/* ============================================================
   ЗАГОВОРИЛ — REV-2 Kinetic CSS
   School: Editorial Brutalism (Electric variant) — KINETIC, BOLD, IN-YOUR-FACE
   Canvas: near-black (#0A0A0A) + hot coral accent (#FF3B5C)
   Display: Space Grotesk 700 (Cyrillic-native, geometric, sharp)
   Body:    Manrope 400–700 (Cyrillic-native, modern humanist)
   Mono:    JetBrains Mono 500 (numerals, eyebrows)
   Energy:  marquees, magnetic CTAs, oversized typography, alternating bg,
            scroll reveals (driven by /assets/script.js .js-anim hooks)
   ============================================================ */

/* -- 1. tokens ---------------------------------------------- */
:root {
  --bg: #0A0A0A;
  --bg-alt: #141414;
  --bg-invert: #FAFAFA;
  --surface: #1A1A1A;
  --surface-2: #242424;
  --text: #F5F5F5;
  --text-dim: #C4C4C4;
  --text-muted: #888888;
  --text-invert: #0A0A0A;

  --accent: #FF3B5C;
  --accent-hover: #FF1F44;
  --accent-soft: rgba(255, 59, 92, 0.12);
  --accent-border: rgba(255, 59, 92, 0.4);

  --border: rgba(255, 255, 255, 0.10);
  --border-strong: rgba(255, 255, 255, 0.20);

  --gutter: clamp(20px, 4vw, 56px);
  --max-w: 1280px;

  --r-sm: 4px;
  --r-md: 10px;
  --r-lg: 18px;
  --r-pill: 999px;

  --ease: cubic-bezier(.22, .61, .36, 1);
  --ease-spring: cubic-bezier(.34, 1.56, .64, 1);
  --t-fast: 160ms;
  --t-base: 280ms;
  --t-slow: 480ms;

  --shadow-pop: 0 18px 40px -10px rgba(255, 59, 92, 0.45);
}

/* -- 2. reset ----------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
img, svg, video { display: block; max-width: 100%; height: auto; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }

/* -- 3. base ------------------------------------------------ */
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Manrope', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.55;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

::selection { background: var(--accent); color: #fff; }

/* -- 4. layout primitives ----------------------------------- */
.section {
  position: relative;
  padding: clamp(72px, 11vh, 140px) 0;
}
.section + .section { border-top: 1px solid var(--border); }
.section__content {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.section__title {
  font-family: 'Space Grotesk', system-ui, sans-serif;
  font-weight: 700;
  font-size: clamp(2.25rem, 7.5vw, 5rem);
  line-height: 0.94;
  letter-spacing: -0.035em;
  text-transform: uppercase;
  margin-bottom: clamp(28px, 4vw, 56px);
  text-wrap: balance;
}

/* alternating section backgrounds — ритм */
.section.benefits     { background: var(--bg-alt); }
.section.methodology  { background: var(--bg); }
.section.teachers     { background: var(--bg-alt); }
.section.pricing      { background: var(--bg); }
.section.cta-section  { background: var(--accent); color: var(--text-invert); }

/* -- 5. nav ------------------------------------------------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100; /* always above hero (z 0–2), decorations, marquees */
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px var(--gutter);
  background: transparent;
  transition: background-color var(--t-base) var(--ease),
              backdrop-filter var(--t-base) var(--ease),
              border-color var(--t-base) var(--ease),
              padding var(--t-base) var(--ease);
  border-bottom: 1px solid transparent;
}
.nav--scrolled {
  background: rgba(10, 10, 10, 0.82);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--border);
  padding-top: 12px;
  padding-bottom: 12px;
}
.nav__logo {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  position: relative;
}
.nav__logo::after {
  content: '';
  display: inline-block;
  width: 8px; height: 8px;
  margin-left: 2px;
  border-radius: 50%;
  background: var(--accent);
  vertical-align: 0.1em;
  animation: pulse 2.4s ease-in-out infinite;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 28px);
}
.nav__links a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-dim);
  letter-spacing: 0.01em;
  transition: color var(--t-fast) var(--ease);
  position: relative;
}
.nav__links a:hover { color: var(--text); }
.nav__links a:not(.nav__cta)::after {
  content: '';
  position: absolute;
  left: 0; bottom: -4px;
  height: 2px; width: 0;
  background: var(--accent);
  transition: width var(--t-base) var(--ease);
}
.nav__links a:not(.nav__cta):hover::after { width: 100%; }

.nav__cta {
  background: var(--accent);
  color: #fff !important;
  padding: 10px 20px;
  border-radius: var(--r-pill);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.8125rem;
  transition: transform var(--t-fast) var(--ease),
              background-color var(--t-fast) var(--ease),
              box-shadow var(--t-base) var(--ease);
}
.nav__cta:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-pop);
}
.nav__cta::after { display: none !important; }

.nav__actions {
  display: flex;
  align-items: center;
}

/* mobile burger (rendered server-side or via JS later — CSS-ready) */
.nav__burger {
  display: none;
  width: 40px; height: 40px;
  position: relative;
}
.nav__burger span {
  position: absolute;
  left: 8px;
  width: 24px; height: 2px;
  background: var(--text);
  transition: transform var(--t-base) var(--ease), opacity var(--t-fast) var(--ease);
}
.nav__burger span:nth-child(1) { top: 14px; }
.nav__burger span:nth-child(2) { top: 20px; }
.nav__burger span:nth-child(3) { top: 26px; }

/* -- 6. hero ------------------------------------------------ */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding-top: 96px;
  padding-bottom: clamp(64px, 10vh, 120px);
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 50% at 80% 20%, rgba(255, 59, 92, 0.18), transparent 60%),
    radial-gradient(ellipse 60% 40% at 10% 90%, rgba(255, 59, 92, 0.10), transparent 55%),
    var(--bg);
}
.hero::before {
  content: '';
  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;
  -webkit-mask-image: radial-gradient(ellipse 100% 100% at 50% 50%, #000 30%, transparent 80%);
          mask-image: radial-gradient(ellipse 100% 100% at 50% 50%, #000 30%, transparent 80%);
  pointer-events: none;
  z-index: 0;
}
.hero__decoration {
  position: absolute;
  right: -60px;
  top: 50%;
  transform: translateY(-50%);
  width: clamp(280px, 40vw, 560px);
  color: var(--accent);
  opacity: 0.6;
  pointer-events: none;
  z-index: 1;
  filter: drop-shadow(0 0 30px rgba(255, 59, 92, 0.25));
}
.hero__decoration svg { width: 100%; height: auto; }

.hero .section__content {
  position: relative;
  z-index: 2;
  max-width: 1180px;
}
.hero__title {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: clamp(3.5rem, 14vw, 11rem);
  line-height: 0.88;
  letter-spacing: -0.045em;
  text-transform: uppercase;
  text-wrap: balance;
  margin-bottom: clamp(20px, 3vw, 36px);
  color: var(--text);
}
/* accent word styled if HTML adds <span class="hero__accent"> or <em> */
.hero__title .hero__accent,
.hero__title em {
  color: var(--accent);
  font-style: normal;
  display: inline-block;
  position: relative;
}
.hero__title .hero__accent::after,
.hero__title em::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 6%;
  height: 0.12em;
  background: var(--accent);
  opacity: 0;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-slow) var(--ease), opacity var(--t-fast) var(--ease);
}
.hero.is-ready .hero__title .hero__accent::after,
.hero.is-ready .hero__title em::after {
  opacity: 0.5;
  transform: scaleX(1);
  transition-delay: 0.55s;
}

.hero__subtitle {
  font-size: clamp(1.125rem, 2vw, 1.4375rem);
  line-height: 1.45;
  color: var(--text-dim);
  max-width: 36ch;
  margin-bottom: clamp(28px, 4vw, 44px);
  font-weight: 500;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--accent);
  color: #fff;
  padding: 22px 40px;
  border-radius: var(--r-pill);
  font-family: 'Manrope', sans-serif;
  font-weight: 800;
  font-size: 1.0625rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: transform var(--t-fast) var(--ease),
              background-color var(--t-fast) var(--ease),
              box-shadow var(--t-base) var(--ease);
  box-shadow: 0 12px 28px -8px rgba(255, 59, 92, 0.55);
  position: relative;
  isolation: isolate;
}
.hero__cta::before {
  content: '';
  position: absolute;
  inset: -6px;
  border: 1.5px solid var(--accent);
  border-radius: var(--r-pill);
  opacity: 0.3;
  z-index: -1;
  transition: inset var(--t-base) var(--ease), opacity var(--t-base) var(--ease);
}
.hero__cta:hover {
  background: var(--accent-hover);
  transform: scale(1.045);
  box-shadow: 0 18px 40px -10px rgba(255, 59, 92, 0.7);
}
.hero__cta:hover::before { inset: -10px; opacity: 0.5; }
.hero__cta:active { transform: scale(0.98); }

/* -- 7. marquee --------------------------------------------- */
/* hooks for any .marquee section the dev may add — also used between sections */
.marquee,
.section-divider {
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  padding: 22px 0;
}
.marquee__track,
.section-divider__track {
  display: inline-flex;
  align-items: center;
  gap: 56px;
  animation: marquee 28s linear infinite;
  will-change: transform;
}
.marquee__item,
.section-divider__item {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: clamp(1.5rem, 3.5vw, 2.5rem);
  text-transform: uppercase;
  letter-spacing: -0.01em;
  color: var(--text);
  padding-right: 56px;
  position: relative;
}
.marquee__item::after,
.section-divider__item::after {
  content: '·';
  position: absolute;
  right: 14px;
  color: var(--accent);
  font-size: 1em;
}
.marquee__item--accent,
.section-divider__item--accent { color: var(--accent); }
.marquee:hover .marquee__track,
.section-divider:hover .section-divider__track { animation-play-state: paused; }

@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* -- 8. benefits grid --------------------------------------- */
.benefits__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  overflow: hidden;
}
.benefits__item {
  background: var(--bg-alt);
  padding: clamp(28px, 3.5vw, 44px);
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: background-color var(--t-base) var(--ease), color var(--t-base) var(--ease);
  position: relative;
}
.benefits__item:hover {
  background: var(--accent);
  color: var(--text-invert);
}
.benefits__item:hover .benefits__icon { color: var(--text-invert); }
.benefits__item:hover h3 { color: var(--text-invert); }
.benefits__item:hover p { color: rgba(10, 10, 10, 0.8); }

.benefits__icon {
  color: var(--accent);
  width: 56px; height: 56px;
  display: grid;
  place-items: center;
  border: 1.5px solid currentColor;
  border-radius: var(--r-md);
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-weight: 700;
  font-size: 1.375rem;
  line-height: 1;
  transition: color var(--t-base) var(--ease), border-color var(--t-base) var(--ease);
}
.benefits__icon svg { width: 32px; height: 32px; }
.benefits__item h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.375rem;
  line-height: 1.15;
  letter-spacing: -0.015em;
  text-transform: uppercase;
}
.benefits__item p {
  color: var(--text-dim);
  font-size: 0.9375rem;
  line-height: 1.55;
}

/* -- 9. methodology ----------------------------------------- */
.methodology__subtitle {
  font-size: clamp(1.0625rem, 1.6vw, 1.25rem);
  color: var(--text-dim);
  max-width: 56ch;
  margin-bottom: clamp(40px, 5vw, 64px);
  line-height: 1.55;
}
.methodology__steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0;
  border-top: 1px solid var(--border);
}
.methodology__step {
  position: relative;
  padding: clamp(28px, 3.5vw, 44px) clamp(20px, 2.5vw, 32px);
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
  transition: background-color var(--t-base) var(--ease);
}
.methodology__step:last-child { border-right: 1px solid var(--border); }
.methodology__step:hover { background: var(--surface); }
.methodology__step:hover .methodology__step-number { color: var(--accent); transform: translateX(4px); }

.methodology__step-number {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-muted);
  display: inline-block;
  margin-bottom: 14px;
  transition: color var(--t-base) var(--ease), transform var(--t-base) var(--ease);
}
.methodology__step h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  line-height: 1.05;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.methodology__step p {
  color: var(--text-dim);
  font-size: 0.9375rem;
  line-height: 1.55;
}

/* -- 10. teachers ------------------------------------------- */
.teachers__subtitle {
  font-size: clamp(1.0625rem, 1.6vw, 1.25rem);
  color: var(--text-dim);
  max-width: 56ch;
  margin-bottom: clamp(40px, 5vw, 64px);
  line-height: 1.55;
}
.teachers__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(16px, 2.5vw, 28px);
}
.teacher-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: clamp(28px, 3vw, 36px);
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: transform var(--t-base) var(--ease),
              border-color var(--t-base) var(--ease),
              background-color var(--t-base) var(--ease);
}
.teacher-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-border);
  background: var(--surface-2);
}

.teacher-card__avatar {
  color: var(--accent);
  width: 80px; height: 80px;
}
.teacher-card__name {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
  text-transform: uppercase;
  letter-spacing: -0.02em;
}
.teacher-card__desc {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 500;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
}
.teacher-card__quote {
  font-size: 1rem;
  line-height: 1.55;
  color: var(--text-dim);
  font-style: normal;
  padding-left: 16px;
  border-left: 2px solid var(--accent);
  margin-top: 8px;
}

/* -- 11. pricing -------------------------------------------- */
.pricing__subtitle {
  font-size: clamp(1.0625rem, 1.6vw, 1.25rem);
  color: var(--text-dim);
  max-width: 56ch;
  margin-bottom: clamp(40px, 5vw, 64px);
  line-height: 1.55;
}
.pricing__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(16px, 2.5vw, 28px);
  align-items: stretch;
}
.price-card {
  position: relative;
  background: var(--bg-alt);
  border: 2px solid var(--border-strong);
  border-radius: var(--r-lg);
  padding: clamp(28px, 3vw, 40px);
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: transform var(--t-base) var(--ease),
              border-color var(--t-base) var(--ease),
              background-color var(--t-base) var(--ease),
              color var(--t-base) var(--ease);
}
.price-card:hover {
  border-color: var(--accent);
  transform: translateY(-6px);
  box-shadow: 0 20px 50px -16px rgba(255, 59, 92, 0.45);
}
.price-card--featured {
  background: var(--accent);
  color: var(--text-invert);
  border-color: var(--accent);
  transform: scale(1.03);
  z-index: 1;
}
.price-card--featured:hover {
  background: var(--accent-hover);
  transform: scale(1.05) translateY(-4px);
  box-shadow: 0 26px 60px -16px rgba(255, 59, 92, 0.55);
}
.price-card__badge {
  position: absolute;
  top: -14px; left: 50%;
  transform: translateX(-50%);
  background: var(--bg);
  color: var(--accent);
  border: 1.5px solid var(--accent);
  padding: 6px 14px;
  border-radius: var(--r-pill);
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  white-space: nowrap;
}
.price-card__name {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
  text-transform: uppercase;
  letter-spacing: -0.02em;
}
.price-card__price {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: clamp(2.25rem, 4.5vw, 3.25rem);
  line-height: 1;
  letter-spacing: -0.04em;
  margin-top: 4px;
}
.price-card--featured .price-card__price { color: var(--text-invert); }
.price-card__per {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0;
}
.price-card--featured .price-card__per { color: rgba(10, 10, 10, 0.65); }
.price-card__period {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 500;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}
.price-card--featured .price-card__period { color: rgba(10, 10, 10, 0.7); }

.price-card__features {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 12px 0 8px;
  flex: 1;
}
.price-card__features li {
  font-size: 0.9375rem;
  line-height: 1.45;
  padding-left: 22px;
  position: relative;
  color: var(--text-dim);
}
.price-card__features li::before {
  content: '';
  position: absolute;
  left: 0; top: 0.55em;
  width: 12px; height: 2px;
  background: var(--accent);
}
.price-card--featured .price-card__features li { color: rgba(10, 10, 10, 0.85); }
.price-card--featured .price-card__features li::before { background: var(--text-invert); }

.price-card__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: var(--r-pill);
  background: transparent;
  color: var(--text);
  border: 2px solid var(--accent);
  font-family: 'Manrope', sans-serif;
  font-weight: 700;
  font-size: 0.9375rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: background-color var(--t-fast) var(--ease),
              color var(--t-fast) var(--ease),
              transform var(--t-fast) var(--ease);
}
.price-card__cta:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-1px);
}
.price-card--featured .price-card__cta {
  background: var(--text-invert);
  color: var(--accent);
  border-color: var(--text-invert);
}
.price-card--featured .price-card__cta:hover {
  background: var(--bg);
  color: #fff;
  border-color: var(--bg);
}

.price-card__footer {
  margin-top: auto;
  padding-top: 16px;
}

/* -- 12. final CTA ------------------------------------------ */
.cta-section {
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 80%, rgba(0, 0, 0, 0.08) 1px, transparent 1.5px),
    radial-gradient(circle at 80% 20%, rgba(0, 0, 0, 0.06) 1px, transparent 1.5px);
  background-size: 32px 32px, 48px 48px;
  pointer-events: none;
  opacity: 0.6;
}
.cta-section .section__content { position: relative; z-index: 1; max-width: 880px; }
.cta-section__title {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: clamp(2.5rem, 8vw, 5.5rem);
  line-height: 0.95;
  text-transform: uppercase;
  letter-spacing: -0.04em;
  margin-bottom: 18px;
  text-wrap: balance;
}
.cta-section__subtitle {
  font-size: clamp(1.0625rem, 1.8vw, 1.25rem);
  margin-bottom: clamp(28px, 4vw, 44px);
  color: rgba(10, 10, 10, 0.78);
  font-weight: 500;
}
.cta-section__button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--bg);
  color: #fff;
  padding: 22px 44px;
  border-radius: var(--r-pill);
  font-family: 'Manrope', sans-serif;
  font-weight: 800;
  font-size: 1.125rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: transform var(--t-fast) var(--ease),
              background-color var(--t-fast) var(--ease),
              box-shadow var(--t-base) var(--ease),
              color var(--t-fast) var(--ease);
  box-shadow: 0 16px 32px -10px rgba(0, 0, 0, 0.5);
  border: 2px solid var(--bg);
}
.cta-section__button:hover {
  background: transparent;
  color: var(--bg);
  transform: scale(1.04);
  box-shadow: 0 22px 50px -16px rgba(0, 0, 0, 0.5);
}
.cta-section__button:active { transform: scale(0.98); }

.cta-section__actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(28px, 4vw, 40px);
}

.cta-section__contacts {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}
.cta-section__contact {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: var(--r-pill);
  border: 1.5px solid rgba(10, 10, 10, 0.5);
  color: var(--bg);
  font-weight: 700;
  font-size: 0.9375rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  transition: background-color var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease),
              color var(--t-fast) var(--ease);
}
.cta-section__contact:hover {
  background: var(--bg);
  border-color: var(--bg);
  color: var(--accent);
}
.cta-section__contact svg { width: 18px; height: 18px; }

/* -- 13. footer --------------------------------------------- */
.footer {
  background: var(--bg);
  color: var(--text);
  padding: clamp(48px, 7vh, 88px) 0 32px;
  border-top: 1px solid var(--border);
}
.footer__content {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  flex-direction: column;
  gap: 28px;
  align-items: flex-start;
}
.footer__tagline {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: clamp(1.25rem, 3vw, 1.875rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
  max-width: 36ch;
  text-wrap: balance;
}
.footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}
.footer__links a {
  font-size: 0.9375rem;
  color: var(--text-dim);
  font-weight: 500;
  transition: color var(--t-fast) var(--ease);
  position: relative;
}
.footer__links a:hover { color: var(--accent); }
.footer__copy {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 500;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 8px;
}

/* -- 14. animations ----------------------------------------- */
@keyframes pulse {
  0%, 100% { transform: scale(1);   opacity: 1;   }
  50%      { transform: scale(1.4); opacity: 0.6; }
}

/* reveal hooks (script.js sets .is-visible / .is-ready) */
.js-anim .section { opacity: 0; transform: translateY(28px); transition: opacity .65s var(--ease), transform .65s var(--ease); }
.js-anim .section.is-visible { opacity: 1; transform: none; }
.js-anim .stagger-child { opacity: 0; transform: translateY(20px); transition: opacity .55s var(--ease), transform .55s var(--ease); }
.js-anim .stagger-child.is-visible { opacity: 1; transform: none; }

/* hero entrance keyframes (existing script.js injects matching rules; this is the static fallback) */
.js-anim .hero__title,
.js-anim .hero__subtitle,
.js-anim .hero__cta { opacity: 0; transform: translateY(24px); }
.js-anim .hero.is-ready .hero__title    { animation: zg-rise .8s .05s var(--ease) both; }
.js-anim .hero.is-ready .hero__subtitle { animation: zg-rise .8s .25s var(--ease) both; }
.js-anim .hero.is-ready .hero__cta      { animation: zg-rise .8s .45s var(--ease) both; }
@keyframes zg-rise { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }

/* -- 14b. button & CTA safety (REV-2 founder fix) ----------- */
/* Keep all hover transforms centered and inside their bounding box.
   Prevents CTAs from drifting onto neighbours and locks scale to <=1.05. */
.hero__cta,
.cta-section__button,
.price-card__cta,
.nav__cta,
.cta-section__contact,
.price-card,
.price-card--featured,
.teacher-card,
.benefits__item,
.methodology__step {
  transform-origin: center center;
  will-change: transform;
}

/* Adjacent CTA breathing room — works whether siblings are buttons or links */
.hero__cta + .hero__cta,
.cta-section__button + .cta-section__button,
.price-card__cta + .price-card__cta,
.cta-section__contact + .cta-section__contact,
.btn-magnetic + .btn-magnetic {
  margin-top: 1rem;
}

/* Price-card CTA stays inside the card padding even on hover translate */
.price-card { isolation: isolate; }
.price-card__cta { position: relative; z-index: 1; }

/* -- 15. responsive ----------------------------------------- */

/* tablet — 1024 down */
@media (max-width: 1024px) {
  .hero__decoration { right: -100px; opacity: 0.45; width: 360px; }
  .price-card--featured { transform: scale(1.02); }
  .price-card--featured:hover { transform: scale(1.04) translateY(-4px); }
}

/* small tablet — 900 down */
@media (max-width: 900px) {
  .methodology__steps {
    grid-template-columns: repeat(2, 1fr);
  }
  .methodology__step:nth-child(2n) { border-right: none; }
  .nav__links { gap: 14px; }
}

/* mobile — 768 down */
@media (max-width: 768px) {
  body { font-size: 16px; }
  .hero {
    align-items: flex-start;
    padding-top: 120px;
  }
  .hero__decoration {
    top: auto;
    bottom: -80px;
    right: -120px;
    transform: none;
    width: 320px;
    opacity: 0.32;
  }
  .hero__title { font-size: clamp(2.75rem, 13vw, 4.5rem); }
  .hero__subtitle { font-size: 1.0625rem; }
  .hero__cta { padding: 18px 32px; font-size: 1rem; width: 100%; justify-content: center; }
  .nav { padding: 14px var(--gutter); }
  .nav__links {
    position: fixed;
    top: 60px; right: -100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
    padding: 32px var(--gutter);
    background: rgba(10, 10, 10, 0.96);
    backdrop-filter: blur(16px);
    border-top: 1px solid var(--border);
    width: 100%;
    height: calc(100vh - 60px);
    transition: right var(--t-base) var(--ease);
  }
  .nav--open .nav__links { right: 0; }
  .nav__burger { display: block; }
  .nav--open .nav__burger span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .nav--open .nav__burger span:nth-child(2) { opacity: 0; }
  .nav--open .nav__burger span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
  .nav__actions {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px var(--gutter);
    background: rgba(10, 10, 10, 0.98);
    border-top: 1px solid var(--border);
    z-index: 101;
    display: none;
  }
  .nav--open .nav__actions {
    display: flex;
  }
  .nav__actions .nav__cta { width: 100%; text-align: center; justify-content: center; }

  .section { padding: 64px 0; }
  .section__title { font-size: clamp(2rem, 9vw, 3rem); margin-bottom: 28px; }

  .benefits__grid { grid-template-columns: 1fr; }
  .methodology__steps { grid-template-columns: 1fr; }
  .methodology__step { border-right: none !important; }
  .teachers__grid { grid-template-columns: 1fr; }

  .pricing__grid { grid-template-columns: 1fr; gap: 20px; }
  .price-card--featured { transform: none; }
  .price-card--featured:hover { transform: translateY(-4px); }

  .cta-section__button { padding: 18px 32px; font-size: 1rem; width: 100%; justify-content: center; }
  .cta-section__contacts { flex-direction: column; width: 100%; }
  .cta-section__contact { justify-content: center; }

  .marquee__item, .section-divider__item { font-size: 1.5rem; padding-right: 32px; }
  .marquee__track, .section-divider__track { gap: 32px; }

  .footer__content { gap: 20px; }
}

/* small mobile — 480 down */
@media (max-width: 480px) {
  :root { --gutter: 18px; }
  .hero { padding-top: 104px; }
  .hero__title { font-size: clamp(2.5rem, 14vw, 3.75rem); letter-spacing: -0.04em; }
  .nav__logo { font-size: 1rem; }
  .price-card { padding: 24px 20px; }
  .teacher-card { padding: 24px 20px; }
  .methodology__step { padding: 28px 20px; }

  /* button siblings must stack vertically with a guaranteed gap */
  .cta-section__contacts { flex-direction: column; gap: 0.75rem; width: 100%; }
  .footer__links { flex-direction: column; gap: 0.75rem; align-items: flex-start; }

  /* damp hover scale on small screens — avoids any neighbour clipping */
  .price-card:hover { transform: translateY(-3px); }
  .teacher-card:hover { transform: translateY(-3px); }
  .hero__cta:hover { transform: scale(1.025); }
  .cta-section__button:hover { transform: scale(1.025); }
}

/* -- 16. accessibility -------------------------------------- */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}
.nav__cta:focus-visible,
.hero__cta:focus-visible,
.cta-section__button:focus-visible,
.price-card__cta:focus-visible {
  outline-offset: 5px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .marquee__track, .section-divider__track { animation: none !important; transform: none !important; }
  .nav__logo::after { animation: none !important; }
}

/* high-contrast user preference */
@media (prefers-contrast: more) {
  :root {
    --text-dim: #FFFFFF;
    --text-muted: #DDDDDD;
    --border: rgba(255, 255, 255, 0.3);
    --border-strong: rgba(255, 255, 255, 0.5);
  }
}