/* frontend/css/index.css */
/* ===== ГЛАВНЫЙ БАННЕР ===== */
.hero {
  background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)),
    url("../images/hero-bg.jpg");
  background-size: cover;
  background-position: center;
  color: white;
  text-align: center;
  padding: 180px 20px 120px;
  margin-top: 70px;
}

.hero-title {
  font-size: 48px;
  margin-bottom: 20px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-text {
  font-size: 20px;
  margin-bottom: 40px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== ПРЕИМУЩЕСТВА ===== */
.features {
  padding: 80px 0;
  background: linear-gradient(135deg, #e8f4f8 0%, #d4eaf0 100%);
}

.section-title {
  text-align: center;
  font-size: 36px;
  margin-bottom: 50px;
  color: #2c3e50;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.feature-card {
  text-align: center;
  padding: 30px;
  border-radius: 10px;
  background-color: white;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.feature-icon {
  font-size: 50px;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 24px;
  margin-bottom: 15px;
  color: #2c3e50;
}

.feature-card p {
  color: #7f8c8d;
}

/* ===== ИЗБРАННЫЕ ДОСТОПРИМЕЧАТЕЛЬНОСТИ ===== */
.featured {
  padding: 0 0 50px;
  background: linear-gradient(135deg, #e8f4f8 0%, #d4eaf0 100%);
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
  margin: 40px 0;
}

.featured-card {
  background: white;
  padding: 25px;
  border-radius: 15px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  border-left: 4px solid #3498db;
  transition: transform 0.3s;
}

.featured-card:hover {
  transform: translateY(-5px);
}

.featured-card h3 {
  color: #2c3e50;
  margin: 0 0 10px 0;
  font-size: 20px;
}

.featured-card p {
  color: #7f8c8d;
  margin: 5px 0;
}

.featured-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 10px;
  margin-bottom: 10px;
}

.featured a {
  text-decoration: none;
  color: inherit;
  display: block;
}

/* ============================================ */
/* ===== УНИВЕРСАЛЬНАЯ АДАПТАЦИЯ ДЛЯ ВСЕХ УСТРОЙСТВ ===== */
/* ============================================ */

/* Планшеты (до 992px) */
@media (max-width: 992px) {
  .hero {
    padding: 140px 20px 90px;
  }

  .hero-title {
    font-size: 40px;
  }

  .hero-text {
    font-size: 18px;
  }

  .section-title {
    font-size: 32px;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .featured-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}

/* Планшеты-мини (до 768px) */
@media (max-width: 768px) {
  .hero {
    padding: 120px 20px 70px;
    margin-top: 130px;
  }

  .hero-title {
    font-size: 32px;
  }

  .hero-text {
    font-size: 16px;
  }

  .section-title {
    font-size: 28px;
    margin-bottom: 30px;
  }

  .features {
    padding: 50px 0;
  }

  .feature-card {
    padding: 20px;
  }

  .feature-icon {
    font-size: 40px;
  }

  .feature-card h3 {
    font-size: 20px;
  }

  .featured-card {
    padding: 18px;
  }

  .featured-card h3 {
    font-size: 18px;
  }

  .featured-card img {
    height: 160px;
  }
}

/* Маленькие телефоны (до 576px) — ОДНА КОЛОНКА */
@media (max-width: 576px) {
  .hero {
    padding: 200px 25px 50px;
    margin-top: 80px;
  }

  .hero-title {
    font-size: 28px;
  }

  .hero-text {
    font-size: 15px;
  }

  .section-title {
    font-size: 24px;
  }

  /* 🔥 ОДНА КОЛОНКА для всех телефонов */
  .features-grid {
    grid-template-columns: 1fr;
    gap: 15px;
    padding: 0 15px;
  }

  .featured-grid {
    grid-template-columns: 1fr;
    gap: 15px;
    padding: 0 15px;
  }

  .feature-card {
    padding: 20px;
    margin: 0 5px;
  }

  .feature-icon {
    font-size: 36px;
  }

  .feature-card h3 {
    font-size: 18px;
  }

  .feature-card p {
    font-size: 14px;
  }

  .featured-card {
    padding: 15px;
  }

  .featured-card h3 {
    font-size: 16px;
  }

  .featured-card p {
    font-size: 13px;
  }

  .featured-card img {
    height: 180px;
  }

  .btn-primary {
    padding: 12px 24px;
    font-size: 14px;
  }

  .footer {
    font-size: 12px;
  }
}

/* Очень маленькие телефоны (до 400px) — дополнительная оптимизация */
@media (max-width: 400px) {
  .hero {
    padding: 100px 22px 40px;
    margin-top: 130px;
  }

  .hero-title {
    font-size: 24px;
  }

  .hero-text {
    font-size: 14px;
  }

  .section-title {
    font-size: 22px;
  }

  .feature-card {
    padding: 15px;
  }

  .feature-icon {
    font-size: 32px;
  }

  .feature-card h3 {
    font-size: 16px;
  }

  .feature-card p {
    font-size: 13px;
  }

  .featured-card {
    padding: 12px;
  }

  .featured-card h3 {
    font-size: 15px;
  }

  .featured-card p {
    font-size: 12px;
  }

  .featured-card img {
    height: 150px;
  }

  .btn-primary {
    padding: 10px 20px;
    font-size: 13px;
  }
  .footer {
    font-size: 10px;
  }
}