:root{
    --bg:#0b1020;
    --panel:#121931;
    --panel-2:#182240;
    --text:#e8edf8;
    --muted:#a9b5d1;
    --line:#253154;
    --primary:#7aa2ff;
    --primary-strong:#5a86f7;
    --danger:#ff8f8f;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:Inter,Segoe UI,Arial,sans-serif;background:linear-gradient(180deg,#0b1020 0%,#0d1326 100%);color:var(--text)}
a{color:var(--text);text-decoration:none}
.shell{width:min(1120px,calc(100% - 32px));margin:0 auto}
.topbar{position:sticky;top:0;z-index:10;background:rgba(11,16,32,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.navwrap{display:flex;justify-content:space-between;align-items:center;min-height:72px;gap:24px}
.brand{font-weight:800;font-size:1.2rem}
.nav{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.nav a,.link-button{opacity:.9}
.nav a:hover,.link-button:hover{opacity:1}
.link-button{background:none;border:none;color:var(--text);font:inherit;cursor:pointer;padding:0}
.button-link{padding:10px 14px;border-radius:10px;background:var(--panel-2)}
.main-shell{padding:40px 0 56px}
.hero{margin-bottom:28px}
.card,.auth-card{background:rgba(18,25,49,.92);border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:0 18px 50px rgba(0,0,0,.25)}
.card h1,.auth-card h1{margin-top:0}
.auth-card{width:min(520px,100%);margin:40px auto}
.narrow{width:min(720px,100%)}
.grid{display:grid;gap:24px}
.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}
@media (max-width:850px){.grid.two{grid-template-columns:1fr}}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 16px;border-radius:12px;font-weight:700}
.btn-primary{background:var(--primary);color:#091126}
.btn-primary:hover{background:var(--primary-strong)}
.btn-secondary{background:transparent;border:1px solid var(--line)}
.auth-form{display:grid;gap:10px}
.auth-form label{font-size:.92rem;color:var(--muted)}
.auth-form input{width:100%;padding:12px 14px;border-radius:12px;border:1px solid var(--line);background:#0b1328;color:var(--text)}
.auth-form span{font-size:.86rem;color:var(--danger);min-height:18px}
.alert{background:rgba(255,143,143,.12);color:#ffd0d0;border:1px solid rgba(255,143,143,.35);padding:12px 14px;border-radius:12px;margin-bottom:14px}
.muted{color:var(--muted)}
.feature-list{margin:0;padding-left:18px}
.feature-list li{margin:10px 0}
.kv{display:grid;grid-template-columns:160px 1fr;gap:10px 16px}
.kv dt{color:var(--muted)}
.footer{border-top:1px solid var(--line);padding:18px 0;color:var(--muted)}
.logout-form{display:inline}