:root {
  --bg: #f4f5f7; --surface: #ffffff; --surface-2: #eef0f3; --border: #d8dce2;
  --text: #1b1f24; --muted: #5f6b7a; --accent: #ff8300; --accent-text: #ffffff;
  --danger: #c62828; --ok: #2e7d32;
  --chassis: #2b3038; --chassis-edge: #1a1d22; --port-empty: #5a616b; --port-label: #c9ced6;
  --sel: #00b0ff;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14171b; --surface: #1d2127; --surface-2: #262b32; --border: #343a43;
    --text: #e6e9ed; --muted: #9aa4b1; --chassis: #3a404a; --chassis-edge: #0d0f12;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body { margin: 0; font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); }
a { color: inherit; }
.topbar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 24px; padding: 10px 16px; background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 5; }
.brand { font-weight: 700; font-size: 18px; color: var(--accent); }
.brand span { color: var(--muted); font-weight: 400; font-size: 13px; margin-left: 6px; }
nav { display: flex; flex-wrap: wrap; gap: 4px; }
nav a { text-decoration: none; padding: 6px 10px; border-radius: 6px; color: var(--muted); }
nav a.active, nav a:hover { background: var(--surface-2); color: var(--text); }
.userbox { margin-left: auto; display: flex; align-items: center; gap: 6px; flex-wrap: wrap; font-size: 13px; }
body.anon nav, body.anon .userbox { display: none; }
.login { max-width: 380px; margin: 48px auto; }
label.check { display: flex; gap: 6px; align-items: center; color: var(--text); font-size: 13px; }
.tag.admin { background: color-mix(in srgb, var(--accent) 18%, transparent); color: var(--accent); }
.ok { color: var(--ok); }
main { padding: 16px; max-width: 1500px; margin: 0 auto; }
h1 { font-size: 20px; margin: 4px 0 16px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
h1 button { font-size: 14px; font-weight: 500; }
h2 { font-size: 16px; margin: 20px 0 10px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 16px; margin-bottom: 16px; }
.muted { color: var(--muted); }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
button, .btn { font: inherit; padding: 6px 12px; border-radius: 6px; border: 1px solid var(--border); background: var(--surface-2); color: var(--text); cursor: pointer; text-decoration: none; display: inline-block; }
button:hover, .btn:hover { border-color: var(--muted); }
button.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
button.danger { color: var(--danger); }
button.small, .btn.small { padding: 2px 8px; font-size: 12px; }
input, select, textarea { font: inherit; padding: 6px 8px; border-radius: 6px; border: 1px solid var(--border); background: var(--surface); color: var(--text); width: 100%; }
input[type=color] { padding: 0 2px; height: 32px; width: 48px; }
input[type=checkbox], input[type=radio] { width: auto; }
[hidden] { display: none !important; }
label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 8px; }
label > input, label > select, label > textarea { margin-top: 2px; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 0 12px; }
table { border-collapse: collapse; width: 100%; }
td.nowrap { white-space: nowrap; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: 12px; color: var(--muted); font-weight: 600; }
tr.clickable { cursor: pointer; }
tr.clickable:hover td { background: var(--surface-2); }
tr.selected td { background: color-mix(in srgb, var(--sel) 15%, transparent); }
.table-wrap { overflow-x: auto; }
.swatch { display: inline-block; width: 12px; height: 12px; border-radius: 3px; vertical-align: -1px; border: 1px solid rgba(0,0,0,.25); }
.chip { display: inline-flex; align-items: center; gap: 4px; padding: 1px 7px; border-radius: 10px; font-size: 12px; background: var(--surface-2); border: 1px solid var(--border); margin: 1px 2px 1px 0; white-space: nowrap; }
.tag { font-size: 11px; padding: 1px 6px; border-radius: 4px; background: var(--surface-2); color: var(--muted); }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; }
.sw-card { cursor: pointer; text-decoration: none; display: block; }
.sw-card:hover { border-color: var(--accent); }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 2px 12px; font-size: 13px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; overflow-wrap: anywhere; }
.layout { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 16px; align-items: start; }
@media (max-width: 1000px) { .layout { grid-template-columns: minmax(0, 1fr); } .side { position: static; } }
.side { position: sticky; top: 70px; }

/* ---------- Front panel ---------- */
.panel-wrap { overflow-x: auto; padding-bottom: 4px; }
.chassis { display: inline-flex; align-items: center; gap: 12px; padding: 10px 12px; background: var(--chassis); border: 2px solid var(--chassis-edge); border-radius: 6px; min-width: max-content; }
.chassis .ident { color: var(--port-label); font-size: 11px; line-height: 1.3; max-width: 130px; }
.chassis .ident b { color: #fff; font-size: 12px; display: block; }
.chassis .ident .logo { color: var(--accent); font-weight: 700; letter-spacing: .5px; }
.pgroup { display: grid; grid-auto-flow: column; grid-template-rows: repeat(var(--rows), auto); gap: 3px; }
.pgroup.gap6 > .port:nth-child(12n+1):not(:first-child),
.pgroup.gap6 > .port:nth-child(12n+2):not(:nth-child(2)) { margin-left: 8px; }
.port { position: relative; width: 27px; height: 25px; border-radius: 3px; background: var(--port-empty); border: 2px solid var(--chassis-edge); cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 10px; font-weight: 600; color: #fff; text-shadow: 0 0 2px rgba(0,0,0,.8); user-select: none; overflow: hidden; }
.port.rj45::before { content: ""; position: absolute; top: -2px; left: 7.5px; width: 8px; height: 5px; background: var(--chassis-edge); border-radius: 0 0 2px 2px; }
.port.sfp { width: 31px; height: 21px; border-radius: 1px; border-color: #9aa1aa; }
.port.qsfp { width: 44px; height: 24px; border-radius: 1px; border-color: #b8bec6; }
.port .stripe { position: absolute; left: 0; right: 0; bottom: 0; height: 6px; display: flex; }
.port .stripe span { flex: 1; }
.port.trunk { outline: 1px dashed rgba(255,255,255,.6); outline-offset: -5px; }
.port.disabled { background-image: repeating-linear-gradient(45deg, rgba(0,0,0,.45) 0 3px, transparent 3px 6px) !important; }
.port.dim { opacity: .18; }
.port.selected { box-shadow: 0 0 0 2px var(--sel), 0 0 8px var(--sel); z-index: 1; }
.port.poe::after { content: ""; position: absolute; top: 2px; right: 2px; width: 4px; height: 4px; border-radius: 50%; background: #ffd54f; }
.legend { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 10px; font-size: 12px; color: var(--muted); }
.legend .demo { display: inline-block; width: 18px; height: 14px; border-radius: 2px; vertical-align: -3px; margin-right: 4px; background: var(--port-empty); border: 1px solid var(--chassis-edge); position: relative; }

/* ---------- Overview matrix ---------- */
.matrix td, .matrix th { text-align: center; white-space: nowrap; }
.matrix td:first-child, .matrix th:first-child { text-align: left; }
.cell { display: inline-block; min-width: 46px; padding: 2px 6px; border-radius: 4px; font-size: 12px; }

.toast { position: fixed; bottom: 16px; right: 16px; left: 16px; margin-left: auto; max-width: 420px; padding: 10px 14px; border-radius: 8px; background: var(--text); color: var(--bg); box-shadow: 0 4px 16px rgba(0,0,0,.3); z-index: 20; }
.toast.error { background: var(--danger); color: #fff; }
dialog { border: 1px solid var(--border); border-radius: 10px; background: var(--surface); color: var(--text); width: min(560px, calc(100vw - 32px)); padding: 16px; }
dialog::backdrop { background: rgba(0,0,0,.45); }
dialog h2 { margin-top: 0; }
.empty { padding: 32px; text-align: center; color: var(--muted); }
.vlan-picker { max-height: 180px; overflow-y: auto; border: 1px solid var(--border); border-radius: 6px; padding: 4px 8px; background: var(--surface); }
.vlan-picker label { display: flex; align-items: center; gap: 6px; color: var(--text); font-size: 13px; margin: 2px 0; }
/* ---------- v0.3 additions ---------- */
code, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12px; }
textarea.mono { white-space: pre; }
.badge { display: inline-block; min-width: 18px; padding: 0 5px; border-radius: 9px; font-size: 11px; line-height: 18px; text-align: center; background: #f9a825; color: #000; margin-left: 2px; }
.badge.err { background: var(--danger); color: #fff; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 16px; flex-wrap: wrap; }
.tabs a { padding: 8px 14px; text-decoration: none; color: var(--muted); border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs a.active { color: var(--text); border-bottom-color: var(--accent); font-weight: 600; }
.sev-error { background: color-mix(in srgb, var(--danger) 18%, transparent) !important; color: var(--danger) !important; }
.sev-warning { background: color-mix(in srgb, #f9a825 25%, transparent) !important; color: #8a5a00 !important; }
.sev-info { background: var(--surface-2) !important; color: var(--muted) !important; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .sev-warning { color: #ffd54f !important; } }
.stat-cards { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); margin-bottom: 16px; }
.card.stat { display: flex; flex-direction: column; align-items: flex-start; gap: 2px; text-align: left; cursor: pointer; margin: 0; }
.card.stat b { font-size: 26px; line-height: 1.1; }
.card.stat.active { outline: 2px solid var(--accent); }
.warnbox { border-color: #f9a825; }
.warnbox ul { margin: 8px 0 0; padding-left: 18px; }
.warnbox li { margin: 4px 0; }
.linkbox { border: 1px dashed var(--border); border-radius: 8px; padding: 8px 10px; margin: 8px 0; font-size: 13px; }
.linkchip { text-decoration: none; }
.port .lnk, .demo .lnk { position: absolute; top: 2px; left: 2px; width: 0; height: 0; border-top: 6px solid #fff; border-right: 6px solid transparent; }
.port .lagm { position: absolute; top: 0; left: 0; right: 0; font-style: normal; font-size: 7px; line-height: 8px; text-align: center; color: #fff; background: rgba(0,0,0,.45); }
.port.sfp .lagm, .port.qsfp .lagm { top: auto; bottom: 6px; }
.history td { font-size: 13px; }
.msg { padding: 8px 10px; border-radius: 6px; margin: 8px 0 0; font-size: 13px; }
.msg-err { background: color-mix(in srgb, var(--danger) 15%, transparent); color: var(--danger); }
.msg-warn { background: color-mix(in srgb, #f9a825 22%, transparent); }
.st-new { background: color-mix(in srgb, var(--ok) 18%, transparent) !important; color: var(--ok) !important; }
.st-change { background: color-mix(in srgb, #1e88e5 18%, transparent) !important; color: #1e88e5 !important; }
.st-warn { background: color-mix(in srgb, #f9a825 25%, transparent) !important; }
.st-err { background: color-mix(in srgb, var(--danger) 18%, transparent) !important; color: var(--danger) !important; }
.st-same { color: var(--muted) !important; }
.indent { padding-left: 22px; }
.switch-toggle { display: flex; gap: 8px; align-items: center; color: var(--text); font-size: 14px; margin: 10px 0; }
.switch-toggle input { width: 18px; height: 18px; }
.topo-card { padding: 0; overflow: hidden; }
#topo { width: 100%; display: block; }
#topo .tnode rect { fill: var(--surface-2); stroke: var(--border); stroke-width: 1.5; }
#topo a:hover .tnode rect { stroke: var(--accent); }
#topo .tnode.dim { opacity: .35; }
#topo .tname { font-weight: 700; font-size: 13px; fill: var(--text); }
#topo .tsub { font-size: 11px; fill: var(--muted); }
#topo .plabel { font-size: 10px; fill: var(--muted); paint-order: stroke; stroke: var(--surface); stroke-width: 3px; }
.btn.primary-outline { border-color: var(--accent); color: var(--accent); }

/* ---------- technician sheet (always light, A4 landscape) ---------- */
body.print-mode .topbar { display: none; }
body.print-mode main { max-width: none; padding: 0 0 32px; }
.print-toolbar { position: sticky; top: 0; z-index: 5; display: flex; gap: 12px; align-items: center; flex-wrap: wrap;
  padding: 10px 16px; background: var(--surface); border-bottom: 1px solid var(--border); margin-bottom: 20px; }
.print-toolbar label.check { margin: 0; }
.sheet { --ink: #111827; --ink-2: #4b5563; --line: #d1d5db; --tint: #f3f4f6;
  width: 297mm; max-width: calc(100vw - 32px); min-height: 210mm; margin: 0 auto; padding: 12mm 12mm 10mm;
  background: #fff; color: var(--ink); box-shadow: 0 2px 18px rgba(0,0,0,.25); border-radius: 2px;
  font-size: 10.5px; line-height: 1.4; color-scheme: light; }
.sheet .muted { color: var(--ink-2); }
.sheet .mono, .sheet-config { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.sheet .mono { font-size: 0.92em; }
.sheet h2 { font-size: 12px; margin: 0 0 6px; text-transform: uppercase; letter-spacing: .04em; color: var(--ink); }
.sheet-head { display: flex; justify-content: space-between; gap: 16px; align-items: flex-end;
  border-bottom: 2px solid var(--ink); padding-bottom: 8px; margin-bottom: 10px; }
.sheet-kicker { font-size: 10px; text-transform: uppercase; letter-spacing: .08em; color: #c25e00; font-weight: 700; }
.sheet-title { font-size: 24px; margin: 2px 0 0; line-height: 1.1; }
.sheet-sub { color: var(--ink-2); font-size: 11px; }
.sheet-meta { display: grid; grid-template-columns: max-content max-content; gap: 1px 10px; margin: 0; font-size: 10px; }
.sheet-meta dt { color: var(--ink-2); } .sheet-meta dd { margin: 0; text-align: right; }
.sheet-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 10px; }
.sheet-box { border: 1px solid var(--line); border-radius: 4px; padding: 8px 10px; }
.sheet .kv { font-size: 10.5px; grid-template-columns: 110px 1fr; }
.sheet .kv dt { color: var(--ink-2); }
.sheet-notes { margin: 6px 0 0; white-space: pre-wrap; border-top: 1px dashed var(--line); padding-top: 4px; }
.sheet-section { margin-top: 12px; }
.sheet-panel { overflow: hidden; }
.sheet-panel .legend { color: var(--ink-2); font-size: 10px; margin-top: 6px; }
.sheet-panel .chip { background: var(--tint); border-color: var(--line); color: var(--ink); font-size: 10px; }
.sheet-panel .port { cursor: default; }
.sheet-warn { border: 1.5px solid #d97706; background: #fffbeb; border-radius: 4px; padding: 8px 10px; }
.sheet-warn ul { margin: 0; padding-left: 16px; }
.sheet-table { width: 100%; border-collapse: collapse; font-size: 10px; }
.sheet-table th { background: var(--tint); color: var(--ink); font-size: 9.5px; text-transform: uppercase; letter-spacing: .03em;
  border: 1px solid var(--line); padding: 3px 5px; }
.sheet-table td { border: 1px solid var(--line); padding: 3px 5px; vertical-align: top; }
.sheet-table tr { break-inside: avoid; }
.sheet-table tr.unused td { color: #9ca3af; }
.sheet-table .swatch { width: 9px; height: 9px; margin-right: 4px; }
.sheet-table.ports tbody tr:nth-child(even) td { background: #fafafa; }
.check-col { width: 22px; text-align: center; }
.check-col .box { display: inline-block; width: 10px; height: 10px; border: 1px solid var(--ink); border-radius: 1px; }
.sheet-config { font-size: 9.5px; line-height: 1.35; background: var(--tint); border: 1px solid var(--line); border-radius: 4px;
  padding: 8px 10px; white-space: pre-wrap; columns: 2; column-gap: 24px; color: var(--ink); margin: 6px 0 0; }
.sign-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; margin-top: 18px; }
.sign-grid div, .sign-note { border-bottom: 1px solid var(--ink); height: 28px; position: relative; }
.sign-grid span, .sign-note span { position: absolute; bottom: -15px; left: 0; font-size: 9px; color: var(--ink-2); }
.sign-note { margin-top: 30px; height: 36px; }
.sheet-foot { margin-top: 26px; padding-top: 4px; border-top: 1px solid var(--line); font-size: 9px; color: var(--ink-2); text-align: right; }

/* ---------- CLI view ---------- */
pre.cli { margin: 0; padding: 10px 0; background: #0f1419; color: #d6dde6; border-radius: 8px; overflow: auto; max-height: 72vh;
  font: 12.5px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; counter-reset: ln; }
pre.cli .ln { display: block; padding: 0 14px 0 0; white-space: pre; }
pre.cli .ln::before { counter-increment: ln; content: counter(ln); display: inline-block; width: 3.2em; margin-right: 12px;
  padding-right: 8px; text-align: right; color: #56616e; border-right: 1px solid #26303a; user-select: none; }
pre.cli .c-com { color: #7d8a99; font-style: italic; }
pre.cli .c-sec { color: #ffb366; font-weight: 600; }
pre.cli .c-mode { color: #7cc4ff; font-weight: 600; }
pre.cli .c-dim { color: #56616e; }
pre.cli .c-warn { color: #ff8a80; }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.seg a { padding: 6px 12px; text-decoration: none; color: var(--muted); font-size: 13px; }
.seg a.active { background: var(--accent); color: var(--accent-text); }
.cli-help ol { padding-left: 18px; margin: 0 0 10px; }
.cli-help li { margin-bottom: 8px; font-size: 13px; }
.cli-help code { font-size: 11.5px; background: var(--surface-2); padding: 1px 4px; border-radius: 3px; overflow-wrap: anywhere; }

@page { size: A4 landscape; margin: 10mm; }

@media print {
  .topbar, .side, button, .no-print { display: none !important; }
  .layout { grid-template-columns: 1fr; }
  :root, :root:not([data-theme="light"]) { color-scheme: light !important; --bg: #fff; }
  html, body { background: #fff !important; }
  * { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  .sheet-config { columns: 3; font-size: 8px; line-height: 1.25; padding: 6px 8px; }
  body.print-mode main { padding: 0; }
  .sheet { width: auto; max-width: none; min-height: 0; margin: 0; padding: 0; box-shadow: none; border-radius: 0; }
  .avoid-break { break-inside: avoid; }
  .page-break { break-before: page; }
  .sheet-table thead { display: table-header-group; }
}

/* ---------- switch options ---------- */
.opt-list { display: grid; gap: 4px; margin: 10px 0; }
.opt { border: 1px solid var(--border); border-radius: 8px; padding: 8px 12px; }
.opt .switch-toggle { margin: 0; }
.opt-body { padding-left: 26px; font-size: 13px; display: flex; flex-wrap: wrap; gap: 6px 14px; align-items: center; }
.opt-body .muted { flex-basis: 100%; }
.opt-body code { font-size: 11.5px; background: var(--surface-2); padding: 1px 6px; border-radius: 4px; }
label.inline { display: inline-flex; align-items: center; gap: 6px; margin: 0; color: var(--text); font-size: 13px; }
label.inline select, label.inline input { width: auto; }