:root {
  --bg: #121212;
  --fg: #e0e0e0;
  --primary: #00d1b2;
  --secondary: #292929;
  --accent: #ffdd57;
  --radius: 0.75rem;
  --gap: 0.75rem;
}

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

body {
  font-family: 'Montserrat', sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
}

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

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: var(--gap) 2rem;
}

header {
  background: var(--secondary);
  padding: var(--gap) 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--primary);
}

.nav ul {
  list-style: none;
  display: flex;
  gap: var(--gap);
}

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

@media (max-width: 600px) {
  .nav ul {
    display: none;
  }
}

.hero {
  text-align: center;
  padding: 4rem 0;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--primary);
}

.hero p {
  font-size: 1.125rem;
  color: var(--fg);
}

section {
  margin: var(--gap) 0;
}

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

.card {
  background: var(--secondary);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, background 0.2s ease;
}

.card:hover {
  transform: translateY(-5px);
  background: #383838;
}

.card img {
  width: 100%;
  max-height: 140px;
  height: auto;
  object-fit: contain;
  object-position: center center;
  background: var(--secondary);
  display: block;
}

.card-content {
  padding: 1rem;
  flex-grow: 1;
}

.card-content h3 {
  margin-bottom: 0.5rem;
  font-size: 1.25rem;
  color: var(--accent);
}

.card-content p {
  flex-grow: 1;
  margin-bottom: 1rem;
}

.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--primary);
  color: var(--bg);
  border: none;
  cursor: pointer;
  border-radius: var(--radius);
  font-weight: 600;
  transition: background 0.2s ease;
}

.btn:hover {
  background: var(--accent);
}

footer {
  text-align: center;
  padding: var(--gap) 0;
  font-size: 0.875rem;
  color: #888;
}