/* PatchBay UI: dark, node-editor inspired theme. */

:root {
  color-scheme: dark;
  --bg: #1d1d1d;
  --surface-1: #1a1a19;
  --surface-2: #262626;
  --surface-3: #303030;
  --border: #3d3d3d;
  --text-primary: #ececec;
  --text-secondary: #c3c2b7;
  --text-muted: #8f8e88;
  --accent: #4a8fe0;
  --danger: #d03b3b;
  --good: #0ca30c;
  --series-1: #3987e5;   /* in / TCP */
  --series-2: #d95926;   /* out / UDP */
  --grid: #2f2f2d;
  --node-source: #2e7d4f;
  --node-csink: #2f5f9e;
  --node-psink: #a8452a;
  --node-split: #5a5a5a;
  --node-tsource: #1f7a7a;
  --node-tsink: #6a4a9e;
  --radius: 6px;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg);
  color: var(--text-primary);
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
code, .mono { font-family: var(--mono); font-size: 12.5px; }
h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 16px; margin: 0 0 12px; display: flex; align-items: center; gap: 8px; }
h3 { font-size: 14px; margin: 18px 0 8px; }
.muted { color: var(--text-muted); }
.small { font-size: 12.5px; }
.right { text-align: right; }

/* Top bar */
.topbar {
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  padding: 8px 16px; background: var(--surface-2); border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; letter-spacing: .02em; }
.topbar nav { display: flex; gap: 4px; }
.topbar nav a {
  color: var(--text-secondary); text-decoration: none; padding: 6px 12px; border-radius: var(--radius);
}
.topbar nav a:hover { background: var(--surface-3); }
.topbar nav a.active { background: var(--surface-3); color: var(--text-primary); }
.tools { display: flex; align-items: center; gap: 8px; }
.logout { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.who { color: var(--text-muted); }

/* Controls */
.btn {
  font: inherit; color: var(--text-primary); background: var(--surface-3);
  border: 1px solid var(--border); border-radius: var(--radius); padding: 6px 14px; cursor: pointer;
}
.btn:hover { background: #3a3a3a; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.1); }
.btn.danger { color: #ff8a8a; }
.btn.small { padding: 3px 10px; font-size: 12.5px; }
.btn[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }
input, select, textarea {
  font: inherit; color: var(--text-primary); background: var(--surface-1);
  border: 1px solid var(--border); border-radius: 4px; padding: 6px 8px; width: 100%;
}
input:focus, select:focus, textarea:focus, .btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
label { display: flex; flex-direction: column; gap: 4px; color: var(--text-secondary); font-size: 13px; }

/* Layout */
.page { max-width: 1100px; margin: 0 auto; padding: 24px 16px 48px; }
.page-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.page-head h1 { margin: 0; }
.card {
  background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px;
  padding: 16px; margin: 16px 0;
}
.form-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; align-items: end; margin-top: 12px; }
.form-grid .wide { grid-column: 1 / -1; }
.form-grid .actions { grid-column: 1 / -1; }
.inline-form { display: flex; gap: 8px; align-items: center; flex: 1; flex-wrap: wrap; }
.inline-form input { width: auto; flex: 1; min-width: 160px; }
.user-row { display: flex; gap: 8px; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--border); }

table.grid { width: 100%; border-collapse: collapse; }
table.grid th, table.grid td { padding: 6px 8px; border-bottom: 1px solid var(--border); text-align: left; }
table.grid th { color: var(--text-muted); font-weight: 600; font-size: 12.5px; }
table.grid .num { text-align: right; font-variant-numeric: tabular-nums; }
td.key { max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.table-wrap { max-height: 360px; overflow: auto; margin-top: 8px; }

.dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; flex: none; }
.dot.on { background: var(--good); }
.dot.off { background: #666; }

/* Flash messages */
.flashes { max-width: 1100px; margin: 12px auto 0; padding: 0 16px; }
.flash { padding: 8px 12px; border-radius: var(--radius); margin: 6px 0; border: 1px solid var(--border); }
.flash.ok { background: #1f3323; border-color: #2e5a36; }
.flash.error { background: #3a1f1f; border-color: #6a2e2e; }

/* Login */
body.auth main { display: flex; justify-content: center; padding-top: 12vh; }
.auth-card { width: 340px; display: flex; flex-direction: column; gap: 12px; }
.auth-card h1 { margin: 0; }
input.code { font-family: var(--mono); font-size: 22px; letter-spacing: .3em; text-align: center; }

/* Patch editor */
.editor-main { position: absolute; inset: 49px 0 0 0; }
#editor {
  position: absolute; inset: 0; overflow: hidden; outline: none; cursor: default;
  background-color: var(--surface-1);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 24px 24px;
}
#editor.panning { cursor: grabbing; }
#wires { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; pointer-events: none; }
#wires path { fill: none; stroke-width: 2.5; pointer-events: stroke; cursor: pointer; }
#wires path.hit { stroke: transparent; stroke-width: 14; }
#wires path.tcp { stroke: var(--series-1); }
#wires path.udp { stroke: var(--series-2); }
#wires path.none { stroke: #9a9a9a; }
#wires path.selected { stroke: #fff; stroke-width: 3.5; }
#wires path.temp { stroke: #ddd; stroke-dasharray: 6 4; pointer-events: none; }
#wires path.bad { stroke-dasharray: 4 4; }
#wires .wire-del { pointer-events: all; cursor: pointer; }
#wires .wire-del circle { fill: var(--surface-3); stroke: #fff; stroke-width: 1.5; }
#wires .wire-del path { stroke: #fff; stroke-width: 2; pointer-events: none; }
#wires .wire-del:hover circle { fill: var(--danger); }
#canvas { position: absolute; left: 0; top: 0; transform-origin: 0 0; }
.marquee {
  position: absolute; z-index: 5; pointer-events: none;
  border: 1px solid #f08a24; background: rgba(240, 138, 36, .15); border-radius: 2px;
}
.editor-hint {
  position: absolute; left: 12px; bottom: 10px; color: var(--text-muted); font-size: 12px;
  background: rgba(26, 26, 25, .85); padding: 4px 8px; border-radius: 4px; pointer-events: none;
}

.node {
  position: absolute; width: 220px; background: var(--surface-3); border: 1px solid #111;
  border-radius: 7px; box-shadow: 0 4px 14px rgba(0, 0, 0, .45); user-select: none;
}
.node.selected { outline: 2px solid #f0f0f0; }
.node-head {
  display: flex; align-items: center; gap: 6px; padding: 5px 8px; border-radius: 6px 6px 0 0;
  font-weight: 600; font-size: 12.5px; cursor: grab;
}
.node.client_source .node-head { background: var(--node-source); }
.node.client_sink .node-head { background: var(--node-csink); }
.node.public_sink .node-head { background: var(--node-psink); }
.node.splitter .node-head { background: var(--node-split); }
.node.tunnel_source .node-head { background: var(--node-tsource); }
.node.tunnel_sink .node-head { background: var(--node-tsink); }
.iface-wrap { display: block; width: 100%; }
.node-head .title { flex: 1; }
.node-head .x {
  background: none; border: 0; color: inherit; cursor: pointer; font-size: 15px; line-height: 1; opacity: .7; padding: 0 2px;
}
.node-head .x:hover { opacity: 1; }
.node-body { padding: 8px 10px 10px; display: flex; flex-direction: column; gap: 6px; }
.node-body label { flex-direction: row; align-items: center; justify-content: space-between; gap: 8px; font-size: 12px; }
.node-body label > span { flex: none; width: 54px; }
.node-body input, .node-body select { padding: 3px 6px; font-size: 12.5px; }
.node-body .origin { display: flex; flex-direction: column; gap: 4px; }
.node-body label.check { justify-content: flex-start; cursor: pointer; }
.node-body label.check > span { width: auto; }
.node-body label.check input { width: auto; flex: none; margin: 0; accent-color: var(--accent); }
.node-body label.check.disabled { opacity: 0.5; cursor: default; }
.node-status { font-size: 11.5px; color: var(--text-muted); min-height: 16px; display: flex; gap: 6px; align-items: center; }
.node-status.err { color: #ff8a8a; }
.socket {
  position: absolute; top: 40px; width: 14px; height: 14px; border-radius: 50%;
  background: #c8c8c8; border: 2px solid #111; cursor: crosshair;
}
.socket.in { left: -8px; }
.socket.out { right: -8px; }
.socket:hover, .socket.target { background: #fff; transform: scale(1.25); }

.dropdown { position: relative; }
.dropdown .menu {
  display: none; position: absolute; top: calc(100% + 4px); left: 0; z-index: 20; min-width: 190px;
  background: var(--surface-3); border: 1px solid var(--border); border-radius: var(--radius); padding: 4px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, .5);
}
.dropdown.open .menu { display: block; }
.dropdown .menu button {
  display: block; width: 100%; text-align: left; font: inherit; color: var(--text-primary);
  background: none; border: 0; padding: 6px 10px; border-radius: 4px; cursor: pointer;
}
.dropdown .menu button:hover, .dropdown .menu button:focus { background: var(--accent); outline: none; }
.save-state { color: var(--text-muted); font-size: 12.5px; min-width: 120px; }
.save-state.err { color: #ff8a8a; }

/* Help */
.help-toc { display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: 13.5px; }
.help { line-height: 1.55; }
.help p, .help ul, .help ol { margin: 0 0 10px; }
.help p:last-child, .help ul:last-child, .help ol:last-child { margin-bottom: 0; }
.help li + li { margin-top: 6px; }
.help-table { border-collapse: collapse; width: 100%; margin-bottom: 10px; }
.help-table td { padding: 7px 10px 7px 0; border-top: 1px solid var(--border); vertical-align: top; }
.help-table td:first-child { white-space: nowrap; font-weight: 600; width: 1%; }
.swatch { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 8px; }
.swatch.client_source { background: var(--node-source); }
.swatch.client_sink { background: var(--node-csink); }
.swatch.public_sink { background: var(--node-psink); }
.swatch.splitter { background: var(--node-split); }
.swatch.tunnel_source { background: var(--node-tsource); }
.swatch.tunnel_sink { background: var(--node-tsink); }
@media (max-width: 640px) {
  .help-table td:first-child { white-space: normal; }
}

/* Stats */
.filter-row { display: flex; gap: 16px; align-items: end; flex-wrap: wrap; margin-bottom: 16px; }
.filter-row label { min-width: 280px; flex: 1; }
.segmented { display: inline-flex; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.segmented button {
  font: inherit; background: var(--surface-2); color: var(--text-secondary); border: 0; padding: 6px 12px; cursor: pointer;
  border-right: 1px solid var(--border);
}
.segmented button:last-child { border-right: 0; }
.segmented button.selected { background: var(--surface-3); color: var(--text-primary); font-weight: 600; }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; }
.tile { background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px; padding: 12px 14px; }
.tile-value { font-size: 22px; font-weight: 650; font-variant-numeric: tabular-nums; }
.tile-label { color: var(--text-muted); font-size: 12.5px; }
.chart-card { background: var(--surface-1); }
.chart-head { display: flex; justify-content: space-between; align-items: center; }
.chart { position: relative; height: 240px; }
.chart.loading { opacity: .5; }
.chart svg { width: 100%; height: 100%; display: block; }
.chart .axis text { fill: var(--text-muted); font-size: 11px; }
.chart .gridline { stroke: var(--grid); stroke-width: 1; }
.chart .line { fill: none; stroke-width: 2; stroke-linejoin: round; }
.chart .s1 { stroke: var(--series-1); }
.chart .s2 { stroke: var(--series-2); }
.chart .bar { fill: var(--series-1); }
.chart .bar.hover { fill: #6da7ec; }
.chart .crosshair { stroke: var(--text-muted); stroke-width: 1; }
.chart .marker { stroke: var(--surface-1); stroke-width: 2; }
.chart .marker.s1 { fill: var(--series-1); }
.chart .marker.s2 { fill: var(--series-2); }
.chart .endlabel { font-size: 11.5px; fill: var(--text-secondary); }
.chart .empty { fill: var(--text-muted); font-size: 13px; }
.legend { display: flex; gap: 14px; color: var(--text-secondary); font-size: 12.5px; }
.legend .key { display: inline-flex; align-items: center; gap: 6px; }
.swatch-line { width: 16px; height: 2px; display: inline-block; }
.swatch-line.s1 { background: var(--series-1); }
.swatch-line.s2 { background: var(--series-2); }
.tooltip {
  position: fixed; z-index: 50; pointer-events: none; background: var(--surface-3); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 8px 10px; font-size: 12.5px; box-shadow: 0 6px 18px rgba(0, 0, 0, .5);
}
.tooltip .t-time { color: var(--text-muted); margin-bottom: 4px; }
.tooltip .t-row { display: flex; align-items: center; gap: 8px; }
.tooltip .t-row strong { font-variant-numeric: tabular-nums; }
.tooltip .t-row .muted { margin-left: 2px; }

@media (max-width: 640px) {
  .topbar { gap: 8px; }
  .logout .who { display: none; }
  .editor-main { inset: 96px 0 0 0; }
}