.auth { flex: 1; display: flex; align-items: center; justify-content: center; padding: 20px; }
.auth-card {
  width: 100%; max-width: 400px; background: var(--card);
  border: 1px solid var(--border); border-radius: 16px;
  padding: 32px 24px;
  box-shadow: 0 0 40px rgba(220, 38, 38, 0.15);
}
.auth-card h1 {
  font-size: 26px; margin-bottom: 8px;
  background: linear-gradient(135deg, #fff, var(--red-bright));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.auth-card p.sub { color: var(--muted); font-size: 14px; margin-bottom: 24px; }
.auth-card label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; margin-top: 16px; }
.auth-card .btn { margin-top: 24px; }
.auth-switch { text-align: center; margin-top: 20px; color: var(--muted); font-size: 14px; }
.auth-switch a { cursor: pointer; }
.error {
  background: #3a0a0a; color: #ff9999; border: 1px solid #7a1010;
  padding: 10px 14px; border-radius: 8px; font-size: 13px; margin-top: 12px;
  display: none; word-break: break-word;
}