/* ========== Reset & base ========== */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; background: none; border: 0; color: inherit; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4, p { margin: 0; }

/* ========== Design tokens ========== */
:root {
  --bg: #000;
  --bg-elev: #0c0c0c;
  --text: #fff;
  --text-muted: #9a9a9a;
  --text-dim: #707070;
  --accent-purple: #8244FF;
  --accent-pink: #FF57C3;
  --accent-yellow: #FBBF24;
  --border: #1f1f1f;
  --border-strong: #292929;
  --card-bg: #0c0c0c;
  --card-hover: #141414;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --gradient-brand: linear-gradient(90deg, var(--accent-purple) 0%, var(--accent-pink) 100%);
  --gradient-brand-soft: linear-gradient(135deg, rgba(130,68,255,0.15) 0%, rgba(255,87,195,0.15) 100%);
  --shadow-card: 0 1px 2px rgba(0,0,0,0.4);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --transition: 200ms ease-out;
}

/* ========== Container ========== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
@media (max-width: 640px) {
  .container { padding: 0 16px; }
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  border-radius: var(--radius-full);
  padding: 10px 22px;
  font-size: 15px;
  transition: all var(--transition);
  white-space: nowrap;
  line-height: 1;
  cursor: pointer;
}
.btn-primary {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: 0 6px 24px -8px rgba(130,68,255,0.55), 0 2px 10px -4px rgba(255,87,195,0.3);
}
.btn-primary:hover { filter: brightness(1.1); transform: translateY(-1px); }
.btn-outline {
  background: transparent;
  color: #fff;
  border: 1px solid var(--border-strong);
}
.btn-outline:hover { background: #222; }
.btn-lg { padding: 14px 32px; font-size: 16px; }
.btn-sm { padding: 7px 16px; font-size: 14px; }

/* ========== Navigation ========== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: rgba(0,0,0,0.78);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}
.nav.scrolled {
  border-bottom-color: var(--border);
  background: rgba(0,0,0,0.92);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 24px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.nav-brand img.nav-logo {
  height: 40px;
  width: auto;
  display: block;
}
@media (max-width: 640px) {
  .nav-brand img.nav-logo { height: 32px; }
}
.nav-links {
  display: flex;
  gap: 6px;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1;
  justify-content: center;
}
.nav-link {
  padding: 8px 14px;
  color: var(--text-muted);
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-full);
  transition: color var(--transition), background var(--transition);
}
.nav-link:hover { color: #fff; background: rgba(255,255,255,0.04); }
.nav-cta { display: flex; gap: 10px; align-items: center; flex-shrink: 0; }
.nav-burger {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-full);
}
.nav-burger span {
  width: 16px; height: 2px;
  background: #fff;
  position: relative;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-burger span::before,
.nav-burger span::after {
  content: ""; position: absolute; left: 0; width: 16px; height: 2px; background: #fff;
  transition: transform var(--transition);
}
.nav-burger span::before { top: -5px; }
.nav-burger span::after { top: 5px; }
.nav-burger.open span { background: transparent; }
.nav-burger.open span::before { transform: translateY(5px) rotate(45deg); }
.nav-burger.open span::after { transform: translateY(-5px) rotate(-45deg); }

.nav-mobile {
  display: none;
  padding: 12px 0 16px;
  border-top: 1px solid var(--border);
  flex-direction: column;
  gap: 4px;
}
.nav-mobile.open { display: flex; }
.nav-mobile .nav-link { padding: 12px 14px; font-size: 16px; }

@media (max-width: 1024px) {
  .nav-links { display: none; }
  .nav-burger { display: inline-flex; }
}

/* ========== Hero ========== */
.hero {
  padding: 140px 0 80px;
  text-align: center;
  position: relative;
}
.hero::before {
  content: "";
  position: absolute;
  top: 40px; left: 50%;
  width: 720px; height: 400px;
  transform: translateX(-50%);
  background: radial-gradient(ellipse, rgba(130,68,255,0.25) 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(255,87,195,0.12);
  border: 1px solid rgba(255,87,195,0.35);
  color: var(--accent-pink);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 24px;
}
.badge-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent-pink);
  box-shadow: 0 0 8px var(--accent-pink);
}
.hero h1 {
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
}
.hero h1 .accent {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  font-size: clamp(16px, 2vw, 19px);
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 auto 40px;
}

/* Countdown */
.countdown {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}
.countdown-block {
  width: 84px;
  padding: 16px 8px;
  background: var(--card-bg);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
}
.countdown-num {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
  font-variant-numeric: tabular-nums;
}
.countdown-label {
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-top: 4px;
}
@media (max-width: 480px) {
  .countdown-block { width: 70px; padding: 12px 6px; }
  .countdown-num { font-size: 26px; }
}

/* ========== Section base ========== */
.section {
  padding: 88px 0;
  position: relative;
}
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-kicker {
  display: inline-block;
  font-size: 13px;
  color: var(--accent-pink);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  max-width: 720px;
  margin: 0 auto;
}

/* ========== Courses ========== */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 1024px) { .courses-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .courses-grid { grid-template-columns: 1fr; } }

.course-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition);
  display: flex;
  flex-direction: column;
}
.course-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
}
.course-card-cover {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  position: relative;
}
.course-card-cover img { width: 100%; height: 100%; object-fit: cover; }
.course-card-body {
  padding: 20px 22px 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}
.course-card-badge {
  display: inline-block;
  font-size: 11px;
  color: var(--accent-yellow);
  background: rgba(251,191,36,0.1);
  border: 1px solid rgba(251,191,36,0.3);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  align-self: flex-start;
}
.course-card-title {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.25;
}
.course-card-desc {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.5;
  flex: 1;
}
.course-card-price {
  display: flex;
  gap: 10px;
  align-items: baseline;
  margin-top: 6px;
}
.course-card-price-old {
  color: var(--text-dim);
  text-decoration: line-through;
  font-size: 14px;
}
.course-card-price-new {
  color: #fff;
  font-weight: 700;
  font-size: 18px;
}
.courses-footer {
  margin-top: 48px;
  text-align: center;
  color: var(--text-muted);
  font-size: 15px;
}
.courses-footer a { color: var(--accent-pink); font-weight: 600; }
.courses-footer a:hover { text-decoration: underline; }
.courses-cta { display: flex; justify-content: center; margin-top: 28px; }

/* ========== Testimonials ========== */
.testimonials-trust {
  text-align: center;
  margin-bottom: 40px;
  color: var(--text-muted);
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}
.testimonials-trust strong { color: #fff; font-weight: 600; }
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media (max-width: 900px) { .testimonials-grid { grid-template-columns: 1fr; max-width: 560px; margin: 0 auto; } }

.testimonial {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 26px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.testimonial-stars { height: 16px; }
.testimonial-quote {
  color: #e5e5e5;
  font-size: 15px;
  line-height: 1.6;
  flex: 1;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 6px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}
.testimonial-author img {
  width: 42px; height: 42px; border-radius: 50%;
}
.testimonial-author-name { font-weight: 600; font-size: 15px; }
.testimonial-author-role { color: var(--text-dim); font-size: 13px; margin-top: 2px; }

/* ========== Features ========== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media (max-width: 900px) { .features-grid { grid-template-columns: 1fr; max-width: 520px; margin: 0 auto; } }

.feature {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.feature-icon { width: 48px; height: 48px; }
.feature-kicker {
  color: var(--accent-pink);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.feature-title {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
}
.feature-desc {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.6;
}

/* ========== About ========== */
.about {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}
.about h2 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 24px;
}
.about h2 .accent {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.about p {
  color: var(--text-muted);
  font-size: 17px;
  line-height: 1.65;
}

/* ========== Final CTA ========== */
.cta-final {
  text-align: center;
  padding: 88px 0;
  position: relative;
}
.cta-final::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(130,68,255,0.14) 0%, transparent 60%);
  z-index: -1;
}
.cta-final h2 {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 20px;
}
.cta-final p {
  color: var(--text-muted);
  font-size: 18px;
  max-width: 500px;
  margin: 0 auto 36px;
}

/* ========== Footer ========== */
.footer {
  padding: 48px 0 36px;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 14px;
}
.footer-brand {
  display: flex;
  justify-content: center;
  margin-bottom: 32px;
}
.footer-brand img {
  height: 110px;
  width: auto;
  opacity: 0.92;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-legal {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-dim);
  font-size: 12px;
  line-height: 1.7;
}
.footer-legal p { margin: 2px 0; }
.footer-legal strong { color: var(--text-muted); font-weight: 600; }
@media (max-width: 640px) {
  .footer-brand img { height: 88px; }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer-legal { font-size: 11px; }
}
.footer-links { display: flex; gap: 20px; list-style: none; margin: 0; padding: 0; }
.footer-links a { color: var(--text-dim); transition: color var(--transition); }
.footer-links a:hover { color: #fff; }
.footer-socials { display: flex; gap: 12px; }
.footer-socials a {
  width: 36px; height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text-muted);
  transition: color var(--transition), border-color var(--transition);
}
.footer-socials a:hover { color: #fff; border-color: var(--border-strong); }
.footer-socials svg { width: 16px; height: 16px; fill: currentColor; }

/* ========== Utility ========== */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}