/* CSS Styles for AI Kids Academy */
:root {
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-glow: rgba(99, 102, 241, 0.25);
  --secondary: #06b6d4;
  --accent: #f43f5e;
  --bg-dark: #090d16;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(99, 102, 241, 0.5);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-sub: #64748b;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  background: radial-gradient(circle at 50% 0%, #1e1b4b 0%, #090d16 55%, #05070c 100%);
  min-height: 100vh;
}

/* Typography Helpers */
h1, h2, h3, h4 {
  font-family: 'Outfit', sans-serif;
  letter-spacing: -0.02em;
  color: var(--text-main);
  line-height: 1.2;
}

p {
  color: var(--text-muted);
}

.gradient-text {
  background: linear-gradient(135deg, #a5b4fc 0%, #818cf8 40%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Containers */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.max-w-md {
  max-width: 760px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  background: rgba(9, 13, 22, 0.8);
  border-bottom: 1px solid var(--border);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-size: 1.35rem;
  font-weight: 800;
  font-family: 'Outfit', sans-serif;
  color: var(--text-main);
}

.logo-icon {
  font-size: 1.7rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--text-main);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-main);
  margin: 5px 0;
  transition: var(--transition);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
  color: #fff;
  box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--primary);
  background: var(--primary-glow);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1.05rem;
  border-radius: 12px;
}

.btn-sm {
  padding: 9px 18px;
  font-size: 0.85rem;
}

.full-width {
  width: 100%;
}

/* Hero Section */
.hero-section {
  padding: 100px 0 80px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #a5b4fc;
  margin-bottom: 24px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #38bdf8;
  box-shadow: 0 0 10px #38bdf8;
}

.hero-title {
  font-size: clamp(2.5rem, 5.5vw, 4.2rem);
  font-weight: 900;
  margin-bottom: 24px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2vw, 1.25rem);
  max-width: 680px;
  margin: 0 auto 40px;
  color: var(--text-muted);
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 960px;
  margin: 0 auto;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 24px 16px;
  border-radius: var(--radius-md);
  backdrop-filter: blur(10px);
}

.stat-num {
  font-size: 1.8rem;
  font-weight: 800;
  font-family: 'Outfit', sans-serif;
  color: #38bdf8;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-sub);
}

/* Sections */
.section {
  padding: 100px 0;
  border-top: 1px solid var(--border);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  font-weight: 700;
  color: var(--secondary);
  display: inline-block;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  margin-bottom: 16px;
}

.section-desc {
  max-width: 620px;
  margin: 0 auto;
  font-size: 1.05rem;
}

/* Grid */
.grid {
  display: grid;
  gap: 28px;
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

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

/* Feature Cards */
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 36px 28px;
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(99, 102, 241, 0.3);
  transform: translateY(-4px);
}

.feature-icon {
  font-size: 2.2rem;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
}

/* Program Cards */
.program-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 40px 32px;
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
}

.program-card:hover {
  border-color: rgba(99, 102, 241, 0.4);
  transform: translateY(-4px);
}

.program-card.featured {
  background: rgba(99, 102, 241, 0.05);
  border: 2px solid var(--primary);
  box-shadow: 0 10px 40px rgba(99, 102, 241, 0.15);
}

.featured-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #6366f1, #38bdf8);
  color: #fff;
  padding: 4px 14px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.program-level {
  font-size: 0.85rem;
  color: var(--secondary);
  font-weight: 600;
  margin-bottom: 6px;
}

.program-age {
  font-size: 1.6rem;
  font-weight: 800;
  font-family: 'Outfit', sans-serif;
  color: var(--text-main);
  margin-bottom: 4px;
}

.program-title {
  font-size: 1.3rem;
  margin-bottom: 16px;
}

.program-desc {
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.program-list {
  list-style: none;
  margin-bottom: 32px;
  flex-grow: 1;
}

.program-list li {
  margin-bottom: 12px;
  font-size: 0.9rem;
  color: #cbd5e1;
}

/* Timeline */
.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.timeline-step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 32px 24px;
  border-radius: var(--radius-md);
  position: relative;
}

.step-number {
  font-size: 2.2rem;
  font-family: 'Outfit', sans-serif;
  font-weight: 900;
  color: rgba(99, 102, 241, 0.3);
  margin-bottom: 12px;
}

.step-content h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
}

.step-content p {
  font-size: 0.9rem;
}

/* Showcase */
.showcase-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 32px;
  border-radius: var(--radius-md);
}

.showcase-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
  text-transform: uppercase;
}

.showcase-card h3 {
  font-size: 1.35rem;
  margin-bottom: 12px;
}

/* Accordion */
.accordion {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.accordion-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.accordion-header {
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  font-family: 'Plus Jakarta Sans', sans-serif;
}

.accordion-arrow {
  font-size: 0.75rem;
  transition: transform 0.25s ease;
  color: var(--text-muted);
}

.accordion-body {
  padding: 0 24px 20px;
  display: none;
  font-size: 0.95rem;
}

.accordion-item.active .accordion-body {
  display: block;
}

.accordion-item.active .accordion-arrow {
  transform: rotate(180deg);
}

/* Contact / Form */
.contact-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
}

.contact-card .section-title {
  margin-bottom: 12px;
}

.contact-card .section-desc {
  margin-bottom: 32px;
}

.contact-form {
  text-align: left;
}

.form-group {
  margin-bottom: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-muted);
}

input, select, textarea {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  background: rgba(255, 255, 255, 0.07);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

select option {
  background: var(--bg-dark);
  color: var(--text-main);
}

.form-feedback {
  margin-top: 16px;
  padding: 12px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  display: none;
  text-align: center;
}

.form-feedback.success {
  display: block;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #34d399;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 60px 0 40px;
  background: rgba(5, 7, 12, 0.9);
}

.footer-content {
  text-align: center;
}

.footer-brand {
  margin-bottom: 24px;
}

.footer-brand .brand-logo {
  justify-content: center;
  margin-bottom: 12px;
}

.footer-domains {
  margin-bottom: 32px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: inline-block;
}

.footer-domains h4 {
  font-size: 0.85rem;
  color: var(--secondary);
  margin-bottom: 6px;
}

.footer-domains p {
  font-size: 0.85rem;
  letter-spacing: 0.05em;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  font-size: 0.85rem;
  color: var(--text-sub);
}

/* Responsive */
@media (max-width: 992px) {
  .grid-3 {
    grid-template-columns: 1fr;
  }
  .timeline {
    grid-template-columns: 1fr 1fr;
  }
  .hero-stats {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .site-header .nav-links {
    display: none;
    position: absolute;
    top: 76px;
    left: 0;
    width: 100%;
    background: #090d16;
    flex-direction: column;
    padding: 24px;
    border-bottom: 1px solid var(--border);
  }
  .nav-links.active {
    display: flex;
  }
  .mobile-toggle {
    display: block;
  }
  .grid-2 {
    grid-template-columns: 1fr;
  }
  .timeline {
    grid-template-columns: 1fr;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .contact-card {
    padding: 28px 20px;
  }
}