* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body.os-page {
    min-height: 100vh;
    color: #eafaff;
    font-family: Arial, Helvetica, sans-serif;
    background: radial-gradient(circle at top, rgba(0,255,255,0.14), transparent 34%), linear-gradient(180deg, #03040a 0%, #070b14 55%, #05060a 100%);
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 260ms ease, transform 260ms ease;
}
body.os-page.os-ready { opacity: 1; transform: translateY(0); }
body.os-page.os-leaving { opacity: 0; transform: translateY(-10px); }
a { color: inherit; }
.status-line { display: inline-flex; align-items: center; gap: 10px; color: #00ffff; font-size: 12px; letter-spacing: 3px; text-transform: uppercase; }
.status-dot { width: 10px; height: 10px; border-radius: 50%; background: #6dffad; box-shadow: 0 0 14px rgba(109,255,173,0.9); }
.login-shell, .portal-shell { width: min(1100px, calc(100% - 32px)); margin: 0 auto; min-height: 100vh; display: grid; place-items: center; padding: 32px 0; }
.login-card, .portal-head, .portal-card { border: 1px solid rgba(0,255,255,0.22); background: rgba(3, 8, 16, 0.78); backdrop-filter: blur(16px); box-shadow: 0 28px 90px rgba(0,0,0,0.62); border-radius: 28px; }
.login-card { width: min(460px, 100%); padding: 28px; }
h1 { margin: 12px 0; font-size: clamp(42px, 8vw, 82px); line-height: 0.92; letter-spacing: -4px; text-transform: uppercase; }
p { color: rgba(234,250,255,0.68); line-height: 1.6; }
form { display: grid; gap: 12px; margin-top: 22px; }
label { color: rgba(234,250,255,0.78); font-size: 12px; letter-spacing: 2px; text-transform: uppercase; }
input { width: 100%; border: 1px solid rgba(0,255,255,0.22); border-radius: 16px; background: rgba(255,255,255,0.04); color: #fff; padding: 14px 16px; font-size: 18px; }
button, .back-link, .portal-head nav a { border: 1px solid rgba(0,255,255,0.22); border-radius: 999px; background: rgba(0,255,255,0.08); color: #eafaff; padding: 12px 16px; text-decoration: none; cursor: pointer; }
button { font-size: 16px; }
.back-link { display: inline-block; margin-top: 18px; }
.error-box { margin-top: 16px; padding: 12px 14px; border: 1px solid rgba(255,90,90,0.4); border-radius: 14px; background: rgba(255,90,90,0.12); color: #ffd8d8; }
.portal-shell { display: block; }
.portal-head { display: flex; justify-content: space-between; gap: 18px; align-items: flex-start; padding: 26px; margin-bottom: 18px; }
.portal-head nav { display: flex; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
.portal-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.portal-card { min-height: 180px; padding: 22px; text-decoration: none; transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease; }
.portal-card:hover { transform: translateY(-3px); border-color: rgba(0,255,255,0.46); background: rgba(0,255,255,0.08); }
.portal-card i { color: #00ffff; font-size: 28px; margin-bottom: 18px; }
.portal-card strong { display: block; font-size: 22px; margin-bottom: 10px; }
.portal-card span { display: block; color: rgba(234,250,255,0.65); line-height: 1.5; }
@media (max-width: 720px) { .portal-head { flex-direction: column; } .portal-head nav { justify-content: flex-start; } }