/* =========================================================
   GRADIENT — terminal-editorial reader UI
   Direction A: serif headlines, mono chrome, signal-orange.
   Both themes deliberately tuned.
   ========================================================= */

/* ---------- tokens ---------- */
:root {
  --font-serif: "Newsreader", "Source Serif 4", Charter, Cambria, "Times New Roman", Georgia, serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", "Berkeley Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --font-sans: "IBM Plex Sans", "Söhne", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, sans-serif;

  /* sig-bar levels  -- shared */
  --sig-1: oklch(70% 0 0);
  --sig-2: oklch(60% 0.07 230);
  --sig-3: oklch(72% 0.13 95);
  --sig-4: oklch(70% 0.18 50);
  --sig-5: oklch(64% 0.21 25); /* signal-orange-ish */

  --accent: #ff4d1a;          /* signal-orange */
  --accent-soft: #ffb000;     /* terminal amber */
}

/* ---------- light ---------- */
[data-theme="light"] {
  --bg:      #f4f1ea;     /* warm paper */
  --bg-1:    #ebe7de;
  --bg-2:    #e2ddd0;
  --bg-panel: #faf7f0;
  --ink:     #111110;
  --ink-90:  #1c1c19;
  --ink-80:  #2a2a26;
  --ink-70:  #45453f;
  --ink-50:  #6a6a62;
  --ink-30:  #9c9c93;
  --ink-20:  #b8b8af;
  --ink-10:  #d0cfc4;
  --rule:    #d6d2c7;
  --rule-hard: #c2bdaf;
  --focus-bg: #ebe6d6;
  --focus-rule: #1c1c19;
  --pre-wire-bg: #f0e6c8;
  --pre-wire-ink: #6b4f00;
  --kbd-bg:  #ebe7de;
  --kbd-ink: #1c1c19;
}

/* ---------- dark ---------- */
[data-theme="dark"] {
  --bg:      #0c0c0d;      /* near-black, with a slight cool cast */
  --bg-1:    #131316;
  --bg-2:    #1a1a1f;
  --bg-panel: #0f0f12;
  --ink:     #ece8de;      /* warm off-white */
  --ink-90:  #d8d4c8;
  --ink-80:  #b6b3a8;
  --ink-70:  #8e8c83;
  --ink-50:  #6c6a62;
  --ink-30:  #4a4943;
  --ink-20:  #34332f;
  --ink-10:  #22221f;
  --rule:    #1f1f23;
  --rule-hard: #2c2c32;
  --focus-bg: #16161a;
  --focus-rule: #ece8de;
  --pre-wire-bg: #2a210a;
  --pre-wire-ink: #f0c870;
  --kbd-bg:  #1d1d22;
  --kbd-ink: #ece8de;
}

/* ---------- reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body, #root { height: 100%; margin: 0; }
body {
  font-family: var(--font-sans);
  font-size: 13px;
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "cv11";
}
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { margin: 0; font-weight: 500; }
input { font: inherit; color: inherit; background: none; border: 0; outline: 0; }
::selection { background: var(--accent); color: #fff; }

.grd-app {
  display: grid;
  grid-template-rows: 48px 32px 1fr 26px;
  height: 100vh;
  background: var(--bg);
}

/* ---------- top bar ---------- */
.grd-topbar {
  display: grid;
  grid-template-columns: 1fr minmax(280px, 520px) 1fr;
  align-items: center;
  gap: 16px;
  padding: 0 16px;
  border-bottom: 1px solid var(--rule-hard);
  background: var(--bg-panel);
}
.grd-topbar-left { display: flex; align-items: center; gap: 18px; }
.grd-topbar-center { display: flex; justify-content: center; }
.grd-topbar-right { display: flex; align-items: center; gap: 10px; justify-content: flex-end; }

.grd-wordmark {
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 500;
  letter-spacing: -0.01em;
  display: flex;
  align-items: baseline;
  gap: 10px;
  color: var(--ink);
}
.grd-wordmark i {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--accent);
  font-weight: 500;
}
.grd-wordmark-sub {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  color: var(--ink-50);
  text-transform: uppercase;
  padding-top: 2px;
}

.grd-topbar-segctl {
  display: inline-flex;
  border: 1px solid var(--ink-20);
  border-radius: 2px;
  overflow: hidden;
}
.grd-segbtn {
  font-family: var(--font-mono);
  font-size: 10.5px;
  text-transform: lowercase;
  letter-spacing: 0.04em;
  padding: 5px 10px;
  color: var(--ink-70);
  background: transparent;
  border-right: 1px solid var(--ink-20);
}
.grd-segbtn:last-child { border-right: 0; }
.grd-segbtn:hover { color: var(--ink); background: var(--bg-1); }
.grd-segbtn.is-on { background: var(--ink); color: var(--bg-panel); }
[data-theme="dark"] .grd-segbtn.is-on { background: var(--ink-90); color: var(--bg); }

.grd-search {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 6px 10px;
  border: 1px solid var(--ink-20);
  background: var(--bg);
  color: var(--ink-70);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
}
.grd-search:hover { border-color: var(--ink-50); }
.grd-search-text { flex: 1; text-align: left; color: var(--ink-50); }
.grd-search-text em { color: var(--ink); font-style: normal; }
.grd-search-kbd {
  font-family: var(--font-mono); font-size: 10px;
  padding: 1px 6px; border: 1px solid var(--ink-20); border-radius: 2px;
  color: var(--ink-50);
}

.grd-iconbtn {
  width: 24px; height: 24px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--ink-50);
  border: 1px solid transparent;
  border-radius: 2px;
}
.grd-iconbtn:hover { color: var(--ink); background: var(--bg-1); border-color: var(--ink-20); }
.grd-iconbtn.is-on { color: var(--accent); }
.grd-iconbtn--top { font-family: var(--font-mono); font-size: 12px; }

.grd-acct {
  width: 24px; height: 24px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--ink-20);
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  color: var(--ink-80);
  border-radius: 2px;
}

/* ---------- sub-strap ---------- */
.grd-strap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  border-bottom: 1px solid var(--rule);
  background: var(--bg-panel);
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-70);
}
.grd-strap-left, .grd-strap-right { display: flex; align-items: center; gap: 14px; }
.grd-strap-eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink-50);
  font-size: 9.5px;
}
.grd-strap-meta { display: flex; align-items: center; gap: 6px; }
.grd-strap-meta--brk { color: var(--accent); }
.grd-strap-meta--brk::before { content: ''; width: 6px; height: 6px; background: var(--accent); border-radius: 50%; animation: grd-pulse 1.8s ease-in-out infinite; }
@keyframes grd-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.65); }
}
.grd-pulse-dot-live {
  width: 6px; height: 6px; background: oklch(70% 0.18 145); border-radius: 50%;
  animation: grd-pulse 1.8s ease-in-out infinite;
  display: inline-block; margin-right: 6px;
}
.grd-clear {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent);
  padding: 2px 6px;
  border: 1px solid currentColor;
  border-radius: 2px;
  text-transform: lowercase;
  letter-spacing: 0.04em;
}

/* ---------- layout ---------- */
.grd-main {
  display: grid;
  grid-template-columns: 220px 1fr 312px;
  min-height: 0;
  overflow: hidden;
}
.grd-main > * { min-height: 0; }
.grd-leftrail.is-collapsed { display: none; }
.grd-main:has(.grd-leftrail.is-collapsed) { grid-template-columns: 1fr 304px; }

/* ---------- left rail ---------- */
.grd-leftrail {
  border-right: 1px solid var(--rule-hard);
  background: var(--bg-panel);
  overflow-y: auto;
  padding: 14px 14px 14px 14px;
  font-size: 12px;
}
.grd-rail-section {
  padding-bottom: 14px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--rule);
}
.grd-rail-section:last-child { border-bottom: 0; }
.grd-rail-eyebrow {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  color: var(--ink-50);
  text-transform: uppercase;
  margin-bottom: 9px;
}
.grd-rail-eyebrow--alt { margin-top: 18px; }

.grd-rail-view {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 5px 6px;
  margin-left: -6px;
  border-radius: 2px;
  color: var(--ink-80);
}
.grd-rail-view:hover { background: var(--bg-1); color: var(--ink); }
.grd-rail-view.is-active { color: var(--ink); }
.grd-rail-view.is-active::before {
  content: '›';
  position: absolute;
  margin-left: -10px;
  color: var(--accent);
  font-family: var(--font-mono);
}
.grd-rail-view-kbd {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-50);
}
.grd-rail-view-count {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-50);
  padding: 0 5px;
  border: 1px solid var(--ink-20);
  border-radius: 2px;
}

.grd-rail-check {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 3px 0;
  cursor: pointer;
  color: var(--ink-80);
}
.grd-rail-check:hover { color: var(--ink); }
.grd-rail-check input { display: none; }
.grd-rail-check-box {
  width: 11px; height: 11px;
  border: 1px solid var(--ink-30);
  display: inline-block;
  flex-shrink: 0;
  position: relative;
}
.grd-rail-check input:checked + .grd-rail-check-box {
  border-color: var(--ink);
  background: var(--ink);
}
.grd-rail-check input:checked + .grd-rail-check-box::after {
  content: '';
  position: absolute;
  inset: 2px;
  background: var(--bg-panel);
}
.grd-rail-check-label {
  font-family: var(--font-mono);
  font-size: 11px;
}

.grd-rail-sigrow {
  display: flex;
  gap: 4px;
}
.grd-rail-sigbtn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 5px 0 4px;
  border: 1px solid var(--ink-20);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-70);
}
.grd-rail-sigbtn-bar {
  width: 100%;
  height: 4px;
}
.grd-rail-sigbtn[class*="is-active"] {
  border-color: var(--ink);
  color: var(--ink);
}
.grd-rail-sigbtn:hover { color: var(--ink); }
.grd-rail-sigcaption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-80);
  text-transform: lowercase;
}
.grd-mono-dim { color: var(--ink-50); }

.grd-rail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.grd-rail-saved {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-column-gap: 8px;
  width: 100%;
  padding: 6px 8px;
  margin-left: -8px;
  text-align: left;
  border-radius: 2px;
}
.grd-rail-saved:hover { background: var(--bg-1); }
.grd-rail-saved-name { font-size: 12px; color: var(--ink); grid-column: 1; }
.grd-rail-saved-sub {
  grid-column: 1;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-50);
}
.grd-rail-saved-count {
  grid-column: 2; grid-row: 1 / span 2;
  align-self: center;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-50);
  padding: 0 5px;
  border: 1px solid var(--ink-20);
  border-radius: 2px;
}
.grd-rail-newview {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-50);
  padding: 4px 0;
  margin-top: 4px;
}
.grd-rail-newview:hover { color: var(--accent); }

.grd-rail-foot {
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: var(--ink-30);
  padding-top: 10px;
  line-height: 1.6;
}

/* ---------- tags ---------- */
.grd-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.02em;
  color: var(--ink-70);
  padding: 2px 6px;
  border: 1px solid var(--ink-20);
  border-radius: 2px;
  background: transparent;
}
.grd-tag:hover {
  color: var(--ink);
  border-color: var(--ink-50);
}
.grd-tag.is-active {
  color: var(--bg-panel);
  background: var(--ink);
  border-color: var(--ink);
}
[data-theme="dark"] .grd-tag.is-active {
  background: var(--ink-90);
  color: var(--bg);
}

/* ---------- center / wire ---------- */
.grd-center {
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  position: relative;
}
.grd-wire-scroll {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
}
.grd-wire {
  /* nothing fancy — rows draw their own borders */
}

.grd-wire-brushnote {
  padding: 8px 18px;
  border-bottom: 1px solid var(--rule);
  background: var(--bg-1);
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-70);
  display: flex;
  justify-content: space-between;
}
.grd-wire-brushnote button {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 10px;
}

.grd-wire-end {
  padding: 24px 18px 60px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-50);
  display: flex;
  gap: 10px;
  align-items: center;
}
.grd-wire-end-mark { color: var(--accent); font-size: 13px; }

/* ---------- row ---------- */
.grd-row {
  display: grid;
  grid-template-columns: 4px 56px 116px 1fr 156px 52px;
  align-items: flex-start;
  gap: 12px;
  padding: 13px 16px 13px 0;
  border-bottom: 1px solid var(--rule);
  cursor: pointer;
  position: relative;
}
.grd-row--compact { padding: 8px 16px 8px 0; gap: 10px; }
.grd-row--spartan { padding: 5px 16px 5px 0; gap: 9px; grid-template-columns: 4px 48px 96px 1fr 132px 52px; }
.grd-row:hover { background: var(--bg-1); }
.grd-row.is-focused { background: var(--focus-bg); }
.grd-row.is-focused::before {
  content: '';
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--accent);
  pointer-events: none;
}
.grd-row.is-focused::after {
  content: '';
  position: absolute;
  top: 50%;
  right: -1px;
  transform: translateY(-50%);
  width: 0; height: 0;
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  border-left: 5px solid var(--accent);
  pointer-events: none;
}
.grd-row.is-expanded { background: var(--bg-panel); }
.grd-row.is-expanded.is-focused { background: var(--focus-bg); }

/* sig bar */
.grd-sigbar {
  width: 4px;
  align-self: stretch;
  background: var(--sig-2);
}
.grd-sigbar[data-level="1"] { background: var(--sig-1); opacity: 0.5; }
.grd-sigbar[data-level="2"] { background: var(--sig-2); opacity: 0.85; }
.grd-sigbar[data-level="3"] { background: var(--sig-3); }
.grd-sigbar[data-level="4"] { background: var(--sig-4); }
.grd-sigbar[data-level="5"] { background: var(--accent); }
[data-theme="light"] .grd-sigbar[data-level="1"] { background: var(--ink-30); opacity: 0.6; }

/* time column */
.grd-row-time {
  font-family: var(--font-mono);
  padding-top: 1px;
  text-align: right;
}
.grd-row-time-rel {
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--ink-90);
  letter-spacing: 0.01em;
}
.grd-row-time-lead {
  font-size: 9.5px;
  color: var(--ink-50);
  margin-top: 1px;
  letter-spacing: 0.04em;
}

/* prov */
.grd-row-prov {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-top: 1px;
  min-width: 0;
  overflow: hidden;
}
.grd-srcchip {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.01em;
  color: var(--ink-70);
  position: relative;
  padding-left: 9px;
  min-width: 0;
  overflow: hidden;
  white-space: nowrap;
}
.grd-srcchip-name {
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}
.grd-srcchip::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  width: 5px; height: 5px;
  background: var(--ink-50);
  border-radius: 50%;
}
.grd-srcchip[data-tier="0"]::before { background: var(--accent); }
.grd-srcchip[data-tier="1"]::before { background: var(--ink-90); }
.grd-srcchip[data-tier="2"]::before { background: var(--ink-70); }
.grd-srcchip[data-tier="3"]::before { background: var(--ink-50); }
.grd-srcchip[data-tier="4"]::before { background: var(--ink-30); }
.grd-srcchip-name-style { color: var(--ink-80); font-weight: 500; }
.grd-srcchip .grd-srcchip-name { color: var(--ink-80); font-weight: 500; }
.grd-srcchip-sep { color: var(--ink-30); }
.grd-srcchip-time { color: var(--ink-50); font-variant-numeric: tabular-nums; }
.grd-srcchip-eng { color: var(--ink-50); font-size: 9.5px; }
.grd-srcchip--more {
  color: var(--ink-50);
  padding-left: 9px;
  margin-top: 1px;
}

/* body */
.grd-row-body { min-width: 0; }
.grd-row-head {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.grd-row-headline {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 450;
  line-height: 1.22;
  letter-spacing: -0.014em;
  color: var(--ink);
  text-wrap: pretty;
}
.grd-row--compact .grd-row-headline { font-size: 15.5px; }
.grd-row--spartan .grd-row-headline { font-size: 14px; line-height: 1.3; font-family: var(--font-sans); font-weight: 500; }
.grd-row-headline:hover { color: var(--accent); }
.grd-row-dek {
  margin-top: 5px;
  font-size: 12px;
  line-height: 1.42;
  color: var(--ink-70);
  text-wrap: pretty;
  max-width: 62ch;
}

.grd-prewire {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.16em;
  background: var(--pre-wire-bg);
  color: var(--pre-wire-ink);
  padding: 1px 5px;
  border-radius: 2px;
  flex-shrink: 0;
  margin-top: 4px;
  white-space: nowrap;
}

/* tags */
.grd-row-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding-top: 4px;
  justify-content: flex-end;
  align-content: flex-start;
}

/* actions */
.grd-row-actions {
  display: flex;
  gap: 2px;
  padding-top: 1px;
  opacity: 0;
  transition: opacity 0.12s;
}
.grd-row:hover .grd-row-actions,
.grd-row.is-focused .grd-row-actions {
  opacity: 1;
}

/* ---------- detail ---------- */
.grd-detail {
  grid-column: 1 / -1;
  padding: 18px 18px 24px 20px;
  border-top: 1px solid var(--rule-hard);
  background: var(--bg-panel);
  cursor: default;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.grd-detail-fact {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  padding: 10px 14px;
  background: var(--bg);
  border: 1px solid var(--rule);
}
.grd-fact-row { min-width: 0; }
.grd-fact-k {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.18em;
  color: var(--ink-50);
  text-transform: uppercase;
  margin-bottom: 3px;
}
.grd-fact-v {
  font-size: 12px;
  color: var(--ink-80);
  line-height: 1.4;
}

.grd-detail-body {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 28px;
}
.grd-detail-main { min-width: 0; }
.grd-detail-eyebrow {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  color: var(--ink-50);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.grd-detail-eyebrow--alt { margin-top: 22px; }
.grd-detail-para {
  font-family: var(--font-serif);
  font-size: 15.5px;
  line-height: 1.55;
  color: var(--ink-90);
  margin: 0 0 12px;
  max-width: 64ch;
  text-wrap: pretty;
}
.grd-detail-watch {
  border-top: 1px solid var(--rule);
}
.grd-detail-watch li {
  padding: 6px 0;
  border-bottom: 1px solid var(--rule);
  font-size: 12px;
  color: var(--ink-80);
  position: relative;
  padding-left: 18px;
}
.grd-detail-watch li::before {
  content: '◆';
  position: absolute;
  left: 0;
  top: 5px;
  font-size: 8px;
  color: var(--accent);
}
.grd-detail-side { font-size: 12px; }

/* ---------- provenance trail ---------- */
.grd-prov-trail { position: relative; padding-left: 14px; }
.grd-prov-trail::before {
  content: '';
  position: absolute;
  left: 4px; top: 6px; bottom: 4px;
  width: 1px;
  background: var(--ink-20);
}
.grd-prov-trail-item {
  position: relative;
  padding: 6px 0 8px;
}
.grd-prov-trail-tick {
  position: absolute;
  left: -14px; top: 11px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--ink-50);
  border: 2px solid var(--bg-panel);
}
.grd-prov-trail-item[data-tier="0"] .grd-prov-trail-tick { background: var(--accent); }
.grd-prov-trail-item[data-tier="1"] .grd-prov-trail-tick { background: var(--ink-90); }
.grd-prov-trail-item[data-tier="4"] .grd-prov-trail-tick { background: var(--ink-30); }
.grd-prov-trail-src {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink);
}
.grd-prov-trail-sub {
  display: flex;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: var(--ink-50);
  margin-top: 1px;
}
.grd-prov-trail-tier { color: var(--ink-30); }
.grd-prov-trail-eng {
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: var(--ink-70);
  margin-top: 1px;
}

.grd-detail-velo {
  background: var(--bg);
  border: 1px solid var(--rule);
  padding: 8px 10px 4px;
}
.grd-detail-velo-axis,
.grd-rr-velo-axis {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--ink-50);
  margin-top: 2px;
}

.grd-detail-links li {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 0;
  border-bottom: 1px dotted var(--ink-20);
}
.grd-detail-links a { color: var(--ink-80); text-decoration: none; }
.grd-detail-links a:hover { color: var(--accent); text-decoration: underline; }

/* ---------- right rail ---------- */
.grd-rightrail {
  border-left: 1px solid var(--rule-hard);
  background: var(--bg-panel);
  overflow-y: auto;
  padding: 14px 14px 24px;
}
.grd-rr-empty {
  margin: 10px 0 22px;
}
.grd-rr-empty-mark {
  font-family: var(--font-serif);
  font-size: 56px;
  line-height: 1;
  color: var(--accent);
  font-style: italic;
  margin: 4px 0 8px;
}
.grd-rr-empty-text {
  font-size: 12.5px;
  color: var(--ink-80);
  line-height: 1.5;
  max-width: 30ch;
  text-wrap: pretty;
}
.grd-rr-empty-kbd {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-50);
  margin-top: 14px;
}
.grd-rr-empty-kbd > span { display: flex; align-items: center; gap: 6px; }

.grd-rr-stats li {
  display: flex;
  justify-content: space-between;
  padding: 4px 0;
  border-bottom: 1px dotted var(--ink-20);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-70);
}
.grd-rr-stats li b {
  color: var(--ink);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.grd-rr-epigraph {
  margin: 6px 0 0;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 14px;
  line-height: 1.45;
  color: var(--ink-80);
  text-wrap: pretty;
  padding-left: 10px;
  border-left: 2px solid var(--accent);
}
.grd-rr-epigraph footer {
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 10px;
  color: var(--ink-50);
  margin-top: 6px;
}
.grd-rr-epigraph footer i { color: var(--ink-70); }

.grd-rr-velo {
  background: var(--bg);
  border: 1px solid var(--rule);
  padding: 8px 10px 4px;
}

.grd-rr-related li {
  display: grid;
  grid-template-columns: 4px 1fr;
  gap: 8px;
  padding: 7px 0;
  border-bottom: 1px solid var(--rule);
  cursor: pointer;
}
.grd-rr-related li:hover .grd-rr-related-head { color: var(--accent); }
.grd-rr-related-sig {
  width: 4px; align-self: stretch;
  background: var(--sig-2);
}
.grd-rr-related-sig[data-level="1"] { background: var(--sig-1); opacity: 0.5; }
.grd-rr-related-sig[data-level="3"] { background: var(--sig-3); }
.grd-rr-related-sig[data-level="4"] { background: var(--sig-4); }
.grd-rr-related-sig[data-level="5"] { background: var(--accent); }
.grd-rr-related-head {
  font-family: var(--font-serif);
  font-size: 13px;
  line-height: 1.3;
  color: var(--ink);
  text-wrap: pretty;
}
.grd-rr-related-meta {
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: var(--ink-50);
  margin-top: 3px;
  display: flex;
  gap: 4px;
}
.grd-rr-related-empty {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-50);
  padding: 8px 0;
}

.grd-rr-ent {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 8px;
  padding: 4px 0;
}
.grd-rr-ent-k {
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: var(--ink-50);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding-top: 1px;
}
.grd-rr-ent-v { display: flex; flex-wrap: wrap; gap: 3px; }
.grd-rr-ent-chip {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-80);
  padding: 1px 5px;
  background: var(--bg);
  border: 1px solid var(--ink-20);
  border-radius: 2px;
}

/* ---------- pulse ---------- */
.grd-pulse {
  padding: 22px 28px 12px;
  overflow-y: auto;
}
.grd-pulse-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 18px;
}
.grd-pulse-eyebrow {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.2em;
  color: var(--ink-50);
  margin-bottom: 6px;
}
.grd-pulse-title {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 450;
  letter-spacing: -0.015em;
  color: var(--ink);
}
.grd-pulse-legend { display: flex; gap: 12px; }
.grd-pulse-legend-item {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-70);
  display: flex;
  align-items: center;
  gap: 5px;
}
.grd-pulse-legend-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  display: inline-block;
}

.grd-pulse-svg {
  width: 100%;
  height: auto;
  display: block;
  background: var(--bg-panel);
  border: 1px solid var(--rule);
  cursor: crosshair;
  user-select: none;
}
.grd-pulse-grid { stroke: var(--rule); stroke-width: 1; stroke-dasharray: 2 3; }
.grd-pulse-grid--h { stroke-dasharray: 1 4; }
.grd-pulse-axis {
  font-family: var(--font-mono);
  font-size: 9px;
  fill: var(--ink-50);
  letter-spacing: 0.06em;
}
.grd-pulse-dot { transition: r 0.12s; cursor: pointer; }
.grd-pulse-dot:hover { r: 8; }
.grd-pulse-dot-ring { fill: none; stroke-width: 1; opacity: 0.5; }
.grd-pulse-brush { fill: var(--accent); fill-opacity: 0.08; stroke: var(--accent); stroke-width: 1; }
.grd-pulse-brush-active { fill: var(--accent); fill-opacity: 0.06; stroke: var(--accent); stroke-width: 1; stroke-dasharray: 3 3; }
.grd-pulse-tip-bg { fill: var(--bg); stroke: var(--ink); stroke-width: 1; }
[data-theme="dark"] .grd-pulse-tip-bg { fill: var(--bg-1); stroke: var(--ink-30); }
.grd-pulse-tip-meta {
  font-family: var(--font-mono);
  font-size: 9px;
  fill: var(--ink-50);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.grd-pulse-tip-head {
  font-family: var(--font-serif);
  font-size: 13px;
  line-height: 1.3;
  color: var(--ink);
  text-wrap: pretty;
}

.grd-pulse-caption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-70);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.grd-pulse-caption kbd {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink);
  padding: 1px 5px;
  background: var(--kbd-bg);
  border: 1px solid var(--ink-20);
  border-radius: 2px;
}
.grd-pulse-brushinfo { color: var(--accent); display: flex; align-items: center; gap: 10px; }
.grd-pulse-clear {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 10px;
  text-decoration: underline;
}

/* ---------- empty ---------- */
.grd-empty {
  padding: 80px 40px;
  text-align: left;
  max-width: 540px;
  margin: 0 auto;
}
.grd-empty-mark {
  font-family: var(--font-serif);
  font-size: 80px;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 18px;
}
.grd-empty-headline {
  font-family: var(--font-serif);
  font-size: 24px;
  color: var(--ink);
  margin-bottom: 22px;
}
.grd-empty-quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 17px;
  line-height: 1.45;
  color: var(--ink-80);
  border-left: 2px solid var(--accent);
  padding-left: 14px;
  text-wrap: pretty;
}
.grd-empty-quote footer {
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 11px;
  color: var(--ink-50);
  margin-top: 8px;
}

/* ---------- overlay ---------- */
.grd-overlay {
  position: fixed;
  inset: 0;
  background: color-mix(in srgb, var(--bg) 84%, transparent);
  backdrop-filter: blur(3px);
  z-index: 90;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 12vh;
}
.grd-overlay--search { padding-top: 18vh; }

.grd-help, .grd-searchbox {
  background: var(--bg-panel);
  border: 1px solid var(--rule-hard);
  width: min(820px, 92vw);
}
.grd-help-head {
  padding: 18px 22px 14px;
  border-bottom: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}
.grd-help-title {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--ink);
}
.grd-help-close {
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 3px 8px;
  border: 1px solid var(--ink-30);
  border-radius: 2px;
  color: var(--ink-70);
}
.grd-help-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  padding: 20px 22px;
}
.grd-help-coltitle {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-50);
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--rule);
}
.grd-help-tbl { width: 100%; border-collapse: collapse; font-size: 12px; }
.grd-help-tbl td { padding: 4px 0; vertical-align: top; }
.grd-help-tbl td:first-child { width: 90px; }
.grd-help-tbl td:last-child { color: var(--ink-80); }

.grd-kbd, kbd {
  font-family: var(--font-mono);
  font-size: 10.5px;
  display: inline-block;
  padding: 1px 5px;
  background: var(--kbd-bg);
  border: 1px solid var(--ink-20);
  border-bottom-width: 2px;
  border-radius: 2px;
  color: var(--ink);
  line-height: 1.3;
  margin-right: 4px;
}

.grd-help-foot {
  padding: 12px 22px 16px;
  border-top: 1px solid var(--rule);
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 12.5px;
  color: var(--ink-70);
}

/* ---------- search overlay ---------- */
.grd-searchbox-input {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--rule);
}
.grd-searchbox-input input {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--ink);
  background: transparent;
}
.grd-searchbox-input input::placeholder { color: var(--ink-50); }
.grd-search-go {
  font-family: var(--font-mono);
  color: var(--ink-50);
  padding: 2px 6px;
  border: 1px solid var(--ink-20);
  border-radius: 2px;
  font-size: 11px;
}
.grd-search-results { padding: 6px 0; max-height: 56vh; overflow-y: auto; }
.grd-search-result {
  display: grid;
  grid-template-columns: 6px 1fr;
  gap: 14px;
  width: 100%;
  padding: 9px 16px;
  text-align: left;
  border-bottom: 1px solid var(--rule);
}
.grd-search-result:hover { background: var(--bg-1); }
.grd-search-result-head {
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--ink);
  line-height: 1.3;
  text-wrap: pretty;
}
.grd-search-result-meta {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-50);
  margin-top: 2px;
}
.grd-search-empty, .grd-search-hints {
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-70);
}
.grd-search-empty em { color: var(--accent); font-style: normal; }
.grd-search-hints ul { display: grid; gap: 4px; margin-top: 8px; }
.grd-search-hints .grd-mono { color: var(--accent); font-family: var(--font-mono); }

/* ---------- chord indicator ---------- */
.grd-chord {
  position: fixed;
  bottom: 50px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-panel);
  border: 1px solid var(--rule-hard);
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-70);
  z-index: 80;
  display: flex; gap: 8px; align-items: center;
}

/* ---------- toast ---------- */
.grd-toast {
  position: fixed;
  bottom: 50px;
  right: 24px;
  background: var(--ink);
  color: var(--bg-panel);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 6px 10px;
  border-radius: 2px;
  z-index: 80;
  letter-spacing: 0.04em;
}
[data-theme="dark"] .grd-toast { background: var(--ink-90); color: var(--bg); }

/* ---------- status bar (the fingerprint) ---------- */
.grd-statusbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 16px;
  border-top: 1px solid var(--rule-hard);
  background: var(--bg-panel);
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-50);
  letter-spacing: 0.04em;
}
.grd-statusbar-spacer { flex: 1; }
.grd-statusbar kbd {
  font-size: 9px;
  padding: 0 4px;
  border-width: 1px;
  margin-right: 2px;
  margin-left: 4px;
}

/* ---------- scrollbars (dark mode esp) ---------- */
.grd-wire-scroll, .grd-leftrail, .grd-rightrail, .grd-pulse, .grd-search-results {
  scrollbar-width: thin;
  scrollbar-color: var(--ink-30) transparent;
}
.grd-wire-scroll::-webkit-scrollbar, .grd-leftrail::-webkit-scrollbar, .grd-rightrail::-webkit-scrollbar, .grd-pulse::-webkit-scrollbar {
  width: 8px;
}
.grd-wire-scroll::-webkit-scrollbar-thumb, .grd-leftrail::-webkit-scrollbar-thumb, .grd-rightrail::-webkit-scrollbar-thumb, .grd-pulse::-webkit-scrollbar-thumb {
  background: var(--ink-20);
}

/* ---------- focused-story right rail ---------- */
.grd-rr-toggle {
  display: flex;
  margin: -2px -2px 12px;
}
.grd-rr-toggle .grd-segbtn { flex: 1; padding: 6px 8px; font-size: 10px; }

.grd-rr-focusbar {
  display: grid;
  grid-template-columns: 4px 1fr;
  gap: 10px;
  padding: 4px 0 12px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 4px;
}
.grd-rr-focusbar-sig {
  width: 4px;
  align-self: stretch;
  background: var(--sig-3);
}
.grd-rr-focusbar-sig[data-level="1"] { background: var(--sig-1); opacity: 0.5; }
.grd-rr-focusbar-sig[data-level="2"] { background: var(--sig-2); }
.grd-rr-focusbar-sig[data-level="3"] { background: var(--sig-3); }
.grd-rr-focusbar-sig[data-level="4"] { background: var(--sig-4); }
.grd-rr-focusbar-sig[data-level="5"] { background: var(--accent); }
.grd-rr-focusbar-head {
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.28;
  color: var(--ink);
  margin-top: 4px;
  text-wrap: pretty;
}

.grd-rr-stages {
  display: grid;
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
.grd-rr-stages li {
  display: grid;
  grid-template-columns: 78px 1fr;
  grid-template-rows: auto auto;
  gap: 1px 10px;
  background: var(--bg-panel);
  padding: 7px 10px;
}
.grd-rr-stage-k {
  grid-column: 1;
  grid-row: 1 / span 2;
  align-self: center;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  color: var(--ink-50);
  text-transform: uppercase;
}
.grd-rr-stage-v {
  grid-column: 2;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink);
}
.grd-rr-stage-sub {
  grid-column: 2;
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: var(--ink-50);
}

/* sources list */
.grd-rr-livedot {
  display: inline-block;
  width: 5px; height: 5px;
  background: oklch(70% 0.18 145);
  border-radius: 50%;
  margin-left: 6px;
  vertical-align: middle;
  animation: grd-pulse 1.8s ease-in-out infinite;
}
.grd-rr-sources {
  font-family: var(--font-mono);
  font-size: 10.5px;
  border-top: 1px solid var(--rule);
}
.grd-rr-sources li {
  display: grid;
  grid-template-columns: 1fr 40px 40px 10px;
  gap: 6px;
  align-items: center;
  padding: 4px 0;
  border-bottom: 1px solid var(--rule);
  color: var(--ink-70);
}
.grd-rr-src-name { color: var(--ink-80); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.grd-rr-src-poll { color: var(--ink-50); font-size: 9.5px; text-align: right; }
.grd-rr-src-last { color: var(--ink-70); font-size: 9.5px; text-align: right; font-variant-numeric: tabular-nums; }
.grd-rr-src-ok {
  width: 6px; height: 6px; border-radius: 50%;
  background: oklch(70% 0.18 145);
}
.grd-rr-src-ok[data-ok="n"] { background: var(--accent); }

/* pipeline feed */
.grd-rr-feed {
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.5;
  border-left: 1px dashed var(--ink-20);
  padding-left: 10px;
  margin-left: 2px;
}
.grd-rr-feed-item {
  padding: 3px 0;
  display: grid;
  grid-template-columns: 56px 56px 1fr;
  gap: 4px 8px;
  align-items: baseline;
  color: var(--ink-70);
  position: relative;
}
.grd-rr-feed-item::before {
  content: '';
  position: absolute;
  left: -14px;
  top: 9px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--ink-30);
  border: 1.5px solid var(--bg-panel);
}
.grd-rr-feed-item[data-kind="ingest"]::before  { background: var(--ink-50); }
.grd-rr-feed-item[data-kind="dedup"]::before   { background: oklch(65% 0.12 250); }
.grd-rr-feed-item[data-kind="score"]::before   { background: var(--sig-4); }
.grd-rr-feed-item[data-kind="publish"]::before { background: var(--accent); width: 9px; height: 9px; left: -15px; top: 8px; }
.grd-rr-feed-t { color: var(--ink-50); font-size: 9.5px; font-variant-numeric: tabular-nums; }
.grd-rr-feed-kind {
  color: var(--ink-50);
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.grd-rr-feed-item[data-kind="publish"] .grd-rr-feed-kind { color: var(--accent); }
.grd-rr-feed-label { color: var(--ink-80); grid-column: 3; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.grd-rr-feed-note { grid-column: 3; color: var(--ink-50); font-size: 9.5px; padding-left: 0; }

/* prov trail wire tick */
.grd-prov-trail-item[data-prewire="y"] .grd-prov-trail-src { color: var(--ink-80); }
.grd-prov-trail-prew {
  font-size: 9px;
  color: var(--pre-wire-ink);
  background: var(--pre-wire-bg);
  padding: 0 4px;
  border-radius: 2px;
  letter-spacing: 0.1em;
}
.grd-prov-trail-wire .grd-prov-trail-src { color: var(--accent); font-weight: 500; }
.grd-prov-trail-tick--wire {
  background: var(--accent) !important;
  width: 11px !important;
  height: 11px !important;
  left: -15px !important;
}
.grd-prov-trail-tick--wire::after {
  content: '';
  position: absolute;
  inset: 2px;
  background: var(--bg-panel);
  border-radius: 50%;
}
.grd-prov-trail-wire {
  background: linear-gradient(to right, color-mix(in srgb, var(--accent) 7%, transparent), transparent);
  margin-left: -4px;
  padding-left: 4px;
}

/* ---------- responsive (graceful collapse) ---------- */
@media (max-width: 1100px) {
  .grd-main { grid-template-columns: 1fr; }
  .grd-leftrail, .grd-rightrail { display: none; }
  .grd-row { grid-template-columns: 4px 56px 110px 1fr 48px; padding-right: 14px; }
  .grd-row-tags { display: none; }
  .grd-row-prov { display: none; }
  .grd-row { grid-template-columns: 4px 56px 1fr 48px; }
}
@media (max-width: 700px) {
  .grd-topbar { grid-template-columns: 1fr auto; }
  .grd-topbar-center { display: none; }
  .grd-wordmark-sub { display: none; }
  .grd-row { grid-template-columns: 4px 1fr 36px; }
  .grd-row-time { display: none; }
}