:root{
  --bg:#0f172a; --bg2:#111f3a; --panel:#ffffff; --ink:#0f172a; --muted:#64748b;
  --line:#e2e8f0; --brand:#0ea5a4; --brand-d:#0b7f7e; --brand-l:#e6fffb;
  --accent:#2563eb; --danger:#dc2626; --ok:#16a34a; --warn:#d97706;
  --radius:14px; --shadow:0 10px 30px rgba(2,8,23,.08);
}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:#f1f5f9;line-height:1.5}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.btn{display:inline-flex;align-items:center;gap:.5rem;justify-content:center;border:0;border-radius:10px;padding:.7rem 1.1rem;font-size:.95rem;font-weight:600;cursor:pointer;background:var(--brand);color:#fff;transition:.15s}
.btn:hover{background:var(--brand-d)}
.btn.secondary{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn.secondary:hover{background:#f8fafc}
.btn.ghost{background:transparent;color:var(--muted)}
.btn.block{width:100%}
.btn.danger{background:var(--danger)}
.btn:disabled{opacity:.6;cursor:not-allowed}
input,select,textarea{width:100%;padding:.65rem .7rem;border:1px solid var(--line);border-radius:10px;font:inherit;background:#fff;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:2px solid var(--brand-l);border-color:var(--brand)}
label{display:block;font-size:.8rem;font-weight:600;color:var(--muted);margin:.6rem 0 .25rem}
.field{margin-bottom:.4rem}
.card{background:var(--panel);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--line)}
.msg{padding:.7rem .9rem;border-radius:10px;font-size:.9rem;margin:.5rem 0;display:none}
.msg.error{display:block;background:#fef2f2;color:#991b1b;border:1px solid #fecaca}
.msg.ok{display:block;background:#f0fdf4;color:#166534;border:1px solid #bbf7d0}
.brandmark{display:flex;align-items:center;gap:.6rem;font-weight:800;font-size:1.15rem;color:var(--ink)}
.brandmark .dot{width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,var(--brand),var(--accent));display:inline-block}
.muted{color:var(--muted)}
.small{font-size:.82rem}

/* Auth pages */
.auth-wrap{min-height:100vh;display:grid;grid-template-columns:1fr 1fr}
.auth-hero{background:linear-gradient(160deg,#0b1220,#0e2a44 60%,#0b7f7e);color:#e2e8f0;padding:3rem;display:flex;flex-direction:column;justify-content:center;gap:1rem}
.auth-hero h1{font-size:2rem;margin:0}
.auth-hero p{color:#b6c2d4;max-width:34ch}
.auth-hero ul{list-style:none;padding:0;margin:1rem 0;display:grid;gap:.6rem}
.auth-hero li{display:flex;gap:.6rem;align-items:center;color:#cbd5e1}
.auth-hero li::before{content:"✓";color:#34d399;font-weight:800}
.auth-panel{display:flex;align-items:center;justify-content:center;padding:2rem}
.auth-box{width:100%;max-width:400px}
.auth-box h2{margin:.2rem 0 .1rem}
@media(max-width:820px){.auth-wrap{grid-template-columns:1fr}.auth-hero{display:none}}

/* App shell */
.app{display:grid;grid-template-columns:250px 1fr;min-height:100vh}
.sidebar{background:#0f172a;color:#cbd5e1;padding:1.1rem;display:flex;flex-direction:column;gap:.3rem}
.sidebar .brandmark{color:#fff;margin-bottom:1rem}
.nav a{display:flex;align-items:center;gap:.6rem;color:#cbd5e1;padding:.6rem .7rem;border-radius:9px;font-weight:600;font-size:.92rem}
.nav a:hover{background:#1e293b;text-decoration:none}
.nav a.active{background:var(--brand-d);color:#fff}
.sidebar .spacer{flex:1}
.topbar{background:#fff;border-bottom:1px solid var(--line);padding:.8rem 1.4rem;display:flex;align-items:center;justify-content:space-between}
.content{padding:1.6rem;max-width:1100px}
.main{display:flex;flex-direction:column;min-width:0}
.grid{display:grid;gap:1rem}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
.stat{padding:1.1rem}
.stat .n{font-size:1.8rem;font-weight:800}
.stat .l{color:var(--muted);font-size:.85rem}
table{width:100%;border-collapse:collapse;font-size:.9rem}
th,td{text-align:left;padding:.6rem .5rem;border-bottom:1px solid var(--line)}
th{color:var(--muted);font-weight:600;font-size:.78rem;text-transform:uppercase;letter-spacing:.03em}
.badge{display:inline-block;padding:.15rem .55rem;border-radius:999px;font-size:.72rem;font-weight:700}
.badge.gray{background:#f1f5f9;color:#475569}
.badge.teal{background:var(--brand-l);color:var(--brand-d)}
.badge.blue{background:#dbeafe;color:#1d4ed8}
.badge.green{background:#dcfce7;color:#166534}
.badge.amber{background:#fef3c7;color:#92400e}
.section-title{font-size:1.3rem;font-weight:800;margin:0 0 .3rem}
@media(max-width:760px){.app{grid-template-columns:1fr}.sidebar{display:none}.grid.cols-3,.grid.cols-2{grid-template-columns:1fr}}