:root {
  color-scheme: light;
  --bg: #f6f8fb;
  --surface: #ffffff;
  --text: #1a2332;
  --muted: #5a6578;
  --accent: #0d6e6e;
  --accent-soft: #e0f2f2;
  --border: #d8e0ea;
  --radius: 12px;
  --shadow: 0 8px 28px rgba(26, 35, 50, 0.08);
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Ubuntu, sans-serif;
  line-height: 1.55;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(1200px 600px at 10% -10%, #d4eef0, transparent),
    radial-gradient(900px 500px at 100% 0%, #e8e6ff, transparent), var(--bg);
  color: var(--text);
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  text-decoration: none;
}

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.25rem 1.25rem 3rem;
}

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 0 1.5rem;
}

.site-header--auth {
  padding-bottom: 0.5rem;
}

.brand {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}

.brand a {
  color: inherit;
  text-decoration: none;
}

.nav-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.nav-actions a {
  font-size: 0.95rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.55rem 1rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}

.btn--primary {
  background: var(--accent);
  color: #fff;
}

.btn--primary:hover {
  filter: brightness(1.05);
}

.btn--ghost {
  background: var(--surface);
  border-color: var(--border);
  color: var(--text);
}

.btn--ghost:hover {
  border-color: var(--accent);
}

.hero {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2rem 1.75rem;
  margin-bottom: 2rem;
}

.hero h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  line-height: 1.2;
}

.lede {
  font-size: 1.1rem;
  color: var(--muted);
  margin: 0 0 1.5rem;
}

.lede--tight-below {
  margin-bottom: 1rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.pill {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.grid-2 {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 720px) {
  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

.card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 1.25rem 1.35rem;
  box-shadow: var(--shadow);
}

.card h2 {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

.section-title {
  margin: 2.5rem 0 1rem;
  font-size: 1.35rem;
}

.section-title--flush-top {
  margin-top: 0;
}

.sources {
  font-size: 0.88rem;
  color: var(--muted);
}

.sources ol {
  margin: 0.5rem 0 0;
  padding-left: 1.2rem;
}

.footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--muted);
}

/* Auth pages */
.auth-layout {
  max-width: 440px;
  margin: 0 auto;
  padding: 1.25rem 1.25rem 3rem;
}

.auth-card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 1.5rem 1.35rem;
  box-shadow: var(--shadow);
}

.auth-card h1 {
  margin: 0 0 0.35rem;
  font-size: 1.45rem;
}

.auth-sub {
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.form-field {
  margin-bottom: 1rem;
}

.form-field label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.form-field input {
  width: 100%;
  padding: 0.55rem 0.65rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 1rem;
}

.form-field input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.form-actions {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-top: 1.25rem;
}

.form-message {
  margin-top: 1rem;
  padding: 0.65rem 0.75rem;
  border-radius: 8px;
  font-size: 0.9rem;
}

.form-message--error {
  background: #fff0f0;
  color: #8a1c1c;
}

.form-message--success {
  background: #eefcf4;
  color: #14532d;
}

.form-message--info {
  background: #f3f6fa;
  color: var(--muted);
}

.form-message[hidden] {
  display: none;
}

.auth-links {
  margin-top: 1.25rem;
  font-size: 0.92rem;
  color: var(--muted);
}

.auth-links p {
  margin: 0.35rem 0;
}

.stack-gap {
  margin-top: 1.5rem;
}