@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600&display=swap');

:root {
  --bg: #0f172a;
  --panel: #111827;
  --muted: #cbd5e1;
  --text: #e2e8f0;
  --accent: #38bdf8;
  --accent-strong: #22d3ee;
  --border: rgba(255, 255, 255, 0.08);
  --radius: 16px;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at 20% 20%, rgba(34, 211, 238, 0.2), transparent 35%),
              radial-gradient(circle at 80% 0%, rgba(56, 189, 248, 0.25), transparent 30%),
              var(--bg);
  font-family: 'Space Grotesk', 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--text);
  padding: 24px;
}

.page {
  max-width: 960px;
  margin: 0 auto;
}

.hero {
  padding: 32px;
  border: 1px solid var(--border);
  background: linear-gradient(145deg, rgba(17, 24, 39, 0.85), rgba(17, 24, 39, 0.7));
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.a2hs-banner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
  margin-bottom: 16px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  background: rgba(34, 211, 238, 0.08);
  color: var(--text);
  border-radius: 12px;
  backdrop-filter: blur(8px);
}

.a2hs-banner.hidden {
  display: none;
}

.banner-title {
  margin: 0 0 4px;
  font-weight: 700;
}

.banner-text {
  margin: 0;
  color: var(--muted);
}

.banner-actions {
  display: flex;
  gap: 8px;
}

.btn.sm {
  padding: 8px 12px;
  font-size: 14px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-strong);
  font-weight: 600;
  letter-spacing: 0.03em;
}

h1 {
  margin: 12px 0 8px;
  font-size: clamp(32px, 4vw, 42px);
  letter-spacing: -0.02em;
}

.lede {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 18px;
}

.hint {
  color: var(--muted);
  margin-top: 12px;
}

.cta-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 18px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.btn:hover {
  transform: translateY(-1px);
  border-color: rgba(255, 255, 255, 0.12);
}

.btn:active {
  transform: translateY(0);
}

.btn.primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-strong));
  color: #0b1224;
  border: none;
  box-shadow: 0 10px 30px rgba(56, 189, 248, 0.35);
}

.btn.secondary {
  background: rgba(255, 255, 255, 0.08);
}

.btn.ghost {
  background: transparent;
}

.grid {
  margin: 24px 0;
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
  padding: 20px;
  background: rgba(17, 24, 39, 0.85);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.card h2 {
  margin: 0 0 8px;
}

.card p {
  margin: 0;
  color: var(--muted);
}

form {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 8px 0;
}

label {
  font-size: 14px;
  color: var(--muted);
}

input {
  border-radius: 10px;
  border: 1px solid var(--border);
  padding: 12px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.code-block {
  background: rgba(0, 0, 0, 0.35);
  border-radius: 12px;
  padding: 12px;
  border: 1px solid var(--border);
  color: var(--accent);
  overflow: auto;
}

.footer {
  color: var(--muted);
  font-size: 14px;
  display: grid;
  gap: 4px;
}

.footer code {
  color: var(--text);
}

.small {
  font-size: 12px;
}

@media (max-width: 600px) {
  body {
    padding: 16px;
  }
  .hero {
    padding: 24px;
  }
}