/* Copyright 2018-2026 Bipul Islam
   Licensed under the Apache License, Version 2.0. See LICENSE and NOTICE.
   SPDX-License-Identifier: Apache-2.0 */

:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --border: #dde1e7;
  --text: #1c2430;
  --muted: #667085;
  --accent: #2f6fde;
  --accent-text: #ffffff;
  --link: #7b8494;
  --select: #e8a317;
  --pin: #8b5cf6;
  --ok: #1f9d55;
  --warn: #c27c0e;
  --err: #d14343;
  --canvas: #ffffff;
  --grid: #eef0f3;
  --note: #fff7e0;
  --faded: #d3d8df;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #12151b;
    --surface: #1a1f27;
    --border: #2c333f;
    --text: #e4e8ee;
    --muted: #8d97a7;
    --accent: #5b8ff0;
    --link: #7b8494;
    --canvas: #161a21;
    --grid: #1f252e;
    --note: #2b2615;
    --faded: #3a414c;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body { height: 100%; margin: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  display: flex;
  flex-direction: column;
}

a { color: var(--accent); }
code, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.92em; }

/* ---------------------------------------------------------------- top bar */

.bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 16px;
  padding: 10px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.bar h1 { font-size: 16px; margin: 0; font-weight: 650; line-height: 1.2; }
.brand { display: flex; flex-direction: column; align-items: flex-start; }
.brand-links { display: flex; gap: 14px; }
.help-link {
  border: 0; background: none; padding: 0; margin-top: 1px;
  font-size: 12px; color: var(--accent); cursor: pointer;
}
.help-link:hover { text-decoration: underline; }

.help-pop {
  position: absolute; top: 12px; left: 12px; z-index: 5;
  width: min(430px, calc(100% - 24px)); max-height: calc(100% - 24px); overflow-y: auto;
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.15); padding: 12px 14px;
}
.view-pop { width: min(300px, calc(100% - 24px)); }
.about h3 { font-size: 12px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); margin: 10px 0 2px; font-weight: 600; }
.about h3:first-child { margin-top: 0; }
.about p { margin: 0; font-size: 13px; }
.help-link.pulse { animation: pulse 1s ease-in-out 3; border-radius: 4px; }
@keyframes pulse { 50% { background: color-mix(in srgb, var(--accent) 22%, transparent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 22%, transparent); } }
.help-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }

.bar-actions { display: flex; align-items: center; gap: 8px; margin-left: auto; flex-wrap: wrap; }

.status {
  font-size: 12px;
  padding: 2px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  white-space: nowrap;
}
.status::before { content: "●"; margin-right: 6px; }
.status.live::before { color: var(--ok); }
.status.demo::before { color: var(--accent); }
.status.down::before { color: var(--warn); }

.demo-note {
  background: var(--note);
  border-bottom: 1px solid var(--border);
  padding: 6px 16px;
  font-size: 13px;
}

button, .button, select, input[type="number"] {
  font: inherit;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 10px;
}
button, .button { cursor: pointer; display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
button:hover:not(:disabled), .button:hover { border-color: var(--accent); }
button:disabled { opacity: 0.45; cursor: default; }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
button.danger:hover:not(:disabled) { border-color: var(--err); color: var(--err); }
button.small { padding: 1px 8px; }
input[type="number"] { width: 100%; padding: 3px 6px; background: var(--bg); }
select { padding: 4px 6px; }

.seg { display: inline-flex; }
.seg button { border-radius: 0; margin-left: -1px; }
.seg button:first-child { border-radius: 6px 0 0 6px; margin-left: 0; }
.seg button:last-child { border-radius: 0 6px 6px 0; }
.seg button.on { background: var(--accent); border-color: var(--accent); color: var(--accent-text); position: relative; }
.seg.wide { display: flex; width: 100%; }
.seg.wide button { flex: 1; justify-content: center; }

.toggle { display: flex; align-items: center; gap: 6px; cursor: pointer; user-select: none; margin: 6px 0; }

/* ---------------------------------------------------------------- layout */

main { flex: 1; display: flex; min-height: 0; }

.canvas {
  flex: 1;
  position: relative;
  min-width: 0;
  background-color: var(--canvas);
  background-image: radial-gradient(var(--grid) 1px, transparent 1px);
  background-size: 20px 20px;
}

#graph { width: 100%; height: 100%; display: block; cursor: default; touch-action: none; }
.graph3d { position: absolute; inset: 0; overflow: hidden; }
.graph3d .scene-tooltip { font: 12px system-ui, sans-serif; }
#graph.add { cursor: crosshair; }

.panel {
  width: 330px;
  flex-shrink: 0;
  overflow-y: auto;
  background: var(--surface);
  border-left: 1px solid var(--border);
  padding: 0 14px 16px;
}

.panel details { border-bottom: 1px solid var(--border); padding: 10px 0; }
.panel details:last-child { border-bottom: 0; }
.panel summary {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
  margin-bottom: 8px;
}
.panel details:not([open]) summary { margin-bottom: 0; }

.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-top: 8px; }
.row .grow { flex: 1; }
.field-row { display: flex; gap: 8px; align-items: center; margin: 6px 0; }
.field-row select, .field-row input[type="range"] { flex: 1; min-width: 0; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 8px; }
.grid3 label, .params label { display: flex; flex-direction: column; gap: 2px; font-size: 12px; color: var(--muted); }
.params { display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px 8px; }
.params:empty { display: none; }
.row-label { font-size: 12px; color: var(--muted); margin: 10px 0 4px; }

.muted { color: var(--muted); margin: 0; }
.small { font-size: 12px; margin-top: 6px; }
.info { margin: 8px 0 0; font-size: 13px; }
.info b { font-weight: 600; }
.info .k { color: var(--muted); }

.chart { width: 100%; height: 110px; margin-top: 8px; display: block; }

.comm-list { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 8px; max-height: 120px; overflow-y: auto; }
.chip {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12px; padding: 1px 8px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--bg); cursor: pointer;
}
.chip:hover { border-color: var(--accent); }
.swatch { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }

.help { display: grid; grid-template-columns: auto 1fr; gap: 4px 10px; margin: 0; font-size: 13px; }
.help dt { color: var(--muted); }
.help dd { margin: 0; }

kbd {
  font: 11px ui-monospace, SFMono-Regular, Menlo, monospace;
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 0 4px;
}

/* ---------------------------------------------------------------- found vs truth */

.compare { margin-top: 12px; }
table.cmp { border-collapse: separate; border-spacing: 2px; font-size: 11px; font-variant-numeric: tabular-nums; width: 100%; table-layout: auto; }
table.cmp th { font-weight: 500; color: var(--muted); padding: 0; }
table.cmp th.corner { font-size: 10px; text-align: left; white-space: nowrap; }
table.cmp th .swatch { display: inline-block; vertical-align: middle; }
table.cmp th.rowh { text-align: left; white-space: nowrap; padding-right: 2px; }
table.cmp th.rowh .swatch { margin-right: 3px; }
table.cmp td { text-align: center; min-width: 16px; height: 18px; border-radius: 3px; background: var(--bg); cursor: default; }
table.cmp td[title] { cursor: pointer; }
table.cmp td.main, table.cmp th.main {
  background: none; text-align: left; color: var(--muted); padding-left: 4px;
  max-width: 78px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

/* ---------------------------------------------------------------- inspector */

.focus { margin: 4px 0 8px; }
.focus-row { display: flex; align-items: center; gap: 8px; font-size: 13px; margin: 3px 0; }
.focus-row .grow { flex: 1; }
.ring { width: 12px; height: 12px; border-radius: 50%; border: 1.6px solid var(--text); flex-shrink: 0; }
.ring.dashed { border-style: dashed; }

.inspector .title { display: flex; align-items: center; gap: 8px; font-weight: 600; margin-bottom: 6px; }
.inspector .facts { font-size: 13px; color: var(--muted); margin: 0 0 6px; }
.field { display: grid; grid-template-columns: 72px 1fr; align-items: center; gap: 8px; margin: 5px 0; }
.field > label { color: var(--muted); font-size: 13px; }
.stepper { display: flex; align-items: center; gap: 4px; }
.stepper input { text-align: center; }
.actions { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin-top: 8px; }
.actions button { justify-content: center; }

/* ---------------------------------------------------------------- overlays */

.legend {
  position: absolute; left: 12px; bottom: 12px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 6px;
  padding: 6px 10px; font-size: 12px; color: var(--muted);
}
.legend .bar-grad { width: 140px; height: 8px; border-radius: 4px; margin: 4px 0 2px; }
.legend .ends { display: flex; justify-content: space-between; }

.busy {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  background: color-mix(in srgb, var(--canvas) 70%, transparent);
  font-size: 14px; color: var(--muted); text-align: center; padding: 16px;
}

.toast {
  position: absolute;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);
  background: var(--text);
  color: var(--bg);
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 13px;
  max-width: calc(100% - 32px);
}

/* ---------------------------------------------------------------- phones */

@media (max-width: 760px) {
  main { flex-direction: column; }
  .canvas { min-height: 60vh; }
  .panel { width: auto; border-left: 0; border-top: 1px solid var(--border); }
  .bar-actions { margin-left: 0; }
}