/* WF501B Monitor — light admin theme (sidebar + top bar + cards), inspired by the Cloud Platform layout the team already uses */
:root {
  --bg: #f0f2f5; --card: #ffffff; --border: #ebedf0; --line: #f0f0f0; --text: rgba(0, 0, 0, .88); --text-2: rgba(0, 0, 0, .65); --muted: rgba(0, 0, 0, .45);
  --primary: #1677ff; --primary-h: #4096ff; --primary-bg: #e6f4ff; --primary-bd: #91caff;
  --success: #52c41a; --success-bg: #f6ffed; --warning: #faad14; --warning-bg: #fffbe6; --danger: #f5222d; --danger-bg: #fff1f0; --info: #13c2c2;
  --st-online: #16a34a; --st-pre: #f59e0b; --st-alarm: #dc2626; --st-offline: #6b7280; --st-never: #3b82f6; --st-disabled: #9ca3af; --st-pending: #8b5cf6;
  --series-t: #2a78d6; --series-rh: #1baf7a; --series-limit: #d03b3b; --grid: #e1e0d9; --axis: #c3c2b7;
  --radius: 8px; --shadow: 0 1px 2px rgba(0, 0, 0, .04), 0 2px 8px rgba(0, 0, 0, .04); --sidebar-w: 224px; --top-h: 60px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { font: 14px/1.5 var(--font); color: var(--text); background: var(--bg); min-height: 100vh; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-h); }
h1, h2, h3, h4 { margin: 0; font-weight: 600; }
p { margin: 0 0 8px; }
code, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12.5px; }
.num { font-variant-numeric: tabular-nums; }
svg { display: block; }
button, input, select, textarea { font: inherit; color: inherit; }
::placeholder { color: var(--muted); }

/* ---------- layout ---------- */
.app { display: flex; min-height: 100vh; }
.sidebar { width: var(--sidebar-w); background: #fff; border-right: 1px solid var(--border); position: fixed; top: 0; bottom: 0; left: 0; display: flex; flex-direction: column; z-index: 20; overflow-y: auto; }
.brand { height: var(--top-h); display: flex; align-items: center; gap: 10px; padding: 0 16px; border-bottom: 1px solid var(--border); }
.brand .logo { width: 36px; height: 36px; border-radius: 8px; background: linear-gradient(135deg, #1677ff, #13c2c2); display: grid; place-items: center; color: #fff; flex: none; }
.brand .title { font-size: 17px; font-weight: 700; line-height: 1.15; color: var(--text); }
.brand .sub { font-size: 11px; color: var(--muted); font-weight: 500; }
.nav { padding: 8px 8px 16px; flex: 1; }
.nav .sec { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; padding: 14px 12px 4px; }
.nav a { display: flex; align-items: center; gap: 10px; padding: 9px 12px; margin: 2px 0; border-radius: 6px; color: var(--text-2); font-weight: 500; position: relative; }
.nav a svg { width: 18px; height: 18px; flex: none; stroke: currentColor; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.nav a:hover { background: #f5f7fa; color: var(--text); }
.nav a.active { background: var(--primary-bg); color: var(--primary); }
.nav a.active::before { content: ""; position: absolute; left: -8px; top: 8px; bottom: 8px; width: 3px; background: var(--primary); border-radius: 0 3px 3px 0; }
.nav .badge-n { margin-left: auto; background: var(--danger); color: #fff; font-size: 11px; font-weight: 600; border-radius: 10px; padding: 0 6px; min-width: 18px; text-align: center; line-height: 18px; }
.nav .badge-n.purple { background: var(--st-pending); }
.main { flex: 1; margin-left: var(--sidebar-w); display: flex; flex-direction: column; min-width: 0; }
.topbar { height: var(--top-h); background: #fff; border-bottom: 1px solid var(--border); display: flex; align-items: center; padding: 0 20px; gap: 14px; position: sticky; top: 0; z-index: 10; }
.topbar .notice { display: flex; align-items: center; gap: 8px; color: var(--text-2); flex: 1; min-width: 0; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.topbar .notice svg { width: 18px; height: 18px; flex: none; }
.topbar .icon-btn { width: 36px; height: 36px; border-radius: 8px; border: 0; background: transparent; display: grid; place-items: center; cursor: pointer; color: var(--text-2); position: relative; }
.topbar .icon-btn:hover { background: #f5f7fa; color: var(--text); }
.topbar .icon-btn svg { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.topbar .icon-btn .dot { position: absolute; top: 4px; right: 4px; background: var(--danger); color: #fff; font-size: 10px; line-height: 16px; min-width: 16px; padding: 0 4px; border-radius: 8px; font-weight: 700; }
.topbar .icon-btn .dot.purple { background: var(--st-pending); }
.topbar .clock { color: var(--text-2); font-variant-numeric: tabular-nums; font-size: 13px; }
.topbar .lang { border: 1px solid var(--border); border-radius: 6px; padding: 4px 8px; background: #fff; cursor: pointer; }
.topbar .user { display: flex; align-items: center; gap: 10px; padding-left: 14px; border-left: 1px solid var(--border); height: 100%; cursor: pointer; }
.topbar .avatar { width: 36px; height: 36px; border-radius: 50%; background: var(--primary); color: #fff; display: grid; place-items: center; font-weight: 700; }
.topbar .user .uname { font-weight: 600; line-height: 1.2; }
.topbar .user .urole { font-size: 12px; color: var(--muted); line-height: 1.2; }
.content { padding: 20px 24px 28px; flex: 1; }
.footer { text-align: center; color: var(--muted); font-size: 12.5px; padding: 14px; border-top: 1px solid var(--border); background: #fafafa; }
.page-head { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; flex-wrap: wrap; }
.page-head h1 { font-size: 20px; font-weight: 500; }
.page-head .crumbs { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; border-left: 1px solid var(--border); padding-left: 14px; }
.page-head .crumbs svg { width: 14px; height: 14px; stroke: currentColor; fill: none; stroke-width: 2; }
.page-head .spacer { flex: 1; }
.page-head .actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

/* ---------- cards ---------- */
.card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--border); }
.card + .card { margin-top: 16px; }
.card-h { display: flex; align-items: center; gap: 12px; padding: 14px 18px; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.card-h h2 { font-size: 15px; font-weight: 600; }
.card-h .spacer { flex: 1; }
.card-b { padding: 16px 18px; }
.card-b.tight { padding: 0; }
.grid { display: grid; gap: 16px; }
.grid.c2 { grid-template-columns: repeat(2, 1fr); }
.grid.c3 { grid-template-columns: repeat(3, 1fr); }
.grid.c4 { grid-template-columns: repeat(4, 1fr); }
.grid.auto { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.mt { margin-top: 16px; } .mb { margin-bottom: 16px; } .mt8 { margin-top: 8px; } .mb8 { margin-bottom: 8px; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.right { text-align: right; } .center { text-align: center; }
.muted { color: var(--muted); } .small { font-size: 12.5px; } .strong { font-weight: 600; }
.hidden { display: none !important; }

/* status tiles (overview) */
.stat-tiles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.tile { background: #fff; border-radius: var(--radius); border: 1px solid var(--border); box-shadow: var(--shadow); padding: 16px 18px; display: flex; align-items: center; gap: 14px; position: relative; overflow: hidden; cursor: pointer; transition: transform .12s, box-shadow .12s; min-height: 92px; }
.tile:hover { transform: translateY(-1px); box-shadow: 0 6px 18px rgba(0, 0, 0, .08); }
.tile::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: var(--tile-c, var(--primary)); }
.tile .t-label { color: var(--text-2); font-size: 13.5px; }
.tile .t-value { font-size: 28px; font-weight: 600; line-height: 1.1; margin-top: 4px; color: var(--tile-c, var(--text)); }
.tile .t-icon { margin-left: auto; width: 52px; height: 52px; border-radius: 12px; display: grid; place-items: center; background: color-mix(in srgb, var(--tile-c, var(--primary)) 12%, #fff); color: var(--tile-c, var(--primary)); flex: none; }
.tile .t-icon svg { width: 28px; height: 28px; stroke: currentColor; fill: none; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.tile.add { border-style: dashed; }
.tile.add .t-value { font-size: 18px; color: var(--text); }

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; height: 34px; padding: 0 14px; border-radius: 6px; border: 1px solid #d9d9d9; background: #fff; cursor: pointer; font-weight: 500; white-space: nowrap; transition: all .12s; color: var(--text); }
.btn:hover { border-color: var(--primary-h); color: var(--primary-h); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-h); border-color: var(--primary-h); color: #fff; }
.btn.success { background: var(--success); border-color: var(--success); color: #fff; }
.btn.success:hover { filter: brightness(1.08); color: #fff; }
.btn.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn.danger:hover { filter: brightness(1.08); color: #fff; }
.btn.ghost-danger { color: var(--danger); border-color: #ffa39e; }
.btn.ghost-danger:hover { background: var(--danger-bg); color: var(--danger); }
.btn.link { border-color: transparent; background: transparent; color: var(--primary); padding: 0 6px; height: auto; }
.btn.sm { height: 28px; padding: 0 10px; font-size: 13px; }
.btn.xs { height: 24px; padding: 0 8px; font-size: 12px; }
.btn.icon { width: 30px; height: 30px; padding: 0; }
.btn.icon.sm { width: 26px; height: 26px; }
.btn-group { display: inline-flex; }
.btn-group .btn { border-radius: 0; margin-left: -1px; }
.btn-group .btn:first-child { border-radius: 6px 0 0 6px; margin-left: 0; }
.btn-group .btn:last-child { border-radius: 0 6px 6px 0; }
.btn-group .btn.on { background: var(--primary-bg); color: var(--primary); border-color: var(--primary-bd); position: relative; z-index: 1; }

/* ---------- forms ---------- */
.field { display: flex; flex-direction: column; gap: 5px; margin-bottom: 12px; }
.field label, .lbl { font-size: 13px; color: var(--text-2); }
.field .hint { font-size: 12px; color: var(--muted); }
.field.error input, .field.error select { border-color: var(--danger); }
.field .err { color: var(--danger); font-size: 12px; }
input[type=text], input[type=password], input[type=number], input[type=email], input[type=date], input[type=datetime-local], input[type=time], input[type=search], select, textarea {
  height: 34px; border: 1px solid #d9d9d9; border-radius: 6px; padding: 0 10px; background: #fff; width: 100%; min-width: 0; outline: none; transition: border-color .12s, box-shadow .12s; }
textarea { height: auto; padding: 8px 10px; min-height: 70px; resize: vertical; }
input:focus, select:focus, textarea:focus { border-color: var(--primary-h); box-shadow: 0 0 0 2px rgba(22, 119, 255, .15); }
input[type=color] { width: 44px; height: 34px; padding: 2px; border: 1px solid #d9d9d9; border-radius: 6px; background: #fff; }
input[type=checkbox], input[type=radio] { width: 16px; height: 16px; accent-color: var(--primary); margin: 0; }
.check { display: flex; align-items: center; gap: 8px; cursor: pointer; font-size: 13.5px; }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 16px; }
.form-grid.c3 { grid-template-columns: repeat(3, 1fr); }
.form-grid.c4 { grid-template-columns: repeat(4, 1fr); }
.form-grid .full { grid-column: 1 / -1; }
.filters { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; }
.filters .field { margin: 0; min-width: 150px; }
.filters .field.grow { flex: 1; min-width: 220px; }
.inline { display: inline-flex; align-items: center; gap: 8px; }
.switch { position: relative; width: 40px; height: 22px; background: #ccc; border-radius: 11px; cursor: pointer; transition: background .15s; flex: none; border: 0; }
.switch::after { content: ""; position: absolute; top: 2px; left: 2px; width: 18px; height: 18px; border-radius: 50%; background: #fff; transition: left .15s; box-shadow: 0 1px 2px rgba(0, 0, 0, .2); }
.switch.on { background: var(--primary); }
.switch.on::after { left: 20px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { display: inline-flex; align-items: center; gap: 6px; padding: 2px 10px; border-radius: 12px; background: #f5f5f5; border: 1px solid var(--border); font-size: 12.5px; cursor: pointer; user-select: none; }
.chip.on { background: var(--primary-bg); border-color: var(--primary-bd); color: var(--primary); }
.multi { border: 1px solid #d9d9d9; border-radius: 6px; max-height: 190px; overflow: auto; padding: 6px 10px; background: #fff; }
.multi label { display: flex; gap: 8px; align-items: center; padding: 3px 0; cursor: pointer; }

/* ---------- tables ---------- */
.table-wrap { overflow-x: auto; }
table.tbl { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.tbl th { text-align: left; font-weight: 600; color: var(--text); background: #fafafa; padding: 11px 12px; border-bottom: 1px solid var(--line); white-space: nowrap; }
.tbl td { padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.tbl tbody tr:hover { background: #fafcff; }
.tbl tr.sel { background: var(--primary-bg); }
.tbl .r { text-align: right; }
.tbl .c { text-align: center; }
.tbl .nowrap { white-space: nowrap; }
.tbl .actions { white-space: nowrap; text-align: right; }
.tbl .actions .btn { margin-left: 4px; }
.tbl a.name { font-weight: 500; }
.empty { text-align: center; color: var(--text-2); padding: 42px 16px; font-weight: 600; }
.empty.small { padding: 18px; font-weight: 500; }
.pager { display: flex; justify-content: flex-end; align-items: center; gap: 6px; padding: 12px 16px; flex-wrap: wrap; }
.pager .info { margin-right: auto; color: var(--muted); font-size: 12.5px; }
.pager button { height: 28px; min-width: 28px; padding: 0 8px; border: 1px solid #d9d9d9; border-radius: 4px; background: #fff; cursor: pointer; }
.pager button.on { border-color: var(--primary); color: var(--primary); }
.pager button:disabled { opacity: .4; cursor: default; }
.tip { border-left: 4px solid var(--primary); background: var(--primary-bg); padding: 10px 14px; border-radius: 4px; color: var(--text-2); font-size: 13px; }
.tip.warn { border-color: var(--warning); background: var(--warning-bg); }
.tip.danger { border-color: var(--danger); background: var(--danger-bg); }
.tip.success { border-color: var(--success); background: var(--success-bg); }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; font-size: 13.5px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; }

/* ---------- badges ---------- */
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 1px 9px; border-radius: 11px; font-size: 12px; font-weight: 600; line-height: 20px; white-space: nowrap; border: 1px solid transparent; }
.badge::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.badge.plain::before { display: none; }
.st-online { color: var(--st-online); background: #ecfdf5; border-color: #a7f3d0; }
.st-pre_alarm { color: #b45309; background: #fffbeb; border-color: #fde68a; }
.st-alarm { color: var(--st-alarm); background: #fef2f2; border-color: #fecaca; }
.st-offline { color: var(--st-offline); background: #f3f4f6; border-color: #d1d5db; }
.st-never_seen { color: #1d4ed8; background: #eff6ff; border-color: #bfdbfe; }
.st-disabled { color: #6b7280; background: #f9fafb; border-color: #e5e7eb; }
.st-pending { color: #6d28d9; background: #f5f3ff; border-color: #ddd6fe; }
.tag { display: inline-block; padding: 0 8px; border-radius: 4px; font-size: 12px; line-height: 20px; background: #f5f5f5; border: 1px solid var(--border); color: var(--text-2); white-space: nowrap; }
.tag.blue { background: var(--primary-bg); border-color: var(--primary-bd); color: var(--primary); }
.tag.green { background: var(--success-bg); border-color: #b7eb8f; color: #389e0d; }
.tag.red { background: var(--danger-bg); border-color: #ffa39e; color: #cf1322; }
.tag.orange { background: var(--warning-bg); border-color: #ffe58f; color: #d48806; }
.tag.purple { background: #f9f0ff; border-color: #d3adf7; color: #531dab; }
.gdot { display: inline-block; width: 10px; height: 10px; border-radius: 3px; vertical-align: -1px; margin-right: 6px; }
.value-t { color: var(--series-t); font-weight: 600; }
.value-rh { color: var(--series-rh); font-weight: 600; }
.bad { color: var(--danger); font-weight: 600; }

/* ---------- device cards (monitor) ---------- */
.dev-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px; }
.dev-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 14px 16px 12px; position: relative; cursor: pointer; transition: box-shadow .12s, transform .12s; border-top: 3px solid var(--st-offline); }
.dev-card:hover { box-shadow: 0 6px 18px rgba(0, 0, 0, .09); transform: translateY(-1px); }
.dev-card.s-online { border-top-color: var(--st-online); } .dev-card.s-pre_alarm { border-top-color: var(--st-pre); } .dev-card.s-alarm { border-top-color: var(--st-alarm); animation: pulse 2s infinite; }
.dev-card.s-never_seen { border-top-color: var(--st-never); } .dev-card.s-disabled { border-top-color: var(--st-disabled); opacity: .75; }
@keyframes pulse { 0%, 100% { box-shadow: var(--shadow); } 50% { box-shadow: 0 0 0 4px rgba(220, 38, 38, .15); } }
.dev-card .dc-head { display: flex; justify-content: space-between; gap: 8px; align-items: flex-start; }
.dev-card .dc-name { font-weight: 600; font-size: 14.5px; line-height: 1.25; }
.dev-card .dc-sub { color: var(--muted); font-size: 12px; margin-top: 2px; }
.dev-card .dc-vals { display: flex; gap: 18px; margin: 12px 0 8px; align-items: flex-end; }
.dev-card .dc-val { font-size: 30px; font-weight: 600; line-height: 1; letter-spacing: -.02em; }
.dev-card .dc-val small { font-size: 14px; font-weight: 500; color: var(--muted); margin-left: 2px; }
.dev-card .dc-val.rh { font-size: 20px; padding-bottom: 3px; }
.dev-card .dc-val.out { color: var(--danger); }
.dev-card .dc-lim { font-size: 11.5px; color: var(--muted); }
.dev-card .dc-foot { display: flex; justify-content: space-between; color: var(--muted); font-size: 12px; margin-top: 6px; align-items: center; }
.dev-card .spark { height: 36px; margin: 4px -4px 0; }
.dev-card .spark svg { width: 100%; height: 36px; }

/* ---------- charts ---------- */
.chart { position: relative; width: 100%; }
.chart svg { width: 100%; height: auto; display: block; }
.chart .tt { position: absolute; pointer-events: none; background: rgba(17, 24, 39, .92); color: #fff; font-size: 12px; padding: 6px 9px; border-radius: 6px; transform: translate(-50%, -100%); white-space: nowrap; display: none; z-index: 5; line-height: 1.4; }
.chart .tt b { font-weight: 600; }
.legend { display: flex; gap: 14px; flex-wrap: wrap; font-size: 12.5px; color: var(--text-2); padding: 6px 0 0; }
.legend i { display: inline-block; width: 14px; height: 3px; border-radius: 2px; vertical-align: middle; margin-right: 6px; }
.legend i.dash { background: repeating-linear-gradient(90deg, var(--series-limit) 0 4px, transparent 4px 7px); }
.bars { display: flex; align-items: flex-end; gap: 6px; height: 90px; padding-top: 4px; }
.bars .bar { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 4px; height: 100%; justify-content: flex-end; font-size: 11px; color: var(--muted); }
.bars .bar i { display: block; width: 100%; max-width: 34px; background: var(--series-t); border-radius: 4px 4px 0 0; min-height: 2px; }
.bars .bar b { font-weight: 600; color: var(--text-2); }

/* ---------- modal / toast ---------- */
.modal-bg { position: fixed; inset: 0; background: rgba(0, 0, 0, .45); display: flex; align-items: flex-start; justify-content: center; padding: 60px 16px 24px; z-index: 100; overflow-y: auto; }
.modal { background: #fff; border-radius: 10px; width: 100%; max-width: 640px; box-shadow: 0 12px 40px rgba(0, 0, 0, .2); animation: pop .15s ease-out; }
.modal.wide { max-width: 900px; }
.modal.narrow { max-width: 440px; }
.modal-h { padding: 16px 20px; border-bottom: 1px solid var(--line); display: flex; align-items: center; gap: 10px; }
.modal-h h3 { font-size: 16px; flex: 1; }
.modal-h .x { border: 0; background: transparent; font-size: 20px; cursor: pointer; color: var(--muted); line-height: 1; padding: 4px; }
.modal-b { padding: 18px 20px 6px; }
.modal-f { padding: 12px 20px 16px; display: flex; justify-content: flex-end; gap: 8px; border-top: 1px solid var(--line); }
@keyframes pop { from { transform: translateY(-8px); opacity: 0; } to { transform: none; opacity: 1; } }
#toasts { position: fixed; top: 16px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; gap: 8px; z-index: 200; pointer-events: none; }
.toast { background: #fff; border-radius: 8px; box-shadow: 0 6px 24px rgba(0, 0, 0, .15); padding: 10px 16px; display: flex; align-items: center; gap: 10px; min-width: 240px; animation: pop .15s; border-left: 4px solid var(--primary); pointer-events: auto; }
.toast.ok { border-left-color: var(--success); } .toast.err { border-left-color: var(--danger); } .toast.warn { border-left-color: var(--warning); }

/* ---------- tabs ---------- */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); padding: 0 18px; }
.tabs button { border: 0; background: transparent; padding: 12px 14px; cursor: pointer; color: var(--text-2); font-weight: 500; border-bottom: 2px solid transparent; margin-bottom: -1px; display: inline-flex; align-items: center; gap: 6px; }
.tabs button svg { width: 15px; height: 15px; stroke: currentColor; fill: none; stroke-width: 2; }
.tabs button.on { color: var(--primary); border-bottom-color: var(--primary); }
.tab-pane { display: none; }
.tab-pane.on { display: block; }

/* ---------- login ---------- */
body.auth { background: radial-gradient(1200px 600px at 20% -10%, #e6f4ff, transparent), radial-gradient(800px 500px at 110% 110%, #e6fffb, transparent), var(--bg); display: flex; align-items: center; justify-content: center; }
.login-box { width: 100%; max-width: 400px; background: #fff; border-radius: 12px; box-shadow: 0 12px 40px rgba(0, 0, 0, .1); padding: 32px 32px 24px; border: 1px solid var(--border); }
.login-box .brand { border: 0; height: auto; padding: 0; margin-bottom: 22px; }
.login-box .hint { color: var(--muted); font-size: 12px; margin-top: 16px; text-align: center; }
.login-box .lang-row { display: flex; justify-content: center; gap: 6px; margin-top: 14px; }

/* ---------- big screen (kiosk) ---------- */
body.screen { background: #050b1a; color: #e6f0ff; }
.screen-wrap { padding: 18px 24px; min-height: 100vh; display: flex; flex-direction: column; gap: 16px; }
.screen-top { display: flex; align-items: center; gap: 18px; }
.screen-top h1 { font-size: 26px; font-weight: 700; letter-spacing: .02em; color: #7dd3fc; }
.screen-top .clock { margin-left: auto; font-size: 30px; font-variant-numeric: tabular-nums; font-weight: 600; }
.screen-top .btn { background: #0f1b33; border-color: #1e3a5f; color: #cbd5e1; }
.screen-kpis { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }
.screen-kpi { background: #0b1730; border: 1px solid #1e3a5f; border-radius: 10px; padding: 12px 16px; }
.screen-kpi .k { color: #94a3b8; font-size: 13px; text-transform: uppercase; letter-spacing: .05em; }
.screen-kpi .v { font-size: 34px; font-weight: 700; line-height: 1.1; }
.screen-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; flex: 1; align-content: start; }
.screen-dev { background: #0b1730; border: 1px solid #1e3a5f; border-radius: 10px; padding: 12px 14px; border-left: 5px solid #475569; }
.screen-dev.s-online { border-left-color: #22c55e; } .screen-dev.s-pre_alarm { border-left-color: #f59e0b; } .screen-dev.s-alarm { border-left-color: #ef4444; background: #2a0f16; }
.screen-dev.s-offline { border-left-color: #64748b; opacity: .8; } .screen-dev.s-never_seen { border-left-color: #3b82f6; }
.screen-dev .n { font-weight: 600; font-size: 15px; display: flex; justify-content: space-between; gap: 8px; }
.screen-dev .n small { color: #94a3b8; font-weight: 500; font-size: 12px; }
.screen-dev .v { font-size: 38px; font-weight: 700; line-height: 1.1; margin: 6px 0 2px; letter-spacing: -.02em; }
.screen-dev .v small { font-size: 16px; color: #94a3b8; font-weight: 500; }
.screen-dev .v .rh { font-size: 20px; color: #7dd3fc; margin-left: 12px; }
.screen-dev .f { display: flex; justify-content: space-between; color: #94a3b8; font-size: 12px; }
.screen-alerts { background: #0b1730; border: 1px solid #1e3a5f; border-radius: 10px; padding: 12px 16px; }
.screen-alerts h2 { font-size: 15px; color: #fca5a5; margin-bottom: 8px; }
.screen-alerts .a { display: flex; gap: 12px; padding: 5px 0; border-bottom: 1px solid #1e293b; font-size: 14px; }
.screen-alerts .a:last-child { border: 0; }
.screen-alerts .ok { color: #86efac; }

/* ---------- responsive ---------- */
@media (max-width: 1200px) { .stat-tiles { grid-template-columns: repeat(3, 1fr); } .grid.c4 { grid-template-columns: repeat(2, 1fr); } .grid.c3 { grid-template-columns: repeat(2, 1fr); } .screen-kpis { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); transition: transform .2s; }
  body.nav-open .sidebar { transform: none; box-shadow: 0 0 40px rgba(0, 0, 0, .3); }
  .main { margin-left: 0; }
  .topbar .menu-btn { display: grid; }
  .topbar .clock, .topbar .user .urole { display: none; }
  .content { padding: 14px 16px 24px; }
  .stat-tiles, .grid.c2, .grid.c3, .grid.c4 { grid-template-columns: 1fr 1fr; }
  .form-grid, .form-grid.c3, .form-grid.c4 { grid-template-columns: 1fr; }
}
@media (max-width: 560px) { .stat-tiles, .grid.c2, .grid.c3, .grid.c4 { grid-template-columns: 1fr; } .tile { min-height: 76px; } .tile .t-value { font-size: 22px; } .page-head .crumbs { display: none; } }
.topbar .menu-btn { display: none; }
@media print { .sidebar, .topbar, .footer, .btn, .pager { display: none !important; } .main { margin: 0; } .card { box-shadow: none; break-inside: avoid; } }

/* ---------- page specific helpers ---------- */
.span2 { grid-column: span 2; }
@media (max-width: 900px) { .span2 { grid-column: auto; } }
a.gcard, a.gcard:hover { color: inherit; display: block; }
a.gcard:hover { border-color: var(--primary-bd); }
.tbl .spark { width: 130px; height: 30px; }
.tbl .spark svg { width: 130px; height: 30px; }
.big-val { font-size: 22px; font-weight: 600; }
.w-auto { width: auto; }
.stats-grid > div { padding: 6px 0; }
.legend i.c-t { background: var(--series-t); } .legend i.c-rh { background: var(--series-rh); }
.chip .badge.plain { padding: 0; width: 8px; height: 8px; border-radius: 50%; line-height: 8px; }
.chip .badge.plain.st-online { background: var(--st-online); } .chip .badge.plain.st-pre_alarm { background: var(--st-pre); } .chip .badge.plain.st-alarm { background: var(--st-alarm); }
.chip .badge.plain.st-offline { background: var(--st-offline); } .chip .badge.plain.st-never_seen { background: var(--st-never); } .chip .badge.plain.st-disabled { background: var(--st-disabled); }
.gcard-full .card-h h2 { font-size: 15px; }
.tile .t-label.small { font-size: 12px; }
.btn.busy { opacity: .7; }
.field .row input[type=number] { width: 110px; }
h3.small.muted { margin-top: 14px; text-transform: uppercase; letter-spacing: .05em; font-size: 11.5px; }
.tabs { flex-wrap: wrap; }
.topbar .lang, .topbar select { width: auto; height: 32px; }
.dev-card, .dev-card:hover { color: var(--text); }
.dev-card .dc-name { color: var(--primary); }
.dev-card .dc-val.na { color: var(--muted); font-size: 22px; }
body.screen .muted { color: #94a3b8; }
.tbl .limits { font-size: 12px; color: var(--text-2); white-space: nowrap; line-height: 1.35; }
.tbl .mono { font-size: 12px; }
body[data-page="devices"] .tbl { font-size: 13px; }
body[data-page="devices"] .tbl th, body[data-page="devices"] .tbl td { padding: 9px 10px; }

/* ---------- WF501B 2.1: corporate dark-cloud theme ---------- */
:root {
  --bg:#02091d; --card:#071a38; --border:#174a78; --line:#12375b;
  --text:#edf8ff; --text-2:#a8c9e7; --muted:#6f9fc7;
  --primary:#18c8ff; --primary-h:#5cdbff; --primary-bg:#082f57; --primary-bd:#1689c4;
  --success:#31e6a1; --success-bg:#07392f; --warning:#ffc04c; --warning-bg:#473413;
  --danger:#ff526d; --danger-bg:#481827; --info:#19c8ff;
  --series-t:#2fb5ff; --series-rh:#35dfa0; --series-limit:#ff6678; --grid:#17466f; --axis:#28618f;
  --shadow:0 0 0 1px rgba(15,116,190,.08), inset 0 0 22px rgba(0,105,225,.07), 0 8px 28px rgba(0,0,0,.18);
  --sidebar-w:264px;
}
body { background:radial-gradient(circle at 50% -10%,#073b7c 0,#03132f 32%,#020817 72%); }
body::before { content:""; position:fixed; inset:0; pointer-events:none; opacity:.16; background-image:radial-gradient(#18c8ff 1px,transparent 1px); background-size:26px 26px; mask-image:linear-gradient(to bottom,#000,transparent 78%); }
.app { position:relative; }
.sidebar { background:#020d25f7; border-right:1px solid var(--primary-bd); box-shadow:14px 0 38px rgba(0,0,0,.35); transform:translateX(-105%); transition:transform .2s ease; }
body.nav-open .sidebar { transform:none; }
.main { margin-left:0; }
.brand { border-bottom:1px solid var(--border); background:linear-gradient(90deg,rgba(17,85,152,.35),transparent); }
.brand .title { color:var(--text); }
.brand .logo { background:linear-gradient(135deg,#075dbe,#16d4ff); box-shadow:0 0 18px rgba(24,200,255,.35); }
.nav a { color:var(--text-2); border:1px solid transparent; }
.nav a:hover { background:#08274a; color:var(--text); border-color:#164e7d; }
.nav a.active { background:linear-gradient(90deg,#08477b,#08274a); color:var(--primary); border-color:#1476ac; box-shadow:inset 3px 0 var(--primary); }
.nav a.active::before { display:none; }
.topbar { background:#020d25ed; border-bottom:2px solid #087ec0; box-shadow:0 8px 24px rgba(0,0,0,.18); }
.topbar .menu-btn { display:grid; border:1px solid var(--primary-bd); background:#07315a; color:var(--primary); }
.topbar .icon-btn:hover { background:#0a3157; color:var(--primary); }
.topbar .lang { background:#061a38; border-color:var(--border); color:var(--text); }
.topbar .user { border-left-color:var(--border); }
.content { position:relative; z-index:1; }
.footer { background:#020d25; border-color:var(--border); }
.card,.tile,.dev-card,.modal,.toast,.login-box { background:linear-gradient(145deg,#091e40,#061630); border-color:var(--border); box-shadow:var(--shadow); }
.card-h,.modal-h,.modal-f,.tabs { border-color:var(--line); }
.tile { background:linear-gradient(145deg,#0a2147,#06162f); }
.tile:hover,.dev-card:hover { box-shadow:0 0 24px rgba(24,200,255,.16),var(--shadow); }
.tile .t-icon { background:#0a3157; }
.dev-card { background:linear-gradient(155deg,#091f42,#06152d); }
.dev-card .dc-name { color:var(--primary); }
.btn { background:#08213f; border-color:#225a87; color:var(--text); }
.btn:hover { background:#0a3157; border-color:var(--primary); color:var(--primary); }
.btn.primary { background:linear-gradient(135deg,#0867bd,#119ed5); border-color:#19c8ff; }
.btn.link { background:transparent; }
input[type=text],input[type=password],input[type=number],input[type=email],input[type=date],input[type=datetime-local],input[type=time],input[type=search],select,textarea,.multi { background:#04142e; border-color:#24567f; color:var(--text); }
input:focus,select:focus,textarea:focus { border-color:var(--primary); box-shadow:0 0 0 2px rgba(24,200,255,.15); }
input[type=color] { background:#04142e; border-color:#24567f; }
.tbl th { background:#071a37; color:var(--primary); border-color:var(--line); }
.tbl td { border-color:var(--line); }
.tbl tbody tr:hover { background:#09264a; }
.tbl tr.sel { background:#08335c; }
.pager button { background:#071a37; border-color:var(--border); color:var(--text); }
.tip { color:var(--text-2); }
.chip,.tag { background:#08213f; border-color:var(--border); color:var(--text-2); }
.st-online { color:#42e7a3; background:#073a30; border-color:#168462; }
.st-pre_alarm { color:#ffd06b; background:#433212; border-color:#936d20; }
.st-alarm { color:#ff7b8f; background:#481827; border-color:#a83b50; }
.st-offline,.st-disabled { color:#a5b9cc; background:#172538; border-color:#41566d; }
.st-never_seen { color:#73b9ff; background:#102b50; border-color:#2c659c; }
.st-pending { color:#c19cff; background:#2c1e50; border-color:#6544a0; }
.tabs button { color:var(--text-2); }
.tabs button.on { color:var(--primary); }
.modal-bg { background:rgba(0,5,18,.78); backdrop-filter:blur(3px); }
body.auth { background:radial-gradient(circle at 50% 15%,#073d80,#020817 68%); }
.login-box { max-width:430px; padding:34px 38px 28px; border-color:#1775ad; box-shadow:0 18px 65px rgba(0,0,0,.45),0 0 35px rgba(24,200,255,.12); position:relative; overflow:hidden; }
.login-box::before { content:""; position:absolute; inset:0 0 auto; height:3px; background:linear-gradient(90deg,transparent,#18c8ff,#7758ff,transparent); }
.login-box .brand { background:transparent; align-items:center; margin-bottom:26px; }
.logger-logo { width:56px; height:66px; display:grid; place-items:center; flex:0 0 auto; filter:drop-shadow(0 0 10px rgba(24,200,255,.35)); }
.logger-logo img { width:100%; height:100%; object-fit:contain; display:block; }
.sidebar .logger-logo { width:45px; height:54px; margin-right:9px; }
.login-box .logger-logo { width:72px; height:88px; margin-right:14px; }
.login-box .title { font-size:21px; color:#fff; }
.login-box h2 { color:#fff; font-size:25px; }
.login-box .btn.primary { min-width:125px; height:44px; font-size:15px; }
.login-box .hint { color:#719abb; }
.login-box .lang-row { display:none!important; }

/* Chrome/Edge paints remembered values white by default. Keep registration and
   login fields readable in the dark theme, including browser autofill. */
body.auth input[type=text], body.auth input[type=password], body.auth input[type=email], body.auth input[type=number], body.auth input[type=tel] {
  background:#04142e; border-color:#24567f; color:#f4f9ff; caret-color:#18c8ff;
  -webkit-text-fill-color:#f4f9ff;
}
body.auth input::placeholder { color:#719abb; opacity:1; }
body.auth input:-webkit-autofill,
body.auth input:-webkit-autofill:hover,
body.auth input:-webkit-autofill:focus,
body.auth input:-webkit-autofill:active {
  -webkit-text-fill-color:#f4f9ff !important;
  caret-color:#18c8ff;
  -webkit-box-shadow:0 0 0 1000px #04142e inset !important;
  box-shadow:0 0 0 1000px #04142e inset !important;
  border-color:#24567f;
  transition:background-color 9999s ease-out 0s;
}
.bars .bar b { color:var(--text-2); }
.monitor-summary { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:12px; }
.monitor-stat { min-height:96px; padding:16px 18px; border:1px solid var(--border); border-radius:10px; background:linear-gradient(145deg,#091e40,#061630); box-shadow:var(--shadow); position:relative; overflow:hidden; }
.monitor-stat::before { content:""; position:absolute; inset:0 auto 0 0; width:4px; background:var(--primary); }
.monitor-stat span { color:var(--text-2); }
.monitor-stat b { display:block; font-size:30px; line-height:1; margin-top:11px; color:#fff; }
.monitor-stat.online::before { background:var(--success); }
.monitor-stat.alarm::before { background:var(--danger); }
.monitor-stat.offline::before { background:#8094a8; }
.monitor-filters { margin-top:0; }
.dev-grid { grid-template-columns:repeat(auto-fill,minmax(270px,1fr)); gap:12px; }
.dev-card { border-top-width:1px; border-left:4px solid var(--st-offline); padding:15px; border-radius:10px; }
.dev-card.s-online { border-left-color:var(--st-online); }
.dev-card.s-pre_alarm { border-left-color:var(--st-pre); }
.dev-card.s-alarm { border-left-color:var(--st-alarm); }
.dev-card.s-never_seen { border-left-color:var(--st-never); }
.dev-card.s-disabled { border-left-color:var(--st-disabled); }
.dev-card .dc-name { font-size:16px; color:#fff; }
.dev-card .dc-vals { display:grid; grid-template-columns:1fr 1fr; gap:12px; margin:16px 0 10px; }
.dev-card .dc-metric-label { color:var(--text-2); font-size:12px; margin-bottom:6px; }
.dev-card .dc-val,.dev-card .dc-val.rh { font-size:28px; padding:0; color:#fff; }
.dev-card .dc-val.out,.dev-card .dc-val.rh.out { color:var(--danger); }
@media(max-width:700px){.monitor-summary{grid-template-columns:1fr 1fr}.monitor-stat{min-height:82px}.monitor-stat b{font-size:25px}}

/* 2.1.3: permanent left navigation, without the hamburger drawer */
.sidebar { transform:none!important; }
.main { margin-left:var(--sidebar-w)!important; }
.topbar .menu-btn { display:none!important; }
@media(max-width:700px){
  :root { --sidebar-w:210px; }
  .sidebar .brand { padding-left:12px; padding-right:10px; }
  .sidebar .logger-logo { width:38px; height:46px; margin-right:5px; }
  .sidebar .brand .title { font-size:13px; }
  .sidebar .brand .sub { font-size:10px; }
  .nav a { padding-left:13px; padding-right:8px; }
}
@media(max-width:900px){.sidebar{transform:translateX(-105%)}body.nav-open .sidebar{transform:none}.main{margin-left:0}}