:root{--bg:#f6f8fa;--card:#ffffff;--muted:#6b7280;--primary:#0ea5e9;--border:#e5e7eb;}
*{box-sizing:border-box} body{margin:0;background:var(--bg);font:14px/1.4 system-ui,Segoe UI,Roboto,Arial}
a{color:#0ea5e9;text-decoration:none}
.topbar{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:2}
.brand{display:flex;gap:12px;align-items:center}
.logo{width:36px;height:36px;border-radius:10px;background:#0ea5e9;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800}
.title h1{margin:0;font-size:16px} .title small{color:var(--muted)}
nav a{margin:0 6px;padding:6px 10px;border-radius:8px} nav a.active, .btn{background:#eef6ff}
.container{max-width:1100px;margin:18px auto;padding:0 12px}
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:12px 0}
.kpi{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:12px;text-align:center}
.kpi-value{font-size:22px;font-weight:800} .kpi-label{color:var(--muted);font-size:12px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:12px;margin-bottom:12px}
.table{width:100%;border-collapse:collapse} .table th,.table td{border-bottom:1px solid var(--border);padding:8px;text-align:left}
.form{display:grid;gap:8px} .grid-form{grid-template-columns:repeat(3,1fr);gap:10px 12px}
input,select,button{padding:8px;border:1px solid var(--border);border-radius:8px}
.btn{cursor:pointer} .primary{background:#0ea5e9;color:#fff;border-color:#0ea5e9}
.list{list-style:none;padding:0;margin:0} .list li{padding:8px 0;border-bottom:1px dashed var(--border)}
.muted{color:var(--muted)} .small{font-size:12px}

.login{display:flex;min-height:100vh;align-items:center;justify-content:center}
.login-card{max-width:380px;width:100%;background:#fff;border:1px solid var(--border);border-radius:12px;padding:16px}
.alert{background:#fee2e2;border:1px solid #fecaca;color:#991b1b;padding:8px;border-radius:8px;margin:8px 0}

.tab{display:none} .tab.active{display:block}
@media (max-width: 900px){ .grid-2{grid-template-columns:1fr} .grid-form{grid-template-columns:1fr} .kpis{grid-template-columns:1fr 1fr} }