/* ============================================================
   CUBE CLASSES — Main Stylesheet
   ============================================================ */

/* --- Variables & Reset --- */
:root {
  /* Brand colors extracted from Cube Classes logo */
  --primary: #7C3AED;          /* vivid purple — logo rays */
  --primary-dark: #5B21B6;     /* deep purple */
  --primary-light: #F5F3FF;    /* tint for backgrounds */
  --secondary: #BE185D;        /* crimson — CTA buttons */
  --secondary-dark: #9D174D;   /* dark crimson */
  --secondary-light: #FDF2F8;  /* light pink tint */
  --navy: #1E3A8A;             /* deep navy — "CLASSES" text in logo */
  --navy-light: #EFF6FF;
  --maroon: #831843;           /* dark maroon — "CUBE" text in logo */
  --success: #10B981;
  --danger: #EF4444;
  --dark: #1E1B4B;             /* very dark indigo for headings/footer */
  --text: #2D2B52;
  --muted: #64748B;
  --border: #E2E8F0;
  --bg: #FAF9FF;               /* very subtle purple tint on white */
  --white: #FFFFFF;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(124, 58, 237, 0.08);
  --shadow-md: 0 8px 40px rgba(124, 58, 237, 0.14);
  --shadow-lg: 0 20px 60px rgba(124, 58, 237, 0.18);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Poppins', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font); color: var(--text); background: var(--white); line-height: 1.6; overflow-x: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: var(--font); }
input, select, textarea { font-family: var(--font); }

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--dark); }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 3vw, 1.5rem); }
p { color: var(--muted); line-height: 1.75; }

/* --- Utilities --- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section-sm { padding: 64px 0; }
.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.text-secondary { color: var(--secondary); }
.flex { display: flex; }
.items-center { align-items: center; }
.gap-2 { gap: 8px; }
.gap-4 { gap: 16px; }
.grid { display: grid; }
.hidden { display: none !important; }

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 16px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.section-title {
  margin-bottom: 16px;
}
.section-subtitle {
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 48px;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(124, 58, 237, 0.35);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(124, 58, 237, 0.45);
}
.btn-secondary {
  background: var(--secondary);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(190, 24, 93, 0.35);
}
.btn-secondary:hover {
  background: var(--secondary-dark);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
}
.btn-outline-white {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.6);
}
.btn-outline-white:hover {
  background: rgba(255,255,255,0.15);
  border-color: white;
}
.btn-lg { padding: 18px 36px; font-size: 1.05rem; border-radius: 14px; }
.btn-sm { padding: 10px 20px; font-size: 0.85rem; }
.btn-pulse {
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 4px 16px rgba(190, 24, 93, 0.35); }
  50% { box-shadow: 0 4px 32px rgba(190, 24, 93, 0.65); }
}

/* ============================================================
   HEADER & NAVIGATION
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}
.header.scrolled {
  border-bottom-color: var(--border);
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.logo-img {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
}
.logo-wordmark {
  display: flex;
  flex-direction: column;
  line-height: 1;
  gap: 1px;
}
.logo-cube {
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--maroon);
  letter-spacing: 0.08em;
  line-height: 1;
}
.logo-classes {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  line-height: 1;
}
/* Legacy icon — kept for footer where we use the old structure */
.logo-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
}
.logo-icon img { width: 100%; height: 100%; object-fit: contain; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-links a {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  transition: var(--transition);
  position: relative;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--primary);
  background: var(--primary-light);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: 8px;
  cursor: pointer;
}
.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background: white;
  border-bottom: 1px solid var(--border);
  padding: 24px;
  box-shadow: var(--shadow-md);
  z-index: 999;
  flex-direction: column;
  gap: 4px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  padding: 12px 16px;
  border-radius: var(--radius);
  font-weight: 500;
  color: var(--text);
  transition: var(--transition);
}
.mobile-menu a:hover { background: var(--primary-light); color: var(--primary); }
.mobile-menu .mobile-cta { margin-top: 12px; display: flex; flex-direction: column; gap: 10px; }

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  padding: 160px 0 96px;
  background: linear-gradient(135deg, #F5F3FF 0%, #FDF2F8 60%, #EFF6FF 100%);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(124,58,237,0.08) 0%, transparent 70%);
  border-radius: 50%;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -150px;
  left: -150px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(190,24,93,0.08) 0%, transparent 70%);
  border-radius: 50%;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: white;
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 24px;
  box-shadow: var(--shadow);
}
.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--success);
  border-radius: 50%;
  animation: blink 1.5s infinite;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }
.hero h1 { margin-bottom: 24px; }
.hero h1 em { font-style: normal; color: var(--primary); position: relative; }
.hero h1 em::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--secondary);
  border-radius: 4px;
  opacity: 0.6;
}
.hero p { font-size: 1.1rem; margin-bottom: 40px; max-width: 480px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 40px; }
.hero-trust {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text);
}
.trust-item i { color: var(--success); }
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}
.hero-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 420px;
  position: relative;
  z-index: 1;
}
.hero-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
.avatar-stack {
  display: flex;
}
.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 3px solid white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  color: white;
  margin-left: -10px;
}
.avatar:first-child { margin-left: 0; }
.avatar-1 { background: linear-gradient(135deg, #7C3AED, #5B21B6); }
.avatar-2 { background: linear-gradient(135deg, #BE185D, #EF4444); }
.avatar-3 { background: linear-gradient(135deg, #10B981, #059669); }
.avatar-4 { background: linear-gradient(135deg, #EC4899, #BE185D); }
.subject-pills { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.pill {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
}
.pill-math { background: #F5F3FF; color: #7C3AED; }
.pill-hindi { background: #FDF2F8; color: #BE185D; }
.pill-robotics { background: #D1FAE5; color: #059669; }
.pill-coding { background: #FCE7F3; color: #BE185D; }
.pill-science { background: #EFF6FF; color: #1E3A8A; }
.pill-finance { background: #FFF7ED; color: #C2410C; }
.pill-english { background: #F0FDF4; color: #15803D; }
.rating-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg);
  border-radius: var(--radius);
  padding: 12px 16px;
}
.stars { color: var(--secondary); font-size: 0.9rem; letter-spacing: 2px; }
.rating-text { font-size: 0.85rem; font-weight: 600; }

/* Floating elements */
.float-badge {
  position: absolute;
  background: white;
  border-radius: var(--radius);
  padding: 10px 16px;
  box-shadow: var(--shadow-md);
  font-size: 0.8rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  animation: float 3s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
.float-1 { top: -24px; right: -24px; animation-delay: 0s; }
.float-2 { bottom: 40px; left: -32px; animation-delay: 1.5s; }

/* ============================================================
   STATS BAR
   ============================================================ */
.stats-bar {
  background: var(--dark);
  padding: 32px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}
.stat-item {}
.stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  color: white;
  line-height: 1;
  margin-bottom: 6px;
}
.stat-number span { color: var(--secondary); }
.stat-label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  font-weight: 500;
}

/* ============================================================
   WHY CUBE CLASSES
   ============================================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 56px;
}
.feature-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}
.icon-indigo { background: var(--primary-light); color: var(--primary); }
.icon-amber { background: var(--secondary-light); color: var(--secondary-dark); }
.icon-green { background: #D1FAE5; color: #059669; }
.icon-pink { background: #FCE7F3; color: #BE185D; }
.icon-blue { background: #DBEAFE; color: #1D4ED8; }
.icon-orange { background: #FFF7ED; color: #C2410C; }
.feature-card h3 { margin-bottom: 12px; font-size: 1.15rem; }
.feature-card p { font-size: 0.9rem; }

/* ============================================================
   SUBJECTS
   ============================================================ */
.subjects { background: var(--bg); }
.subjects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.subject-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
}
.subject-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.subject-banner {
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  position: relative;
}
.subject-banner-math { background: linear-gradient(135deg, #F5F3FF, #DDD6FE); }
.subject-banner-hindi { background: linear-gradient(135deg, #FDF2F8, #FBCFE8); }
.subject-banner-robotics { background: linear-gradient(135deg, #D1FAE5, #A7F3D0); }
.subject-banner-coding { background: linear-gradient(135deg, #FCE7F3, #FBCFE8); }
.subject-banner-science { background: linear-gradient(135deg, #DBEAFE, #BFDBFE); }
.subject-banner-finance { background: linear-gradient(135deg, #FFF7ED, #FED7AA); }
.subject-banner-english { background: linear-gradient(135deg, #F0FDF4, #BBF7D0); }
.subject-body { padding: 24px; }
.subject-body h3 { margin-bottom: 8px; font-size: 1.1rem; }
.subject-body p { font-size: 0.85rem; margin-bottom: 16px; }
.subject-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 20px; }
.subject-tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  background: var(--bg);
  border-radius: 100px;
  color: var(--muted);
}
.subject-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.subject-age { font-size: 0.8rem; font-weight: 600; color: var(--muted); }
.subject-age span { color: var(--primary); }

/* ============================================================
   HOW IT WORKS
   ============================================================ */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
  margin-top: 56px;
}
.steps-grid::before {
  content: '';
  position: absolute;
  top: 32px;
  left: 15%;
  right: 15%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  opacity: 0.2;
}
.step-card { text-align: center; position: relative; }
.step-number {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 800;
  margin: 0 auto 20px;
  box-shadow: 0 4px 16px rgba(124, 58, 237, 0.4);
  position: relative;
  z-index: 1;
}
.step-card h3 { font-size: 1rem; margin-bottom: 8px; }
.step-card p { font-size: 0.85rem; }

/* ============================================================
   CUBO AI SECTION
   ============================================================ */
.cubo-section {
  background: linear-gradient(135deg, var(--dark) 0%, #1E1B4B 100%);
  position: relative;
  overflow: hidden;
}
.cubo-section::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(124,58,237,0.3) 0%, transparent 70%);
  border-radius: 50%;
}
.cubo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.cubo-content .section-badge {
  background: rgba(124,58,237,0.2);
  color: #A5B4FC;
}
.cubo-content h2 { color: white; }
.cubo-content p { color: rgba(255,255,255,0.7); margin-bottom: 32px; }
.cubo-features { display: flex; flex-direction: column; gap: 20px; }
.cubo-feature {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.cubo-feature-icon {
  width: 44px;
  height: 44px;
  background: rgba(124,58,237,0.2);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #A5B4FC;
  font-size: 1.1rem;
  flex-shrink: 0;
  border: 1px solid rgba(124,58,237,0.3);
}
.cubo-feature-text h4 { color: white; margin-bottom: 4px; font-size: 0.95rem; }
.cubo-feature-text p { font-size: 0.85rem; color: rgba(255,255,255,0.6); margin: 0; }

.cubo-chat {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(12px);
}
.chat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.chat-avatar {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary), #7C3AED);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
}
.chat-name { color: white; font-weight: 700; font-size: 0.95rem; }
.chat-status { font-size: 0.75rem; color: #6EE7B7; display: flex; align-items: center; gap: 4px; }
.chat-messages { display: flex; flex-direction: column; gap: 12px; margin-bottom: 20px; }
.message {
  max-width: 80%;
  padding: 12px 16px;
  border-radius: 16px;
  font-size: 0.85rem;
  line-height: 1.5;
}
.message-cubo {
  background: rgba(124,58,237,0.25);
  color: rgba(255,255,255,0.9);
  border-bottom-left-radius: 4px;
  align-self: flex-start;
  border: 1px solid rgba(124,58,237,0.3);
}
.message-user {
  background: rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.8);
  border-bottom-right-radius: 4px;
  align-self: flex-end;
}
.chat-input {
  display: flex;
  gap: 10px;
  align-items: center;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 10px 14px;
}
.chat-input-field {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: white;
  font-size: 0.85rem;
}
.chat-input-field::placeholder { color: rgba(255,255,255,0.4); }
.chat-send {
  width: 32px;
  height: 32px;
  background: var(--primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.85rem;
  transition: var(--transition);
}
.chat-send:hover { background: var(--primary-dark); }

/* ============================================================
   FREE DEMO CTA
   ============================================================ */
.demo-cta {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  position: relative;
  overflow: hidden;
  text-align: center;
}
.demo-cta::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -10%;
  width: 40%;
  height: 200%;
  background: rgba(255,255,255,0.05);
  transform: skewX(-15deg);
}
.demo-cta::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -5%;
  width: 30%;
  height: 200%;
  background: rgba(255,255,255,0.03);
  transform: skewX(-15deg);
}
.demo-cta h2 { color: white; margin-bottom: 16px; }
.demo-cta p { color: rgba(255,255,255,0.8); font-size: 1.1rem; margin-bottom: 40px; }
.demo-form {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  max-width: 600px;
  margin: 0 auto 24px;
}
.demo-form input {
  padding: 14px 20px;
  border-radius: var(--radius);
  border: none;
  font-size: 0.95rem;
  outline: none;
  background: rgba(255,255,255,0.15);
  color: white;
  border: 1px solid rgba(255,255,255,0.2);
  flex: 1;
  min-width: 200px;
  backdrop-filter: blur(8px);
}
.demo-form input::placeholder { color: rgba(255,255,255,0.6); }
.demo-form input:focus { background: rgba(255,255,255,0.2); border-color: rgba(255,255,255,0.4); }
.demo-guarantee {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}
.guarantee-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.8);
  font-weight: 500;
}
.guarantee-item i { color: #6EE7B7; }

/* ============================================================
   TESTIMONIALS
   ============================================================ */
.testimonials { background: var(--bg); }
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.testimonial-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
}
.testimonial-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.testimonial-card::before {
  content: '\201C';
  position: absolute;
  top: 16px;
  right: 24px;
  font-size: 4rem;
  color: var(--primary);
  opacity: 0.1;
  font-family: Georgia, serif;
  line-height: 1;
}
.testimonial-stars { margin-bottom: 16px; }
.testimonial-stars i { color: var(--secondary); font-size: 0.9rem; }
.testimonial-text { font-size: 0.9rem; margin-bottom: 24px; color: var(--text); line-height: 1.7; }
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: white;
  font-size: 1rem;
}
.ta-1 { background: linear-gradient(135deg, #7C3AED, #5B21B6); }
.ta-2 { background: linear-gradient(135deg, #BE185D, #EF4444); }
.ta-3 { background: linear-gradient(135deg, #10B981, #059669); }
.ta-4 { background: linear-gradient(135deg, #C91470, #9D174D); }
.ta-5 { background: linear-gradient(135deg, #1E3A8A, #2563EB); }
.ta-6 { background: linear-gradient(135deg, #8B5CF6, #5B21B6); }
.testimonial-info {}
.testimonial-name { font-weight: 700; font-size: 0.95rem; color: var(--dark); }
.testimonial-role { font-size: 0.8rem; color: var(--muted); }
.subject-badge {
  margin-left: auto;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 100px;
  background: var(--primary-light);
  color: var(--primary);
}

/* ============================================================
   MENTORS
   ============================================================ */
.mentors-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.mentor-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  text-align: center;
}
.mentor-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.mentor-avatar-wrap {
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mentor-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 800;
  color: white;
  border: 4px solid white;
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}
.m-bg-1 { background: linear-gradient(135deg, #7C3AED, #5B21B6); }
.m-bg-2 { background: linear-gradient(135deg, #BE185D, #EF4444); }
.m-bg-3 { background: linear-gradient(135deg, #10B981, #059669); }
.m-bg-4 { background: linear-gradient(135deg, #EC4899, #BE185D); }
.mentor-bg-1 { background: linear-gradient(135deg, #F5F3FF, #DDD6FE); }
.mentor-bg-2 { background: linear-gradient(135deg, #FDF2F8, #FBCFE8); }
.mentor-bg-3 { background: linear-gradient(135deg, #D1FAE5, #A7F3D0); }
.mentor-bg-4 { background: linear-gradient(135deg, #FCE7F3, #FBCFE8); }
.mentor-body { padding: 20px; }
.mentor-name { font-weight: 700; font-size: 1rem; margin-bottom: 4px; }
.mentor-subject { font-size: 0.8rem; color: var(--primary); font-weight: 600; margin-bottom: 8px; }
.mentor-exp { font-size: 0.8rem; color: var(--muted); margin-bottom: 16px; }
.mentor-rating {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8rem;
  font-weight: 600;
  background: var(--secondary-light);
  color: var(--secondary-dark);
  padding: 4px 10px;
  border-radius: 100px;
}
.mentor-rating i { font-size: 0.7rem; }

/* ============================================================
   FAQ
   ============================================================ */
.faq { background: var(--bg); }
.faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.open { box-shadow: var(--shadow); border-color: var(--primary); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--dark);
  gap: 16px;
}
.faq-icon {
  width: 28px;
  height: 28px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  flex-shrink: 0;
  transition: var(--transition);
}
.faq-item.open .faq-icon { background: var(--primary); color: white; transform: rotate(45deg); }
.faq-answer {
  display: none;
  padding: 0 24px 20px;
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.75;
}
.faq-item.open .faq-answer { display: block; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--dark);
  padding: 80px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand p { color: rgba(255,255,255,0.55); font-size: 0.9rem; margin: 16px 0 24px; max-width: 280px; }
.footer-logo { display: flex; align-items: center; gap: 10px; }
.footer-logo .logo-img { width: 44px; height: 44px; }
.footer-logo .logo-wordmark .logo-cube { color: #E9D5FF; }
.footer-logo .logo-wordmark .logo-classes { color: rgba(255,255,255,0.7); }
.social-links { display: flex; gap: 10px; }
.social-link {
  width: 38px;
  height: 38px;
  background: rgba(255,255,255,0.08);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  transition: var(--transition);
}
.social-link:hover { background: var(--primary); color: white; }
.footer-col h4 { color: white; font-size: 0.9rem; margin-bottom: 20px; }
.footer-links { display: flex; flex-direction: column; gap: 12px; }
.footer-links a { color: rgba(255,255,255,0.55); font-size: 0.85rem; transition: var(--transition); }
.footer-links a:hover { color: white; padding-left: 4px; }
.footer-contact { display: flex; flex-direction: column; gap: 12px; }
.contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,0.55);
  font-size: 0.85rem;
}
.contact-item i { color: var(--primary); width: 16px; }
.footer-bottom {
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-bottom p { color: rgba(255,255,255,0.35); font-size: 0.8rem; }
.footer-bottom-links { display: flex; gap: 24px; }
.footer-bottom-links a { color: rgba(255,255,255,0.35); font-size: 0.8rem; transition: var(--transition); }
.footer-bottom-links a:hover { color: white; }

/* ============================================================
   WHATSAPP FLOATING BUTTON
   ============================================================ */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.whatsapp-btn {
  width: 56px;
  height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.5);
  transition: var(--transition);
  animation: whatsapp-pulse 2s infinite;
}
.whatsapp-btn:hover { transform: scale(1.1); }
@keyframes whatsapp-pulse {
  0%, 100% { box-shadow: 0 4px 20px rgba(37, 211, 102, 0.5); }
  50% { box-shadow: 0 4px 40px rgba(37, 211, 102, 0.75); }
}
.whatsapp-tooltip {
  background: white;
  color: var(--text);
  padding: 10px 16px;
  border-radius: var(--radius);
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: var(--shadow-md);
  white-space: nowrap;
  opacity: 0;
  transform: translateX(10px);
  transition: var(--transition);
  pointer-events: none;
}
.whatsapp-float:hover .whatsapp-tooltip { opacity: 1; transform: translateX(0); }

/* ============================================================
   PRICING PAGE
   ============================================================ */
.pricing-hero {
  padding: 140px 0 64px;
  background: linear-gradient(135deg, #F5F3FF 0%, #EFF6FF 100%);
  text-align: center;
}
.pricing-toggle {
  display: inline-flex;
  background: white;
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 4px;
  gap: 4px;
  margin-bottom: 56px;
}
.toggle-btn {
  padding: 10px 24px;
  border-radius: 100px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: var(--transition);
  color: var(--muted);
}
.toggle-btn.active { background: var(--primary); color: white; }
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: start;
}
.pricing-card {
  background: white;
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  transition: var(--transition);
  position: relative;
}
.pricing-card.popular {
  border-color: var(--primary);
  transform: scale(1.04);
  box-shadow: var(--shadow-lg);
}
.popular-badge {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: white;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 100px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.pricing-plan { font-size: 0.85rem; font-weight: 600; color: var(--muted); margin-bottom: 8px; text-transform: uppercase; letter-spacing: 0.05em; }
.pricing-price { font-size: 3rem; font-weight: 800; color: var(--dark); line-height: 1; margin-bottom: 4px; }
.pricing-price sup { font-size: 1.5rem; font-weight: 600; vertical-align: super; }
.pricing-period { font-size: 0.85rem; color: var(--muted); margin-bottom: 8px; }
.pricing-save { font-size: 0.8rem; font-weight: 600; color: var(--success); background: #D1FAE5; padding: 4px 10px; border-radius: 100px; display: inline-block; margin-bottom: 32px; }
.pricing-divider { height: 1px; background: var(--border); margin-bottom: 28px; }
.pricing-features { display: flex; flex-direction: column; gap: 14px; margin-bottom: 32px; }
.pricing-feature { display: flex; align-items: center; gap: 10px; font-size: 0.9rem; color: var(--text); }
.pricing-feature i { color: var(--success); width: 16px; }
.pricing-feature.disabled { color: var(--muted); }
.pricing-feature.disabled i { color: var(--border); }

/* ============================================================
   CONTACT / BOOKING PAGE
   ============================================================ */
.contact-hero {
  padding: 140px 0 64px;
  background: linear-gradient(135deg, #F5F3FF 0%, #FDF2F8 100%);
  text-align: center;
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
  align-items: start;
}
.contact-info {}
.contact-card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 24px;
}
.contact-card h3 { margin-bottom: 20px; font-size: 1.1rem; }
.contact-items { display: flex; flex-direction: column; gap: 16px; }
.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.contact-info-icon {
  width: 40px;
  height: 40px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-info-text h4 { font-size: 0.85rem; color: var(--muted); margin-bottom: 2px; }
.contact-info-text p { color: var(--dark); font-size: 0.9rem; font-weight: 500; margin: 0; }

.booking-form {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow);
}
.form-title { margin-bottom: 8px; }
.form-subtitle { font-size: 0.9rem; color: var(--muted); margin-bottom: 32px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.full { grid-column: 1 / -1; }
.form-label { font-size: 0.85rem; font-weight: 600; color: var(--text); }
.form-input, .form-select, .form-textarea {
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  color: var(--text);
  transition: var(--transition);
  background: var(--bg);
  outline: none;
  width: 100%;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary);
  background: white;
  box-shadow: 0 0 0 3px rgba(124,58,237,0.1);
}
.form-textarea { min-height: 120px; resize: vertical; }
.time-slots {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.time-slot {
  padding: 10px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  color: var(--text);
}
.time-slot:hover, .time-slot.selected {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary);
}
.form-submit-area { margin-top: 28px; }
.form-submit-area .btn { width: 100%; justify-content: center; }

/* ============================================================
   COURSES PAGE
   ============================================================ */
.courses-hero {
  padding: 140px 0 64px;
  background: linear-gradient(135deg, #F5F3FF 0%, #D1FAE5 100%);
  text-align: center;
}
.course-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.course-sidebar {
  position: sticky;
  top: 96px;
}
.course-enroll-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow);
}
.course-curriculum .curriculum-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.curriculum-item:last-child { border-bottom: none; }
.curriculum-icon {
  width: 32px;
  height: 32px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  flex-shrink: 0;
}
.curriculum-text h4 { font-size: 0.9rem; font-weight: 600; margin-bottom: 2px; }
.curriculum-text p { font-size: 0.8rem; color: var(--muted); margin: 0; }

/* ============================================================
   PAGE HERO (shared)
   ============================================================ */
.page-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: white;
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}
.page-badge i { color: var(--primary); }

/* ============================================================
   SCROLL ANIMATION
   ============================================================ */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { order: -1; }
  .hero-card { max-width: 100%; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .subjects-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid::before { display: none; }
  .cubo-grid { grid-template-columns: 1fr; gap: 48px; }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .mentors-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
  .pricing-card.popular { transform: none; }
  .contact-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .course-detail-grid { grid-template-columns: 1fr; }
  .course-sidebar { position: static; }
}
@media (max-width: 768px) {
  .nav-links, .nav-actions .btn { display: none; }
  .hamburger { display: flex; }
  .features-grid { grid-template-columns: 1fr; }
  .subjects-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .mentors-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .demo-form { flex-direction: column; }
  .form-grid { grid-template-columns: 1fr; }
  .time-slots { grid-template-columns: repeat(2, 1fr); }
  .float-1, .float-2 { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .whatsapp-float { bottom: 20px; right: 20px; }
}
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .section { padding: 64px 0; }
  .mentors-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
}