/* ============================================
   NAUKO.PRO — Landing Page Styles
   Variant A: «Чистая Наука»
   White + Dark Blue + Electric Blue Accent
   ============================================ */

/* --- CSS Variables --- */
:root {
  --color-bg: #FFFFFF;
  --color-bg-subtle: #F7F8FA;
  --color-bg-muted: #EEF0F4;
  --color-text: #1A1A2E;
  --color-text-secondary: #5A5E72;
  --color-text-tertiary: #8A8FA3;
  --color-accent: #0066FF;
  --color-accent-hover: #0052CC;
  --color-accent-light: #E8F0FF;
  --color-border: #E2E4EA;
  --color-card-bg: #FFFFFF;
  --color-card-border: #E8E9EE;
  --color-popular-bg: #1A1A2E;
  --color-popular-text: #FFFFFF;

  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3.25rem;

  --line-height-tight: 1.15;
  --line-height-snug: 1.3;
  --line-height-normal: 1.6;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px rgba(0,0,0,.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.1);
  --shadow-xl: 0 20px 60px rgba(0,0,0,.12);

  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  --container-max: 1120px;
  --container-padding: 24px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

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

button {
  border: none;
  background: none;
  cursor: pointer;
  font: inherit;
  color: inherit;
}

/* --- Container --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* --- Section shared --- */
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
}

.section-tag {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  line-height: var(--line-height-tight);
  color: var(--color-text);
  margin-bottom: 16px;
}

.section-desc {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-normal);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: var(--font-size-sm);
  border-radius: var(--radius-md);
  padding: 12px 24px;
  transition: all var(--transition-base);
  white-space: nowrap;
  cursor: pointer;
}

.btn--sm {
  padding: 8px 16px;
  font-size: var(--font-size-xs);
}

.btn--lg {
  padding: 16px 32px;
  font-size: var(--font-size-base);
  border-radius: var(--radius-lg);
}

.btn--full {
  width: 100%;
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
}
.btn--primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0,102,255,.3);
}

.btn--outline {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}
.btn--outline:hover {
  border-color: var(--color-text);
  background: var(--color-bg-subtle);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-secondary);
  padding: 8px 12px;
}
.btn--ghost:hover {
  color: var(--color-text);
}

.btn--white {
  background: #fff;
  color: var(--color-text);
}
.btn--white:hover {
  background: #F0F0F0;
  transform: translateY(-1px);
}

/* ===== NAVIGATION ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-base);
}

.nav--scrolled {
  border-bottom-color: var(--color-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 2px;
  font-weight: 700;
  font-size: var(--font-size-xl);
  color: var(--color-text);
}

.nav__logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-weight: 800;
  margin-right: 6px;
}

.nav__logo-dot {
  color: var(--color-accent);
}

.nav__links {
  display: flex;
  gap: 32px;
}

.nav__link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}
.nav__link:hover {
  color: var(--color-text);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.nav__burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.nav__burger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav__burger.active span:nth-child(2) {
  opacity: 0;
}
.nav__burger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile menu */
.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 16px var(--container-padding) 24px;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.mobile-menu.active {
  display: flex;
}

.mobile-menu__link {
  padding: 12px 0;
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-bg-muted);
}
.mobile-menu__link:last-of-type {
  border-bottom: none;
}

/* ===== HERO ===== */
.hero {
  padding: 140px 0 0;
  text-align: center;
  overflow: hidden;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 102, 255, 0.06);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(0, 102, 255, 0.12);
  padding: 6px 16px;
  background: var(--color-accent-light);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-accent);
  margin-bottom: 24px;
}

.hero__badge-dot {
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .4; }
}

.hero__title {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  line-height: var(--line-height-tight);
  margin-bottom: 20px;
}

.text-accent {
  color: var(--color-accent);
}

.hero__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: var(--line-height-normal);
}

.hero__cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 32px;
}

.hero__proof {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 64px;
}

.hero__proof-avatars {
  display: flex;
}

.avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  margin-left: -8px;
}
.avatar:first-child { margin-left: 0; }

.hero__proof-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}
.hero__proof-text strong {
  color: var(--color-text);
}

/* Hero visual card */
.hero__visual {
  max-width: 800px;
  margin: 0 auto;
}

.hero__card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  text-align: left;
}

.hero__card-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-subtle);
}

.hero__card-dots {
  display: flex;
  gap: 6px;
}
.hero__card-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-border);
}
.hero__card-dots span:first-child { background: #FF5F57; }
.hero__card-dots span:nth-child(2) { background: #FEBC2E; }
.hero__card-dots span:nth-child(3) { background: #28C840; }

.hero__card-tab {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  font-weight: 500;
}

.hero__card-body {
  padding: 28px 24px;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.hero__card-line {
  height: 10px;
  background: var(--color-bg-muted);
  border-radius: 6px;
  margin-bottom: 10px;
}
.hero__card-line--heading {
  height: 16px;
  width: 80%;
  background: var(--color-text);
  opacity: .12;
  margin-bottom: 20px;
}
.hero__card-line--short { width: 45%; }
.hero__card-line--medium { width: 65%; }

.hero__card-ai {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: var(--color-accent-light);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--color-accent);
  margin: 8px 0 14px;
}

.hero__card-ai-dot {
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  animation: pulse 1.5s ease-in-out infinite;
}

/* ===== LOGOS ===== */
.logos {
  padding: 64px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.logos__label {
  text-align: center;
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 500;
  margin-bottom: 28px;
}

.logos__row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}

.logos__item {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-tertiary);
  opacity: .45;
  transition: opacity var(--transition-base);
}
.logos__item:hover { opacity: .7; }

/* ===== FEATURES ===== */
.features {
  padding: 120px 0;
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  padding: 32px 28px;
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  background: var(--color-card-bg);
  transition: all var(--transition-base);
}

.feature-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent), var(--shadow-md);
  transform: translateY(-2px);
}

.feature-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-light);
  color: var(--color-accent);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
}

.feature-card__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-card__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-normal);
}

/* ===== HOW IT WORKS ===== */
.how {
  padding: 120px 0;
  background: var(--color-bg-subtle);
}

.how__steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.step {
  padding: 32px 28px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  position: relative;
}

.step__number {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  color: var(--color-accent);
  opacity: .15;
  line-height: 1;
  margin-bottom: 16px;
}

.step__title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: 8px;
}

.step__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-normal);
}

/* ===== STATS ===== */
.stats {
  padding: 80px 0;
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat__value {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--color-accent);
  margin-bottom: 4px;
}

.stat__label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ===== PRICING ===== */
.pricing {
  padding: 120px 0;
  background: var(--color-bg-subtle);
}

.pricing__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}

.price-card {
  padding: 36px 28px;
  background: var(--color-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-xl);
  position: relative;
  transition: all var(--transition-base);
}

.price-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* Popular card */
.price-card--popular {
  background: var(--color-popular-bg);
  color: var(--color-popular-text);
  border-color: transparent;
  box-shadow: var(--shadow-xl);
}

.price-card--popular .price-card__desc {
  color: rgba(255,255,255,.6);
}

.price-card--popular .price-card__features li {
  color: rgba(255,255,255,.85);
}

.price-card__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 16px;
  background: var(--color-accent);
  color: #fff;
  font-size: var(--font-size-xs);
  font-weight: 700;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.price-card__header {
  margin-bottom: 20px;
}

.price-card__name {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: 4px;
}

.price-card__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.price-card__price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 28px;
}

.price-card__amount {
  font-size: var(--font-size-4xl);
  font-weight: 800;
}

.price-card__period {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}
.price-card--popular .price-card__period {
  color: rgba(255,255,255,.5);
}

.price-card__features {
  margin-bottom: 28px;
}

.price-card__features li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-bg-muted);
}
.price-card--popular .price-card__features li {
  border-bottom-color: rgba(255,255,255,.08);
}
.price-card__features li:last-child {
  border-bottom: none;
}

.price-card__features li svg {
  flex-shrink: 0;
}

/* ===== FAQ ===== */
.faq {
  padding: 120px 0;
}

.faq__list {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-item__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 20px 0;
  font-size: var(--font-size-base);
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.faq-item__trigger:hover {
  color: var(--color-accent);
}

.faq-item__chevron {
  flex-shrink: 0;
  transition: transform var(--transition-base);
  color: var(--color-text-tertiary);
}

.faq-item.active .faq-item__chevron {
  transform: rotate(180deg);
}

.faq-item__body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow), padding var(--transition-slow);
}

.faq-item.active .faq-item__body {
  max-height: 300px;
  padding-bottom: 20px;
}

.faq-item__body p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-normal);
}

/* ===== CTA ===== */
.cta {
  padding: 120px 0;
}

.cta__inner {
  text-align: center;
  padding: 80px 40px;
  background: var(--color-bg-subtle);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
}

.cta__title {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  line-height: var(--line-height-tight);
  margin-bottom: 16px;
}

.cta__desc {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 480px;
  margin: 0 auto 32px;
}

.cta__note {
  margin-top: 16px;
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

/* ===== FOOTER ===== */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer__left {
  display: flex;
  align-items: center;
  gap: 24px;
}

.footer__copy {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

.footer__links {
  display: flex;
  gap: 24px;
}

.footer__links a {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  transition: color var(--transition-fast);
}
.footer__links a:hover {
  color: var(--color-text);
}

/* ===== 3D CANVAS OVERLAYS ===== */
#hero-canvas,
#features-canvas,
#pricing-canvas,
#cta-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.hero {
  position: relative;
  overflow: hidden;
}

.hero .container,
.hero .hero__inner {
  position: relative;
  z-index: 2;
}

/* ===== PARTICLES ===== */
.hero__particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}

.particle {
  position: absolute;
  border-radius: 50%;
  background: var(--color-accent);
  opacity: 0;
  animation: particleFloat linear infinite;
}

@keyframes particleFloat {
  0% {
    opacity: 0;
    transform: translateY(100%) scale(0);
  }
  10% {
    opacity: 0.6;
  }
  90% {
    opacity: 0.3;
  }
  100% {
    opacity: 0;
    transform: translateY(-100vh) scale(1);
  }
}

/* ===== GLASSMORPHISM CARDS ===== */
.glass {
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

/* ===== GLOW EFFECTS ===== */
.glow-accent {
  box-shadow: 0 0 20px rgba(0, 102, 255, 0.15), 0 0 60px rgba(0, 102, 255, 0.08);
}

.glow-accent:hover {
  box-shadow: 0 0 30px rgba(0, 102, 255, 0.25), 0 0 80px rgba(0, 102, 255, 0.12);
}

/* ===== HERO GRADIENT BG ===== */
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at 30% 50%, rgba(0, 102, 255, 0.06) 0%, transparent 50%),
              radial-gradient(ellipse at 70% 20%, rgba(0, 200, 255, 0.04) 0%, transparent 50%),
              radial-gradient(ellipse at 50% 80%, rgba(99, 102, 241, 0.05) 0%, transparent 50%);
  animation: heroGlow 15s ease-in-out infinite alternate;
  z-index: 0;
}

@keyframes heroGlow {
  0% { transform: translate(0, 0) rotate(0deg); }
  33% { transform: translate(-3%, 2%) rotate(2deg); }
  66% { transform: translate(2%, -1%) rotate(-1deg); }
  100% { transform: translate(-1%, 3%) rotate(1deg); }
}

/* ===== FLOATING MORPH BLOB ===== */
.hero__blob {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.08), rgba(0, 200, 255, 0.05));
  top: 10%;
  right: -10%;
  z-index: 0;
  animation: blobMorph 20s ease-in-out infinite;
  filter: blur(40px);
}

@keyframes blobMorph {
  0%, 100% { border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%; transform: rotate(0deg) scale(1); }
  25% { border-radius: 30% 60% 70% 40% / 50% 60% 30% 60%; }
  50% { border-radius: 50% 60% 30% 60% / 30% 40% 70% 60%; transform: rotate(10deg) scale(1.05); }
  75% { border-radius: 40% 60% 50% 70% / 60% 30% 60% 40%; }
}

/* ===== SECTION GRADIENT BORDERS ===== */
.features .features__grid > div,
.how .how__steps > div,
.pricing .price-card,
.faq .faq__item {
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.4s ease,
              border-color 0.3s ease;
}

.features .features__grid > div:hover,
.how .how__steps > div:hover,
.faq .faq__item:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0, 102, 255, 0.1), 0 4px 20px rgba(0, 0, 0, 0.06);
  border-color: rgba(0, 102, 255, 0.2);
}

/* ===== ANIMATED COUNTER ===== */
.stats__number {
  background: linear-gradient(135deg, var(--color-accent), #00c6ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== SMOOTH SCROLL INDICATOR ===== */
.hero__scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  opacity: 0.5;
  animation: scrollBounce 2s ease-in-out infinite;
}

.hero__scroll span {
  font-size: 0.7rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-text-tertiary);
}

.hero__scroll-line {
  width: 1px;
  height: 32px;
  background: linear-gradient(to bottom, var(--color-accent), transparent);
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ===== PRICING CANVAS ===== */
.pricing__canvas {
  z-index: 0;
  opacity: 0.4;
}

.pricing {
  position: relative;
}

.pricing .container {
  position: relative;
  z-index: 2;
}

/* ===== CTA CANVAS ===== */
.cta__canvas {
  z-index: 0;
  opacity: 0.5;
}

.cta {
  position: relative;
  overflow: hidden;
}

.cta .container {
  position: relative;
  z-index: 2;
}

/* ===== FEATURES CANVAS ===== */
.features__canvas {
  z-index: 0;
  opacity: 0.3;
}

.features {
  position: relative;
}

.features .container {
  position: relative;
  z-index: 2;
}

/* ===== GRADIENT TEXT SHIMMER ===== */
@keyframes gradientShimmer {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.shimmer-text {
  background: linear-gradient(90deg, var(--color-accent), #00c6ff, #6366f1, var(--color-accent));
  background-size: 300% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShimmer 4s ease infinite;
}

/* ===== TILT CARD EFFECT ===== */
.tilt-card {
  transform-style: preserve-3d;
  perspective: 1000px;
}

/* ===== REVEAL ANIMATIONS ===== */
.will-animate {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.will-animate.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.will-animate:nth-child(2) { transition-delay: 0.1s; }
.will-animate:nth-child(3) { transition-delay: 0.2s; }
.will-animate:nth-child(4) { transition-delay: 0.3s; }
.will-animate:nth-child(5) { transition-delay: 0.4s; }
.will-animate:nth-child(6) { transition-delay: 0.5s; }

/* ===== ANIMATIONS ===== */
.anim-fade-up {
  opacity: 0;
  transform: translateY(24px);
  animation: fadeUp 0.6s ease forwards;
}

@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Intersection observer — elements hidden until visible */
.will-animate {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.will-animate.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== RESPONSIVE ===== */

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

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

  .pricing__grid .price-card:last-child {
    grid-column: 1 / -1;
    max-width: 400px;
    margin: 0 auto;
  }

  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }

  .how__steps {
    grid-template-columns: repeat(2, 1fr);
  }
  .how__steps .step:last-child {
    grid-column: 1 / -1;
    max-width: 400px;
    margin: 0 auto;
  }
}

/* Mobile */
@media (max-width: 768px) {
  :root {
    --font-size-5xl: 2.25rem;
    --font-size-4xl: 1.75rem;
    --font-size-3xl: 1.5rem;
  }

  .nav__links,
  .nav__actions {
    display: none;
  }

  .nav__burger {
    display: flex;
  }

  .hero {
    padding: 120px 0 0;
  }

  .hero__cta {
    flex-direction: column;
  }

  .hero__cta .btn {
    width: 100%;
  }

  .features__grid {
    grid-template-columns: 1fr;
  }

  .how__steps {
    grid-template-columns: 1fr;
  }
  .how__steps .step:last-child {
    max-width: none;
  }

  .pricing__grid {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin: 0 auto;
  }
  .pricing__grid .price-card:last-child {
    max-width: none;
  }

  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  .section-header {
    margin-bottom: 40px;
  }

  .features,
  .how,
  .pricing,
  .faq {
    padding: 80px 0;
  }

  .cta__inner {
    padding: 48px 24px;
  }

  .footer__inner {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .footer__left {
    flex-direction: column;
    gap: 8px;
  }

  .footer__links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
  }

  .logos__row {
    gap: 24px;
  }
}

/* Small mobile */
@media (max-width: 480px) {
  :root {
    --container-padding: 16px;
  }

  .hero__proof {
    flex-direction: column;
    gap: 8px;
  }

  .hero__card-body {
    padding: 20px 16px;
  }
}