:root {
    --bg: #f5f6f8; --surface: #ffffff; --text: #1d2330; --muted: #6b7280; --border: #e3e6eb;
    --primary: #2563eb; --primary-text: #ffffff; --danger: #dc2626;
    --ok: #15803d; --ok-bg: #dcfce7; --warn: #b45309; --warn-bg: #fef3c7; --off-bg: #eef0f3; --err-bg: #fee2e2;
}
@media (prefers-color-scheme: dark) {
    :root {
        --bg: #11151c; --surface: #1a202b; --text: #e6e9ef; --muted: #9aa3b2; --border: #2a3240;
        --primary: #3b82f6; --ok: #4ade80; --ok-bg: #14321f; --warn: #fbbf24; --warn-bg: #3a2c0c;
        --off-bg: #232a36; --err-bg: #3b1515;
    }
}
* { box-sizing: border-box; }
body { margin: 0; font: 14px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; background: var(--bg); color: var(--text); }
a { color: var(--primary); text-decoration: none; }
h1 { font-size: 1.4rem; margin: 0 0 16px; }
h2 { font-size: 1.1rem; margin: 28px 0 8px; }
code, .mono { font-family: ui-monospace, Consolas, monospace; font-size: .92em; }

.topbar { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between;
    padding: 10px 16px; background: var(--surface); border-bottom: 1px solid var(--border); }
.topbar .brand { font-weight: 700; color: var(--text); }
.topbar nav { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.container { max-width: 1280px; margin: 0 auto; padding: 20px 16px 48px; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 20px; }
.form { display: grid; gap: 14px; max-width: 640px; }
.form label { display: grid; gap: 4px; font-weight: 600; }
.form small, .sub { color: var(--muted); font-weight: 400; font-size: .88em; }
.row { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; }
input, select { font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--border);
    border-radius: 6px; padding: 8px 10px; width: 100%; }
input[readonly] { opacity: .7; }
.form-actions { display: flex; gap: 8px; }

.btn { display: inline-block; font: inherit; cursor: pointer; border: 1px solid var(--border); background: var(--surface);
    color: var(--text); border-radius: 6px; padding: 7px 14px; }
.btn:hover { border-color: var(--primary); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: var(--primary-text); }
.btn-danger { color: var(--danger); }
.btn-sm { padding: 3px 9px; font-size: .88em; }
button.link { background: none; border: 0; color: var(--primary); cursor: pointer; font: inherit; padding: 0; }
form.inline { display: inline; }
form.inline input[type=password] { width: 150px; padding: 3px 8px; }

.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 14px; }
.flash-ok { background: var(--ok-bg); color: var(--ok); }
.flash-error { background: var(--err-bg); color: var(--danger); }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 18px; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px; display: grid; }
.stat-value { font-size: 1.6rem; font-weight: 700; }
.stat-label { color: var(--muted); font-size: .88em; }
.ok { color: var(--ok); } .warn { color: var(--warn); } .muted { color: var(--muted); }

.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { font-size: .82em; color: var(--muted); text-transform: uppercase; letter-spacing: .03em; white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
td.empty { text-align: center; color: var(--muted); padding: 28px; }
.nowrap { white-space: nowrap; }
.actions { white-space: nowrap; display: flex; gap: 4px; }

.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: .82em; font-weight: 600; white-space: nowrap; }
.badge-online { background: var(--ok-bg); color: var(--ok); }
.badge-offline, .badge-unknown { background: var(--off-bg); color: var(--muted); }
.badge-disabled, .badge-missing { background: var(--err-bg); color: var(--danger); }
.badge-expired { background: var(--warn-bg); color: var(--warn); }

.show { display: grid; grid-template-columns: auto 1fr; gap: 24px; align-items: start; }
/* Quiet zone putih lebar (>= 4 modul) agar scanner tetap mengenali QR di tema gelap */
#qr { background: #fff; padding: 36px; border-radius: 4px; width: max-content; color-scheme: light; }
#qr img, #qr canvas { display: block; }
pre.conf { background: var(--bg); border: 1px solid var(--border); border-radius: 6px; padding: 12px; overflow-x: auto; }
.pager { display: flex; gap: 8px; margin-top: 12px; }

.login-page { display: grid; place-items: center; min-height: 100vh; padding: 16px; }
.login-card { width: 100%; max-width: 360px; display: grid; gap: 14px; }
.login-card label { display: grid; gap: 4px; font-weight: 600; }
.login-card h1 { text-align: center; }

@media (max-width: 700px) {
    .show { grid-template-columns: 1fr; }
    #qr { margin: 0 auto; }
}