:root{
  --bg:#f7f8fb; --surface:#fff; --text:#0f172a; --muted:#64748b;
  --line:rgba(15,23,42,.10); --shadow:0 10px 28px rgba(2,6,23,.08);
  --teal:#00FFEF; --radius:18px; --side:260px;
}
*{box-sizing:border-box} html,body{height:100%}
body{margin:0;font-family:'Poppins',system-ui;color:var(--text);
  background:radial-gradient(900px 600px at 18% -10%, rgba(0,255,239,.16), transparent 55%), var(--bg)}
a{text-decoration:none;color:inherit}
.layout{display:grid;grid-template-columns:var(--side) 1fr;min-height:100vh}
.sidebar{position:sticky;top:0;height:100vh;padding:16px;border-right:1px solid rgba(15,23,42,.08);
  background:rgba(255,255,255,.92);backdrop-filter:blur(12px)}
.brand{display:flex;gap:10px;align-items:center;padding:12px;border:1px solid rgba(15,23,42,.08);border-radius:18px;box-shadow:var(--shadow)}
.brand img{height:30px}
.brand b{display:block;font-weight:900;font-size:12px}
.brand small{color:var(--muted);font-size:11px}
.nav{display:flex;flex-direction:column;gap:8px;margin-top:14px}
.nav a{padding:10px 12px;border-radius:14px;border:1px solid transparent;font-weight:800;font-size:12px;color:rgba(15,23,42,.78)}
.nav a.active{border-color:rgba(0,255,239,.42);background:rgba(0,255,239,.10)}
.nav a:hover{border-color:rgba(15,23,42,.10);background:rgba(15,23,42,.02)}
.foot{position:absolute;left:16px;right:16px;bottom:16px;color:var(--muted);font-size:11px}
.main{padding:18px}
.top{display:flex;gap:10px;align-items:center;padding:12px 14px;border:1px solid rgba(15,23,42,.08);
  border-radius:18px;background:rgba(255,255,255,.92);box-shadow:var(--shadow);position:sticky;top:12px}
.title{font-weight:900}
.spacer{flex:1}
.btn{height:36px;padding:0 12px;border-radius:999px;border:1px solid rgba(15,23,42,.12);background:#fff;font-weight:900;font-size:12px}
.card{margin-top:16px;border:1px solid rgba(15,23,42,.08);border-radius:20px;background:rgba(255,255,255,.92);box-shadow:var(--shadow);padding:16px}
.card h2{margin:0 0 10px;font-size:14px;font-weight:900}
.muted{color:var(--muted)}

/* Auth */
.authWrap{min-height:100vh;display:grid;place-items:center;padding:28px}
.authCard{width:min(520px,100%);border:1px solid rgba(15,23,42,.08);border-radius:24px;background:rgba(255,255,255,.92);
  box-shadow:var(--shadow);padding:18px 18px 16px;backdrop-filter:blur(12px)}
.authTop{display:flex;gap:14px;align-items:center;margin-bottom:10px}
.authTop img{height:44px;width:auto}
.authTop h1{margin:0;font-size:22px;font-weight:900;letter-spacing:-.02em}
.authTop p{margin:4px 0 0;color:var(--muted);font-size:12px}
.field{margin-top:12px}
.field label{display:block;font-size:12px;font-weight:800;margin-bottom:6px;color:rgba(15,23,42,.80)}
.input{width:100%;height:44px;border-radius:14px;border:1px solid rgba(15,23,42,.12);background:#fff;padding:0 12px;
  font-size:14px;outline:none}
.input:focus{border-color:rgba(0,255,239,.55);box-shadow:0 0 0 4px rgba(0,255,239,.14)}
.row{display:flex;gap:10px;align-items:center;margin-top:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;cursor:pointer}
.btnPrimary{border-color:rgba(0,255,239,.60);background:linear-gradient(135deg, rgba(0,255,239,.18), rgba(0,255,239,.06));
  box-shadow:0 8px 22px rgba(0,255,239,.14)}
.btnPrimary:hover{box-shadow:0 10px 26px rgba(0,255,239,.18)}
.btnDark{border-color:rgba(15,23,42,.18);background:rgba(15,23,42,.06)}
.hr{height:1px;background:rgba(15,23,42,.10);margin:16px 0}
.authCard small{color:var(--muted)}
#msg{display:block;color:rgba(15,23,42,.85)}
@media(max-width:920px){.layout{grid-template-columns:1fr}.sidebar{position:relative;height:auto}.foot{position:relative;left:auto;right:auto;bottom:auto;margin-top:14px}}


.nav a{display:flex;align-items:center;gap:10px}
.ico{width:18px;height:18px;opacity:.9;fill:currentColor}
.navsep{height:1px;background:rgba(15,23,42,.08);margin:10px 6px}