:root { color-scheme: dark; font-family: system-ui, sans-serif; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; padding: 24px;
    color: #f1f5f9; background: radial-gradient(ellipse at 50% 0%, #2e1c53, transparent 60%), #0b0f19; }
.login-card { width: 100%; max-width: 440px; padding: 40px; border: 1px solid #334155;
    border-radius: 24px; background: #111827; box-shadow: 0 24px 80px #0005; }
.brand-icon { display: grid; place-items: center; width: 52px; height: 52px; margin-bottom: 28px;
    border-radius: 16px; background: linear-gradient(135deg, #9333ea, #4f46e5); font-size: 26px; font-weight: 800; }
.eyebrow { color: #c4b5fd; font-size: 10px; letter-spacing: .17em; font-weight: 700; }
h1 { font-size: 32px; letter-spacing: -.04em; margin: 8px 0; }
.intro { color: #94a3b8; font-size: 14px; margin-bottom: 30px; }
label { display: block; font-size: 13px; font-weight: 600; margin: 18px 0 8px; }
input { width: 100%; padding: 13px; background: #1e293b; border: 1px solid #475569;
    border-radius: 10px; color: #fff; font: inherit; }
input:focus-visible, button:focus-visible { outline: 2px solid #c4b5fd; outline-offset: 3px; }
button { width: 100%; margin-top: 26px; padding: 14px; border: 0; border-radius: 10px;
    background: #7c3aed; color: #fff; font: inherit; font-weight: 650; cursor: pointer; }
button span { float: right; }
button:hover { background: #8b5cf6; }
button:disabled { opacity: .5; cursor: default; }
.message { color: #fecaca; background: #7f1d1d33; border: 1px solid #7f1d1d;
    border-radius: 10px; padding: 12px; font-size: 13px; line-height: 1.6; overflow-wrap: anywhere; }
.footer { color: #94a3b8; text-align: center; font-size: 12px; margin: 28px 0 0; }
@media (max-width: 480px) { .login-card { padding: 28px; } }