:root {
  --bg: #0f172a;
  --bg-card: #1e293b;
  --fg: #e2e8f0;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --accent-2: #a855f7;
  --border: #334155;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.hero {
  text-align: center;
  padding: 4rem 1.5rem 2.5rem;
  background: radial-gradient(circle at 50% 0%, rgba(56, 189, 248, 0.18), transparent 60%);
}

.hero.small { padding: 1.5rem; text-align: left; }

.logo { display: block; }
.logo-big { height: clamp(4rem, 14vw, 7rem); width: auto; margin: 0 auto; }
.logo-small { height: 2rem; width: auto; }

.tagline { color: var(--muted); font-size: 1.15rem; margin-top: 0.5rem; }

.container {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: 1.5rem;
  flex: 1;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.card.center { text-align: center; }

h2 { margin-top: 0; }

.muted { color: var(--muted); }
.small-text { font-size: 0.85rem; word-break: break-all; }

.video-wrap {
  position: relative;
  width: 100%;
  background: #000;
  border-radius: 12px;
  overflow: hidden;
}
.video-wrap video { display: block; width: 100%; height: auto; max-height: 80vh; }

.actions { text-align: center; }

.preview-img {
  display: block;
  width: 100%;
  max-width: 520px;
  height: auto;
  margin: 1rem auto 0;
  border-radius: 12px;
}

.btn {
  display: inline-block;
  margin: 1rem 0.4rem 0;
  padding: 0.65rem 1.4rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0b1120;
  font-weight: 700;
  text-decoration: none;
  border-radius: 10px;
}

.btn-secondary {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--border);
}

.notice {
  margin-bottom: 1.25rem;
  padding: 0.75rem 1rem;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.4);
  border-radius: 10px;
  color: #fbbf24;
  font-size: 0.9rem;
  text-align: center;
}

.spinner {
  width: 44px;
  height: 44px;
  margin: 1.5rem auto 0;
  border: 4px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.footer {
  text-align: center;
  padding: 1.5rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.footer-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}
.footer-link:hover { text-decoration: underline; }