:root {
  --bg-cream: #fffdf5;
  --sunny-yellow: #ffe600;
  --electric-purple: #782ae8;
  --bubble-pink: #ff4794;
  --sky-blue: #00d2ff;
  --mint-green: #00f29b;
  --text-dark: #19102c;
  --text-muted: #5e5672;
  --border-dark: #19102c;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-cream);
  color: var(--text-dark);
  font-family: 'Plus Jakarta Sans', sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

h1, h2, h3, h4, .brand-font {
  font-family: 'Fredoka', cursive, sans-serif;
  letter-spacing: -0.5px;
}

/* Dotted Background */
.bg-dots {
  position: fixed;
  inset: 0;
  background-image: radial-gradient(#19102c 1.4px, transparent 1.4px);
  background-size: 26px 26px;
  opacity: 0.08;
  z-index: 0;
  pointer-events: none;
}

/* Top Announcement Bar */
.banner {
  background: var(--sunny-yellow);
  color: var(--text-dark);
  border-bottom: 3px solid var(--border-dark);
  text-align: center;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  font-weight: 800;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.8rem;
}

.banner-badge {
  background: var(--text-dark);
  color: white;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
  text-transform: uppercase;
}

/* Navigation */
header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  background: rgba(255, 253, 245, 0.92);
  border-bottom: 3px solid var(--border-dark);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--text-dark);
  background: none;
  border: none;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
}

.logo-badge {
  background: var(--bubble-pink);
  color: white;
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  font-size: 0.9rem;
  border: 2px solid var(--border-dark);
  transform: rotate(-3deg);
}

.nav-links {
  display: flex;
  gap: 1.8rem;
  list-style: none;
}

.nav-link-btn {
  background: none;
  border: none;
  color: var(--text-dark);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: color 0.15s ease;
}

.nav-link-btn:hover {
  color: var(--electric-purple);
}

/* Playful Pop Buttons */
.pop-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 2.2rem;
  border-radius: 16px;
  font-family: 'Fredoka', cursive, sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-dark);
  background: var(--mint-green);
  border: 3px solid var(--border-dark);
  cursor: pointer;
  box-shadow: 4px 4px 0px var(--border-dark);
  transition: all 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  user-select: none;
}

.pop-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0px var(--border-dark);
}

.pop-btn:active {
  transform: translate(2px, 2px);
  box-shadow: 0px 0px 0px var(--border-dark);
}

.pop-btn-sm {
  padding: 0.55rem 1.3rem;
  font-size: 0.95rem;
  border-radius: 12px;
  box-shadow: 3px 3px 0px var(--border-dark);
}

.pop-btn-sm:hover {
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0px var(--border-dark);
}

.pop-btn-pink { background: var(--bubble-pink); color: #fff; }
.pop-btn-yellow { background: var(--sunny-yellow); color: var(--text-dark); }
.pop-btn-purple { background: var(--electric-purple); color: #fff; }
.pop-btn-blue { background: var(--sky-blue); color: var(--text-dark); }

/* Layout Containers */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 10;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 4rem 0 3rem;
  max-width: 900px;
  margin: 0 auto;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: #ffffff;
  color: var(--text-dark);
  font-weight: 800;
  font-size: 0.9rem;
  padding: 0.4rem 1.2rem;
  border-radius: 9999px;
  border: 2px solid var(--border-dark);
  box-shadow: 3px 3px 0px var(--border-dark);
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: 4.2rem;
  font-weight: 700;
  line-height: 1.05;
  margin-bottom: 1.5rem;
}

.highlight-purple {
  color: var(--electric-purple);
  text-decoration: underline wavy var(--bubble-pink) 5px;
}

.highlight-yellow {
  background: var(--sunny-yellow);
  padding: 0 0.3rem;
  border-radius: 8px;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 2.5rem;
  font-weight: 600;
}

.hero-ctas {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Stats Grid */
.stats-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.2rem;
  margin: 2rem 0 5rem;
}

.stat-card {
  background: #ffffff;
  border: 3px solid var(--border-dark);
  border-radius: 20px;
  padding: 1.6rem 1.2rem;
  text-align: center;
  box-shadow: 5px 5px 0px var(--border-dark);
}

.stat-number {
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--electric-purple);
  display: block;
  margin-bottom: 0.2rem;
}

.stat-label {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-muted);
}

/* Why Us Section */
.why-us {
  margin-bottom: 6rem;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  text-align: center;
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 1.1rem;
  margin-bottom: 3rem;
}

.perks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.8rem;
}

.perk-card {
  background: #ffffff;
  border: 3px solid var(--border-dark);
  border-radius: 22px;
  padding: 2rem;
  box-shadow: 6px 6px 0px var(--border-dark);
}

.perk-card.pink { background: #ffe9f2; }
.perk-card.yellow { background: #fffbe0; }
.perk-card.blue { background: #e5f9ff; }

.perk-icon {
  font-size: 2.6rem;
  margin-bottom: 1rem;
  display: inline-block;
}

.perk-card h3 {
  font-size: 1.4rem;
  margin-bottom: 0.6rem;
}

.perk-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
}

/* Courses Section */
.courses-section {
  margin-bottom: 6rem;
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.course-card {
  background: #ffffff;
  border: 3px solid var(--border-dark);
  border-radius: 24px;
  padding: 1.6rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 6px 6px 0px var(--border-dark);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.course-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 9px 9px 0px var(--border-dark);
}

.card-banner {
  height: 120px;
  border-radius: 16px;
  border: 2px solid var(--border-dark);
  margin-bottom: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.2rem;
}

.card-banner.robot { background: #ffd1dc; }
.card-banner.space { background: #b8f2e6; }
.card-banner.physics { background: var(--sunny-yellow); }
.card-banner.game { background: #d7c0ff; }
.card-banner.crypto { background: #c5f467; }
.card-banner.dino { background: #ffdfba; }

.meta-pills {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 0.8rem;
}

.pill {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: 8px;
  border: 1.5px solid var(--border-dark);
  background: #ffffff;
}

.course-card h3 {
  font-size: 1.35rem;
  margin-bottom: 0.5rem;
}

.course-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 2px dashed #e2e0ea;
  padding-top: 1rem;
}

/* Daily Brain Challenge */
.challenge-box {
  background: var(--electric-purple);
  color: white;
  border: 3px solid var(--border-dark);
  border-radius: 28px;
  padding: 3rem 2rem;
  box-shadow: 8px 8px 0px var(--border-dark);
  margin-bottom: 6rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.challenge-text h3 {
  font-size: 2.2rem;
  margin-bottom: 0.6rem;
}

.challenge-text p {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 550px;
}

/* Testimonials */
.reviews-section {
  margin-bottom: 6rem;
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.review-card {
  background: white;
  border: 3px solid var(--border-dark);
  border-radius: 20px;
  padding: 1.8rem;
  box-shadow: 5px 5px 0px var(--border-dark);
}

.review-stars {
  color: var(--sunny-yellow);
  font-size: 1.2rem;
  margin-bottom: 0.8rem;
  text-shadow: 1px 1px 0 #19102c;
}

.review-text {
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.review-author {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 700;
}

/* FAQ Section */
.faq-section {
  max-width: 850px;
  margin: 0 auto 6rem;
}

.faq-item {
  background: white;
  border: 3px solid var(--border-dark);
  border-radius: 16px;
  margin-bottom: 1rem;
  box-shadow: 4px 4px 0px var(--border-dark);
  overflow: hidden;
}

.faq-question {
  padding: 1.2rem 1.5rem;
  font-weight: 700;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.faq-answer {
  padding: 0 1.5rem 1.2rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

.faq-toggle {
  font-size: 1.4rem;
  transition: transform 0.2s ease;
}

.faq-item.active .faq-toggle {
  transform: rotate(45deg);
}

/* Bottom CTA Card */
.cta-card {
  background: var(--sunny-yellow);
  border: 4px solid var(--border-dark);
  border-radius: 30px;
  padding: 4rem 2rem;
  text-align: center;
  box-shadow: 10px 10px 0px var(--border-dark);
  margin-bottom: 5rem;
}

.cta-card h2 {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.cta-card p {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-dark);
  max-width: 600px;
  margin: 0 auto 2.2rem;
}

/* Footer */
footer {
  border-top: 3px solid var(--border-dark);
  background: white;
  padding: 3rem 1.5rem;
  text-align: center;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.footer-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-link-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  transition: color 0.15s ease;
}

.footer-link-btn:hover {
  color: var(--electric-purple);
}

/* Popup Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(25, 16, 44, 0.65);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

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

.modal-content {
  background: #ffffff;
  border: 4px solid var(--border-dark);
  border-radius: 28px;
  padding: 2.5rem 2rem;
  max-width: 440px;
  width: 90%;
  text-align: center;
  box-shadow: 10px 10px 0px var(--border-dark);
  transform: scale(0.9);
  transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.modal-overlay.active .modal-content {
  transform: scale(1);
}

.modal-emoji {
  font-size: 3.5rem;
  margin-bottom: 0.8rem;
  display: inline-block;
  animation: wiggle 0.8s infinite alternate ease-in-out;
}

@keyframes wiggle {
  from { transform: rotate(-8deg); }
  to { transform: rotate(8deg); }
}

.modal-title {
  font-size: 1.8rem;
  margin-bottom: 0.5rem;
}

.modal-desc {
  color: var(--text-muted);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1.8rem;
}

@media (max-width: 768px) {
  .hero h1 { font-size: 2.8rem; }
  .cta-card h2 { font-size: 2.2rem; }
  .nav-links { display: none; }
  .challenge-box { text-align: center; justify-content: center; }
}