:root {
  --bg: #f4f5f7; --surface: #ffffff; --border: #e2e5ea; --text: #2b2f36; --muted: #6b7280;
  --accent: #1f5fae; --accent-hover: #184c8c; --danger: #b42318; --ok: #1e7b45; --warn: #a15c07;
  --row-alt: #fafbfc; --side: #1e2733; --side-text: #c9d1dc;
}
* { box-sizing: border-box; }
body { margin: 0; font: 14px/1.45 Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif; color: var(--text); background: var(--bg); }
.hidden { display: none !important; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.err { color: var(--danger); min-height: 18px; margin: 8px 0 0; }
code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12.5px; }
pre { background: #f6f8fa; border: 1px solid var(--border); border-radius: 6px; padding: 12px; overflow-x: auto; }

.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-box { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 28px; width: 100%; max-width: 360px; }
.login-box h1 { margin: 0 0 4px; font-size: 20px; }
.login-box input { width: 100%; margin: 14px 0 12px; }

input, select { font: inherit; padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; background: #fff; color: var(--text); }
input:focus, select:focus { outline: 2px solid rgba(31,95,174,.25); border-color: var(--accent); }
label { display: block; font-weight: 500; margin: 12px 0 4px; }
.field-help { font-size: 12px; color: var(--muted); margin-top: 4px; }

.btn { font: inherit; font-weight: 500; padding: 7px 12px; border-radius: 6px; border: 1px solid var(--border); background: #fff; color: var(--text); cursor: pointer; }
.btn:hover { background: #f1f3f6; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-hover); }
.btn.danger { color: var(--danger); }
.btn.link { border: none; background: none; color: var(--accent); padding: 4px 0; }
.btn.sm { padding: 4px 8px; font-size: 12.5px; }
.btn:disabled { opacity: .5; cursor: default; }

.layout { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }
.sidebar { background: var(--side); color: var(--side-text); display: flex; flex-direction: column; padding: 18px 0; }
.brand { font-weight: 600; font-size: 16px; color: #fff; padding: 0 20px 18px; }
.brand span { color: #8fb4e6; font-weight: 500; }
.sidebar nav a { display: block; padding: 9px 20px; color: var(--side-text); text-decoration: none; border-left: 3px solid transparent; }
.sidebar nav a:hover { background: rgba(255,255,255,.04); }
.sidebar nav a.active { color: #fff; border-left-color: #8fb4e6; background: rgba(255,255,255,.06); }
.side-foot { margin-top: auto; padding: 0 20px; }
.side-foot .btn.link { color: #8fb4e6; }

.content { padding: 24px 28px; min-width: 0; }
.page-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.page-head h2 { margin: 0; font-size: 20px; }
.page-head p { margin: 2px 0 0; }
.actions { display: flex; gap: 8px; }

.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 16px; }
.kpi { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 12px 14px; }
.kpi .v { font-size: 22px; font-weight: 600; }
.kpi .l { color: var(--muted); font-size: 12px; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; overflow-x: auto; }
.card.pad { padding: 4px 20px 16px; }
.card h3 { font-size: 15px; margin: 16px 0 8px; }
.list { margin: 0; padding-left: 18px; }
.list li { margin: 4px 0; }

.table { width: 100%; border-collapse: collapse; }
.table th { text-align: left; font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); padding: 10px 14px; border-bottom: 1px solid var(--border); white-space: nowrap; }
.table td { padding: 10px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.table tbody tr:nth-child(even) { background: var(--row-alt); }
.table tbody tr:last-child td { border-bottom: none; }
.table.compact td { padding: 6px 14px; font-size: 13px; }
.right { text-align: right; }
.row-actions { display: flex; gap: 6px; justify-content: flex-end; flex-wrap: wrap; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 12px; font-weight: 500; border: 1px solid; white-space: nowrap; }
.badge.WORKING { color: var(--ok); border-color: #b7dfc6; background: #eef8f1; }
.badge.SCAN_QR_CODE, .badge.STARTING, .badge.PASSKEY_REQUIRED, .badge.PASSKEY_CONFIRMATION_REQUIRED { color: var(--warn); border-color: #f0d3a6; background: #fdf6ea; }
.badge.FAILED { color: var(--danger); border-color: #f3c3be; background: #fdf0ef; }
.badge.STOPPED { color: var(--muted); border-color: var(--border); background: #f6f7f9; }

.modal { position: fixed; inset: 0; background: rgba(20,26,34,.45); display: grid; place-items: center; padding: 16px; z-index: 10; }
.modal-box { background: var(--surface); border-radius: 8px; width: 100%; max-width: 520px; max-height: 92vh; overflow: auto; padding: 18px 20px 20px; }
.modal-box header { display: flex; justify-content: space-between; align-items: center; }
.modal-box h3 { margin: 0; font-size: 17px; }
.modal-box input, .modal-box select { width: 100%; }
.checks { display: grid; grid-template-columns: repeat(2, 1fr); gap: 4px 12px; }
.checks label { font-weight: 400; margin: 0; display: flex; gap: 6px; align-items: center; }
.checks input { width: auto; }
.qr-wrap { text-align: center; padding: 8px 0; }
.qr-wrap img { width: 280px; height: 280px; max-width: 100%; border: 1px solid var(--border); border-radius: 6px; }
.pair-code { font-size: 28px; font-weight: 600; letter-spacing: .12em; text-align: center; margin: 12px 0; }
.form-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 18px; }
.inline { display: flex; gap: 8px; }
.inline input { flex: 1; }

@media (max-width: 760px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { flex-direction: row; align-items: center; padding: 10px 16px; gap: 12px; flex-wrap: wrap; }
  .brand { padding: 0; }
  .sidebar nav { display: flex; }
  .sidebar nav a { padding: 6px 10px; border-left: none; border-bottom: 2px solid transparent; }
  .sidebar nav a.active { border-bottom-color: #8fb4e6; }
  .side-foot { margin: 0 0 0 auto; padding: 0; display: flex; gap: 10px; align-items: center; }
  .content { padding: 16px; }
  .checks { grid-template-columns: 1fr; }
}