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

:root {
  --blue-900: #0c1a3a;
  --blue-800: #122654;
  --blue-700: #1a3470;
  --blue-600: #2563eb;
  --blue-500: #3b82f6;
  --blue-100: #dbeafe;
  --green-500: #22c55e;
  --green-600: #16a34a;
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-700: #334155;
  --gray-900: #0f172a;
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.12);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.25s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  color: var(--gray-900);
  background: var(--gray-50);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--gray-900);
  font-weight: 700;
  font-size: 1.15rem;
}

.logo__icon {
  font-size: 1.5rem;
}

.nav {
  display: flex;
  gap: 28px;
}

.nav a {
  text-decoration: none;
  color: var(--gray-700);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--transition);
}

.nav a:hover {
  color: var(--blue-600);
}

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gray-900);
  border-radius: 2px;
  transition: var(--transition);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}

.btn--primary {
  background: linear-gradient(135deg, var(--blue-600), var(--blue-500));
  color: var(--white);
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.15);
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.25);
}

.btn--small {
  padding: 10px 20px;
  font-size: 0.875rem;
}

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

.header__cta {
  flex-shrink: 0;
}

/* Hero */
.hero {
  position: relative;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--blue-900) 0%, var(--blue-700) 50%, #1e40af 100%);
  z-index: 0;
}

.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(34, 197, 94, 0.15) 0%, transparent 40%);
}

.hero__inner {
  position: relative;
  z-index: 1;
}

.hero__content {
  max-width: 680px;
  margin-bottom: 56px;
}

.badge {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(34, 197, 94, 0.2);
  color: #86efac;
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero__subtitle {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 32px;
  max-width: 560px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* Conditions */
.conditions__title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 24px;
}

.conditions__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.condition-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 28px 24px;
  backdrop-filter: blur(8px);
  transition: transform var(--transition), background var(--transition);
}

.condition-card:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.12);
}

.condition-card--highlight {
  background: rgba(34, 197, 94, 0.15);
  border-color: rgba(34, 197, 94, 0.3);
}

.condition-card__icon {
  font-size: 2rem;
  margin-bottom: 14px;
}

.condition-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}

.condition-card p {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.5;
}

/* Section head */
.section-head {
  text-align: center;
  margin-bottom: 48px;
}

.section-head h2 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-head p {
  color: var(--gray-500);
  font-size: 1.05rem;
}

.section-head--light h2,
.section-head--light p {
  color: var(--white);
}

.section-head--light p {
  opacity: 0.8;
}

/* Reviews */
.reviews {
  padding: 96px 0;
  background: var(--white);
}

.reviews__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.review-card {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 28px;
  transition: box-shadow var(--transition), transform var(--transition);
}

.review-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.review-card__header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.review-card__avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue-600), var(--blue-500));
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.review-card__header strong {
  display: block;
  font-size: 1rem;
}

.review-card__header span {
  font-size: 0.85rem;
  color: var(--gray-500);
}

.review-card p {
  color: var(--gray-700);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 16px;
}

.review-card__stars {
  color: #fbbf24;
  font-size: 1rem;
  letter-spacing: 2px;
}

/* Form */
.form-section {
  padding: 96px 0;
  background: var(--gray-100);
}

.form-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
  background: var(--white);
  border-radius: 24px;
  padding: 48px;
  box-shadow: var(--shadow-lg);
}

.form-wrapper__info h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.form-wrapper__info > p {
  color: var(--gray-500);
  margin-bottom: 28px;
  font-size: 1.05rem;
}

.form-benefits {
  list-style: none;
}

.form-benefits li {
  padding: 10px 0;
  color: var(--gray-700);
  font-weight: 500;
  font-size: 0.95rem;
}

.application-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

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

.form-group label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--gray-700);
}

.form-group input {
  padding: 14px 16px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
  background: var(--gray-50);
}

.form-group input:focus {
  outline: none;
  border-color: var(--blue-500);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
  background: var(--white);
}

.form-group input.invalid {
  border-color: #ef4444;
}

.form-hint {
  font-size: 0.8rem;
  color: var(--gray-400);
}

.form-error {
  font-size: 0.8rem;
  color: #ef4444;
  min-height: 0;
}

.form-error:not(:empty) {
  min-height: 1.2em;
}

.form-note {
  text-align: center;
  font-size: 0.8rem;
  color: var(--gray-400);
}

/* Contacts */
.contacts {
  padding: 96px 0;
  background: linear-gradient(135deg, var(--blue-900), var(--blue-700));
}

.contacts__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  max-width: 720px;
  margin: 0 auto;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 28px 32px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--white);
  transition: all var(--transition);
}

.contact-card:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}

.contact-card__icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-card__icon svg {
  width: 28px;
  height: 28px;
}

.contact-card--tg .contact-card__icon {
  background: #229ED9;
}

.contact-card--wa .contact-card__icon {
  background: #25D366;
}

.contact-card strong {
  display: block;
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.contact-card span {
  font-size: 0.95rem;
  opacity: 0.8;
}

/* Footer */
.footer {
  padding: 28px 0;
  background: var(--blue-900);
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
}

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

.footer a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
}

.footer a:hover {
  color: var(--white);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--gray-900);
  color: var(--white);
  padding: 16px 28px;
  border-radius: 12px;
  font-weight: 500;
  font-size: 0.95rem;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transition: all 0.4s ease;
  z-index: 200;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast.success {
  background: var(--green-600);
}

.toast.error {
  background: #ef4444;
}

/* Mobile nav */
@media (max-width: 768px) {
  .nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--white);
    padding: 20px;
    gap: 16px;
    border-bottom: 1px solid var(--gray-200);
    box-shadow: var(--shadow);
  }

  .nav.open {
    display: flex;
  }

  .header__cta {
    display: none;
  }

  .burger {
    display: flex;
  }

  .burger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .burger.active span:nth-child(2) {
    opacity: 0;
  }

  .burger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero {
    padding: 100px 0 60px;
  }

  .form-wrapper {
    grid-template-columns: 1fr;
    padding: 28px 20px;
  }

  .reviews,
  .form-section,
  .contacts {
    padding: 64px 0;
  }

  .footer__inner {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}