:root {
  --bg: #0b1220;
  --surface: rgba(20, 31, 53, 0.75);
  --surface-border: rgba(148, 163, 184, 0.2);
  --text-main: #f8fafc;
  --text-subtle: #cbd5e1;
  --accent: #3b82f6;
  --accent-soft: rgba(59, 130, 246, 0.2);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, Segoe UI, sans-serif;
  color: var(--text-main);
  background:
    radial-gradient(circle at 10% 20%, rgba(59, 130, 246, 0.25), transparent 40%),
    radial-gradient(circle at 90% 10%, rgba(14, 165, 233, 0.18), transparent 35%),
    linear-gradient(160deg, #0b1220, #0e172d 45%, #111c34);
}

.app-shell {
  width: 100%;
  margin: 0 auto;
  padding: 1.2rem 1.2rem 1rem;
}

.top-bar {
  display: block;
  margin-bottom: 1.6rem;
}

.brand-strip {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
  align-items: center;
}

.brand-strip img {
  width: 100%;
  height: 84px;
  object-fit: contain;
  display: block;
  border-radius: 10px;
  padding: 0.4rem;
  background: #f8fafc;
  border: 1px solid rgba(148, 163, 184, 0.25);
}

.content-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}

.card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 16px;
  padding: 1.15rem;
  backdrop-filter: blur(10px);
  box-shadow: 0 12px 32px rgba(2, 6, 23, 0.35);
}

.card h2 {
  margin: 0;
  font-size: 1.2rem;
}

.subtitle {
  margin: 0.35rem 0 0.9rem;
  color: var(--text-subtle);
  font-size: 0.92rem;
}

.video-frame-wrap {
  width: min(100%, calc((100vh - 260px) * (16 / 9)));
  max-height: calc(100vh - 260px);
  margin: 0 auto;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--accent-soft);
  background: #020617;
  aspect-ratio: 16 / 9;
}

.video-frame-wrap iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.logo-fallback,
.video-fallback {
  min-height: 100%;
  border-radius: 8px;
  display: grid;
  place-items: center;
  padding: 0.9rem;
  text-align: center;
  font-size: 0.84rem;
  color: #1e293b;
  background: #e2e8f0;
}

.footer {
  margin-top: 1.2rem;
  color: var(--text-subtle);
  font-size: 0.84rem;
}

@media (max-width: 900px) {
  .brand-strip {
    grid-template-columns: 1fr;
  }

  .brand-strip img {
    height: 72px;
  }

  .video-frame-wrap {
    width: 100%;
    max-height: calc(100vh - 220px);
  }
}