:root {
  --color-bg: #0a0a0a;
  --color-bg-secondary: #1c1c1c;
  --color-accent: #4e90fe;
  --color-text: #e0e0e0;
  --color-light: #ffffff;
  --font-primary: 'Inter', sans-serif;
  --transition: 0.4s ease;
}

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

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-primary);
  line-height: 1.6;
  scroll-behavior: smooth;
}

header#header {
  position: fixed;
  top: 0;
  width: 100%;
  background: var(--color-bg-secondary);
  z-index: 1000;
  padding: 0.5rem 2rem;
}

.nav ul {
  list-style: none;
  display: flex;
  justify-content: flex-end;
  gap: 1.5rem;
}

.nav a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}

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

.hero {
  height: 100vh;
  background: url('https://source.unsplash.com/collection/190727/1600x900?sig=hero') center/cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  text-align: center;
  color: var(--color-light);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.5);
}

.hero-content {
  position: relative;
  max-width: 70%;
  z-index: 1;
}

.hero h1 {
  font-size: 4rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.5rem;
  margin-bottom: 2rem;
}

.cta {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: var(--color-accent);
  color: var(--color-light);
  border-radius: 0.5rem;
  text-decoration: none;
  transition: var(--transition);
}

.cta:hover {
  background: #3b7ae0;
}

.section {
  padding: 5rem 2rem;
  min-height: 80vh;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
  color: var(--color-accent);
}

.features .cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.card {
  background: var(--color-bg-secondary);
  border-radius: 0.75rem;
  overflow: hidden;
  transform: translateY(20px);
  opacity: 0;
  transition: transform 0.5s var(--transition), opacity 0.5s var(--transition);
  cursor: pointer;
  transition: var(--transition);
}

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

.card h3 {
  padding: 1rem;
  font-size: 1.25rem;
  color: var(--color-light);
}

.card p {
  padding: 0 1rem 1rem;
  font-size: 0.95rem;
  color: var(--color-text);
}

.card:hover img {
  transform: scale(1.05);
}

.card.revealed {
  transform: translateY(0);
  opacity: 1;
}

.content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  font-size: 1.1rem;
}

.content p {
  margin-bottom: 2rem;
}

.footer {
  background: var(--color-bg-secondary);
  text-align: center;
  padding: 1rem;
  color: var(--color-text);
  font-size: 0.9rem;
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }
  .hero p {
    font-size: 1.2rem;
  }
}