@import url('https://fonts.googleapis.com/css2?family=Fredoka:wght@400;500;600;700&family=Quicksand:wght@400;500;600;700;800&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
  --font-primary: 'Quicksand', system-ui, -apple-system, sans-serif;
  --font-heading: 'Fredoka', 'Quicksand', sans-serif;
  --font-body: 'Outfit', 'Quicksand', sans-serif;

  --color-brand: #f43f5e;
  --color-brand-light: #ffe4e6;
  --color-secondary: #0ea5e9;
  --color-accent: #f59e0b;
  --color-success: #10b981;
  --color-purple: #8b5cf6;

  --bg-gradient-light: linear-gradient(180deg, #f0f9ff 0%, #fdf4ff 50%, #fff1f2 100%);
  --card-bg-light: rgba(255, 255, 255, 0.95);
  --card-border-light: rgba(226, 232, 240, 0.8);
}

.dark-mode {
  --bg-gradient-light: linear-gradient(180deg, #090d16 0%, #0f172a 50%, #1e1b4b 100%);
  --card-bg-light: rgba(30, 41, 59, 0.92);
  --card-border-light: rgba(51, 65, 85, 0.8);
  color-scheme: dark;
}

body {
  font-family: var(--font-primary);
  background: var(--bg-gradient-light);
  min-height: 100vh;
  transition: background-color 0.4s ease, color 0.4s ease;
  overflow-x: hidden;
}

h1, h2, h3, .font-heading {
  font-family: var(--font-heading);
}

/* Floating Kid-Themed Cloud & Bubble Animation */
.floating-element {
  animation: floatAnim 6s ease-in-out infinite;
}

.floating-element-slow {
  animation: floatAnim 9s ease-in-out infinite alternate;
}

@keyframes floatAnim {
  0% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-10px) rotate(2deg); }
  100% { transform: translateY(0px) rotate(0deg); }
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 15px rgba(244, 63, 94, 0.4); }
  50% { box-shadow: 0 0 25px rgba(244, 63, 94, 0.7); }
}

.pulse-glow {
  animation: pulseGlow 2.5s infinite;
}

/* 3D Realistic Book Card Visual */
.book-card-container {
  perspective: 1000px;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.book-card-container:hover {
  transform: translateY(-8px) scale(1.01);
}

.book-card-container:hover .book-spine-effect {
  box-shadow: -8px 12px 25px -4px rgba(0, 0, 0, 0.25);
}

.book-spine-effect {
  position: relative;
  border-radius: 14px;
  transition: box-shadow 0.3s ease;
  box-shadow: -4px 6px 15px -3px rgba(0, 0, 0, 0.12);
  overflow: hidden;
}

.book-spine-effect::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 14px;
  background: linear-gradient(to right, rgba(0,0,0,0.3) 0%, rgba(255,255,255,0.2) 50%, rgba(0,0,0,0.15) 100%);
  z-index: 20;
  pointer-events: none;
}

/* Bookmark Ribbon Badge */
.bookmark-ribbon {
  position: absolute;
  top: 0;
  right: 14px;
  padding: 6px 10px 12px 10px;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 82%, 0 100%);
  font-weight: 700;
  font-size: 0.72rem;
  z-index: 30;
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.15);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Glassmorphism Glass Card */
.glass-panel {
  background: var(--card-bg-light);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--card-border-light);
  border-radius: 20px;
  box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.05);
}

.dark-mode .glass-panel {
  box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.4);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: #f1f5f9;
}

.dark-mode ::-webkit-scrollbar-track {
  background: #0f172a;
}

::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 10px;
  border: 2px solid transparent;
  background-clip: content-box;
}

::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* Category Pill Active State */
.cat-pill {
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.cat-pill:hover {
  transform: translateY(-2px);
}

.cat-pill.active {
  background: linear-gradient(135deg, #f43f5e 0%, #e11d48 100%);
  color: #ffffff !important;
  box-shadow: 0 4px 15px rgba(244, 63, 94, 0.35);
  border-color: transparent !important;
}

/* Starry Night Mode Stars */
.starry-background {
  background-image: 
    radial-gradient(2px 2px at 20px 30px, #e2e8f0, rgba(0,0,0,0)),
    radial-gradient(2px 2px at 40px 70px, #ffffff, rgba(0,0,0,0)),
    radial-gradient(1px 1px at 90px 40px, #e2e8f0, rgba(0,0,0,0)),
    radial-gradient(2px 2px at 160px 120px, #cbd5e1, rgba(0,0,0,0));
  background-repeat: repeat;
  background-size: 200px 200px;
}

/* Interactive Wheel animation */
@keyframes spinWheel {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(1440deg); }
}

.spinning {
  animation: spinWheel 3s cubic-bezier(0.15, 0.9, 0.25, 1) forwards;
}

/* Confetti particles for reading celebration */
.confetti {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  pointer-events: none;
  animation: confettiFall 2s linear forwards;
}

@keyframes confettiFall {
  0% { transform: translateY(0) rotate(0deg); opacity: 1; }
  100% { transform: translateY(120px) rotate(720deg); opacity: 0; }
}

/* Print Friendly Styles */
@media print {
  body {
    background: #ffffff !important;
    color: #000000 !important;
  }
  .no-print, header, footer, #filtersBar, #storyWheelSection, #analyticsSection, .btn-action {
    display: none !important;
  }
  .glass-panel {
    border: 1px solid #ccc !important;
    box-shadow: none !important;
  }
}