:root {
  color-scheme: dark;
  --bg: #0f1117;
  --card: #191d27;
  --text: #e9edf7;
  --muted: #b6bfd3;
  --accent: #7c9dff;
  --accent-hover: #9db4ff;
  --ring: rgba(124, 157, 255, 0.4);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: radial-gradient(circle at top, #161b28 0%, var(--bg) 45%);
  color: var(--text);
  min-height: 100vh;
}

.hero,
main,
footer {
  width: min(1100px, 92%);
  margin: 0 auto;
}

.hero {
  padding: 3.5rem 0 2rem;
  text-align: center;
}

.hero-banner {
  width: 100%;
  max-width: 1024px;
  border-radius: 14px;
  display: block;
  margin: 0 auto 1.2rem;
  border: 1px solid #2b3140;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.28);
}

.channel-link {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
  color: #ffffff;
  background: linear-gradient(135deg, #ff0033 0%, #ff2a5f 100%);
  padding: 0.78rem 1.15rem;
  border-radius: 999px;
  font-weight: 700;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 10px 24px rgba(255, 0, 76, 0.28);
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

.channel-link:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(255, 0, 76, 0.35);
  filter: brightness(1.05);
}

.yt-icon {
  width: 1.2rem;
  height: 1.2rem;
  fill: currentColor;
}

h2 {
  font-size: 1.45rem;
  margin: 1rem 0 1rem;
  text-align: left;
}

.video-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  padding-bottom: 1.5rem;
}

.video-card {
  background: linear-gradient(180deg, #212737 0%, var(--card) 100%);
  border: 1px solid #2b3140;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.2);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.video-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.3);
}

.video-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

.thumbnail {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

.video-meta {
  padding: 0.8rem 0.9rem 1rem;
}

.video-title {
  margin: 0;
  font-size: 1rem;
}

.video-subtitle {
  margin: 0.4rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.video-link:focus-visible,
.channel-link:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px var(--ring);
}

footer {
  border-top: 1px solid #2b3140;
  color: var(--muted);
  padding: 1.2rem 0 2rem;
  font-size: 0.9rem;
}