:root{
  --bg:#f4f7fb;
  --card:#ffffff;
  --text:#172033;
  --muted:#708099;
  --line:#e5ebf3;
  --primary:#3b82f6;
  --dark:#111827;
  --success:#14b86a;
  --danger:#dc3545;
  --shadow:0 16px 40px rgba(16,24,40,.08);
  --radius:18px;
}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,Segoe UI,Arial,sans-serif;background:var(--bg);color:var(--text)}
a{text-decoration:none;color:var(--primary)}
.app-shell{display:flex;min-height:100vh}
.sidebar{width:270px;background:linear-gradient(180deg,#0f172a,#111827);color:#fff;padding:24px;position:sticky;top:0;height:100vh}
.brand{display:flex;gap:14px;align-items:center;margin-bottom:26px}
.brand-logo{width:50px;height:50px;border-radius:14px;background:linear-gradient(135deg,#60a5fa,#2563eb);display:grid;place-items:center;font-weight:700}
.brand h2{margin:0;font-size:22px}
.brand p{margin:4px 0 0;color:#a7b3c7;font-size:13px}
.menu{display:flex;flex-direction:column;gap:8px}
.menu a{padding:12px 14px;border-radius:12px;color:#d9e2f1;font-weight:500}
.menu a:hover{background:rgba(255,255,255,.08);color:#fff}
.main-content{flex:1;padding:28px}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}
.topbar h1{margin:0;font-size:30px}
.subtle{color:var(--muted);margin:6px 0 0}
.topbar-user{display:flex;align-items:center;gap:12px}
.badge{background:#e8f1ff;color:#2456b8;padding:8px 12px;border-radius:999px;font-size:12px;font-weight:700;text-transform:uppercase}
.avatar{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:var(--dark);color:#fff;font-weight:700}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:22px}
.stack-cards{grid-template-columns:repeat(2,1fr)}
.card{background:var(--card);padding:22px;border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--line)}
.stat-card h3{margin:0 0 16px;font-size:15px;color:var(--muted)}
.stat{font-size:34px;font-weight:800}
.grid-2{display:grid;grid-template-columns:1.4fr 1fr;gap:18px}
.card-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.table-wrap{overflow:auto}
table{width:100%;border-collapse:collapse}
th,td{padding:12px 10px;border-bottom:1px solid var(--line);text-align:left;font-size:14px}
th{color:#5c6b83;font-weight:700;background:#fafcff}
.form-grid{display:grid;gap:16px}
label{display:grid;gap:8px;font-weight:600;color:#314159}
input[type="text"],input[type="email"],input[type="password"],input[type="file"]{
  width:100%;padding:14px 14px;border-radius:12px;border:1px solid #d6e0ee;background:#fff;outline:none
}
.toolbar{display:flex;gap:12px;align-items:center;margin-bottom:16px}
.toolbar input{max-width:340px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 16px;border-radius:12px;border:none;cursor:pointer;font-weight:700}
.btn-primary{background:var(--primary);color:#fff}
.btn-light{background:#eef4ff;color:#2456b8}
.alert{padding:14px 16px;border-radius:12px;margin-bottom:16px;font-weight:600}
.alert-danger{background:#fff1f2;color:#a61b29;border:1px solid #ffd5dc}
.alert-success{background:#edfdf4;color:#067647;border:1px solid #c7f0d6}
.timeline{display:grid;gap:14px}
.timeline-item{padding:14px;border-radius:14px;background:#f8fbff;border:1px solid #e4eefb}
.list-item{padding:10px 0;border-bottom:1px dashed var(--line)}
.mt-16{margin-top:16px}
.settings-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}

.login-body{
  min-height:100vh;display:grid;place-items:center;
  background:radial-gradient(circle at top left,#dbeafe 0,#eff6ff 30%,#f8fafc 100%);
}
.login-card{
  width:min(1060px,92vw);background:#fff;border-radius:28px;overflow:hidden;display:grid;
  grid-template-columns:1.1fr .9fr;box-shadow:0 30px 90px rgba(15,23,42,.16)
}
.login-left{
  padding:52px;background:linear-gradient(160deg,#0f172a,#1d4ed8);color:#fff
}
.login-left h1{font-size:40px;margin:0 0 18px}
.login-left p{font-size:16px;line-height:1.7;color:#dbe6ff}
.feature-list{padding-left:20px;line-height:2}
.login-right{padding:52px;display:flex;flex-direction:column;justify-content:center}
.login-right h2{margin:0 0 18px;font-size:32px}

@media (max-width: 1100px){
  .cards{grid-template-columns:repeat(2,1fr)}
  .grid-2,.stack-cards{grid-template-columns:1fr}
}
@media (max-width: 860px){
  .app-shell{flex-direction:column}
  .sidebar{width:100%;height:auto;position:relative}
  .toolbar{flex-wrap:wrap}
  .cards{grid-template-columns:1fr}
  .login-card{grid-template-columns:1fr}
}