:root {
  --bg-900: #020617;
  --bg-800: #0f172a;
  --bg-700: #1e293b;
  --text-100: #f8fafc;
  --text-300: #cbd5e1;
  --text-400: #94a3b8;
  --line: rgba(148, 163, 184, 0.2);
  --primary: #3b82f6;
  --primary-strong: #2563eb;
  --accent: #8b5cf6;
  --success: #22c55e;
}

* { box-sizing: border-box; }

body.public-ui {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text-100);
  background: radial-gradient(circle at 10% 0%, #1e3a8a 0%, transparent 40%),
              radial-gradient(circle at 90% 0%, #581c87 0%, transparent 32%),
              linear-gradient(135deg, var(--bg-900) 0%, var(--bg-800) 55%, var(--bg-700) 100%);
  min-height: 100vh;
}

.public-shell { max-width: 1160px; margin: 0 auto; padding: 0 1rem; }
.public-header { padding: 1.25rem 0; border-bottom: 1px solid var(--line); }
.public-nav { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { font-weight: 800; letter-spacing: .02em; text-decoration: none; color: var(--text-100); }
.nav-links { display: flex; gap: .75rem; flex-wrap: wrap; }

.public-btn {
  min-height: 44px; padding: .7rem 1.1rem; border-radius: .75rem; text-decoration: none;
  font-weight: 600; border: 1px solid transparent; display: inline-flex; align-items: center; justify-content: center;
}
.public-btn-primary { background: linear-gradient(135deg, var(--primary-strong), var(--accent)); color: white; }
.public-btn-primary:hover { filter: brightness(1.08); }
.public-btn-ghost { border-color: var(--line); color: var(--text-100); background: rgba(15,23,42,.55); }

.public-hero { padding: 4rem 0 2.5rem; text-align: center; }
.public-hero h1 { font-size: clamp(2rem, 5vw, 4rem); margin: 0 0 1rem; line-height: 1.1; }
.public-hero p { color: var(--text-300); max-width: 720px; margin: 0 auto 1.4rem; }
.badge { display: inline-flex; padding: .4rem .75rem; border-radius: 999px; font-size: .82rem; background: rgba(59,130,246,.2); border: 1px solid rgba(96,165,250,.45); }

.grid-3 { display: grid; gap: 1rem; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.surface { background: rgba(15,23,42,.65); border: 1px solid var(--line); border-radius: 1rem; padding: 1.25rem; }
.surface h3 { margin: .2rem 0 .5rem; }
.surface p { margin: 0; color: var(--text-300); }

.auth-wrap { min-height: 100vh; display: grid; place-items: center; padding: 1rem; }
.auth-card { width: 100%; max-width: 520px; background: rgba(15,23,42,.8); border: 1px solid var(--line); border-radius: 1rem; padding: 1.5rem; }
.auth-card h1 { margin: .2rem 0 .6rem; font-size: 1.8rem; }
.auth-muted { color: var(--text-400); margin-bottom: 1.2rem; }
.form-grid { display: grid; gap: .9rem; }
.form-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.field label { display: block; margin-bottom: .35rem; font-size: .9rem; color: var(--text-300); }
.field input { width: 100%; min-height: 44px; border-radius: .7rem; border: 1px solid var(--line); background: rgba(2,6,23,.55); color: var(--text-100); padding: .65rem .8rem; }
.field input:focus { outline: 2px solid rgba(59,130,246,.5); outline-offset: 1px; }
.small { font-size: .84rem; color: var(--text-400); }
.error-text { color: #fca5a5; font-size: .8rem; margin-top: .2rem; }
.flash { padding: .75rem .9rem; border-radius: .7rem; margin-bottom: .8rem; border: 1px solid; }
.flash-danger { background: rgba(127,29,29,.3); border-color: rgba(248,113,113,.4); }
.flash-success { background: rgba(20,83,45,.3); border-color: rgba(74,222,128,.4); }
.flash-info { background: rgba(30,58,138,.3); border-color: rgba(96,165,250,.4); }

.pricing-grid { display: grid; gap: 1rem; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 1.4rem; }
.plan { position: relative; }
.plan .price { font-size: 2rem; font-weight: 800; margin: .3rem 0; }
.plan ul { margin: .7rem 0 0; padding-left: 1rem; color: var(--text-300); }
.plan.featured { border-color: rgba(96,165,250,.6); box-shadow: 0 0 0 1px rgba(96,165,250,.3) inset; }

.w-full { width: 100%; }
.center-actions { justify-content: center; }
.space-between { justify-content: space-between; width: 100%; }
.links-row { display: flex; justify-content: center; align-items: center; gap: .6rem; flex-wrap: wrap; margin-top: 1rem; }
.auth-meta { margin-top: 1rem; text-align: center; }
.hero-tight { padding-top: 2.5rem; }

@media (max-width: 900px) {
  .grid-3, .pricing-grid { grid-template-columns: 1fr; }
  .form-2 { grid-template-columns: 1fr; }
}