/* =====================================================
   IMTO - Institut Mezhkulturnogo i Tvorcheskogo Obucheniya
   Main Stylesheet v1.0
   ===================================================== */

/* === CSS VARIABLES === */
:root {
  --color-primary: #2D4FE8;
  --color-primary-dark: #1A237E;
  --color-primary-light: #5B7BF5;
  --color-secondary: #FF6B47;
  --color-secondary-dark: #E55A38;
  --color-bg: #FFFFFF;
  --color-bg-soft: #F7F9FF;
  --color-bg-card: #FFFFFF;
  --color-text-heading: #1A237E;
  --color-text-body: #5A6B8C;
  --color-text-dark: #1E2A4A;
  --color-border: #E8EDF8;
  --color-success: #22C55E;
  --color-star: #FBBF24;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-pill: 100px;

  --shadow-sm: 0 2px 8px rgba(45, 79, 232, 0.08);
  --shadow-md: 0 8px 32px rgba(45, 79, 232, 0.12);
  --shadow-lg: 0 20px 60px rgba(45, 79, 232, 0.15);
  --shadow-card: 0 4px 24px rgba(26, 35, 126, 0.08);
  --shadow-hover: 0 16px 48px rgba(45, 79, 232, 0.2);

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.15s ease;

  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Manrope', 'Inter', sans-serif;

  --container-max: 1240px;
  --container-pad: clamp(16px, 5vw, 40px);

  --header-h: 72px;
}

/* === RESET & BASE === */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-primary);
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-text-body);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

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

ul, ol {
  list-style: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-text-heading);
  line-height: 1.2;
  font-weight: 700;
}

/* === SKIP LINK (a11y) === */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 9999;
  padding: 12px 24px;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: top 0.2s;
}
.skip-link:focus {
  top: 16px;
}

/* === CONTAINER === */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* === TYPOGRAPHY === */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 12px;
}
.section-label::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
}

.section-title {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 800;
  color: var(--color-text-heading);
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: clamp(16px, 2vw, 18px);
  color: var(--color-text-body);
  max-width: 600px;
  line-height: 1.7;
}

.section-header {
  margin-bottom: 56px;
}

.section-header--center {
  text-align: center;
}
.section-header--center .section-label {
  margin-inline: auto;
}
.section-header--center .section-subtitle {
  margin-inline: auto;
}

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
  line-height: 1;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(45, 79, 232, 0.35);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  box-shadow: 0 8px 32px rgba(45, 79, 232, 0.45);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--color-secondary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(255, 107, 71, 0.35);
}
.btn-secondary:hover {
  background: var(--color-secondary-dark);
  box-shadow: 0 8px 32px rgba(255, 107, 71, 0.45);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
}

.btn-ghost {
  background: rgba(255,255,255,0.12);
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.3);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.5);
}

.btn-lg {
  padding: 18px 40px;
  font-size: 17px;
}

.btn-sm {
  padding: 10px 20px;
  font-size: 14px;
}

.btn svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* === BADGE === */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.badge-blue { background: rgba(45, 79, 232, 0.1); color: var(--color-primary); }
.badge-coral { background: rgba(255, 107, 71, 0.1); color: var(--color-secondary); }
.badge-green { background: rgba(34, 197, 94, 0.1); color: #15803d; }
.badge-purple { background: rgba(139, 92, 246, 0.1); color: #7c3aed; }

/* === HEADER === */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  display: flex;
  align-items: center;
  transition: background 0.4s ease, box-shadow 0.4s ease;
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 2px 24px rgba(26, 35, 126, 0.08);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.logo-icon svg {
  width: 26px;
  height: 26px;
  color: #fff;
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-name {
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 800;
  color: var(--color-text-heading);
  line-height: 1.2;
  max-width: 180px;
}

.logo-tagline {
  font-size: 10px;
  color: var(--color-text-body);
  font-weight: 500;
  letter-spacing: 0.04em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.nav-link {
  padding: 8px 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-body);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
  background: rgba(45, 79, 232, 0.06);
}

.header-cta {
  margin-left: 12px;
  flex-shrink: 0;
}

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  margin-left: auto;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.burger-line {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-heading);
  border-radius: 2px;
  transition: var(--transition);
}

.burger.open .burger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.burger.open .burger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.burger.open .burger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(20px);
  padding: 16px var(--container-pad) 24px;
  box-shadow: 0 16px 48px rgba(26, 35, 126, 0.12);
  z-index: 999;
  flex-direction: column;
  gap: 4px;
  transform: translateY(-20px);
  opacity: 0;
  transition: var(--transition);
}
.mobile-nav.open {
  display: flex;
  transform: translateY(0);
  opacity: 1;
}

.mobile-nav .nav-link {
  font-size: 16px;
  padding: 12px 16px;
}

.mobile-nav .btn {
  margin-top: 12px;
  justify-content: center;
}

/* === HERO === */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #F0F4FF 0%, #E8EEFF 40%, #F7F9FF 100%);
  padding-top: var(--header-h);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(45, 79, 232, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 107, 71, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  padding-block: 80px;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(45, 79, 232, 0.1);
  border: 1px solid rgba(45, 79, 232, 0.2);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 24px;
}

.hero-eyebrow span {
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero-title {
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 800;
  color: var(--color-text-heading);
  line-height: 1.1;
  margin-bottom: 12px;
}

.hero-title .accent {
  color: var(--color-primary);
}

.hero-tagline {
  font-size: clamp(20px, 2.5vw, 28px);
  font-weight: 600;
  color: var(--color-primary-light);
  font-style: italic;
  margin-bottom: 20px;
}

.hero-description {
  font-size: 18px;
  color: var(--color-text-body);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 480px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
}

.hero-stat {
  display: flex;
  flex-direction: column;
}

.hero-stat-num {
  font-family: var(--font-heading);
  font-size: 32px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.hero-stat-label {
  font-size: 13px;
  color: var(--color-text-body);
  margin-top: 4px;
}

.hero-visual {
  position: relative;
  z-index: 1;
}

.hero-graphic {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-circle-main {
  width: 380px;
  height: 380px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.hero-circle-inner {
  font-size: 120px;
  line-height: 1;
  user-select: none;
}

.hero-float-card {
  position: absolute;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-heading);
  animation: float 6s ease-in-out infinite;
}

.hero-float-card:nth-child(2) { top: 8%; left: -8%; animation-delay: -2s; }
.hero-float-card:nth-child(3) { bottom: 20%; right: -12%; animation-delay: -4s; }
.hero-float-card:nth-child(4) { bottom: 8%; left: 0%; animation-delay: -1s; }

.hero-float-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
}

/* === SECTIONS === */
.section {
  padding-block: clamp(60px, 8vw, 100px);
}

.section-alt {
  background: var(--color-bg-soft);
}

/* === CATEGORIES === */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 56px;
}

.category-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  border: 1.5px solid var(--color-border);
  transition: var(--transition);
  cursor: pointer;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.category-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.category-card.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.category-card.active .category-title,
.category-card.active .category-count {
  color: #fff;
}

.category-card.active .category-icon {
  background: rgba(255,255,255,0.2);
}

.category-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: rgba(45, 79, 232, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  transition: var(--transition);
}

.category-card:hover .category-icon {
  background: rgba(45, 79, 232, 0.15);
  transform: scale(1.05);
}

.category-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-heading);
  line-height: 1.3;
}

.category-count {
  font-size: 13px;
  color: var(--color-text-body);
}

/* === COURSES GRID === */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.course-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1.5px solid var(--color-border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.course-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: transparent;
}

.course-card-img {
  height: 180px;
  background: linear-gradient(135deg, #E8EEFF 0%, #D4DBFF 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 60px;
  position: relative;
  overflow: hidden;
}

.course-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.course-card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.course-card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text-heading);
  margin-bottom: 8px;
  line-height: 1.3;
}

.course-card-desc {
  font-size: 14px;
  color: var(--color-text-body);
  line-height: 1.6;
  margin-bottom: 16px;
  flex: 1;
}

.course-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  gap: 12px;
  flex-wrap: wrap;
}

.course-card-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.course-card-price {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-primary);
}

.course-card-duration {
  font-size: 12px;
  color: var(--color-text-body);
  display: flex;
  align-items: center;
  gap: 4px;
}

/* === ADVANTAGES === */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.advantage-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1.5px solid var(--color-border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.advantage-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
  border-color: rgba(45, 79, 232, 0.2);
}

.advantage-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(45, 79, 232, 0.1) 0%, rgba(91, 123, 245, 0.1) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
}

.advantage-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text-heading);
}

.advantage-desc {
  font-size: 14px;
  color: var(--color-text-body);
  line-height: 1.7;
}

/* === SPEAKERS === */
.speakers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.speaker-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1.5px solid var(--color-border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.speaker-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: transparent;
}

.speaker-photo {
  height: 280px;
  background: linear-gradient(135deg, #E8EEFF 0%, #C5D0F8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 80px;
  position: relative;
  overflow: hidden;
}

.speaker-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.speaker-photo-placeholder {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  color: #fff;
  font-weight: 700;
  font-family: var(--font-heading);
}

.speaker-body {
  padding: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.speaker-name {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-text-heading);
  margin-bottom: 4px;
}

.speaker-role {
  font-size: 14px;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: 16px;
}

.speaker-bio {
  font-size: 14px;
  color: var(--color-text-body);
  line-height: 1.65;
  margin-bottom: 20px;
  flex: 1;
}

.speaker-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 14px;
  margin-bottom: 20px;
}

.speaker-tag {
  padding: 4px 12px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  font-size: 12px;
  color: var(--color-text-body);
  font-weight: 500;
  white-space: nowrap;
}

.speaker-certs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

.speaker-cert {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  background: rgba(45, 79, 232, 0.08);
  border-radius: var(--radius-pill);
  font-size: 11px;
  color: var(--color-primary);
  font-weight: 600;
}

/* === REVIEWS === */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1.5px solid var(--color-border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
}

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

.review-card::before {
  content: '"';
  position: absolute;
  top: 16px;
  right: 24px;
  font-size: 80px;
  font-family: Georgia, serif;
  color: rgba(45, 79, 232, 0.08);
  line-height: 1;
  pointer-events: none;
}

.review-stars {
  display: flex;
  gap: 3px;
}

.review-star {
  color: var(--color-star);
  font-size: 16px;
}

.review-text {
  font-size: 15px;
  color: var(--color-text-body);
  line-height: 1.7;
  flex: 1;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.review-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  flex-shrink: 0;
}

.review-author-info {
  display: flex;
  flex-direction: column;
}

.review-author-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text-heading);
}

.review-author-meta {
  font-size: 13px;
  color: var(--color-text-body);
}

/* === FAQ === */
.faq-list {
  max-width: 800px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.faq-item {
  border-bottom: 1.5px solid var(--color-border);
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 28px;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-heading);
  background: var(--color-bg-card);
  transition: var(--transition);
  cursor: pointer;
}

.faq-question:hover {
  background: var(--color-bg-soft);
  color: var(--color-primary);
}

.faq-item.open .faq-question {
  color: var(--color-primary);
  background: rgba(45, 79, 232, 0.04);
}

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-bg-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--color-primary);
  flex-shrink: 0;
  transition: var(--transition);
  font-weight: 300;
}

.faq-item.open .faq-icon {
  background: var(--color-primary);
  color: #fff;
  transform: rotate(45deg);
}

.faq-answer {
  display: none;
  padding: 0 28px 24px;
  font-size: 15px;
  color: var(--color-text-body);
  line-height: 1.75;
  background: rgba(45, 79, 232, 0.02);
}

.faq-item.open .faq-answer {
  display: block;
}

/* === BLOG === */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.blog-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1.5px solid var(--color-border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  text-decoration: none;
}

.blog-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: transparent;
}

.blog-card-img {
  height: 200px;
  background: linear-gradient(135deg, #E8EEFF 0%, #D4DBFF 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 60px;
}

.blog-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.blog-card-category {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.blog-card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text-heading);
  line-height: 1.35;
}

.blog-card-excerpt {
  font-size: 14px;
  color: var(--color-text-body);
  line-height: 1.65;
  flex: 1;
}

.blog-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  font-size: 13px;
  color: var(--color-text-body);
}

.blog-card-read-more {
  color: var(--color-primary);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* === CONTACT === */
.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 56px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact-info-title {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 800;
  color: var(--color-text-heading);
}

.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-detail-icon {
  width: 48px;
  height: 48px;
  background: rgba(45, 79, 232, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.contact-detail-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.contact-detail-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-body);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.contact-detail-value {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-heading);
}

.contact-detail-value a {
  color: inherit;
  transition: color var(--transition-fast);
}

.contact-detail-value a:hover {
  color: var(--color-primary);
}

.contact-social {
  display: flex;
  gap: 12px;
}

.social-btn {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(45, 79, 232, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 20px;
  transition: var(--transition);
}

.social-btn:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
}

.map-container {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1.5px solid var(--color-border);
  box-shadow: var(--shadow-card);
  height: 400px;
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* === CTA SECTION === */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, #1A3AD4 100%);
  padding-block: clamp(60px, 8vw, 100px);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -100px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -150px;
  left: -50px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 107, 71, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 1;
  max-width: 680px;
  margin-inline: auto;
  text-align: center;
}

.cta-title {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}

.cta-subtitle {
  font-size: 18px;
  color: rgba(255,255,255,0.8);
  margin-bottom: 48px;
  line-height: 1.6;
}

.cta-form {
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-xl);
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 13px;
  font-weight: 600;
  color: rgba(255,255,255,0.8);
}

.form-input {
  width: 100%;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  border: 1.5px solid rgba(255,255,255,0.25);
  background: rgba(255,255,255,0.1);
  color: #fff;
  font-size: 15px;
  transition: var(--transition);
  outline: none;
}

.form-input::placeholder {
  color: rgba(255,255,255,0.5);
}

.form-input:focus {
  border-color: rgba(255,255,255,0.6);
  background: rgba(255,255,255,0.15);
}

.form-input option {
  background: var(--color-primary-dark);
  color: #fff;
}

.form-consent {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  text-align: left;
}

.form-consent a {
  color: rgba(255,255,255,0.8);
  text-decoration: underline;
}

.form-consent label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
}

.form-consent input[type="checkbox"] {
  margin-top: 2px;
  flex-shrink: 0;
  accent-color: var(--color-secondary);
}

/* === ABOUT MINI === */
.about-mini-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-mini-image {
  position: relative;
}

.about-mini-img-wrap {
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: linear-gradient(135deg, #E8EEFF 0%, #C5D0F8 100%);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 120px;
  box-shadow: var(--shadow-lg);
}

.about-mini-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.about-badge {
  position: absolute;
  bottom: -20px;
  right: -20px;
  background: var(--color-secondary);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  font-weight: 700;
  font-size: 14px;
  box-shadow: var(--shadow-md);
  text-align: center;
}

.about-badge-num {
  font-size: 36px;
  font-family: var(--font-heading);
  display: block;
  line-height: 1;
}

.about-mini-directions {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 32px;
  margin-bottom: 36px;
}

.about-direction {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--color-bg-soft);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-primary);
}

.about-direction-icon {
  font-size: 24px;
}

.about-direction-text {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-heading);
}

/* === STATS ROW === */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
  background: var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: 56px;
}

.stat-item {
  background: var(--color-bg-card);
  padding: 32px 24px;
  text-align: center;
}

.stat-num {
  font-family: var(--font-heading);
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.stat-label {
  font-size: 14px;
  color: var(--color-text-body);
  margin-top: 8px;
}

/* === FOOTER === */
.footer {
  background: var(--color-primary-dark);
  color: rgba(255,255,255,0.7);
  padding-top: 64px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-logo-icon {
  width: 48px;
  height: 48px;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer-logo-name {
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  max-width: 180px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  max-width: 280px;
}

.footer-address {
  font-size: 13px;
  line-height: 1.6;
  color: rgba(255,255,255,0.5);
}

.footer-social {
  display: flex;
  gap: 10px;
}

.footer-social-link {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.7);
  font-size: 18px;
  transition: var(--transition);
}

.footer-social-link:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
}

.footer-col-title {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: 0.04em;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: #fff;
}

.footer-bottom {
  padding-block: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

.footer-bottom-links {
  display: flex;
  gap: 24px;
}

.footer-bottom-link {
  color: rgba(255,255,255,0.4);
  transition: color var(--transition-fast);
}

.footer-bottom-link:hover {
  color: rgba(255,255,255,0.8);
}

/* === FLOATING ELEMENTS === */
.floating-cta {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 900;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-end;
}

.floating-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  font-size: 22px;
  text-decoration: none;
}

.floating-btn:hover {
  transform: scale(1.1) translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.floating-btn-vk {
  background: #0077FF;
  color: #fff;
}

.floating-btn-call {
  background: var(--color-secondary);
  color: #fff;
}

.floating-main-cta {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
  text-decoration: none;
}

.floating-main-cta:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
}

/* === POPUP === */
.popup-overlay {
  position: fixed;
  inset: 0;
  background: rgba(26, 35, 126, 0.5);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.popup-overlay.active {
  opacity: 1;
  visibility: visible;
}

.popup-box {
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  padding: 48px 40px;
  max-width: 480px;
  width: 100%;
  position: relative;
  box-shadow: var(--shadow-lg);
  transform: scale(0.95) translateY(20px);
  transition: var(--transition);
}

.popup-overlay.active .popup-box {
  transform: scale(1) translateY(0);
}

.popup-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-bg-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--color-text-body);
  transition: var(--transition);
}

.popup-close:hover {
  background: var(--color-border);
  color: var(--color-text-heading);
}

.popup-icon {
  font-size: 48px;
  margin-bottom: 20px;
}

.popup-title {
  font-size: 26px;
  font-weight: 800;
  color: var(--color-text-heading);
  margin-bottom: 8px;
}

.popup-subtitle {
  font-size: 15px;
  color: var(--color-text-body);
  margin-bottom: 28px;
  line-height: 1.6;
}

.popup-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.popup-form .form-input {
  color: var(--color-text-heading);
  background: var(--color-bg-soft);
  border-color: var(--color-border);
}

.popup-form .form-input::placeholder {
  color: var(--color-text-body);
}

.popup-form .form-input:focus {
  border-color: var(--color-primary);
  background: #fff;
}

/* === PAGE HERO === */
.page-hero {
  padding-top: calc(var(--header-h) + 48px);
  padding-bottom: 64px;
  background: linear-gradient(135deg, #F0F4FF 0%, #E8EEFF 100%);
}

.page-hero .container {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-body);
  flex-wrap: wrap;
}

.breadcrumb-sep {
  color: var(--color-border);
}

.breadcrumb a {
  color: var(--color-primary);
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--color-primary-dark);
}

.page-hero-title {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 800;
  color: var(--color-text-heading);
  max-width: 800px;
}

.page-hero-desc {
  font-size: 18px;
  color: var(--color-text-body);
  max-width: 600px;
  line-height: 1.7;
}

/* === FILTER BAR === */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  border: 1.5px solid var(--color-border);
  background: var(--color-bg-card);
  color: var(--color-text-body);
  transition: var(--transition);
  cursor: pointer;
}

.filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.filter-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* === COURSE DETAIL === */
.course-hero {
  padding-top: calc(var(--header-h) + 40px);
  padding-bottom: 60px;
  background: linear-gradient(135deg, #1A237E 0%, #2D4FE8 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.course-hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -100px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 70%);
}

.course-hero .container {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 60px;
  align-items: start;
  position: relative;
  z-index: 1;
}

.course-hero-label {
  color: rgba(255,255,255,0.7);
  font-size: 13px;
  margin-bottom: 8px;
}

.course-hero-title {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}

.course-hero-tagline {
  font-size: 18px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 24px;
  font-style: italic;
}

.course-hero-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
}

.course-highlight {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(255,255,255,0.12);
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 500;
}

.course-purchase-card {
  background: #fff;
  border-radius: var(--radius-xl);
  padding: 32px;
  color: var(--color-text-heading);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: sticky;
  top: calc(var(--header-h) + 20px);
}

.course-purchase-price {
  font-size: 40px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.course-purchase-old-price {
  text-decoration: line-through;
  font-size: 18px;
  color: var(--color-text-body);
}

.course-purchase-badge {
  background: rgba(255, 107, 71, 0.1);
  color: var(--color-secondary);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
}

.course-purchase-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.course-purchase-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--color-text-body);
}

.course-purchase-feature::before {
  content: '✓';
  width: 20px;
  height: 20px;
  background: rgba(34, 197, 94, 0.1);
  color: var(--color-success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
}

.course-content-section {
  padding-block: 60px;
}

.course-content-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 60px;
  align-items: start;
}

.course-content-main {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.content-block-title {
  font-size: 26px;
  font-weight: 800;
  color: var(--color-text-heading);
  margin-bottom: 24px;
}

.audience-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.audience-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: var(--color-bg-soft);
  border-radius: var(--radius-md);
}

.audience-icon {
  font-size: 24px;
  flex-shrink: 0;
}

.benefits-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.benefit-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px 24px;
  background: var(--color-bg-soft);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-primary);
}

.benefit-icon {
  font-size: 22px;
  flex-shrink: 0;
}

.benefit-text {
  font-size: 15px;
  color: var(--color-text-body);
  line-height: 1.6;
}

.benefit-text strong {
  color: var(--color-text-heading);
  display: block;
  font-weight: 700;
  margin-bottom: 4px;
}

.program-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.program-module {
  border-bottom: 1px solid var(--color-border);
}

.program-module:last-child {
  border-bottom: none;
}

.program-module-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--color-bg-card);
  cursor: pointer;
  transition: var(--transition);
}

.program-module-header:hover {
  background: var(--color-bg-soft);
}

.program-module-num {
  width: 32px;
  height: 32px;
  background: rgba(45, 79, 232, 0.1);
  color: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
}

.program-module-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-heading);
  flex: 1;
}

.program-module-meta {
  font-size: 13px;
  color: var(--color-text-body);
}

.program-lessons {
  display: none;
  padding: 0 24px 20px 72px;
  flex-direction: column;
  gap: 8px;
}

.program-module.open .program-lessons {
  display: flex;
}

.program-lesson {
  font-size: 14px;
  color: var(--color-text-body);
  display: flex;
  align-items: center;
  gap: 8px;
}

.program-lesson::before {
  content: '•';
  color: var(--color-primary);
}

/* === TARIFF CARDS === */
.tariff-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.tariff-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  padding: 36px 28px;
  border: 1.5px solid var(--color-border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: relative;
}

.tariff-card.featured {
  border-color: var(--color-primary);
  background: linear-gradient(135deg, #F0F4FF 0%, #fff 100%);
  box-shadow: var(--shadow-md);
}

.tariff-popular {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-secondary);
  color: #fff;
  padding: 4px 16px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}

.tariff-name {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-text-heading);
}

.tariff-price {
  font-size: 40px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.tariff-price-period {
  font-size: 14px;
  color: var(--color-text-body);
  font-weight: 400;
}

.tariff-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.tariff-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--color-text-body);
}

.tariff-feature-icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
}

.tariff-feature-icon.yes { background: rgba(34, 197, 94, 0.1); color: #15803d; }
.tariff-feature-icon.no { background: rgba(90, 107, 140, 0.1); color: var(--color-text-body); }

/* === AOS ANIMATIONS === */
[data-aos] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-animate {
  opacity: 1;
  transform: translateY(0);
}

[data-aos="fade-left"] {
  opacity: 0;
  transform: translateX(-30px);
}
[data-aos="fade-left"].aos-animate {
  opacity: 1;
  transform: translateX(0);
}

[data-aos="fade-right"] {
  opacity: 0;
  transform: translateX(30px);
}
[data-aos="fade-right"].aos-animate {
  opacity: 1;
  transform: translateX(0);
}

[data-aos="zoom-in"] {
  opacity: 0;
  transform: scale(0.9);
}
[data-aos="zoom-in"].aos-animate {
  opacity: 1;
  transform: scale(1);
}

/* === UTILITY CLASSES === */
.text-center { text-align: center; }
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-40 { margin-top: 40px; }
.mb-0 { margin-bottom: 0; }
.hidden { display: none; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-16 { gap: 16px; }
.w-full { width: 100%; }

/* === DIVIDER === */
.divider {
  height: 1px;
  background: var(--color-border);
  margin-block: 0;
}

/* === NOTIFICATION TOAST === */
.toast {
  position: fixed;
  bottom: 100px;
  right: 24px;
  background: var(--color-primary-dark);
  color: #fff;
  padding: 16px 24px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  z-index: 3000;
  transform: translateY(20px);
  opacity: 0;
  transition: var(--transition);
  max-width: 300px;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

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

/* Large tablets */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-visual {
    display: none;
  }

  .hero-title {
    font-size: clamp(32px, 5vw, 52px);
  }

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

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

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

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

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .contact-wrap {
    grid-template-columns: 1fr;
  }

  .about-mini-wrap {
    grid-template-columns: 1fr;
    gap: 48px;
  }

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

  .course-hero .container,
  .course-content-grid {
    grid-template-columns: 1fr;
  }

  .course-purchase-card {
    position: static;
  }

  .tariff-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin-inline: auto;
  }

  .audience-list {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}

/* Tablets */
@media (max-width: 768px) {
  :root {
    --header-h: 64px;
  }

  .nav { display: none; }
  .header-cta { display: none; }
  .burger { display: flex; }

  .speakers-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin-inline: auto;
  }

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

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

  .hero-stats {
    gap: 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

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

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

  .cta-form {
    padding: 28px 20px;
  }
}

/* Mobile */
@media (max-width: 480px) {
  .hero-cta {
    flex-direction: column;
  }

  .btn-lg {
    padding: 16px 28px;
    font-size: 15px;
    justify-content: center;
  }

  .categories-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .category-card {
    padding: 20px 16px;
  }

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

  .course-card-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-stats {
    grid-template-columns: repeat(3, 1fr);
    display: grid;
    gap: 16px;
  }

  .floating-cta {
    bottom: 16px;
    right: 16px;
  }

  .toast {
    left: 16px;
    right: 16px;
    bottom: 80px;
  }

  .popup-box {
    padding: 32px 24px;
  }

  .about-badge {
    position: static;
    display: inline-block;
    margin-top: 20px;
  }
}

/* Very small screens */
@media (max-width: 360px) {
  .logo-text {
    display: none;
  }

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

/* High-DPI / Retina */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  /* Use @2x images if available */
}

/* Print */
@media print {
  .header,
  .floating-cta,
  .popup-overlay,
  .footer {
    display: none;
  }

  body {
    font-size: 12pt;
    color: #000;
  }
}

/* === SCROLL-TO-TOP === */
.scroll-top {
  position: fixed;
  bottom: 24px;
  left: 24px;
  width: 48px;
  height: 48px;
  background: rgba(45, 79, 232, 0.9);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: var(--shadow-sm);
  z-index: 800;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  cursor: pointer;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
}

/* === LOGO IMAGE === */
.logo-img {
  height: 48px;
  width: auto;
  display: block;
  object-fit: contain;
}

.footer-logo-img {
  height: 52px;
  width: auto;
  display: block;
  object-fit: contain;
  filter: brightness(0) invert(1);
  opacity: 0.9;
}

/* === IMPROVED BADGE / TAG SPACING === */
.course-card-meta {
  gap: 10px;
  row-gap: 8px;
}

/* === SPEAKER CONTACT LINK === */
.speaker-contact {
  display: flex;
  gap: 10px;
  margin-top: 0;
  flex-wrap: wrap;
}

.speaker-contact .btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.speaker-contact .btn img {
  display: inline-block;
  vertical-align: middle;
}

/* === CONSENT POPUP === */
.consent-overlay {
  position: fixed;
  inset: 0;
  background: rgba(26, 35, 126, 0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 3000;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.consent-overlay.active {
  opacity: 1;
  visibility: visible;
}

.consent-box {
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  padding: 40px 44px;
  max-width: 700px;
  width: 100%;
  box-shadow: 0 24px 80px rgba(26, 35, 126, 0.25);
  transform: translateY(40px);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1.5px solid var(--color-border);
  position: relative;
}

.consent-overlay.active .consent-box {
  transform: translateY(0);
}

.consent-logo {
  margin-bottom: 18px;
}

.consent-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-text-heading);
  margin-bottom: 12px;
  line-height: 1.3;
}

.consent-text {
  font-size: 15px;
  color: var(--color-text-body);
  line-height: 1.7;
  margin-bottom: 24px;
}

.consent-link {
  color: var(--color-primary);
  text-decoration: underline;
  font-weight: 500;
}

.consent-link:hover {
  color: var(--color-primary-dark);
}

.consent-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

@media (max-width: 600px) {
  .consent-box {
    padding: 28px 24px;
  }
  .consent-title {
    font-size: 18px;
  }
  .consent-actions {
    flex-direction: column;
  }
  .consent-actions .btn {
    justify-content: center;
  }
}