/* =============================================
   NEXT GEN AI TEACHER — PREMIUM DARK DESIGN
   ============================================= */

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

:root {
  --black:    #050505;       /* deeper black */
  --dark:     #090909;
  --card:     #0e0e0e;
  --card2:    #111111;
  --border:   rgba(255,255,255,0.07);
  --border2:  rgba(110,231,183,0.15);
  --white:    #ffffff;
  --muted:    rgba(255,255,255,0.50);
  --accent:   #6ee7b7;
  --accent2:  #818cf8;
  --gold:     #fbbf24;
  --red:      #f87171;
  --radius:   16px;
  --font-bn:  'Noto Serif Bengali', serif;   /* সব বাংলায় */
  --font-en:  'Inter', sans-serif;
  --max-w:    1100px;
  --narrow:   720px;
}

html { scroll-behavior: smooth; }

body {
  background: var(--black);
  color: var(--white);
  font-family: var(--font-bn);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ---- CURSOR GLOW ---- */
#cursor-glow {
  pointer-events: none;
  position: fixed;
  width: 420px; height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(110,231,183,0.07) 0%, transparent 65%);
  transform: translate(-50%, -50%);
  transition: left 0.12s ease, top 0.12s ease;
  z-index: 0;
  mix-blend-mode: screen;
}

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 28px; position: relative; z-index: 1; }
.container.narrow { max-width: var(--narrow); }

/* ---- NAV ---- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  padding: 18px 0;
  transition: background 0.4s, border-color 0.4s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(5,5,5,0.95);
  backdrop-filter: blur(20px);
  border-color: var(--border);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto; padding: 0 28px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--font-en); font-weight: 800; font-size: 17px;
  letter-spacing: -0.5px;
}
.logo-icon { color: var(--accent); font-size: 18px; }
.nav-cta {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: var(--black);
  padding: 10px 24px; border-radius: 100px;
  font-weight: 800; font-size: 14px; text-decoration: none;
  font-family: var(--font-bn);
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 20px rgba(110,231,183,0.25);
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(110,231,183,0.4); }

/* ---- HERO ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center;
  padding: 150px 0 100px;
  overflow: hidden;
  text-align: center;
}

/* Animated background grid */
.hero-bg-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, black 20%, transparent 100%);
  animation: gridShift 20s linear infinite;
}
@keyframes gridShift {
  0%   { background-position: 0 0; }
  100% { background-position: 56px 56px; }
}

/* Floating orbs */
.hero::after {
  content: '';
  position: absolute; bottom: -100px; right: -80px;
  width: 500px; height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(129,140,248,0.07) 0%, transparent 65%);
  pointer-events: none;
  animation: floatOrb 8s ease-in-out infinite;
}
@keyframes floatOrb {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-30px); }
}

.badge-pill {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(110,231,183,0.10);
  border: 1px solid rgba(110,231,183,0.28);
  color: var(--accent);
  padding: 8px 22px; border-radius: 100px;
  font-size: 14px; font-family: var(--font-bn); font-weight: 600;
  margin-bottom: 32px;
  animation: pulseBorder 3s ease-in-out infinite;
}
@keyframes pulseBorder {
  0%, 100% { box-shadow: 0 0 0 0 rgba(110,231,183,0); }
  50%       { box-shadow: 0 0 0 6px rgba(110,231,183,0.08); }
}

.hero-title {
  font-family: var(--font-en);
  font-size: clamp(44px, 7.5vw, 92px);
  font-weight: 900;
  line-height: 1.03;
  letter-spacing: -3px;
  margin-bottom: 22px;
}
.gradient-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 24px rgba(110,231,183,0.3));
}

.hero-sub {
  color: var(--muted);
  font-size: 19px; font-family: var(--font-bn);
  margin-bottom: 44px;
  line-height: 1.9;
}

/* ---- HERO PRICE BLOCK ---- */
.hero-price-block {
  display: inline-flex; align-items: center;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(110,231,183,0.2);
  border-radius: var(--radius);
  padding: 24px 40px;
  margin-bottom: 32px;
  gap: 36px;
  box-shadow: 0 0 40px rgba(110,231,183,0.05);
  backdrop-filter: blur(8px);
}
.price-label {
  display: block; font-size: 11px; color: var(--muted);
  margin-bottom: 6px; text-transform: uppercase;
  letter-spacing: 1.2px; font-family: var(--font-en);
}
.price-amount {
  font-family: var(--font-en); font-size: 46px; font-weight: 900;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 20px rgba(110,231,183,0.5));
  display: block; line-height: 1;
}
.price-divider { width: 1px; height: 56px; background: var(--border); flex-shrink: 0; }
.price-strike {
  font-family: var(--font-en); font-size: 24px; font-weight: 600;
  color: rgba(255,255,255,0.25); text-decoration: line-through; margin-right: 10px;
}
.price-badge {
  background: var(--gold); color: #000;
  font-size: 11px; font-weight: 800;
  padding: 3px 9px; border-radius: 6px;
  font-family: var(--font-en); vertical-align: middle;
  animation: badgePulse 2s ease-in-out infinite;
}
@keyframes badgePulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(251,191,36,0); }
  50%       { box-shadow: 0 0 0 5px rgba(251,191,36,0.12); }
}
.price-later { text-align: left; }

/* ---- COUNTDOWN ---- */
.countdown-wrap { margin-bottom: 40px; }
.countdown-label { font-size: 13px; color: var(--muted); margin-bottom: 14px; font-family: var(--font-bn); }
.countdown { display: inline-flex; align-items: center; gap: 10px; }
.cd-box {
  display: flex; flex-direction: column; align-items: center;
  background: rgba(110,231,183,0.07);
  border: 1px solid rgba(110,231,183,0.18);
  border-radius: 12px; padding: 14px 20px; min-width: 74px;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.cd-box:hover { border-color: rgba(110,231,183,0.4); box-shadow: 0 0 20px rgba(110,231,183,0.1); }
.cd-box span { font-family: var(--font-en); font-size: 30px; font-weight: 900; line-height: 1; color: var(--accent); }
.cd-box label { font-size: 10px; color: var(--muted); margin-top: 5px; font-family: var(--font-bn); text-transform: uppercase; letter-spacing: 0.5px; }
.cd-sep { font-size: 26px; font-weight: 900; color: rgba(110,231,183,0.4); }

/* ---- BUTTONS ---- */
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  color: var(--black);
  padding: 18px 48px; border-radius: 100px;
  font-weight: 800; font-size: 17px; text-decoration: none;
  font-family: var(--font-bn);
  transition: transform 0.25s cubic-bezier(.34,1.56,.64,1), box-shadow 0.25s;
  box-shadow: 0 6px 30px rgba(110,231,183,0.3);
  letter-spacing: 0.2px;
  position: relative; overflow: hidden;
}
.btn-primary::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.btn-primary:hover { transform: translateY(-3px) scale(1.02); box-shadow: 0 14px 44px rgba(110,231,183,0.45); }
.btn-primary:hover::before { opacity: 1; }
.btn-primary:active { transform: translateY(0) scale(0.99); }

.btn-primary.btn-light {
  background: linear-gradient(135deg, var(--accent) 0%, #34d399 100%);
  color: var(--black);
}

/* ---- HERO STATS ---- */
.hero-stats {
  display: flex; align-items: center; justify-content: center; flex-wrap: wrap;
  margin-top: 60px;
}
.stat { text-align: center; padding: 0 36px; }
.stat strong {
  display: block; font-family: var(--font-en);
  font-size: 32px; font-weight: 900;
  background: linear-gradient(135deg, var(--white), rgba(255,255,255,0.75));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat span { font-size: 12px; color: var(--muted); font-family: var(--font-bn); margin-top: 2px; display: block; }
.stat-sep { width: 1px; height: 40px; background: var(--border); }

/* ---- SECTIONS ---- */
.section { padding: 100px 0; }
.alt-bg { background: var(--dark); }
.section-tag {
  display: inline-block;
  font-size: 11px; font-family: var(--font-en); font-weight: 700;
  color: var(--accent); text-transform: uppercase; letter-spacing: 2px;
  margin-bottom: 18px;
}
.section-tag.light { color: rgba(110,231,183,0.8); }
.section-title {
  font-family: var(--font-en);
  font-size: clamp(30px, 4vw, 52px);
  font-weight: 900; letter-spacing: -1.5px;
  margin-bottom: 18px; line-height: 1.1;
}
.section-title.light { color: var(--white); }
.section-desc {
  color: var(--muted); font-size: 17px; font-family: var(--font-bn);
  max-width: 560px; margin: 0 auto 52px; line-height: 1.9;
}
.section-desc.light { color: rgba(255,255,255,0.65); }
.section { text-align: center; }

/* ---- PILLS ---- */
.pill-row { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 12px; }
.pill {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  padding: 9px 20px; border-radius: 100px;
  font-size: 14px; font-family: var(--font-bn); color: var(--white);
  transition: all 0.25s;
}
.pill:hover {
  background: rgba(110,231,183,0.1);
  border-color: rgba(110,231,183,0.35);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(110,231,183,0.1);
}

/* ---- LEVELS ---- */
.levels-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 20px; margin-top: 52px;
}
.level-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
  text-align: left;
  cursor: default;
  transition: border-color 0.3s, box-shadow 0.3s;
  position: relative; overflow: hidden;
  will-change: transform;
}
.level-card::before {
  content: attr(data-level);
  position: absolute; top: -15px; right: 12px;
  font-family: var(--font-en); font-size: 90px; font-weight: 900;
  color: rgba(255,255,255,0.025); line-height: 1;
  pointer-events: none;
}
.level-card::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(110,231,183,0.04), transparent);
  opacity: 0; transition: opacity 0.3s;
  pointer-events: none;
}
.level-card:hover { border-color: rgba(110,231,183,0.35); box-shadow: 0 12px 40px rgba(110,231,183,0.08); }
.level-card:hover::after { opacity: 1; }
.level-num {
  font-family: var(--font-en); font-size: 11px; font-weight: 700;
  color: var(--accent); text-transform: uppercase; letter-spacing: 2px;
  margin-bottom: 14px;
}
.level-name {
  font-family: var(--font-en); font-size: 24px; font-weight: 900;
  margin-bottom: 16px; line-height: 1.2;
}
.level-tag {
  display: inline-block;
  background: rgba(110,231,183,0.08);
  border: 1px solid rgba(110,231,183,0.2);
  color: var(--accent);
  font-size: 11px; font-family: var(--font-en); font-weight: 700;
  padding: 5px 14px; border-radius: 100px;
  text-transform: uppercase; letter-spacing: 1px;
}

/* ---- DETAILS GRID ---- */
.details-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px; margin-top: 52px; text-align: left;
}
.detail-item {
  display: flex; align-items: center; gap: 18px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px 24px;
  transition: all 0.25s;
}
.detail-item:hover {
  border-color: rgba(110,231,183,0.3);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}
.di-icon { font-size: 28px; flex-shrink: 0; }
.detail-item strong { display: block; font-size: 13px; font-family: var(--font-en); font-weight: 700; margin-bottom: 4px; }
.detail-item span { display: block; font-size: 14px; color: var(--muted); font-family: var(--font-bn); }
.detail-item div { display: flex; flex-direction: column; }

/* ---- CURRICULUM ---- */
.curriculum-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 18px; margin-top: 52px; text-align: left;
}
.curr-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: all 0.3s;
  position: relative; overflow: hidden;
}
.curr-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.4s ease;
}
.curr-card:hover { border-color: rgba(129,140,248,0.3); transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,0.5); }
.curr-card:hover::before { transform: scaleX(1); }
.curr-icon { font-size: 32px; margin-bottom: 16px; }
.curr-card h4 {
  font-family: var(--font-en); font-size: 15px; font-weight: 800;
  margin-bottom: 18px; color: var(--white); line-height: 1.4;
}
.curr-card ul { list-style: none; }
.curr-card ul li {
  font-size: 13.5px; color: var(--muted); font-family: var(--font-bn);
  padding: 6px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  display: flex; align-items: center; gap: 8px;
}
.curr-card ul li:last-child { border-bottom: none; }
.curr-card ul li::before { content: "–"; color: var(--accent); font-weight: 700; flex-shrink: 0; }

/* ---- WHO GRID ---- */
.who-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px; margin-top: 44px; text-align: left;
}
.who-item {
  display: flex; align-items: center; gap: 12px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; padding: 18px 20px;
  font-size: 15px; font-weight: 600; font-family: var(--font-bn);
  transition: all 0.25s;
}
.who-item:hover {
  border-color: rgba(110,231,183,0.3);
  transform: translateX(6px);
  box-shadow: 0 4px 20px rgba(110,231,183,0.07);
}
.who-icon { font-size: 22px; flex-shrink: 0; }

/* ---- FAQ ---- */
.faq-list { display: flex; flex-direction: column; gap: 10px; margin-top: 44px; text-align: left; }
.faq-item {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  transition: border-color 0.25s, box-shadow 0.25s;
}
.faq-item[open] { border-color: rgba(110,231,183,0.3); box-shadow: 0 4px 24px rgba(110,231,183,0.06); }
.faq-item summary {
  padding: 22px 26px;
  font-size: 16px; font-weight: 700; font-family: var(--font-bn);
  cursor: pointer; list-style: none;
  display: flex; align-items: center; justify-content: space-between;
  transition: color 0.2s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 24px; font-weight: 300; font-family: var(--font-en);
  color: var(--accent); flex-shrink: 0;
  transition: transform 0.3s, color 0.3s;
}
.faq-item[open] summary::after { content: "–"; color: var(--accent2); }
.faq-item p {
  padding: 0 26px 22px;
  color: var(--muted); font-size: 15px; line-height: 1.85;
  font-family: var(--font-bn);
  border-top: 1px solid var(--border);
  padding-top: 18px;
}

/* ---- MID CTA BANNER ---- */
.mid-cta-banner {
  background: linear-gradient(90deg, rgba(110,231,183,0.06) 0%, rgba(129,140,248,0.06) 100%);
  border-top: 1px solid rgba(110,231,183,0.14);
  border-bottom: 1px solid rgba(110,231,183,0.14);
  padding: 32px 0;
}
.mid-cta-alt {
  background: linear-gradient(90deg, rgba(251,191,36,0.05) 0%, rgba(110,231,183,0.05) 100%);
  border-color: rgba(251,191,36,0.18);
}
.mid-cta-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 28px; flex-wrap: wrap;
}
.mid-cta-text { display: flex; flex-direction: column; gap: 5px; text-align: left; }
.mid-cta-label {
  font-size: 11px; font-family: var(--font-bn); color: var(--accent);
  font-weight: 700; text-transform: uppercase; letter-spacing: 1.2px;
}
.mid-cta-price {
  font-family: var(--font-en); font-size: 36px; font-weight: 900;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 18px rgba(110,231,183,0.4));
  line-height: 1.1;
}
.mid-cta-deadline { font-size: 15px; font-weight: 500; color: var(--muted); font-family: var(--font-bn); }

/* ---- ENROLL SECTION ---- */
.enroll-section {
  background: #040404;
  border-top: 1px solid rgba(110,231,183,0.12);
  position: relative; overflow: hidden;
}
.enroll-section::before {
  content: '';
  position: absolute; top: -300px; left: 50%; transform: translateX(-50%);
  width: 900px; height: 900px;
  background: radial-gradient(circle, rgba(110,231,183,0.06) 0%, transparent 60%);
  pointer-events: none;
  animation: floatOrb 10s ease-in-out infinite;
}

/* Big Highlight Price Box */
.enroll-highlight-box {
  display: inline-flex; align-items: stretch;
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(110,231,183,0.22);
  border-radius: 22px;
  margin: 36px auto;
  overflow: hidden;
  box-shadow: 0 0 100px rgba(110,231,183,0.07), inset 0 1px 0 rgba(255,255,255,0.04);
  max-width: 640px; width: 100%;
  transition: box-shadow 0.4s;
}
.enroll-highlight-box:hover { box-shadow: 0 0 120px rgba(110,231,183,0.13); }
.ehb-left {
  flex: 1; padding: 44px 48px; text-align: left;
  background: rgba(110,231,183,0.025);
}
.ehb-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #000;
  font-size: 11px; font-family: var(--font-en); font-weight: 900;
  padding: 5px 16px; border-radius: 100px;
  text-transform: uppercase; letter-spacing: 1.2px;
  margin-bottom: 16px;
}
.ehb-price {
  font-family: var(--font-en); font-size: 76px; font-weight: 900;
  line-height: 1; margin-bottom: 16px; letter-spacing: -4px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 36px rgba(110,231,183,0.45));
}
.ehb-deadline {
  font-size: 15px; color: var(--muted); font-family: var(--font-bn);
}
.ehb-divider { width: 1px; background: rgba(255,255,255,0.06); flex-shrink: 0; }
.ehb-right {
  flex: 0 0 175px; padding: 44px 24px;
  text-align: center;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
}
.ehb-after-label { font-size: 11px; color: var(--muted); font-family: var(--font-bn); text-transform: uppercase; letter-spacing: 0.8px; }
.ehb-after-price {
  font-family: var(--font-en); font-size: 34px; font-weight: 900;
  color: rgba(255,255,255,0.22); text-decoration: line-through;
}
.ehb-increase {
  font-family: var(--font-bn); font-size: 12px; font-weight: 700;
  color: var(--red);
  background: rgba(248,113,113,0.1); border: 1px solid rgba(248,113,113,0.2);
  padding: 5px 14px; border-radius: 100px;
  animation: badgePulse 2.5s ease-in-out infinite;
}

/* Enroll countdown */
.enroll-countdown-wrap { margin: 12px 0 40px; }
.enroll-cd-label { font-size: 13px; color: var(--muted); margin-bottom: 16px; font-family: var(--font-bn); }
.enroll-countdown { display: inline-flex; align-items: center; gap: 10px; }
.ecd-box {
  display: flex; flex-direction: column; align-items: center;
  background: rgba(110,231,183,0.07);
  border: 1px solid rgba(110,231,183,0.18);
  border-radius: 14px; padding: 16px 24px; min-width: 84px;
  transition: all 0.3s;
}
.ecd-box:hover { border-color: rgba(110,231,183,0.4); box-shadow: 0 0 24px rgba(110,231,183,0.12); }
.ecd-box span { font-family: var(--font-en); font-size: 36px; font-weight: 900; color: var(--accent); line-height: 1; }
.ecd-box label { font-size: 11px; color: var(--muted); margin-top: 6px; font-family: var(--font-bn); text-transform: uppercase; }
.ecd-sep { font-size: 30px; font-weight: 900; color: rgba(110,231,183,0.35); }

/* Big Enroll Button */
.btn-enroll {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  color: var(--black);
  padding: 22px 68px; border-radius: 100px;
  font-weight: 900; font-size: 20px; text-decoration: none;
  font-family: var(--font-bn);
  transition: transform 0.3s cubic-bezier(.34,1.56,.64,1), box-shadow 0.3s;
  box-shadow: 0 10px 50px rgba(110,231,183,0.35);
  letter-spacing: 0.3px;
  position: relative; overflow: hidden;
  margin-bottom: 8px;
}
.btn-enroll::after {
  content: '';
  position: absolute; top: 0; left: -100%;
  width: 60%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.25), transparent);
  transition: left 0.6s ease;
}
.btn-enroll:hover { transform: translateY(-4px) scale(1.03); box-shadow: 0 20px 60px rgba(110,231,183,0.5); }
.btn-enroll:hover::after { left: 150%; }
.btn-enroll:active { transform: translateY(0) scale(0.99); }

.trust-row {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 22px; margin-top: 30px;
  font-size: 13px; color: var(--muted); font-family: var(--font-bn);
}
.trust-row span { display: flex; align-items: center; gap: 6px; }

/* ---- FOOTER ---- */
.footer { padding: 44px 0; border-top: 1px solid var(--border); text-align: center; }
.footer-logo {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font-en); font-weight: 800; font-size: 16px;
  margin-bottom: 12px;
}
.footer-copy { font-size: 13px; color: var(--muted); font-family: var(--font-bn); }

/* ---- RESPONSIVE — TABLET ---- */
@media (max-width: 900px) {
  .levels-grid { grid-template-columns: repeat(2, 1fr); }
  .curriculum-grid { grid-template-columns: 1fr 1fr; }
  .details-grid { grid-template-columns: repeat(2, 1fr); }
  .enroll-highlight-box { max-width: 100%; }
}

/* ---- RESPONSIVE — MOBILE ---- */
@media (max-width: 640px) {
  /* Nav */
  .nav { padding: 12px 0; }
  .nav-inner { padding: 0 16px; }
  .nav-logo { font-size: 15px; }
  .nav-cta { padding: 8px 16px; font-size: 13px; }

  /* Hero */
  .hero { padding: 120px 0 60px; text-align: center; }
  .container { padding: 0 16px; }
  .badge-pill { font-size: 12px; padding: 6px 14px; margin-bottom: 20px; }
  .hero-title { font-size: clamp(32px, 9vw, 52px); letter-spacing: -1.5px; margin-bottom: 16px; }
  .hero-sub { font-size: 15px; margin-bottom: 28px; }
  .br-hide { display: none; }

  /* Price block */
  .hero-price-block {
    flex-direction: column; gap: 16px;
    text-align: center; padding: 20px 20px;
    width: 100%;
  }
  .price-divider { width: 60px; height: 1px; }
  .price-amount { font-size: 36px; }
  .price-later { text-align: center; }

  /* Countdown */
  .countdown-wrap { margin-bottom: 28px; }
  .countdown { gap: 5px; flex-wrap: wrap; justify-content: center; }
  .cd-box { min-width: 56px; padding: 10px 10px; border-radius: 10px; }
  .cd-box span { font-size: 20px; }
  .cd-box label { font-size: 9px; }
  .cd-sep { font-size: 18px; }

  /* CTA button */
  .btn-primary { padding: 15px 32px; font-size: 15px; width: 100%; text-align: center; }

  /* Stats */
  .hero-stats { gap: 0; margin-top: 40px; flex-wrap: wrap; }
  .stat { padding: 10px 16px; flex: 1 1 45%; }
  .stat strong { font-size: 24px; }
  .stat-sep { display: none; }

  /* Sections */
  .section { padding: 64px 0; }
  .section-title { font-size: clamp(22px, 6vw, 32px); letter-spacing: -0.5px; }
  .section-desc { font-size: 15px; margin-bottom: 36px; }

  /* Levels */
  .levels-grid { grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 32px; }
  .level-card { padding: 24px 18px; }
  .level-name { font-size: 18px; }

  /* Details */
  .details-grid { grid-template-columns: 1fr; gap: 10px; margin-top: 32px; }

  /* Curriculum */
  .curriculum-grid { grid-template-columns: 1fr; gap: 12px; margin-top: 32px; }

  /* Who grid */
  .who-grid { grid-template-columns: 1fr; gap: 8px; }
  .who-item { font-size: 14px; }

  /* FAQ */
  .faq-item summary { font-size: 14px; padding: 16px 18px; }
  .faq-item p { font-size: 14px; padding: 0 18px 16px; padding-top: 14px; }

  /* Mid CTA banners */
  .mid-cta-banner { padding: 22px 0; }
  .mid-cta-inner { flex-direction: column; align-items: flex-start; gap: 16px; }
  .mid-cta-text { text-align: left; width: 100%; }
  .mid-cta-price { font-size: 24px; }
  .mid-cta-deadline { font-size: 13px; }
  .mid-cta-inner .btn-primary { width: 100%; text-align: center; }

  /* Enroll section */
  .enroll-section { padding: 56px 0; }
  .enroll-highlight-box { flex-direction: column; margin: 20px auto 28px; border-radius: 16px; }
  .ehb-left { padding: 28px 22px; }
  .ehb-right { flex: 0 0 auto; border-top: 1px solid rgba(255,255,255,0.06); padding: 22px 22px; flex-direction: row; gap: 16px; justify-content: flex-start; }
  .ehb-divider { display: none; }
  .ehb-price { font-size: 52px; letter-spacing: -2px; }
  .ehb-after-price { font-size: 26px; }

  /* Enroll countdown */
  .enroll-countdown { gap: 5px; flex-wrap: wrap; justify-content: center; }
  .ecd-box { min-width: 60px; padding: 10px 12px; border-radius: 10px; }
  .ecd-box span { font-size: 22px; }
  .ecd-box label { font-size: 9px; }
  .ecd-sep { font-size: 20px; }
  .enroll-countdown-wrap { margin: 8px 0 24px; }

  /* Enroll button */
  .btn-enroll { padding: 16px 28px; font-size: 16px; width: 100%; text-align: center; }

  /* Trust row */
  .trust-row { gap: 12px; font-size: 12px; }

  /* Footer */
  .footer { padding: 28px 0; }
  .footer-logo { font-size: 14px; }
}

/* ---- VERY SMALL SCREENS ---- */
@media (max-width: 380px) {
  .levels-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 28px; }
  .cd-box { min-width: 48px; padding: 8px 8px; }
  .cd-box span { font-size: 18px; }
}

/* ---- HERO ANIMATIONS ---- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}
.hero > .container > * { animation: fadeUp 0.7s cubic-bezier(.22,1,.36,1) both; }
.hero > .container > *:nth-child(1) { animation-delay: 0.05s; }
.hero > .container > *:nth-child(2) { animation-delay: 0.18s; }
.hero > .container > *:nth-child(3) { animation-delay: 0.30s; }
.hero > .container > *:nth-child(4) { animation-delay: 0.42s; }
.hero > .container > *:nth-child(5) { animation-delay: 0.54s; }
.hero > .container > *:nth-child(6) { animation-delay: 0.66s; }
.hero > .container > *:nth-child(7) { animation-delay: 0.78s; }

/* ---- SCROLL REVEAL ---- */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s cubic-bezier(.22,1,.36,1), transform 0.7s cubic-bezier(.22,1,.36,1);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---- TILT CARDS (JS controlled) ---- */
.tilt-card { transform-style: preserve-3d; }