:root{
  --navy:#0f2740; --navy2:#153452; --accent:#2563eb; --accent-light:#eaf1fe;
  --gray-50:#f7f8fa; --gray-100:#eef0f3; --gray-200:#e2e5ea; --gray-400:#9aa3b2;
  --gray-600:#5b6472; --gray-800:#232a35; --green:#16a34a; --red:#dc2626; --amber:#d97706; --blue:#2563eb;
  --radius:8px; --shadow:0 1px 3px rgba(15,39,64,.08);
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:var(--gray-50);color:var(--gray-800);font-size:14px}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}

.app{display:flex;min-height:100vh}
.sidebar{width:230px;background:var(--navy);color:#cfe0f5;flex-shrink:0;position:fixed;top:0;bottom:0;overflow-y:auto}
.sidebar .brand{padding:18px 16px;font-weight:700;font-size:15px;color:#fff;border-bottom:1px solid rgba(255,255,255,.08)}
.sidebar .brand small{display:block;font-weight:400;font-size:11px;color:#9db6d6;margin-top:2px}
.sidebar nav{padding:8px 0}
.sidebar .grp{font-size:10.5px;text-transform:uppercase;letter-spacing:.06em;color:#7d97b8;padding:14px 16px 4px}
.sidebar a{display:block;padding:7px 16px;color:#cfe0f5;font-size:13px;border-left:3px solid transparent}
.sidebar a:hover{background:var(--navy2);text-decoration:none}
.sidebar a.active{background:var(--navy2);border-left-color:var(--accent);color:#fff;font-weight:600}

.main{margin-left:230px;flex:1;min-width:0}
.topbar{background:#fff;border-bottom:1px solid var(--gray-200);padding:12px 24px;display:flex;justify-content:space-between;align-items:center}
.topbar .title{font-size:16px;font-weight:700}
.topbar .crumbs{font-size:12px;color:var(--gray-600)}
.topbar .user{font-size:13px;color:var(--gray-600)}
.content{padding:22px 24px 60px}

.card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;margin-bottom:18px}
.card h3{margin:0 0 12px;font-size:14px;text-transform:uppercase;letter-spacing:.03em;color:var(--gray-600)}

.kpi-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;margin-bottom:18px}
.kpi{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius);padding:14px 16px;box-shadow:var(--shadow)}
.kpi .val{font-size:22px;font-weight:700;color:var(--navy)}
.kpi .lbl{font-size:12px;color:var(--gray-600);margin-top:2px}
.kpi.warn .val{color:var(--red)}

table{width:100%;border-collapse:collapse;font-size:13px}
th{text-align:left;background:var(--gray-100);padding:8px 10px;font-weight:600;color:var(--gray-600);font-size:11.5px;text-transform:uppercase;letter-spacing:.03em;border-bottom:1px solid var(--gray-200)}
td{padding:8px 10px;border-bottom:1px solid var(--gray-100)}
tr:hover td{background:var(--gray-50)}

.badge{display:inline-block;padding:2px 9px;border-radius:20px;font-size:11px;font-weight:600}
.badge-green{background:#dcfce7;color:#15803d}
.badge-red{background:#fee2e2;color:#b91c1c}
.badge-amber{background:#fef3c7;color:#b45309}
.badge-blue{background:#dbeafe;color:#1d4ed8}
.badge-gray{background:#eef0f3;color:#5b6472}

.btn{display:inline-block;background:var(--accent);color:#fff;border:none;padding:8px 14px;border-radius:6px;font-size:13px;cursor:pointer;font-weight:600}
.btn:hover{background:#1d4ed8;text-decoration:none;color:#fff}
.btn.secondary{background:#fff;color:var(--gray-800);border:1px solid var(--gray-200)}
.btn.secondary:hover{background:var(--gray-100)}
.btn.small{padding:4px 10px;font-size:12px}
.btn.danger{background:var(--red)}

form.inline{display:inline}
label{display:block;font-size:12px;font-weight:600;color:var(--gray-600);margin-bottom:4px}
input,select,textarea{width:100%;padding:7px 9px;border:1px solid var(--gray-200);border-radius:6px;font-size:13px;font-family:inherit;background:#fff}
input:focus,select:focus,textarea:focus{outline:2px solid var(--accent-light);border-color:var(--accent)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.grid3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}
.grid4{display:grid;grid-template-columns:1fr 1fr 1fr 1fr;gap:12px}
.field{margin-bottom:12px}

.tabs{display:flex;gap:2px;border-bottom:1px solid var(--gray-200);margin-bottom:16px;flex-wrap:wrap}
.tabs a{padding:9px 14px;font-size:13px;color:var(--gray-600);border-bottom:2px solid transparent;font-weight:600}
.tabs a.active{color:var(--accent);border-bottom-color:var(--accent)}

.flash{padding:10px 14px;border-radius:6px;margin-bottom:16px;font-size:13px}
.flash.ok{background:#dcfce7;color:#15803d}
.flash.err{background:#fee2e2;color:#b91c1c}

.explain{background:var(--accent-light);border:1px solid #c7dcfb;border-radius:8px;padding:14px 16px;margin-bottom:18px;font-size:13px;color:#1e3a5f}
.explain b{color:var(--navy)}

.whathappened{border:1px dashed #9aa3b2;border-radius:8px;padding:14px 16px;margin-top:20px;background:#fbfcfe}
.whathappened h4{margin:0 0 10px;font-size:13px;color:var(--navy)}
.whathappened .row{display:grid;grid-template-columns:110px 1fr;gap:8px;font-size:12.5px;padding:4px 0;border-top:1px solid var(--gray-100)}
.whathappened .row:first-of-type{border-top:none}
.whathappened .row b{color:var(--gray-600)}

.breadcrumb{font-size:12px;color:var(--gray-600);margin-bottom:10px}
.breadcrumb a{color:var(--gray-600)}
.pill-nav{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.pill-nav a{padding:5px 12px;border:1px solid var(--gray-200);border-radius:20px;font-size:12px;color:var(--gray-800);background:#fff}
.pill-nav a.active{background:var(--navy);color:#fff;border-color:var(--navy)}
.muted{color:var(--gray-600)}
.right{text-align:right}
code{background:var(--gray-100);padding:1px 5px;border-radius:4px;font-size:12px}
.section-title{font-size:13px;font-weight:700;color:var(--navy);margin:22px 0 8px;text-transform:uppercase;letter-spacing:.03em}
.timeline{border-left:2px solid var(--gray-200);margin-left:8px}
.timeline .ev{position:relative;padding:0 0 18px 20px}
.timeline .ev::before{content:'';position:absolute;left:-6px;top:2px;width:10px;height:10px;border-radius:50%;background:var(--accent)}
.timeline .ev .t{font-size:11px;color:var(--gray-600)}
.timeline .ev .d{font-size:13px;font-weight:600}
.sql-box textarea{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;min-height:120px}
.login-wrap{max-width:360px;margin:80px auto;background:#fff;border:1px solid var(--gray-200);border-radius:12px;padding:30px;box-shadow:var(--shadow)}
.stat-row{display:flex;justify-content:space-between;padding:5px 0;font-size:13px;border-bottom:1px solid var(--gray-100)}