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

body {
  font-family: 'Inter', sans-serif;
  background: #000;
  color: #fff;
}

/* ФОН */
.hero {
  min-height: 100vh;
  background: url("img/bg-desktop.jpg") center/cover no-repeat fixed;
}

@media (max-width: 768px) {
  .hero {
    background: url("img/bg-mobile.jpg") center/cover no-repeat;
  }
}

/* НАВИГАЦИЯ */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 40px;
}

.logo {
  height: 64px;
}

.nav-links a {
  margin-left: 20px;
  text-decoration: none;
  color: #fff;
  opacity: 0.8;
}

.nav-links a:hover {
  opacity: 1;
}

/* HERO */
.hero-content {
  text-align: center;
  margin-top: 15vh;
  padding: 0 20px;
}

.hero h1 {
  font-size: clamp(40px, 6vw, 80px);
  letter-spacing: 4px;
}

.hero p {
  max-width: 600px;
  margin: 20px auto;
  opacity: 0.85;
}

.btn {
  display: inline-block;
  margin-top: 30px;
  padding: 14px 36px;
  border: 1px solid #fff;
  color: #fff;
  text-decoration: none;
  transition: 0.3s;
}

.btn:hover {
  background: #fff;
  color: #000;
  transform: scale(1.05);
}

/* СЕКЦИИ */
.section {
  padding: 100px 40px;
  max-width: 1200px;
  margin: auto;
}

.section h2 {
  font-size: 36px;
  margin-bottom: 20px;
}

/* КАРТОЧКИ */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 30px;
}

.card {
  background: #0d0d0d;
  border: 1px solid #222;
  transition: 0.4s;
  overflow: hidden;
}

.card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.card h3 {
  margin: 16px;
}

.card p {
  margin: 0 16px 20px;
  opacity: 0.8;
}

.card:hover {
  transform: translateY(-8px) scale(1.02);
  border-color: #fff;
}

/* ФУТЕР */
.footer {
  padding: 40px;
  text-align: center;
  border-top: 1px solid #222;
}

.footer a {
  margin: 0 15px;
  color: #fff;
  text-decoration: none;
  opacity: 0.7;
}

.footer a:hover {
  opacity: 1;
}

/* АНИМАЦИИ */
.fade-up {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 1s ease forwards;
}

.delay-1 { animation-delay: 0.3s; }
.delay-2 { animation-delay: 0.6s; }

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