* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: -apple-system, Segoe UI, Arial, sans-serif;
    background: #f4f5f7;
    color: #1c1e21;
}
.topbar {
    background: #7a1f1f;
    color: #fff;
    padding: 10px 20px;
    font-size: 14px;
}
.layout {
    display: flex;
    min-height: calc(100vh - 40px);
}
.sidenav {
    width: 190px;
    background: #1c1e21;
    padding: 20px 0;
    flex-shrink: 0;
}
.sidenav a {
    display: block;
    padding: 10px 20px;
    color: #c7c9cc;
    text-decoration: none;
    font-size: 14px;
}
.sidenav a:hover { background: #2a2d31; color: #fff; }
.sidenav a.active { background: #3b82f6; color: #fff; font-weight: 600; }
.content {
    flex: 1;
    padding: 30px 40px;
    max-width: 900px;
}
h1 { margin-top: 0; font-size: 22px; }
h2 { font-size: 16px; margin-top: 30px; }
.flash { padding: 10px 14px; border-radius: 4px; margin-bottom: 16px; font-size: 14px; }
.flash-info { background: #e0f2fe; color: #075985; }
.flash-success { background: #dcfce7; color: #166534; }
.flash-error { background: #fee2e2; color: #991b1b; }
form { background: #fff; border: 1px solid #e2e4e8; border-radius: 6px; padding: 20px; margin-bottom: 20px; }
label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 4px; margin-top: 12px; }
input[type=text], input[type=number], select {
    width: 100%; padding: 8px 10px; border: 1px solid #cbd0d6; border-radius: 4px; font-size: 14px;
}
button {
    margin-top: 16px; background: #3b82f6; color: #fff; border: none; padding: 9px 18px;
    border-radius: 4px; font-size: 14px; cursor: pointer;
}
button:hover { background: #2563eb; }
button.secondary { background: #6b7280; }
button.secondary:hover { background: #4b5563; }
table { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid #e2e4e8; border-radius: 6px; overflow: hidden; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid #eef0f2; font-size: 13px; vertical-align: top; }
th { background: #f9fafb; }
.badge { padding: 2px 8px; border-radius: 10px; font-size: 12px; font-weight: 600; }
.badge-ok { background: #dcfce7; color: #166534; }
.badge-fail { background: #fee2e2; color: #991b1b; }
.badge-pending { background: #fef9c3; color: #854d0e; }
.json-block { background: #0f172a; color: #cbd5e1; padding: 10px; border-radius: 4px; font-size: 12px; overflow-x: auto; max-height: 260px; }
.stub-banner { background: #fef3c7; border: 1px solid #f59e0b; color: #78350f; padding: 14px 18px; border-radius: 6px; font-size: 14px; margin-bottom: 20px; }
.hint { color: #6b7280; font-size: 12px; margin-top: 4px; }
.card { background: #fff; border: 1px solid #e2e4e8; border-radius: 6px; padding: 16px; margin-bottom: 16px; }