/* ContextLens — dark terminal aesthetic, deliberately single-mode.
   Color tokens follow the validated reference palette (dark steps). */

:root {
  --page:        #0d0d0d;
  --surface:     #1a1a19;
  --surface-2:   #222221;
  --ink:         #ffffff;
  --ink-2:       #c3c2b7;
  --ink-muted:   #898781;
  --hairline:    #2c2c2a;
  --baseline:    #383835;
  --border:      rgba(255, 255, 255, 0.10);

  --device:      #3987e5;   /* categorical slot 1 (dark) */
  --cloud:       #199e70;   /* categorical slot 2 (dark) */
  --pos:         #3987e5;   /* diverging: upgrade evidence */
  --neg:         #e66767;   /* diverging: churn evidence  */
  --mid:         #383835;   /* diverging neutral midpoint */

  --good:        #0ca30c;
  --warning:     #fab219;
  --critical:    #d03b3b;

  --sans: system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--page);
  color: var(--ink-2);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.5;
}

a { color: var(--device); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- header / controls ---------- */

.site-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 1.4rem 1.6rem 0.6rem;
  max-width: 1440px;
  margin: 0 auto;
}
.site-header h1 { margin: 0; font-size: 1.35rem; color: var(--ink); letter-spacing: 0.01em; }
.tagline { margin: 0.15rem 0 0; color: var(--ink-muted); font-size: 0.85rem; }

.subscriber-chip {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--ink-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.4rem 0.7rem;
  background: var(--surface);
}
.subscriber-chip b { color: var(--ink); font-weight: 600; }

.controls {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
  padding: 0.6rem 1.6rem 1rem;
  max-width: 1440px;
  margin: 0 auto;
}

.btn {
  font: inherit;
  font-size: 0.85rem;
  color: var(--ink-2);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem 0.9rem;
  cursor: pointer;
  transition: border-color 120ms, color 120ms, background 120ms;
}
.btn:hover { border-color: var(--ink-muted); color: var(--ink); }
.btn.active { border-color: var(--device); color: var(--ink); background: var(--surface-2); }
.btn-primary { background: var(--device); border-color: var(--device); color: #fff; font-weight: 600; }
.btn-primary:hover { color: #fff; filter: brightness(1.1); }
.btn-ghost { margin-left: auto; width: 2.2rem; text-align: center; padding: 0.5rem 0; }

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

.grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.2fr) minmax(0, 1.1fr);
  gap: 0.9rem;
  padding: 0 1.6rem;
  max-width: 1440px;
  margin: 0 auto;
}
.health {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 0.9rem;
  padding: 0.9rem 1.6rem 1.2rem;
  max-width: 1440px;
  margin: 0 auto;
}
/* responsive overrides live at the end of this file (must follow base rules) */

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.9rem 1rem 1rem;
  min-width: 0;
}
.panel-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 0.6rem;
}
.panel-head h2 { margin: 0; font-size: 0.82rem; font-weight: 600; color: var(--ink); letter-spacing: 0.04em; text-transform: uppercase; }
.panel-sub { font-size: 0.72rem; color: var(--ink-muted); }

/* ---------- quadrant A: feed ---------- */

.feed {
  font-family: var(--mono);
  font-size: 0.72rem;
  height: 430px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  scrollbar-width: thin;
}
.feed-empty { color: var(--ink-muted); padding: 1rem 0.2rem; }

.feed-item {
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--baseline);
  border-radius: 6px;
  background: var(--surface-2);
  padding: 0.45rem 0.6rem;
  animation: feed-in 300ms ease-out;
  cursor: default;
}
.feed-item.src-device { border-left-color: var(--device); }
.feed-item.src-cloud  { border-left-color: var(--cloud); }
.feed-item.hl { border-color: var(--ink-muted); }
@keyframes feed-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}

.feed-meta {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  color: var(--ink-muted);
  margin-bottom: 0.2rem;
  flex-wrap: wrap;
}
.feed-meta .src { color: var(--ink-2); font-weight: 700; }
.feed-meta .stale { color: var(--warning); }
.feed-json { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; color: var(--ink-2); }
.feed-json .k { color: var(--ink-muted); }
.feed-json .v { color: var(--ink); }

/* ---------- live signal form / privacy lines ---------- */

.privacy-line {
  margin-top: 0.35rem;
  font-size: 0.68rem;
  color: var(--ink-muted);
  border-top: 1px solid var(--hairline);
  padding-top: 0.3rem;
}
.privacy-line.device { color: #7fb98a; }

.live-form { margin-top: 0.7rem; border-top: 1px solid var(--hairline); padding-top: 0.7rem; }
.preset-chips { display: flex; gap: 0.4rem; flex-wrap: wrap; margin-bottom: 0.5rem; }
.chip {
  font: inherit;
  font-size: 0.72rem;
  color: var(--ink-2);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.28rem 0.65rem;
  cursor: pointer;
  transition: border-color 120ms, color 120ms;
}
.chip:hover { border-color: var(--device); color: var(--ink); }
.chip:disabled { opacity: 0.5; cursor: default; }
.live-form input[type="text"], .live-form input {
  width: 100%;
  font: inherit;
  font-size: 0.8rem;
  color: var(--ink);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem 0.7rem;
  margin-bottom: 0.45rem;
}
.live-form input:focus { outline: none; border-color: var(--device); }
.live-row { display: flex; gap: 0.45rem; flex-wrap: wrap; }
.live-row select {
  font: inherit;
  font-size: 0.78rem;
  color: var(--ink-2);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.4rem 0.5rem;
}
.live-row .btn { margin-left: auto; }
.live-note { font-size: 0.68rem; color: var(--ink-muted); margin-top: 0.4rem; }
.live-note.err { color: var(--warning); }

/* ---------- quadrant B: semantic map ---------- */

.legend { display: flex; gap: 0.9rem; flex-wrap: wrap; font-size: 0.72rem; color: var(--ink-2); margin-bottom: 0.4rem; }
.legend-item { display: inline-flex; align-items: center; gap: 0.35rem; }
.swatch { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }
.swatch-device { background: var(--device); }
.swatch-cloud { background: var(--cloud); }
.swatch-anchor { background: var(--ink-muted); opacity: 0.5; width: 6px; height: 6px; }
.swatch-centroid { background: transparent; border: 1.5px solid var(--ink-2); border-radius: 2px; transform: rotate(45deg); width: 7px; height: 7px; }

.map-wrap { width: 100%; }
#map { width: 100%; height: auto; display: block; }

#map .anchor-dot { fill: var(--ink-muted); opacity: 0.38; }
#map .centroid { fill: none; stroke: var(--ink-2); stroke-width: 1.5; }
#map .centroid-label { fill: var(--ink-2); font-size: 11px; font-family: var(--sans); font-weight: 600; }
#map .centroid-zone { fill: var(--ink-muted); opacity: 0.05; }
#map .event-dot { stroke: var(--surface); stroke-width: 2; opacity: 0; transition: opacity 250ms ease-out; }
#map .event-dot.on { opacity: 1; }
#map .event-dot.src-device { fill: var(--device); }
#map .event-dot.src-cloud { fill: var(--cloud); }
#map .event-dot.hl { stroke: var(--ink); }
#map .hit { fill: transparent; cursor: pointer; }

/* ---------- quadrant C: attribution ---------- */

.verdict {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: 0.9rem;
  margin-bottom: 0.9rem;
}
.stat-tile { background: var(--surface-2); border: 1px solid var(--hairline); border-radius: 8px; padding: 0.7rem 0.8rem; min-width: 0; }
.stat-label { font-size: 0.7rem; color: var(--ink-muted); letter-spacing: 0.03em; text-transform: uppercase; }
.stat-value { font-size: 1.02rem; font-weight: 600; color: var(--ink); margin: 0.25rem 0 0.45rem; line-height: 1.3; }
.hero-figure { font-size: 3rem; font-weight: 650; color: var(--ink); line-height: 1.1; margin-top: 0.1rem; }
.stat-delta { font-size: 0.72rem; color: var(--ink-muted); }

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.72rem;
  font-weight: 600;
  border-radius: 6px;
  padding: 0.25rem 0.55rem;
  border: 1px solid var(--border);
  color: var(--ink-2);
}
.status-badge.good     { color: var(--good); border-color: var(--good); }
.status-badge.warning  { color: var(--warning); border-color: var(--warning); }
.status-badge.critical { color: var(--critical); border-color: var(--critical); }

.attr-head {
  display: flex;
  justify-content: space-between;
  gap: 0.6rem;
  flex-wrap: wrap;
  font-size: 0.72rem;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 0.5rem;
}
.attr-scale { text-transform: none; letter-spacing: 0; }
.attr-scale .pos { color: var(--pos); }
.attr-scale .neg { color: var(--neg); }

.attr-bars { display: flex; flex-direction: column; gap: 0.55rem; min-height: 150px; }
.attr-row { display: grid; grid-template-columns: minmax(0, 1fr); gap: 0.15rem; }
.attr-label {
  font-size: 0.74rem;
  color: var(--ink-2);
  display: flex;
  justify-content: space-between;
  gap: 0.6rem;
  min-width: 0;
}
.attr-label .who { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.attr-label .val { color: var(--ink); font-weight: 600; }
.attr-track {
  position: relative;
  height: 14px;
  border-radius: 4px;
  background: var(--surface-2);
}
.attr-track::after {  /* neutral midline */
  content: "";
  position: absolute;
  left: 50%;
  top: -2px;
  bottom: -2px;
  width: 1px;
  background: var(--baseline);
}
.attr-fill {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 0;
  transition: width 400ms ease-out, left 400ms ease-out;
}
.attr-fill.pos { left: 50%; background: var(--pos); border-radius: 0 4px 4px 0; }
.attr-fill.neg { right: 50%; background: var(--neg); border-radius: 4px 0 0 4px; }
.attr-empty { color: var(--ink-muted); font-size: 0.78rem; padding: 0.5rem 0; }

.mini-toggle {
  font: inherit;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--good);
  background: transparent;
  border: 1px solid var(--good);
  border-radius: 6px;
  padding: 0.2rem 0.55rem;
  cursor: pointer;
}
.mini-toggle.off { color: var(--warning); border-color: var(--warning); }

.math { margin-top: 0.9rem; border-top: 1px solid var(--hairline); padding-top: 0.6rem; }
.math summary { cursor: pointer; font-size: 0.8rem; color: var(--device); }
.math-body { font-family: var(--mono); font-size: 0.7rem; margin-top: 0.6rem; overflow-x: auto; }
.math-body .formula { color: var(--ink); margin-bottom: 0.55rem; white-space: pre-wrap; }
.math-body table { border-collapse: collapse; width: 100%; font-variant-numeric: tabular-nums; }
.math-body th, .math-body td { text-align: right; padding: 0.2rem 0.5rem; border-bottom: 1px solid var(--hairline); }
.math-body th { color: var(--ink-muted); font-weight: 500; }
.math-body td:first-child, .math-body th:first-child { text-align: left; color: var(--ink-2); }

/* ---------- health strip ---------- */

.lamps { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.55rem; }
.lamp {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  font-size: 0.78rem;
  border: 1px solid var(--hairline);
  border-radius: 8px;
  padding: 0.5rem 0.65rem;
  background: var(--surface-2);
}
.lamp .icon { font-weight: 700; }
.lamp.good .icon { color: var(--good); }
.lamp.warning .icon { color: var(--warning); }
.lamp.critical .icon { color: var(--critical); }
.lamp .rule { color: var(--ink); font-weight: 600; }
.lamp .detail { color: var(--ink-muted); font-size: 0.72rem; }

.table-wrap { overflow-x: auto; }
.eval-table { width: 100%; border-collapse: collapse; font-size: 0.78rem; font-variant-numeric: tabular-nums; }
.eval-table th, .eval-table td { padding: 0.35rem 0.5rem; border-bottom: 1px solid var(--hairline); text-align: right; }
.eval-table th { color: var(--ink-muted); font-weight: 500; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.03em; }
.eval-table td:first-child, .eval-table th:first-child { text-align: left; }
.eval-table td { color: var(--ink-2); }
.eval-foot { font-size: 0.7rem; color: var(--ink-muted); margin-top: 0.5rem; }

.econ { display: grid; grid-template-columns: 1fr 1fr; gap: 0.6rem; }
.econ .stat-tile { padding: 0.6rem 0.7rem; }
.econ .stat-value { font-size: 1.25rem; margin-bottom: 0.1rem; }

/* ---------- footer / overlay / tooltip ---------- */

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 0.6rem 1.6rem 1.6rem;
  max-width: 1440px;
  margin: 0 auto;
  font-size: 0.72rem;
  color: var(--ink-muted);
}

.overlay[hidden] { display: none; }
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(13, 13, 13, 0.88);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 40;
  padding: 1rem;
}
.overlay-card {
  max-width: 560px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.6rem 1.8rem;
}
.overlay-card h2 { margin-top: 0; color: var(--ink); }
.overlay-card p { font-size: 0.9rem; }
.overlay-card strong { color: var(--ink); }

.tooltip {
  position: fixed;
  z-index: 50;
  max-width: 320px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.7rem;
  font-size: 0.72rem;
  pointer-events: none;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.5);
}
.tooltip .tt-title { color: var(--ink); font-weight: 600; margin-bottom: 0.25rem; }
.tooltip .tt-row { display: flex; justify-content: space-between; gap: 0.8rem; }
.tooltip .tt-row span:first-child { color: var(--ink-muted); }
.tooltip .tt-note { color: var(--ink-muted); margin-top: 0.3rem; font-style: italic; }

.tour-caption {
  position: fixed;
  left: 50%;
  bottom: 1.4rem;
  transform: translateX(-50%) translateY(8px);
  max-width: min(620px, calc(100vw - 2rem));
  background: var(--surface-2);
  border: 1px solid var(--device);
  border-radius: 10px;
  padding: 0.65rem 1rem;
  font-size: 0.85rem;
  color: var(--ink);
  z-index: 30;
  opacity: 0;
  transition: opacity 250ms ease-out, transform 250ms ease-out;
  pointer-events: none;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.55);
}
.tour-caption.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.tour-caption[hidden] { display: block; }

@media (prefers-reduced-motion: reduce) {
  .feed-item { animation: none; }
  #map .event-dot, .attr-fill { transition: none; }
}

/* ---------- responsive (after base rules so overrides win) ---------- */

@media (max-width: 1100px) {
  .grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  #panel-attr { grid-column: 1 / -1; }
  .health { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 720px) {
  .grid { grid-template-columns: minmax(0, 1fr); }
  .site-header, .controls, .grid, .health, .site-footer { padding-left: 0.9rem; padding-right: 0.9rem; }
  .verdict { grid-template-columns: minmax(0, 1fr); }
  .feed { height: 320px; }
  .hero-figure { font-size: 2.4rem; }
}