/* ==========================================================================
   KidGames Portal - Design System & Modern UI Styles
   ========================================================================== */

:root {
  /* Color Tokens */
  --bg-dark: #0f172a;
  --bg-card: rgba(30, 41, 59, 0.7);
  --bg-card-hover: rgba(51, 65, 85, 0.85);
  
  --primary-pink: #ff3366;
  --primary-purple: #8b5cf6;
  --primary-cyan: #00f0ff;
  --primary-yellow: #ffc700;
  --primary-green: #10b981;
  --primary-orange: #f97316;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --border-glass: rgba(255, 255, 255, 0.12);
  --border-glow: rgba(0, 240, 255, 0.4);
  
  --shadow-card: 0 20px 30px -10px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 25px rgba(255, 51, 102, 0.3);
  
  /* Typography */
  --font-heading: 'Fredoka', 'Baloo 2', sans-serif;
  --font-body: 'Outfit', sans-serif;
  
  /* Radius & Transitions */
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --transition-smooth: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Base Reset & Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-body);
  background-color: var(--bg-dark);
  color: var(--text-main);
  overflow-x: hidden;
}

body {
  min-height: 100vh;
  position: relative;
  background: radial-gradient(circle at 15% 15%, rgba(139, 92, 246, 0.25), transparent 40%),
              radial-gradient(circle at 85% 75%, rgba(0, 240, 255, 0.2), transparent 45%),
              radial-gradient(circle at 50% 50%, rgba(255, 51, 102, 0.15), transparent 60%),
              #0f172a;
  background-attachment: fixed;
}

/* Animated Particle Canvas Background */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
}

/* App Wrapper Container */
.app-container {
  position: relative;
  z-index: 1;
  max-width: 1320px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

/* ==========================================================================
   Header & Hero Section
   ========================================================================== */

.hero-header {
  text-align: center;
  padding: 3rem 1rem 2.5rem;
  margin-bottom: 2rem;
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.25rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-glass);
  border-radius: 50px;
  backdrop-filter: blur(10px);
  color: var(--primary-yellow);
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 1.25rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  animation: floatBadge 3s ease-in-out infinite alternate;
  cursor: default;
  user-select: none;
  -webkit-user-select: none;
}

@keyframes floatBadge {
  0% { transform: translateY(0); }
  100% { transform: translateY(-6px); }
}

.brand-badge span {
  font-size: 1.2rem;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #ffffff 0%, #ff99dd 40%, #00f0ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 2rem;
  line-height: 1.6;
}

/* Action Controls Bar (Stats, Surprise Me) */
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
}

.stat-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1.5rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
  color: var(--text-main);
  font-weight: 600;
  cursor: default;
  user-select: none;
  -webkit-user-select: none;
}

.stat-chip i {
  color: var(--primary-cyan);
  font-size: 1.2rem;
}

.btn-surprise {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.75rem;
  background: linear-gradient(135deg, var(--primary-pink), #ff0055);
  border: none;
  border-radius: var(--radius-md);
  color: #ffffff;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  box-shadow: 0 10px 25px rgba(255, 51, 102, 0.4);
  transition: all 0.3s var(--transition-smooth);
}

.btn-surprise:hover {
  transform: translateY(-4px) scale(1.03);
  box-shadow: 0 15px 35px rgba(255, 51, 102, 0.6);
  background: linear-gradient(135deg, #ff4d7d, #ff0066);
}

.btn-surprise:active {
  transform: translateY(-1px) scale(0.98);
}

/* ==========================================================================
   Filter & Search Toolbar
   ========================================================================== */

.toolbar-section {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 3rem;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-glass);
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
}

@media (min-width: 868px) {
  .toolbar-section {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

/* Search Box Input */
.search-wrapper {
  position: relative;
  flex: 1;
  max-width: 420px;
}

.search-wrapper i {
  position: absolute;
  left: 1.2rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
  font-size: 1.1rem;
  transition: color 0.3s ease;
  pointer-events: none;
  user-select: none;
  -webkit-user-select: none;
}

.search-input {
  width: 100%;
  padding: 0.85rem 1rem 0.85rem 3rem;
  background: rgba(30, 41, 59, 0.8);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 1rem;
  outline: none;
  transition: all 0.3s ease;
}

.search-input:focus {
  border-color: var(--primary-cyan);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
  background: rgba(30, 41, 59, 0.95);
}

.search-input:focus + i {
  color: var(--primary-cyan);
}

/* Category Filter Tabs */
.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.tab-btn {
  padding: 0.65rem 1.25rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  transition: all 0.3s ease;
}

.tab-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text-main);
  transform: translateY(-2px);
}

.tab-btn.active {
  background: linear-gradient(135deg, var(--primary-purple), #6d28d9);
  border-color: rgba(139, 92, 246, 0.6);
  color: #ffffff;
  box-shadow: 0 6px 16px rgba(139, 92, 246, 0.4);
}

/* ==========================================================================
   Games Grid & Cards
   ========================================================================== */

.games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

.game-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-card);
  transition: all 0.4s var(--transition-smooth);
  user-select: none;
  -webkit-user-select: none;
}

.game-card:hover {
  transform: translateY(-10px) scale(1.02);
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
  box-shadow: 0 25px 40px -10px rgba(0, 240, 255, 0.25), var(--shadow-card);
}

/* Card Header Banner / Visual Preview */
.card-preview {
  position: relative;
  height: 190px;
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.8), rgba(15, 23, 42, 0.9));
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-bottom: 1px solid var(--border-glass);
}

.card-preview-art {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.5s ease;
}

.game-card:hover .card-preview-art {
  transform: scale(1.1);
}

.card-emoji-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 46px;
  height: 46px;
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid var(--border-glass);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  backdrop-filter: blur(8px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
  cursor: default;
  user-select: none;
  -webkit-user-select: none;
}

.card-tag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  padding: 0.35rem 0.85rem;
  background: rgba(139, 92, 246, 0.8);
  border-radius: 50px;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  color: #ffffff;
  letter-spacing: 0.5px;
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  cursor: default;
  user-select: none;
  -webkit-user-select: none;
}

/* Card Body Content */
.card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.card-title i {
  font-size: 0.9rem;
  color: var(--text-dim);
  opacity: 0;
  transform: translateX(-5px);
  transition: all 0.3s ease;
}

.game-card:hover .card-title i {
  opacity: 1;
  transform: translateX(0);
  color: var(--primary-cyan);
}

.card-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 1.25rem;
  flex: 1;
}

/* Feature Badges List */
.card-features {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.feature-pill {
  padding: 0.25rem 0.65rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  color: var(--text-dim);
  cursor: default;
  user-select: none;
  -webkit-user-select: none;
}

/* Card Play Button */
.card-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  width: 100%;
  padding: 0.85rem;
  background: linear-gradient(135deg, var(--primary-cyan), #0284c7);
  border: none;
  border-radius: var(--radius-md);
  color: #0f172a;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  transition: all 0.3s ease;
  box-shadow: 0 8px 20px rgba(0, 240, 255, 0.3);
}

.game-card:hover .card-btn {
  background: linear-gradient(135deg, #00f0ff, var(--primary-yellow));
  box-shadow: 0 10px 25px rgba(0, 240, 255, 0.5);
  color: #000000;
}

.card-btn i {
  transition: transform 0.3s ease;
}

.game-card:hover .card-btn i {
  transform: translateX(4px);
}

/* Empty Search State */
.no-results {
  grid-column: 1 / -1;
  text-align: center;
  padding: 4rem 2rem;
  background: rgba(30, 41, 59, 0.4);
  border: 1px border-glass;
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
}

.no-results-icon {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  display: block;
}

.no-results h3 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  margin-bottom: 0.5rem;
}

.no-results p {
  color: var(--text-muted);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.portal-footer {
  border-top: 1px solid var(--border-glass);
  padding: 2.5rem 1rem 1rem;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.95rem;
}

.footer-brand {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.footer-brand span {
  color: var(--primary-pink);
}

.footer-text {
  margin-bottom: 1.5rem;
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.footer-link {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-link:hover {
  color: var(--primary-cyan);
}

/* Responsive Media Queries */
@media (max-width: 640px) {
  .hero-title {
    font-size: 2.4rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .games-grid {
    grid-template-columns: 1fr;
  }
}