/* ============================================
   Fun Learning Park - Advanced Interactive Styles
   ============================================ */

/* ---------- Enhanced Navbar Variant ---------- */
.navbar-fun {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
}

.navbar-fun .nav-link {
  position: relative;
  overflow: hidden;
}

.navbar-fun .nav-link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: all 0.3s ease;
  transform: translateX(-50%);
  border-radius: var(--radius-full);
}

.navbar-fun .nav-link:hover::before,
.navbar-fun .nav-link.active::before {
  width: 60%;
}

.navbar-fun .nav-link.active::after {
  display: none;
}

/* ---------- Creative Hero Header ---------- */
.fun-hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--header-height);
  background:
    radial-gradient(ellipse at 20% 50%, rgba(220, 38, 38, 0.25) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(245, 158, 11, 0.15) 0%, transparent 40%),
    linear-gradient(135deg, #1a0505 0%, #2d0a0a 30%, #450a0a 60%, #1a0505 100%);
}

.fun-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 30% 40%, rgba(220, 38, 38, 0.3) 0%, transparent 25%),
    radial-gradient(circle at 70% 60%, rgba(245, 158, 11, 0.2) 0%, transparent 20%);
}

.fun-hero-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.hero-particle {
  position: absolute;
  background: var(--gold-400);
  border-radius: 50%;
  opacity: 0;
  animation: hero-float 6s ease-in-out infinite;
}

@keyframes hero-float {
  0% { opacity: 0; transform: translateY(100vh) scale(0); }
  10% { opacity: 0.6; }
  90% { opacity: 0.6; }
  100% { opacity: 0; transform: translateY(-20vh) scale(1); }
}

.fun-hero-deco {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.float-icon {
  position: absolute;
  left: var(--x);
  top: var(--y);
  font-size: 2.5rem;
  color: rgba(245, 158, 11, 0.15);
  animation: float-bob 4s ease-in-out infinite;
  animation-delay: var(--delay);
}

@keyframes float-bob {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(5deg); }
}

.fun-hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-16);
  align-items: center;
  padding: var(--space-16) var(--space-6);
}

.fun-hero-left {
  color: var(--white);
}

.fun-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--gold-300);
  margin-bottom: var(--space-6);
}

.fun-hero-left h1 {
  font-family: var(--font-display);
  font-size: var(--text-5xl);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-6);
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.fun-hero-left p {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-8);
  max-width: 520px;
}

.fun-hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* Hero Right - Card Stack */
.fun-hero-right {
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-card-stack {
  position: relative;
  width: 280px;
  height: 280px;
}

.hero-card {
  position: absolute;
  width: 180px;
  height: 180px;
  border-radius: var(--radius-2xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  font-size: var(--text-3xl);
  color: var(--white);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  animation: card-float-hero 5s ease-in-out infinite;
}

.hero-card i {
  font-size: var(--text-4xl);
}

.hero-card span {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
}

.hero-card-1 {
  top: 0;
  left: 0;
  background: linear-gradient(135deg, rgba(220, 38, 38, 0.6), rgba(185, 28, 28, 0.4));
  animation-delay: 0s;
  z-index: 3;
}

.hero-card-2 {
  top: 40px;
  left: 60px;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.6), rgba(217, 119, 6, 0.4));
  animation-delay: 1.5s;
  z-index: 2;
}

.hero-card-3 {
  top: 80px;
  left: 30px;
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.6), rgba(109, 40, 217, 0.4));
  animation-delay: 3s;
  z-index: 1;
}

@keyframes card-float-hero {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-15px) rotate(2deg); }
}

/* ---------- Stats Overview ---------- */
.stats-overview {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.stat-card {
  background: var(--white);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  text-align: center;
  border: 1px solid var(--gray-100);
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.stat-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--red-100), var(--red-50));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-3);
  font-size: var(--text-2xl);
  color: var(--primary);
}

.stat-value {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--text-muted);
  font-weight: var(--font-medium);
}

/* ---------- Filter Tabs ---------- */
.game-filters {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  margin-bottom: var(--space-10);
  flex-wrap: wrap;
}

.filter-btn {
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  border: 2px solid transparent;
  background: var(--white);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow-sm);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  position: relative;
  overflow: hidden;
}

.filter-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--red-500), var(--red-700));
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 0;
}

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

.filter-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: var(--primary);
}

.filter-btn.active {
  color: #ffffff !important;
  border-color: transparent;
  box-shadow: var(--shadow-red);
  text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.filter-btn.active::before {
  opacity: 1;
}

.filter-btn[data-filter="skill"].active::before {
  background: linear-gradient(135deg, var(--red-500), var(--red-700));
}

.filter-btn[data-filter="skill"].active {
  box-shadow: var(--shadow-red);
}

/* ---------- Game Cards Grid ---------- */
.games-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  perspective: 1200px;
}

/* Individual Game Card */
.game-card-v2 {
  position: relative;
  background: var(--white);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  border: 1px solid var(--gray-100);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.4s ease;
  cursor: pointer;
  text-decoration: none;
  display: block;
  transform-style: preserve-3d;
}

.game-card-v2::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  transition: left 0.6s ease;
  z-index: 3;
  pointer-events: none;
}

.game-card-v2:hover::before {
  left: 150%;
}

.game-card-v2:hover {
  transform: translateY(-12px) scale(1.02);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(185, 28, 28, 0.1);
}

.game-card-v2.hidden {
  display: none;
}

/* Card Top Banner */
.game-card-banner {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.game-card-banner .bg-icon {
  font-size: 6rem;
  opacity: 0.15;
  position: absolute;
  transition: all 0.5s ease;
}

.game-card-v2:hover .bg-icon {
  transform: scale(1.2) rotate(10deg);
  opacity: 0.25;
}

.game-card-banner .main-icon {
  font-size: 3.5rem;
  position: relative;
  z-index: 1;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.15));
}

.game-card-v2:hover .main-icon {
  transform: scale(1.15) translateY(-5px);
}

/* Floating particles inside card */
.card-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.card-particle {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  animation: card-float 3s ease-in-out infinite;
}

@keyframes card-float {
  0%, 100% { transform: translateY(0) scale(1); opacity: 0.3; }
  50% { transform: translateY(-20px) scale(1.5); opacity: 0.8; }
}

/* Card Body */
.game-card-body {
  padding: var(--space-6);
  position: relative;
  z-index: 2;
  background: var(--white);
}

.game-card-tags {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}

.game-tag {
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.game-tag.red {
  background: var(--red-50);
  color: var(--red-700);
}

.game-tag.skill {
  background: var(--gold-50);
  color: var(--gold-700);
}

.game-tag.age {
  background: var(--gray-100);
  color: var(--gray-600);
}

.game-card-body h3 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-2);
  color: var(--text-primary);
  transition: color 0.3s ease;
}

.game-card-v2:hover .game-card-body h3 {
  color: var(--primary);
}

.game-card-body p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

/* Difficulty Stars */
.game-difficulty {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding-top: var(--space-4);
  border-top: 1px solid var(--gray-100);
}

.difficulty-label {
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-weight: var(--font-medium);
}

.difficulty-stars {
  display: flex;
  gap: 3px;
}

.difficulty-stars i {
  font-size: var(--text-xs);
  color: var(--gray-300);
  transition: color 0.3s ease, transform 0.3s ease;
}

.difficulty-stars i.active {
  color: var(--gold-400);
}

.game-card-v2:hover .difficulty-stars i.active {
  animation: star-pop 0.4s ease;
}

@keyframes star-pop {
  0% { transform: scale(1); }
  50% { transform: scale(1.4); }
  100% { transform: scale(1); }
}

/* Play Button Overlay */
.game-card-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(255,255,255,0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  color: var(--primary);
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
  z-index: 4;
}

.game-card-v2:hover .game-card-play {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

/* ---------- Achievements Section ---------- */
.achievements-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.achievement-item {
  text-align: center;
  padding: var(--space-5) var(--space-4);
  background: var(--white);
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-100);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.achievement-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold-400), var(--gold-600));
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.achievement-item:hover::before {
  transform: scaleX(1);
}

.achievement-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.achievement-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  margin: 0 auto var(--space-3);
  position: relative;
}

.achievement-icon.locked {
  background: var(--gray-100);
  color: var(--gray-400);
}

.achievement-icon.unlocked {
  background: linear-gradient(135deg, var(--gold-400), var(--gold-600));
  color: var(--white);
  box-shadow: var(--shadow-gold);
}

.achievement-item h4 {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-1);
  color: var(--text-primary);
}

.achievement-item p {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

/* ---------- Leaderboard Mini ---------- */
.leaderboard-mini {
  background: var(--white);
  border-radius: var(--radius-2xl);
  border: 1px solid var(--gray-100);
  overflow: hidden;
}

.leaderboard-header {
  padding: var(--space-5) var(--space-6);
  background: linear-gradient(135deg, var(--gray-50), var(--white));
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.leaderboard-header h3 {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.leaderboard-header h3 i {
  color: var(--gold-500);
}

.leaderboard-list {
  padding: var(--space-2);
}

.leaderboard-row {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  transition: background 0.2s ease;
}

.leaderboard-row:hover {
  background: var(--gray-50);
}

.leaderboard-rank {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
  flex-shrink: 0;
}

.leaderboard-rank.gold {
  background: linear-gradient(135deg, #fef3c7, #fde68a);
  color: #b45309;
}

.leaderboard-rank.silver {
  background: linear-gradient(135deg, #f3f4f6, #e5e7eb);
  color: #4b5563;
}

.leaderboard-rank.bronze {
  background: linear-gradient(135deg, #fff7ed, #fed7aa);
  color: #c2410c;
}

.leaderboard-rank.normal {
  background: var(--gray-100);
  color: var(--gray-500);
}

.leaderboard-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--red-100), var(--red-200));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
  color: var(--red-700);
  flex-shrink: 0;
}

.leaderboard-info {
  flex: 1;
  min-width: 0;
}

.leaderboard-info h4 {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.leaderboard-info p {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.leaderboard-score {
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
  color: var(--gold-600);
  flex-shrink: 0;
}

/* ---------- 3D Tilt Effect Support ---------- */
.tilt-card {
  transform-style: preserve-3d;
  will-change: transform;
}

.tilt-card .tilt-inner {
  transform: translateZ(30px);
}

/* ---------- Learning Path ---------- */
.learning-path-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.learning-path-card {
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-2xl);
  padding: var(--space-6);
  text-align: center;
  transition: all 0.3s ease;
  cursor: default;
}

.learning-path-card:hover {
  background: rgba(255,255,255,0.12);
  transform: translateY(-4px);
}

.learning-path-step {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gold-400), var(--gold-600));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
  font-size: var(--text-2xl);
  color: var(--white);
  box-shadow: var(--shadow-gold);
}

.learning-path-card h3 {
  color: var(--white);
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-2);
}

.learning-path-card p {
  color: rgba(255,255,255,0.7);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

/* ---------- Section Enhanced ---------- */
.section-fun {
  padding: var(--space-20) 0;
}

/* ---------- Entrance Animations for Cards ---------- */
@keyframes card-enter {
  from {
    opacity: 0;
    transform: translateY(40px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.game-card-v2.enter {
  animation: card-enter 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .games-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .achievements-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .stats-overview {
    grid-template-columns: repeat(2, 1fr);
  }

  .fun-hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-10);
  }

  .fun-hero-left p {
    margin-left: auto;
    margin-right: auto;
  }

  .fun-hero-actions {
    justify-content: center;
  }

  .fun-hero-right {
    display: none;
  }

  .learning-path-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .games-grid {
    grid-template-columns: 1fr;
  }

  .game-filters {
    gap: var(--space-2);
  }

  .filter-btn {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
  }

  .achievements-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
  }

  .stats-overview {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }

  .fun-hero-left h1 {
    font-size: var(--text-4xl);
  }

  .learning-path-grid {
    grid-template-columns: 1fr;
  }
}