:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
  background: #070b16;
  color: #f4f7ff;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: radial-gradient(circle at top, #172554, #070b16 55%); }
.shell { width: min(680px, calc(100% - 32px)); margin: 0 auto; padding: 72px 0; }
.eyebrow { color: #a78bfa; font-size: 0.78rem; font-weight: 800; letter-spacing: 0.16em; }
h1 { margin: 8px 0 16px; font-size: clamp(2.4rem, 8vw, 5rem); line-height: 0.95; }
.intro { max-width: 58ch; color: #bdc7dc; line-height: 1.7; }
.login-card { display: grid; gap: 12px; margin-top: 36px; padding: 24px; border: 1px solid #334155; border-radius: 18px; background: rgb(15 23 42 / 84%); }
label { font-weight: 700; }
input, button { width: 100%; min-height: 48px; border-radius: 10px; font: inherit; }
input { border: 1px solid #475569; padding: 0 14px; background: #0f172a; color: inherit; }
button { border: 0; padding: 0 18px; background: #8b5cf6; color: white; font-weight: 800; cursor: pointer; }
output { min-height: 1.5em; color: #c4b5fd; }

@media (max-width: 480px) {
  .shell { padding-top: 40px; }
  .login-card { padding: 18px; }
}