/* ===== CSS Variables ===== */
:root {
  --color-primary: #e63946;
  --color-primary-dark: #c62833;
  --color-dark: #1a1a2e;
  --color-dark-alt: #16213e;
  --color-light: #f8f9fa;
  --color-gray: #6c757d;
  --color-gray-light: #e9ecef;
  --color-white: #ffffff;
  --color-success: #2ecc71;
  --color-error: #e74c3c;

  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.12);
  --transition: 0.3s ease;

  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-dark);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

ul {
  list-style: none;
}

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

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

/* ===== Container ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  transition: all var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
  text-align: center;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(230, 57, 70, 0.35);
}

.btn--outline {
  background: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}

.btn--outline:hover {
  background: var(--color-white);
  color: var(--color-dark);
  transform: translateY(-2px);
}

.btn--lg {
  padding: 16px 36px;
  font-size: 1.1rem;
}

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

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(26, 26, 46, 0.95);
  backdrop-filter: blur(10px);
  height: var(--header-height);
  transition: box-shadow var(--transition);
}

.header--scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-white);
}

.logo span {
  color: var(--color-primary);
}

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

.nav__link {
  color: rgba(255, 255, 255, 0.8);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-white);
}

.nav__link:hover::after,
.nav__link--active::after {
  width: 100%;
}

/* Burger */
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px 0;
}

.burger span {
  display: block;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: all var(--transition);
}

.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 ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background:
    linear-gradient(135deg, rgba(26, 26, 46, 0.92), rgba(22, 33, 62, 0.88)),
    url('https://images.unsplash.com/photo-1534438327276-14e5300c3a48?w=1600&q=80') center/cover no-repeat;
  color: var(--color-white);
  text-align: center;
  padding-top: var(--header-height);
}

.hero__inner {
  padding: 60px 0;
}

.hero__title {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  opacity: 0.85;
  margin-bottom: 36px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero__actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

.hero__stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}

.hero__stat {
  text-align: center;
}

.hero__stat strong {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
}

.hero__stat span {
  font-size: 0.9rem;
  opacity: 0.7;
}

/* ===== SECTIONS ===== */
.section {
  padding: 80px 0;
}

.section--dark {
  background: var(--color-dark);
  color: var(--color-white);
}

.section__title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  text-align: center;
  margin-bottom: 8px;
}

.section__subtitle {
  text-align: center;
  opacity: 0.7;
  font-size: 1.1rem;
  margin-bottom: 48px;
}

/* ===== BENEFITS ===== */
.benefits__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.benefit-card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

.benefit-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.benefit-card__icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.benefit-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.benefit-card__text {
  font-size: 0.95rem;
  color: var(--color-gray);
  line-height: 1.5;
}

/* ===== PROGRAMS ===== */
.programs__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}

.program-card {
  background: var(--color-dark-alt);
  border-radius: var(--radius);
  padding: 32px 28px;
  position: relative;
  border: 2px solid transparent;
  transition: transform var(--transition), border-color var(--transition);
}

.program-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary);
}

.program-card--featured {
  border-color: var(--color-primary);
  transform: scale(1.04);
}

.program-card--featured:hover {
  transform: scale(1.04) translateY(-4px);
}

.program-card__badge {
  display: inline-block;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 16px;
}

.program-card__title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.program-card__desc {
  font-size: 0.95rem;
  opacity: 0.75;
  margin-bottom: 20px;
  line-height: 1.5;
}

.program-card__price {
  font-size: 1rem;
  opacity: 0.7;
  margin-bottom: 20px;
}

.program-card__amount {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  opacity: 1;
}

.program-card__features {
  margin-bottom: 24px;
}

.program-card__features li {
  padding: 6px 0;
  font-size: 0.95rem;
  opacity: 0.85;
}

.program-card__features li::before {
  content: '✓ ';
  color: var(--color-primary);
  font-weight: 700;
}

/* ===== GALLERY ===== */
.gallery__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.gallery__item {
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  position: relative;
  aspect-ratio: 4/3;
}

.gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}

.gallery__item:hover img {
  transform: scale(1.08);
}

.gallery__item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0);
  transition: background var(--transition);
}

.gallery__item:hover::after {
  background: rgba(0, 0, 0, 0.2);
}

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.92);
  z-index: 2000;
  align-items: center;
  justify-content: center;
}

.lightbox--active {
  display: flex;
}

.lightbox__img {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: var(--radius);
  object-fit: contain;
}

.lightbox__close {
  position: absolute;
  top: 20px;
  right: 24px;
  font-size: 2.5rem;
  color: var(--color-white);
  transition: opacity var(--transition);
}

.lightbox__close:hover {
  opacity: 0.7;
}

.lightbox__prev,
.lightbox__next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 2rem;
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.1);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}

.lightbox__prev:hover,
.lightbox__next:hover {
  background: rgba(255, 255, 255, 0.25);
}

.lightbox__prev {
  left: 20px;
}

.lightbox__next {
  right: 20px;
}

/* ===== BOOKING FORM ===== */
.booking-form {
  max-width: 700px;
  margin: 0 auto;
}

.booking-form__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 28px;
}

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

.form-group label {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 6px;
  opacity: 0.9;
}

.form-group input,
.form-group select {
  padding: 14px 16px;
  border: 2px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-white);
  font-size: 1rem;
  transition: border-color var(--transition);
  outline: none;
}

.form-group input::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--color-primary);
}

.form-group select option {
  background: var(--color-dark);
  color: var(--color-white);
}

.form-group--error input,
.form-group--error select {
  border-color: var(--color-error);
}

.form-error {
  font-size: 0.8rem;
  color: var(--color-error);
  margin-top: 4px;
  min-height: 1.2em;
}

.booking-form__submit {
  margin-bottom: 16px;
}

.booking-form__status {
  text-align: center;
  font-size: 1rem;
  font-weight: 600;
  min-height: 1.5em;
  margin-bottom: 12px;
}

.booking-form__status--success {
  color: var(--color-success);
}

.booking-form__status--error {
  color: var(--color-error);
}

.booking-form__disclaimer {
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.5;
}

.booking-form__disclaimer a {
  text-decoration: underline;
}

/* ===== REVIEWS ===== */
.reviews__slider {
  overflow: hidden;
  position: relative;
}

.reviews__track {
  display: flex;
  transition: transform 0.5s ease;
}

.review-card {
  min-width: 100%;
  padding: 40px;
  text-align: center;
}

.review-card__stars {
  color: #f1c40f;
  font-size: 1.3rem;
  margin-bottom: 16px;
}

.review-card__text {
  font-size: 1.15rem;
  line-height: 1.7;
  max-width: 640px;
  margin: 0 auto 20px;
  color: var(--color-dark);
}

.review-card__author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.review-card__author strong {
  font-size: 1rem;
}

.review-card__author span {
  font-size: 0.9rem;
  opacity: 0.6;
}

.reviews__controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 20px;
}

.reviews__btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-gray-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--color-dark);
  transition: all var(--transition);
}

.reviews__btn:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.reviews__dots {
  display: flex;
  gap: 8px;
}

.reviews__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-gray-light);
  cursor: pointer;
  transition: background var(--transition);
  border: none;
}

.reviews__dot--active {
  background: var(--color-primary);
}

/* ===== CONTACTS ===== */
.contacts__grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 40px;
  align-items: start;
}

.contacts__item {
  margin-bottom: 20px;
}

.contacts__item strong {
  display: block;
  margin-bottom: 4px;
  font-size: 1rem;
}

.contacts__item p {
  opacity: 0.8;
}

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

.contacts__socials {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

.contacts__social {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  font-weight: 700;
  font-size: 0.85rem;
  transition: all var(--transition);
}

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

/* ===== FOOTER ===== */
.footer {
  background: #111;
  color: var(--color-white);
  padding: 32px 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.logo--footer {
  font-size: 1.3rem;
}

.footer__links {
  display: flex;
  gap: 20px;
}

.footer__links a {
  font-size: 0.9rem;
  opacity: 0.6;
  transition: opacity var(--transition);
}

.footer__links a:hover {
  opacity: 1;
}

.footer__copy {
  font-size: 0.85rem;
  opacity: 0.4;
}

/* ===== Animations ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in--visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 992px) {
  .benefits__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .programs__grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }

  .program-card--featured {
    transform: none;
  }

  .program-card--featured:hover {
    transform: translateY(-4px);
  }

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

@media (max-width: 768px) {
  .nav {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: var(--color-dark);
    flex-direction: column;
    padding: 24px 20px;
    gap: 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  }

  .nav--open {
    display: flex;
  }

  .burger {
    display: flex;
  }

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

  .booking-form__grid {
    grid-template-columns: 1fr;
  }

  .hero__stats {
    gap: 24px;
  }

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

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

@media (max-width: 480px) {
  .benefits__grid {
    grid-template-columns: 1fr;
  }

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

  .hero__actions {
    flex-direction: column;
    align-items: center;
  }

  .section {
    padding: 56px 0;
  }
}