:root {
  color-scheme: light dark;
  --bg: #0f172a;
  --panel: #1e293b;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --radius: 16px;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: linear-gradient(135deg, #020617, #0f172a 60%, #0b1120);
  color: white;
}

.hero {
  padding: 72px 20px;
  text-align: center;
}

.hero__content {
  max-width: 720px;
  margin: 0 auto;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.25em;
  font-size: 0.75rem;
  color: var(--accent);
}

h1 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  margin: 16px 0;
}

.lede {
  font-size: 1.1rem;
  color: var(--muted);
  margin-bottom: 24px;
}

.cta {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 999px;
  background: var(--accent);
  color: #0f172a;
  text-decoration: none;
  font-weight: 600;
}

main {
  max-width: 960px;
  margin: 0 auto 96px;
  padding: 0 20px;
  display: grid;
  gap: 32px;
}

.panel {
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: var(--radius);
  padding: 32px;
  backdrop-filter: blur(12px);
}

.panel__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-weight: 500;
}

input,
textarea,
button {
  border-radius: 10px;
  border: 1px solid rgba(148, 163, 184, 0.3);
  background: rgba(15, 23, 42, 0.6);
  color: white;
  padding: 12px;
  font-size: 1rem;
}

button {
  cursor: pointer;
  border: none;
  background: var(--accent);
  color: #0f172a;
  font-weight: 600;
  transition: transform 0.1s ease;
}

button:active {
  transform: scale(0.98);
}

#form-status {
  min-height: 24px;
  color: var(--muted);
}

.alerts {
  display: grid;
  gap: 16px;
}

.alert-card {
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: 12px;
  padding: 16px;
  background: rgba(15, 23, 42, 0.6);
}

.alert-card h3 {
  margin: 0 0 8px;
}

.alert-card ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

@media (min-width: 900px) {
  main {
    grid-template-columns: repeat(2, 1fr);
  }

  #onboard {
    grid-column: span 2;
  }
}