/* ============================================
   TakeawAI — Main Stylesheet
   Brand: Fun, playful, approachable AI education
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
  --teal: #00B4D8;
  --teal-dark: #0096B4;
  --teal-light: #B8E8F0;
  --navy: #1A2E44;
  --navy-light: #243650;
  --coral: #FF6B6B;
  --coral-dark: #E85555;
  --yellow: #C5A059;
  --yellow-light: #F5ECD8;
  --light-bg: #E8F4F8;
  --white: #FFFFFF;
  --gray-50: #F8FAFC;
  --gray-100: #F1F5F9;
  --gray-200: #E2E8F0;
  --gray-300: #CBD5E1;
  --gray-400: #94A3B8;
  --gray-500: #64748B;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1E293B;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --shadow-xl: 0 12px 40px rgba(0,0,0,0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition: all 0.3s ease;
}

/* ---------- Personality & Decorations ---------- */

/* Hand-drawn squiggle underline for emphasis */
.squiggle {
  position: relative;
  display: inline;
}
.squiggle::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  right: 0;
  height: 8px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 120 8'%3E%3Cpath d='M0 4 Q10 0 20 4 Q30 8 40 4 Q50 0 60 4 Q70 8 80 4 Q90 0 100 4 Q110 8 120 4' fill='none' stroke='%2300B4D8' stroke-width='2.5' stroke-linecap='round'/%3E%3C/svg%3E") repeat-x;
  background-size: 60px 8px;
}

/* Coral version */
.squiggle-coral::after {
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 120 8'%3E%3Cpath d='M0 4 Q10 0 20 4 Q30 8 40 4 Q50 0 60 4 Q70 8 80 4 Q90 0 100 4 Q110 8 120 4' fill='none' stroke='%23FF6B6B' stroke-width='2.5' stroke-linecap='round'/%3E%3C/svg%3E") repeat-x;
  background-size: 60px 8px;
}

/* Yellow version */
.squiggle-yellow::after {
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 120 8'%3E%3Cpath d='M0 4 Q10 0 20 4 Q30 8 40 4 Q50 0 60 4 Q70 8 80 4 Q90 0 100 4 Q110 8 120 4' fill='none' stroke='%23C5A059' stroke-width='2.5' stroke-linecap='round'/%3E%3C/svg%3E") repeat-x;
  background-size: 60px 8px;
}

/* Wavy section divider */
.wave-divider {
  position: relative;
}
.wave-divider::after {
  content: '';
  display: block;
  width: 100%;
  height: 60px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 60'%3E%3Cpath d='M0 30 Q180 0 360 30 Q540 60 720 30 Q900 0 1080 30 Q1260 60 1440 30 V60 H0Z' fill='%23F0F9FF'/%3E%3C/svg%3E") no-repeat;
  background-size: cover;
}

/* Inverted wave (light to white) */
.wave-divider-up::before {
  content: '';
  display: block;
  width: 100%;
  height: 60px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 60'%3E%3Cpath d='M0 30 Q180 60 360 30 Q540 0 720 30 Q900 60 1080 30 Q1260 0 1440 30 V0 H0Z' fill='%23F0F9FF'/%3E%3C/svg%3E") no-repeat;
  background-size: cover;
}

/* Floating decorative dots */
.deco-dots {
  position: relative;
}
.deco-dots::before {
  content: '';
  position: absolute;
  width: 120px;
  height: 120px;
  top: -20px;
  right: -20px;
  opacity: 0.12;
  background: radial-gradient(circle, var(--teal) 2px, transparent 2px);
  background-size: 16px 16px;
  pointer-events: none;
  z-index: 0;
}

/* Corner accent for cards */
.card-accent-teal { border-top: 3px solid var(--teal); }
.card-accent-coral { border-top: 3px solid var(--coral); }
.card-accent-yellow { border-top: 3px solid var(--yellow); }
.card-accent-navy { border-top: 3px solid var(--navy); }


/* Speech bubble effect */
.speech-bubble {
  position: relative;
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
}
.speech-bubble::after {
  content: '';
  position: absolute;
  bottom: -12px;
  left: 32px;
  width: 24px;
  height: 24px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-top: none;
  border-left: none;
  transform: rotate(45deg);
}


/* Floating background shapes for hero */
.hero-home::before {
  content: '';
  position: absolute;
  top: 10%;
  right: 5%;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,180,216,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.hero-home::after {
  content: '';
  position: absolute;
  bottom: 5%;
  right: 15%;
  width: 200px;
  height: 200px;
  border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  background: rgba(255,107,107,0.04);
  pointer-events: none;
}

/* Playful dashed border for special callouts */
.callout-dashed {
  border: 2px dashed var(--teal-light);
  border-radius: var(--radius-md);
  padding: 28px;
  background: var(--white);
  position: relative;
}

/* Emoji marker for lists */
.emoji-list {
  list-style: none;
}
.emoji-list li {
  padding: 8px 0;
  padding-left: 32px;
  position: relative;
  color: var(--gray-600);
}
.emoji-list li::before {
  position: absolute;
  left: 0;
  top: 8px;
}

/* Colourful underline on hover for links */
.fun-link {
  position: relative;
  text-decoration: none;
}
.fun-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--teal), var(--coral), var(--yellow));
  border-radius: 2px;
  transition: width 0.3s ease;
}
.fun-link:hover::after {
  width: 100%;
}

/* Gradient text effect for special headings */
.gradient-text {
  background: linear-gradient(135deg, var(--teal) 0%, var(--coral) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Confetti-style background pattern (subtle) */
.bg-confetti {
  background-color: var(--white);
  background-image:
    radial-gradient(circle at 10% 20%, rgba(0,180,216,0.05) 0%, transparent 50%),
    radial-gradient(circle at 90% 80%, rgba(255,107,107,0.04) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(255,217,61,0.03) 0%, transparent 50%);
}

/* Notebook paper effect for sample content */
.notebook-paper {
  background: var(--white);
  background-image: repeating-linear-gradient(
    transparent, transparent 31px, #E8ECF0 31px, #E8ECF0 32px
  );
  border-left: 3px solid var(--coral);
  padding: 20px 20px 20px 28px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  font-size: 0.95rem;
  line-height: 32px;
}

/* Sticky note effect */
.sticky-note {
  background: var(--yellow-light);
  padding: 24px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}
.sticky-note-teal {
  background: #D4F1F7;
}
.sticky-note-coral {
  background: #FFE4E4;
}

/* Pulse animation for CTAs */
@keyframes gentle-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0,180,216,0.3); }
  50% { box-shadow: 0 0 0 8px rgba(0,180,216,0); }
}
.btn-pulse {
  animation: gentle-pulse 3s infinite;
}

/* Typing cursor effect */
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}
.cursor-blink::after {
  content: '|';
  color: var(--teal);
  animation: blink 1s infinite;
  margin-left: 2px;
}

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

html { scroll-behavior: smooth; font-size: 18px; }

body {
  font-family: 'Open Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--gray-700);
  line-height: 1.8;
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5 {
  font-family: 'Nunito', 'Open Sans', sans-serif;
  color: var(--navy);
  line-height: 1.45;
  font-weight: 800;
}

h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.7rem, 4.5vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 3vw, 1.6rem); }

a { color: var(--teal); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--teal-dark); }

img { max-width: 100%; height: auto; display: block; }

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

/* ---------- Utility ---------- */
.text-center { text-align: center; }
.text-teal { color: var(--teal); }
.text-coral { color: var(--coral); }
.text-navy { color: var(--navy); }
.text-white { color: var(--white); }
.bg-light { background: var(--light-bg); }
.bg-navy { background: var(--navy); }
.bg-white { background: var(--white); }

.highlight {
  background: linear-gradient(120deg, var(--yellow-light) 0%, var(--yellow-light) 100%);
  background-repeat: no-repeat;
  background-size: 100% 40%;
  background-position: 0 85%;
  padding: 0 4px;
}

.badge {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.badge-teal { background: var(--teal-light); color: var(--teal-dark); }
.badge-coral { background: #FFE0E0; color: var(--coral-dark); }
.badge-yellow { background: var(--yellow-light); color: #B8860B; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-family: 'Nunito', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--teal);
  color: var(--white);
  border-color: var(--teal);
}
.btn-primary:hover {
  background: var(--teal-dark);
  border-color: var(--teal-dark);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-coral {
  background: var(--coral);
  color: var(--white);
  border-color: var(--coral);
}
.btn-coral:hover {
  background: var(--coral-dark);
  border-color: var(--coral-dark);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--teal);
  border-color: var(--teal);
}
.btn-outline:hover {
  background: var(--teal);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-outline-white {
  background: transparent;
  color: var(--white);
  border-color: var(--white);
}
.btn-outline-white:hover {
  background: var(--white);
  color: var(--navy);
  transform: translateY(-2px);
}

.btn-white {
  background: var(--white);
  color: var(--navy);
  border-color: var(--white);
}
.btn-white:hover {
  background: var(--gray-100);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-lg { padding: 18px 40px; font-size: 1.1rem; }
.btn-sm { padding: 10px 24px; font-size: 0.9rem; }

.btn-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ---------- Navigation ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
  transition: var(--transition);
}

.navbar.scrolled {
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.nav-logo {
  font-family: 'Nunito', sans-serif;
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--navy);
  text-decoration: none;
}
.nav-logo span { color: var(--teal); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--gray-600);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: var(--transition);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--teal);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--teal);
  transition: width 0.3s ease;
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-cta {
  padding: 10px 24px !important;
  border-radius: 50px !important;
  background: var(--teal) !important;
  color: var(--white) !important;
}
.nav-cta:hover {
  background: var(--teal-dark) !important;
  transform: translateY(-1px);
}
.nav-cta::after { display: none !important; }

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--navy);
  margin: 6px 0;
  transition: var(--transition);
}

/* ---------- Hero Sections ---------- */
.hero {
  padding: 140px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero-home {
  background: linear-gradient(135deg, #f0f9ff 0%, #e8f4f8 40%, #fdf0d5 100%);
  padding: 160px 0 100px;
}

.hero-content {
  max-width: 680px;
}

.hero h1 {
  margin-bottom: 20px;
}

.hero p {
  font-size: 1.2rem;
  color: var(--gray-500);
  margin-bottom: 32px;
  max-width: 560px;
}

.hero .btn-group { margin-top: 8px; }

/* Floating elements decoration */
.hero-decoration {
  position: absolute;
  right: -40px;
  top: 50%;
  transform: translateY(-50%);
  width: 500px;
  height: 500px;
  opacity: 0.08;
  pointer-events: none;
}

/* Hero with dark bg */
.hero-dark {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  color: var(--white);
}
.hero-dark h1, .hero-dark h2 { color: var(--white); }
.hero-dark p { color: var(--gray-300); }

/* ---------- Sections ---------- */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.section-header p {
  margin-top: 12px;
  font-size: 1.1rem;
  color: var(--gray-500);
}

.section-header .badge { margin-bottom: 12px; }

/* ---------- Cards ---------- */
.card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  transition: var(--transition);
}
.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

/* Alternate card accent colours automatically */
.grid-2 .card:nth-child(1),
.grid-4 .card:nth-child(1) { border-top: 3px solid var(--teal); }
.grid-2 .card:nth-child(2),
.grid-4 .card:nth-child(2) { border-top: 3px solid var(--coral); }
.grid-2 .card:nth-child(3),
.grid-4 .card:nth-child(3) { border-top: 3px solid var(--yellow); }
.grid-2 .card:nth-child(4),
.grid-4 .card:nth-child(4) { border-top: 3px solid var(--navy); }

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 16px;
}
.card-icon-teal { background: var(--teal-light); color: var(--teal-dark); }
.card-icon-coral { background: #FFE0E0; color: var(--coral); }
.card-icon-yellow { background: var(--yellow-light); color: #B8860B; }
.card-icon-navy { background: #E2E8F0; color: var(--navy); }

.card h3 { margin-bottom: 8px; }
.card p { color: var(--gray-500); font-size: 0.95rem; }

/* ---------- Grid Layouts ---------- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

/* ---------- How It Works ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  position: relative;
}

.step {
  text-align: center;
  position: relative;
}

.step-number {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--teal);
  color: var(--white);
  font-family: 'Nunito', sans-serif;
  font-size: 1.5rem;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  position: relative;
  z-index: 2;
}

.step:nth-child(1) .step-number { background: var(--teal); }
.step:nth-child(2) .step-number { background: var(--coral); }
.step:nth-child(3) .step-number { background: var(--navy); }

.step h3 { margin-bottom: 8px; }
.step p { color: var(--gray-500); font-size: 0.95rem; }

/* connector line between steps */
.steps::before {
  content: '';
  position: absolute;
  top: 32px;
  left: 20%;
  right: 20%;
  height: 2px;
  background: var(--teal-light);
  z-index: 1;
}

/* ---------- Pricing Cards ---------- */
.pricing-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  border: 2px solid var(--gray-200);
  transition: var(--transition);
  position: relative;
}

.pricing-card:hover {
  border-color: var(--teal);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.pricing-card.featured {
  border-color: var(--teal);
  box-shadow: var(--shadow-lg);
}

.pricing-card.featured::before {
  content: 'Most Popular';
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--coral);
  color: var(--white);
  padding: 4px 20px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 700;
  font-family: 'Nunito', sans-serif;
}

.pricing-card h3 { margin-bottom: 8px; }

.pricing-price {
  font-family: 'Nunito', sans-serif;
  font-size: 3rem;
  font-weight: 900;
  color: var(--navy);
  margin: 16px 0 4px;
}
.pricing-price span { font-size: 1rem; color: var(--gray-400); font-weight: 600; }

.pricing-period {
  color: var(--gray-400);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.pricing-features {
  list-style: none;
  text-align: left;
  margin-bottom: 32px;
}
.pricing-features li {
  padding: 8px 0;
  color: var(--gray-600);
  font-size: 0.95rem;
  display: flex;
  align-items: start;
  gap: 10px;
}
.pricing-features li::before {
  content: '\2713';
  color: var(--teal);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ---------- Testimonials ---------- */
.testimonial {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
}

.testimonial-rating {
  color: var(--yellow);
  margin-bottom: 12px;
  font-size: 0.95rem;
}

.testimonial-text {
  font-size: 1.05rem;
  color: var(--gray-600);
  font-style: italic;
  margin-bottom: 20px;
  line-height: 1.8;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--teal-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--teal-dark);
  font-family: 'Nunito', sans-serif;
}

.testimonial-name { font-weight: 700; color: var(--navy); }
.testimonial-role { font-size: 0.85rem; color: var(--gray-400); }

/* ---------- FAQ ---------- */
.faq-item {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  padding: 20px 24px;
  font-family: 'Nunito', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--navy);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--white);
  border: none;
  width: 100%;
  text-align: left;
  transition: var(--transition);
}
.faq-question:hover { background: var(--gray-50); }

.faq-question::after {
  content: '+';
  font-size: 1.4rem;
  color: var(--teal);
  font-weight: 300;
  transition: var(--transition);
  flex-shrink: 0;
  margin-left: 16px;
}
.faq-item.open .faq-question::after {
  content: '\2212';
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-item.open .faq-answer {
  max-height: 500px;
}

.faq-answer p {
  padding: 0 24px 20px;
  color: var(--gray-500);
  line-height: 1.8;
}

/* ---------- Newsletter CTA ---------- */
.cta-section {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section h2 { color: var(--white); margin-bottom: 12px; }
.cta-section p { color: var(--gray-300); margin-bottom: 32px; font-size: 1.1rem; }

.cta-form {
  display: flex;
  gap: 12px;
  max-width: 480px;
  margin: 0 auto;
}

.cta-form input {
  flex: 1;
  padding: 14px 20px;
  border-radius: 50px;
  border: 2px solid transparent;
  font-size: 1rem;
  font-family: 'Open Sans', sans-serif;
  outline: none;
  transition: var(--transition);
}
.cta-form input:focus {
  border-color: var(--teal);
}

/* Decorative blobs */
.cta-section::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(0, 180, 216, 0.08);
}
.cta-section::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -80px;
  width: 250px;
  height: 250px;
  border-radius: 50%;
  background: rgba(255, 107, 107, 0.06);
}

/* ---------- Footer ---------- */
.footer {
  background: var(--gray-800);
  color: var(--gray-400);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .nav-logo {
  color: var(--white);
}

.footer-brand p {
  margin-top: 12px;
  font-size: 0.9rem;
  line-height: 1.7;
}

.footer h4 {
  color: var(--white);
  font-size: 0.95rem;
  margin-bottom: 16px;
  font-weight: 700;
}

.footer-links {
  list-style: none;
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  color: var(--gray-400);
  font-size: 0.9rem;
  transition: var(--transition);
}
.footer-links a:hover { color: var(--teal); }

.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}
.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gray-700);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-400);
  transition: var(--transition);
  font-size: 1.1rem;
}
.footer-social a:hover {
  background: var(--teal);
  color: var(--white);
}

.footer-bottom {
  border-top: 1px solid var(--gray-700);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}

.footer-bottom a { color: var(--gray-400); }
.footer-bottom a:hover { color: var(--teal); }
.footer-tagline {
  font-family: 'Nunito', sans-serif;
  font-weight: 700;
  font-style: italic;
  color: var(--teal-light);
  font-size: 0.95rem;
  margin-top: 4px;
}

/* ---------- Class Preview Timeline ---------- */
.class-preview-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  max-width: 700px;
  margin: 0 auto;
}
.preview-step {
  display: flex;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--gray-200);
}
.preview-step:last-child {
  border-bottom: none;
}
.preview-time {
  flex-shrink: 0;
  width: 80px;
  font-family: 'Nunito', sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--teal);
  padding-top: 2px;
}
.preview-detail h4 {
  font-family: 'Nunito', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--navy);
  margin: 0 0 6px 0;
}
.preview-detail p {
  margin: 0;
  color: var(--gray-600);
  line-height: 1.6;
}
@media (max-width: 768px) {
  .preview-step {
    flex-direction: column;
    gap: 4px;
  }
  .preview-time {
    width: auto;
  }
}

/* ---------- Blog Cards ---------- */
.blog-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  transition: var(--transition);
}
.blog-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.blog-card-img {
  height: 200px;
  background: linear-gradient(135deg, var(--teal-light), var(--light-bg));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}
.blog-card-body { padding: 24px; }
.blog-card-body h3 { font-size: 1.1rem; margin-bottom: 8px; }
.blog-card-body p { font-size: 0.9rem; color: var(--gray-500); margin-bottom: 12px; }
.blog-card-meta { font-size: 0.8rem; color: var(--gray-400); }

/* ---------- Contact Form ---------- */
.contact-form {
  max-width: 600px;
}

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

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--navy);
  font-size: 0.95rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-family: 'Open Sans', sans-serif;
  font-size: 1rem;
  color: var(--gray-700);
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--teal);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

/* ---------- Class/Curriculum Cards ---------- */
.curriculum-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 32px;
  border-left: 4px solid var(--teal);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.curriculum-card:hover {
  box-shadow: var(--shadow-md);
}
.grid-4 .curriculum-card:nth-child(1) { border-left-color: var(--teal); }
.grid-4 .curriculum-card:nth-child(2) { border-left-color: var(--coral); }
.grid-4 .curriculum-card:nth-child(3) { border-left-color: var(--yellow); }
.grid-4 .curriculum-card:nth-child(4) { border-left-color: var(--navy); }
.curriculum-card .class-number {
  font-family: 'Nunito', sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--teal);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.curriculum-card h3 { margin-bottom: 8px; }
.curriculum-card p { color: var(--gray-500); font-size: 0.95rem; margin-bottom: 12px; }
.curriculum-card .takeawai {
  font-style: italic;
  color: var(--teal-dark);
  font-weight: 600;
  font-size: 0.9rem;
}
.curriculum-card .takeawai span {
  font-weight: 800;
}

/* ---------- About Page ---------- */
.about-story {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/5;
  background: linear-gradient(135deg, var(--teal-light), var(--light-bg));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 6rem;
}
.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.about-photo-placeholder {
  flex-direction: column;
  gap: 12px;
  border: 3px dashed var(--teal);
}
.about-photo-placeholder i {
  font-size: 4rem;
  color: var(--teal);
  opacity: 0.6;
}
.photo-label {
  font-family: 'Nunito', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  color: var(--teal);
  opacity: 0.7;
}

.about-text h2 { margin-bottom: 16px; }
.about-text p { margin-bottom: 16px; color: var(--gray-600); }

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

.stat {
  text-align: center;
  padding: 24px;
}

.stat-number {
  font-family: 'Nunito', sans-serif;
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--teal);
}

.stat-label {
  font-size: 0.9rem;
  color: var(--gray-500);
  margin-top: 4px;
}

/* ---------- Features list ---------- */
.feature-list {
  list-style: none;
}
.feature-list li {
  display: flex;
  align-items: start;
  gap: 12px;
  padding: 12px 0;
  color: var(--gray-600);
}
.feature-list li .icon {
  color: var(--teal);
  font-weight: 700;
  font-size: 1.2rem;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ---------- Form Success ---------- */
.form-success {
  text-align: center;
  padding: 32px;
}
.form-success p {
  font-family: 'Nunito', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--teal);
}

.form-group input.error,
.form-group textarea.error {
  border-color: var(--coral);
}

/* ---------- Animations ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Mobile Nav ---------- */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(10px);
  z-index: 999;
  padding: 100px 32px 32px;
}
.mobile-nav.open { display: flex; flex-direction: column; }
.mobile-nav.active { display: flex; flex-direction: column; }

.mobile-nav a {
  display: block;
  padding: 16px 0;
  font-family: 'Nunito', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--navy);
  border-bottom: 1px solid var(--gray-200);
}
.mobile-nav a:hover { color: var(--teal); }

.mobile-nav-close {
  position: absolute;
  top: 20px;
  right: 24px;
  background: none;
  border: none;
  font-size: 2rem;
  color: var(--navy);
  cursor: pointer;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }

  .hero-home { padding: 120px 0 60px; }
  .hero { padding: 120px 0 60px; }

  .section { padding: 60px 0; }

  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }

  .steps { grid-template-columns: 1fr; gap: 32px; }
  .steps::before { display: none; }

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

  .about-story { grid-template-columns: 1fr; gap: 32px; }

  .pricing-card { padding: 32px 24px; }

  .btn-group { flex-direction: column; align-items: stretch; text-align: center; }

  .cta-form { flex-direction: column; }

  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }

  .hero-content { max-width: 100%; }
  .hero p { max-width: 100%; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .stats { grid-template-columns: 1fr 1fr; gap: 16px; }
  .stat-number { font-size: 2rem; }
}

/* ---------- Logo Icon — hidden at top, fades in on scroll ---------- */
.nav-logo-icon {
  display: inline-block;
  width: 36px;
  height: 36px;
  max-width: 0;
  opacity: 0;
  margin-right: 0;
  overflow: hidden;
  vertical-align: middle;
  position: relative;
  top: -1px;
  transition: max-width 0.35s ease, opacity 0.35s ease, margin-right 0.35s ease;
}

.navbar.scrolled .nav-logo-icon {
  max-width: 36px;
  opacity: 1;
  margin-right: 10px;
}