform: rotate(90deg);
}

.gallery-panel-content {
  max-width: 800px;
  margin: 0 auto;
  color: var(--color-primary);
}

.gallery-panel-student {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  opacity: 0.7;
  margin: 0 0 0.5rem 0;
}

.gallery-panel-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin: 0 0 var(--spacing-md) 0;
}

.gallery-panel-section {
  margin-bottom: var(--spacing-md);
}

.gallery-panel-section h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin: 0 0 0.75rem 0;
  opacity: 0.9;
}

.gallery-panel-section p {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  margin: 0;
  opacity: 0.85;
}

/* ========================================
   HIDDEN STATE
======================================== */
.hidden {
  display: none !important;
}

/* ========================================
   DISCOVER OVERLAY UI
======================================== */

.btn-discover-overlay {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  padding: 0.75rem 1.5rem;
  z-index: 100;

  /* EXPLORER BUTTON STYLE COPY (Primary Style) */
  background: var(--color-accent);
  color: #ffffff;
  border: none;
  border-radius: 50px;
  box-shadow: 0 10px 30px rgba(74, 158, 255, 0.3);
  font-family: var(--font-body);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all 0.3s var(--ease-smooth);
  cursor: pointer;
  overflow: hidden;

  /* Start state */
  opacity: 0;
  pointer-events: none;
  transform: translateY(-20px);

  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.btn-discover-overlay::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition:
    width 0.6s,
    height 0.6s;
  z-index: 0;
  pointer-events: none;
}

.btn-discover-overlay:hover::before {
  width: 300px;
  height: 300px;
}

.btn-discover-overlay:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 15px 40px rgba(74, 158, 255, 0.4);
  transform: translateY(-2px);
  color: #ffffff;
}

.btn-discover-overlay span,
.btn-discover-overlay svg {
  position: relative;
  z-index: 1;
}

.btn-discover-overlay.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.btn-discover-overlay:active {
  transform: translateY(0) scale(0.98);
}

/* ═══════════════════════════════════════════════════════════════
   DETAILS SLIDE (Full White Overlay)
   ═══════════════════════════════════════════════════════════════ */

.details-slide {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #ffffff;
  z-index: 2000;
  overflow-y: auto;
  transform: translateY(100%);
  transition: transform 0.8s cubic-bezier(0.83, 0, 0.17, 1);
  color: #1a1a1a;
  display: block;
  /* Ensure it is layout-able */
}

.details-slide.active {
  transform: translateY(0);
}

.slide-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 6rem 2rem;
  position: relative;
  opacity: 0;
  transform: translateY(40px);
  transition:
    opacity 0.6s ease 0.3s,
    transform 0.6s ease 0.3s;
}

.details-slide.active .slide-container {
  opacity: 1;
  transform: translateY(0);
}

.btn-close {
  position: fixed;
  top: 2rem;
  right: 2rem;
  background: rgba(0, 0, 0, 0.05);
  border: none;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  z-index: 2001;
  color: #1a1a1a;
}

.btn-close:hover {
  background: #000;
  color: #fff;
  transform: rotate(90deg);
}

/* Header */
.slide-header {
  text-align: center;
  margin-bottom: 4rem;
}

.slide-title {
  font-size: 3rem;
  font-weight: 300;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  color: #000;
  font-family: var(--font-display);
}

.slide-meta {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.chip {
  padding: 0.4rem 1rem;
  background: #f4f4f4;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
  color: #666;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: var(--font-body);
}

/* Body */
.synopsis {
  font-size: 1.2rem;
  line-height: 1.7;
  color: #444;
  text-align: left;
  max-width: 700px;
  margin: 0 auto 1.5rem;
  font-weight: 400;
}

/* Gallery */
.gallery {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-bottom: 5rem;
}

.gallery-item {
  width: 100%;
  overflow: hidden;
  border-radius: 4px;
}

.gallery-item img {
  width: 100%;
  height: auto;
  max-height: 500px;
  object-fit: cover;
  transition: transform 0.7s ease;
}

.gallery-item:hover img {
  transform: scale(1.03);
}

/* Materials */
.materials-section {
  border-top: 1px solid #eaeaea;
  padding-top: 4rem;
  text-align: center;
}

.materials-section h3 {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #999;
  margin-bottom: 2rem;
}

.materials-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  padding: 0;
}

.materials-list li {
  font-size: 1.1rem;
  color: #000;
  font-weight: 500;
  position: relative;
}

.materials-list li::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: #000;
  transition: width 0.3s ease;
}

.materials-list li:hover::after {
  width: 100%;
}

/* ═══════════════════════════════════════════════════════════════
   PROJECT DETAILS SLIDE (Full White Overlay - TinySpace01 Style)
   ═══════════════════════════════════════════════════════════════ */

.project-details-slide {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #ffffff;
  z-index: 2000;
  overflow-y: auto;
  transform: translateY(100%);
  transition: transform 0.8s cubic-bezier(0.83, 0, 0.17, 1);
  color: #1a1a1a;
}

.project-details-slide.active {
  transform: translateY(0);
}

.project-details-slide .slide-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 6rem 2rem;
  position: relative;
  opacity: 0;
  transform: translateY(40px);
  transition:
    opacity 0.6s ease 0.3s,
    transform 0.6s ease 0.3s;
}

.project-details-slide.active .slide-container {
  opacity: 1;
  transform: translateY(0);
}

.gallery-caption {
  padding: 1rem 0;
  font-size: 0.9rem;
  color: #666;
  font-weight: 400;
  text-align: left;
  font-family: var(--font-body);
  border-bottom: 1px solid #eee;
}

/* ========================================
   ABOUT CARD (Bottom Center - Light Mode)
======================================== */
.about-card {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  margin: 0 auto;
  width: fit-content;
  z-index: 100;

  /* Light glass style */
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-bottom: none;
  border-radius: 8px 8px 0 0;
  box-shadow:
    0 -4px 30px rgba(0, 0, 0, 0.1),
    0 -2px 10px rgba(0, 0, 0, 0.05);

  padding: 8px;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  transform-origin: bottom center;

  /* Horizontal Layout */
  display: flex !important;
  flex-direction: row !important;
  align-items: center;
  text-align: left;
  gap: 12px;

  /* Initially hidden */
  opacity: 0;
}

.about-card:hover {
  transform: scale(1.05) !important;
  box-shadow:
    0 -8px 40px rgba(0, 0, 0, 0.15),
    0 -4px 15px rgba(0, 0, 0, 0.08);
}

.about-card-image {
  width: 48px;
  height: 48px;
  border-radius: 6px;
  overflow: hidden;
  flex-shrink: 0;
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.about-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-card-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
}

.about-card-title {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: #1a1a1a;
  line-height: 1.2;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.about-card-subtitle {
  font-family: var(--font-body);
  font-size: 0.7rem;
  color: #666;
  font-weight: 500;
  margin-top: 3px;
  letter-spacing: 0.02em;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .about-card {
    padding: 10px 16px;
    gap: 10px;
  }

  .about-card-image {
    width: 40px;
    height: 40px;
  }

  .about-card-title {
    font-size: 0.75rem;
  }

  .about-card-subtitle {
    font-size: 0.6rem;
  }
}

/* Credit & Remerciement sections */
.credit,
.remerciement {
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  gap: 0.5rem 2rem;
  margin-top: 1rem;
}

.credit h3,
.remerciement h3 {
  width: 100%;
  margin-bottom: 0.5rem;
}

.credit p,
.remerciement p {
  margin: 0;
}

.remerciement p span {
  display: block;
  font-size: 0.85em;
  font-style: italic;
  margin-top: 0.1rem;
}

/* Gallery Mode UI Overrides */
body.gallery-mode #btn-about,
body.gallery-mode #poi-container {
  display: none !important;
  opacity: 0 !important;
  pointer-events: none !important;
}