:root {
  --bg-color: #0f0f0f;
  --text-primary: #e0e0e0;
  --text-secondary: #a0a0a0;
  --card-bg: #1a1a1a;
  --accent: #4a9eff;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  margin: 0;
  padding: 0;
  line-height: 1.6;
}

header {
  padding: 2rem;
  text-align: center;
  border-bottom: 1px solid #333;
}

h1 {
  margin: 0;
  font-size: 2.5rem;
}

h2 {
  color: var(--text-secondary);
  font-weight: 400;
  font-size: 1.2rem;
  margin-top: 0.5rem;
}

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
}

.video-card {
  background-color: var(--card-bg);
  border-radius: 12px;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

.video-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.5);
}

.video-wrapper {
  position: relative;
  width: 100%;
  background: #000;
}

video {
  width: 100%;
  display: block;
  outline: none;
}

.video-info {
  padding: 1.5rem;
}

.video-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  text-transform: capitalize;
}

.tag {
  display: inline-block;
  background-color: #333;
  color: var(--accent);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-size: 0.8rem;
  margin-top: 0.5rem;
}

.nav-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  border-bottom: 1px solid #333;
  background-color: var(--card-bg);
}

.nav-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  transition: opacity 0.3s ease;
}

.nav-link:hover {
  opacity: 0.7;
}

@media (max-width: 768px) {
  .nav-bar {
    flex-direction: column;
    gap: 1rem;
  }
}