/* Design layer viewer — DHK "Electric Cobalt" light, plus the dark extension
   defined in docs/design/design-layer-viewer/SPEC.md §9.

   The dark palette is an EXTENSION. DHK ships light-only; if the studio
   publishes real dark tokens, swap the one block below and nothing else
   changes, because every component styles through a token.

   Kept separate from styles.css: that sheet tunes teal/orange to the
   harness's SAFE / LOW RISK / REVIEW semantics, and here the same three
   colours mean pass / gap-and-blocked / move. Same tokens, different
   meanings, so they do not share a file. */

:root {
  --bg:  #f5f6fa;
  --bg2: #eceef5;
  --bg3: #e0e3f0;

  --border:       #c8cde0;
  --border-light: #d8dbeb;

  --text:       #0d0f1a;
  --text-muted: #2a2d42;
  --text-dim:   #5a5d78;

  --accent:       #2b50e8;
  --accent-hover: #1a3bd4;

  --accent-purple: #8b2adc;
  --accent-orange: #e05c2a;
  --accent-teal:   #0ea5b0;

  --tint-study: rgba(14, 165, 176, 0.12);

  /* Exists only because the sticky header needs a translucent fill that no
     DHK token provides. */
  --header-bg: rgba(245, 246, 250, 0.86);

  --font-sans: system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "DM Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --radius: 4px;
  --read: 780px;
  --wide: 1080px;
}

:root[data-dlv-theme="dark"] {
  --bg:  #0d0f1a;
  --bg2: #15182a;
  --bg3: #1f2338;

  --border:       #2f3452;
  --border-light: #242942;

  --text:       #f2f3f9;
  --text-muted: #c3c7dc;
  --text-dim:   #8b90ab;

  --accent:       #6d86f5;
  --accent-hover: #93a7ff;

  --accent-purple: #b06ef0;
  --accent-orange: #f0834f;
  --accent-teal:   #34c3ce;

  --tint-study: rgba(52, 195, 206, 0.18);

  --header-bg: rgba(13, 15, 26, 0.86);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; transition: color 0.15s; }
a:hover { color: var(--accent-hover); }

button { font-family: inherit; cursor: pointer; }
button:focus-visible,
textarea:focus-visible,
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

h1, h2, h3 { line-height: 1.2; text-wrap: pretty; }

/* ── chrome ─────────────────────────────────────────────────────────────
   Mono is chrome only. It never carries prose. */
.mono {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.mono-plain {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: none;
  color: var(--text-dim);
}

.read { max-width: var(--read); }
.wide { max-width: var(--wide); margin: 0 auto; padding: 0 24px; }

/* ── header ─────────────────────────────────────────────────────────── */
.dlv-header {
  position: sticky; top: 0; z-index: 20;
  background: var(--header-bg);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.dlv-header-inner {
  max-width: var(--wide); margin: 0 auto; padding: 14px 24px;
  display: flex; align-items: center; gap: 20px;
}
.brand { display: flex; align-items: center; gap: 8px; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); flex: none; }
.brand-name {
  font-family: var(--font-mono); font-size: 13px;
  letter-spacing: 0.04em; color: var(--text);
}
.brand-sub { font-family: var(--font-mono); font-size: 13px; color: var(--text-dim); }
.sibling {
  font-family: var(--font-mono); font-size: 13px; color: var(--text-dim);
  margin-left: 10px; border-bottom: 1px solid transparent;
}
.sibling:hover { color: var(--accent); border-bottom-color: var(--accent); }
.spacer { flex: 1; }
.mode-value {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--accent);
}
.chip {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.06em;
  text-transform: uppercase; padding: 5px 10px; border-radius: var(--radius);
  border: 1px solid var(--border); background: transparent; color: var(--text-dim);
  transition: color 0.15s, border-color 0.15s;
}
.chip:hover { color: var(--accent); border-color: var(--accent); }
.chip.bare { border-color: transparent; }
.chip.bare:hover { color: var(--accent); border-color: transparent; }

/* ── buttons ────────────────────────────────────────────────────────── */
.btn {
  font-family: var(--font-mono); font-size: 11px; font-weight: 500;
  letter-spacing: 0.1em; text-transform: uppercase;
  padding: 12px 24px; border-radius: var(--radius);
  border: 1px solid transparent; transition: opacity 0.15s, color 0.15s, border-color 0.15s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { opacity: 0.85; }
.btn-primary[disabled] { opacity: 0.45; cursor: not-allowed; }
.btn-ghost { background: transparent; color: var(--text-muted); border-color: var(--border); }
.btn-ghost:hover { color: var(--accent); border-color: var(--accent); }

/* ── compose ────────────────────────────────────────────────────────── */
.compose { max-width: var(--read); margin: 0 auto; padding: 88px 24px 140px;
  display: flex; flex-direction: column; gap: 24px; }
.compose h1 {
  font-size: clamp(30px, 3.6vw, 42px); font-weight: 700;
  letter-spacing: -0.02em; line-height: 1.15; max-width: 640px;
}
.lede { font-size: 17px; line-height: 1.7; color: var(--text-muted); max-width: 620px; }

.stats {
  display: flex; gap: 28px; flex-wrap: wrap;
  padding-top: 20px; border-top: 1px solid var(--border); margin-top: 12px;
}
.stat-value { font-size: 15px; color: var(--text-muted); margin-top: 6px; }
.stat-value.live { color: var(--accent); }
.stat-value.idle { color: var(--text-dim); }

.draft-box {
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg2); padding: 22px;
  display: flex; flex-direction: column; gap: 14px; margin-top: 24px;
}
.draft-box textarea {
  width: 100%; min-height: 120px; resize: vertical; padding: 14px;
  border: 1px solid var(--border-light); border-radius: var(--radius);
  background: var(--bg); color: var(--text-muted);
  font-family: var(--font-mono); font-size: 13px; line-height: 1.7;
}
.draft-actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }

/* ── the answer ─────────────────────────────────────────────────────── */
.evaluated { padding: 64px 24px 160px; display: flex; flex-direction: column; }
.answer { max-width: 720px; display: flex; flex-direction: column; gap: 22px; }
.answer h1 {
  font-size: clamp(28px, 3.2vw, 38px); font-weight: 700;
  letter-spacing: -0.02em; line-height: 1.2;
}
.answer-body { font-size: 18px; line-height: 1.7; color: var(--text-muted); }
.answer-foot {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  padding-top: 18px; border-top: 1px solid var(--border); margin-top: 6px;
}

/* ── the four depths ─────────────────────────────────────────────────
   The container owns the top hairline. The rows own their own bottom one.
   One owner per rule, or it renders 2px. */
.depths { margin-top: 52px; border-top: 1px solid var(--border); }
.depth-row {
  width: 100%; text-align: left; display: flex; align-items: baseline; gap: 16px;
  padding: 18px 4px; background: transparent; border: 0;
  border-bottom: 1px solid var(--border-light); transition: background 0.15s;
}
.depth-row:hover { background: var(--bg2); }
.depth-num {
  font-family: var(--font-mono); font-size: 12px; color: var(--accent); min-width: 24px;
}
.depth-label { font-size: 17px; font-weight: 600; color: var(--text); flex: 1; }
.depth-meta { font-family: var(--font-mono); font-size: 12px; color: var(--text-dim); }
/* Depth 04 before the gate: present, dimmed, and not a button. */
.depth-row.locked { cursor: default; }
.depth-row.locked:hover { background: transparent; }
.depth-row.locked .depth-num,
.depth-row.locked .depth-label { color: var(--text-dim); }

.section { margin-top: 64px; }
.section-divider {
  display: flex; align-items: center; gap: 16px; margin-bottom: 20px;
}
.section-divider span {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--text-dim);
}
.section-divider::after { content: ""; flex: 1; height: 1px; background: var(--border); }

/* ── depth 01 ───────────────────────────────────────────────────────── */
.reasons { display: flex; flex-direction: column; gap: 18px; max-width: var(--read); }
.reason { display: flex; gap: 14px; }
.reason .arrow { font-family: var(--font-mono); color: var(--accent); }
.reason p { font-size: 16px; line-height: 1.75; color: var(--text-muted); }

/* ── depth 02 scorecard ─────────────────────────────────────────────── */
.score-counts { font-family: var(--font-mono); font-size: 11px; color: var(--text-dim); margin-bottom: 14px; }
.scorecard {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1px; background: var(--border-light);
  border: 1px solid var(--border-light); border-radius: var(--radius); overflow: hidden;
}
.cell { background: var(--bg2); padding: 18px 20px; }
.cell-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.verdict {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase; flex: none;
}
.verdict.pass { color: var(--accent-teal); }
.verdict.gap { color: var(--accent-orange); }
.verdict.unknown { color: var(--text-dim); border-bottom: 1px dashed var(--text-dim); }
.cell-title { font-size: 15px; font-weight: 600; color: var(--text); }
/* Unknown is a third tier of confidence, so its title is one step back. */
.cell.is-unknown .cell-title { color: var(--text-muted); }
.cell-body { font-size: 14px; line-height: 1.6; color: var(--text-dim); margin-top: 8px; }
.cell-evidence {
  font-family: var(--font-mono); font-size: 12px; color: var(--text-dim);
  margin-top: 8px; word-break: break-word;
}
.score-note {
  font-size: 13px; line-height: 1.7; color: var(--text-dim);
  margin-top: 14px; max-width: 640px;
}
.score-note .tag {
  font-family: var(--font-mono); border-bottom: 1px dashed var(--text-dim);
}

/* ── depth 03 contract ──────────────────────────────────────────────
   auto-fit columns, independent group heights. Groups hold 3/4/5/3/2/2/2
   fields; a shared baseline would be wrong for five of the seven. */
.legend-dots { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 24px; }
.legend-dot {
  display: flex; align-items: center; gap: 7px;
  font-family: var(--font-mono); font-size: 11px; color: var(--text-dim);
}
.dot-stated { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); flex: none; }
.dot-inferred { width: 8px; height: 8px; border-radius: 50%; border: 1px solid var(--text-dim); flex: none; }

.contract-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px; align-items: start;
}
.group-name {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--accent);
  padding-bottom: 10px; border-bottom: 1px solid var(--border-light);
}
.field-row {
  width: 100%; text-align: left; display: flex; align-items: baseline; gap: 12px;
  padding: 11px 2px; background: transparent; border: 0;
  border-bottom: 1px solid var(--border-light); transition: background 0.15s;
}
.field-row:hover { background: var(--bg2); }
.field-key { font-family: var(--font-mono); font-size: 12px; color: var(--text-dim); min-width: 116px; }
.field-value { font-size: 14px; color: var(--text); }
.field-row.inferred .field-value { color: var(--text-dim); font-style: italic; }
/* A field with no closed domain gets no picker. The caret is the tell. */
.field-kind { font-family: var(--font-mono); font-size: 11px; color: var(--text-dim); }
.field-dot { flex: none; }

.picker {
  display: flex; flex-wrap: wrap; gap: 6px;
  padding: 10px 2px 14px; border-bottom: 1px solid var(--border-light);
}
.picker-opt {
  font-size: 13px; padding: 5px 10px; border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--bg); color: var(--text-muted);
  transition: color 0.15s, border-color 0.15s;
}
.picker-opt:hover { color: var(--accent); border-color: var(--accent); }
.picker-opt.on { color: var(--accent); border-color: var(--accent); }
.picker-note { font-size: 13px; line-height: 1.6; color: var(--text-dim); padding: 10px 2px 14px;
  border-bottom: 1px solid var(--border-light); }

/* The eleven fields with no closed domain get a typed editor rather than a
   picker. Same border-bottom rhythm as .picker so a section reads as one
   list whichever kind of field the writer opened. */
.field-editor {
  display: flex; flex-direction: column; gap: 8px;
  padding: 10px 2px 14px; border-bottom: 1px solid var(--border-light);
}
.field-q { font-size: 13px; line-height: 1.5; color: var(--text-muted); }
.field-note { font-size: 12px; line-height: 1.5; color: var(--text-dim); }
.field-input {
  width: 100%; font-family: var(--font-sans); font-size: 14px;
  padding: 8px 10px; border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--bg); color: var(--text);
}
.field-input:focus { outline: none; border-color: var(--accent); }
textarea.field-input { font-family: var(--font-mono); font-size: 13px; resize: vertical; }
.field-actions { display: flex; gap: 8px; }
.field-actions .btn { padding: 6px 14px; font-size: 13px; }

/* ── question card ──────────────────────────────────────────────────── */
.questions { margin-top: 64px; max-width: 720px; }
.qcard {
  border: 1px solid var(--border); border-left: 2px solid var(--accent);
  border-radius: var(--radius); background: var(--bg2); padding: 26px;
  display: flex; flex-direction: column; gap: 12px;
}
.qcard.done { border-left-color: var(--accent-teal); }
.qcard h3 { font-size: 22px; font-weight: 600; line-height: 1.3; }
.qdecides { font-size: 14px; line-height: 1.6; color: var(--text-dim); }
.qoptions { display: flex; flex-direction: column; gap: 8px; margin-top: 10px; }
.qoption {
  text-align: left; padding: 13px 16px; border: 1px solid var(--border);
  border-radius: var(--radius); background: var(--bg); color: var(--text-muted);
  font-size: 15px; transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.qoption:hover { border-color: var(--accent); color: var(--accent); background: var(--bg3); }
.qlink {
  align-self: flex-start; background: transparent; border: 0; padding: 0;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.04em;
  color: var(--text-dim); margin-top: 8px; transition: color 0.15s;
}
.qlink:hover { color: var(--accent); }
.qcard-flat {
  border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg2);
  padding: 22px; display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}
.qcard-flat span { font-size: 15px; color: var(--text-muted); }
.qcard-flat .qlink { margin-top: 0; color: var(--accent); }
.mono-teal {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--accent-teal);
}

/* ── transform gate ─────────────────────────────────────────────────── */
.gate { margin-top: 72px; max-width: var(--read); }
.gate p { font-size: 17px; line-height: 1.7; color: var(--text-muted); }
.gate-actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-top: 24px; }

/* ── located changes ────────────────────────────────────────────────── */
.transform { margin-top: 72px; }
.marker-legend { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin-bottom: 12px; }
.legend-item {
  display: flex; align-items: center; gap: 7px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.04em; color: var(--text-dim);
}
.legend-item .rule-solid { width: 14px; border-bottom: 2px solid var(--accent); }
.legend-item .rule-dash { width: 14px; border-bottom: 1px dashed var(--accent-purple); }
.legend-item .rule-cut { width: 14px; border-bottom: 1px solid var(--text-dim); text-decoration: line-through; }
.legend-item.blocked { color: var(--accent-orange); }

.two-pane {
  display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: 28px; align-items: start;
}
.draft-card {
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg2); padding: 34px 38px; min-width: 0;
}
.draft-head {
  display: flex; align-items: baseline; gap: 16px; flex-wrap: wrap;
  padding-bottom: 16px; border-bottom: 1px solid var(--border-light); margin-bottom: 26px;
}
.view-toggle {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.06em;
  text-transform: uppercase; background: transparent; border: 0; padding: 0;
  color: var(--text-dim); transition: color 0.15s;
}
.view-toggle:hover, .view-toggle.on { color: var(--accent); }
.view-sep { color: var(--border); }
.view-label { font-family: var(--font-mono); font-size: 11px; color: var(--accent); }

.draft-original {
  margin: 0; white-space: pre-wrap; font-family: var(--font-mono);
  font-size: 13px; line-height: 1.85; color: var(--text-muted);
}
.draft-prose {
  display: flex; flex-direction: column; gap: 18px;
  font-size: 16px; line-height: 1.9; color: var(--text-muted);
}

/* Markers sit in the baseline: inherit the font, carry no background. */
.mk { background: transparent; border: 0; padding: 0; font: inherit; transition: color 0.15s; }
.mk-revise { color: var(--text-muted); border-bottom: 2px solid var(--accent); }
.mk-revise:hover { color: var(--accent); }
.mk-move { color: var(--accent-purple); border-bottom: 1px dashed var(--accent-purple); }
.mk-move:hover { color: var(--accent); }
.mk-cut { color: var(--text-dim); text-decoration: line-through; }
.mk-cut:hover { color: var(--accent-orange); }
.mk-insert {
  display: block; text-align: left; width: 100%;
  border-left: 2px solid var(--accent); padding: 2px 0 2px 12px;
  font-family: var(--font-mono); font-size: 12px; color: var(--accent);
}
.mk-insert:hover { color: var(--accent-hover); }

.protected {
  background: var(--tint-study); border-bottom: 1px solid var(--accent-teal);
  padding: 1px 1px 1px 2px;
}

/* The annotation steps *down* to --bg, so it reads as inset in the card. */
.annotation {
  margin: 8px 0 4px 12px; border-left: 2px solid var(--accent);
  background: var(--bg); padding: 12px 14px;
  font-size: 14px; line-height: 1.7; color: var(--text-muted);
}
.annotation.move { border-left-color: var(--accent-purple); }
.annotation.cut { border-left-color: var(--border); }
.ann-label {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--accent); display: block;
}
.annotation.move .ann-label { color: var(--accent-purple); }
.annotation.cut .ann-label { color: var(--text-dim); }
.ann-body { margin-top: 6px; }
/* A gap that folded into this edit rather than getting its own marker. */
.ann-also {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.04em;
  color: var(--text-dim); margin-top: 10px; display: block;
}

.blocked-block {
  border: 1px solid var(--accent-orange); border-radius: var(--radius);
  background: var(--bg); padding: 14px 16px;
}
.blocked-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.blocked-tag {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--accent-orange);
}
.blocked-sub { font-family: var(--font-mono); font-size: 11px; color: var(--text-dim); }
.blocked-block p { font-size: 14px; line-height: 1.7; color: var(--text-muted); margin-top: 10px; }
.blocked-span {
  font-family: var(--font-mono); font-size: 13px;
  background: var(--tint-study); padding: 1px 4px;
}
/* Kept is the writer's decision standing, not an unresolved conflict — it
   steps back from orange to the ordinary border so the panel stops asking
   for attention while the edit itself stays on the page. */
.blocked-block.kept { border-color: var(--border); }
.blocked-block.kept .blocked-tag { color: var(--text-dim); }
.blocked-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 14px; }
.blocked-actions .btn { padding: 9px 16px; }

/* ── the gutter ─────────────────────────────────────────────────────── */
.gutter { position: sticky; top: 84px; display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.gutter-head {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--text-dim);
  padding-bottom: 10px; border-bottom: 1px solid var(--border);
}
.change-row {
  text-align: left; display: flex; gap: 12px; align-items: baseline;
  padding: 12px 14px; border: 1px solid var(--border-light);
  border-radius: var(--radius); background: var(--bg2);
  transition: background 0.15s, border-color 0.15s;
}
.change-row:hover, .change-row.on { background: var(--bg3); border-color: var(--accent); }
.change-kind {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.06em;
  text-transform: uppercase; min-width: 58px; color: var(--text-dim);
}
.change-summary { font-size: 14px; line-height: 1.55; color: var(--text-muted); flex: 1; }
.change-plus { font-family: var(--font-mono); font-size: 11px; color: var(--text-dim); }
.change-at { font-family: var(--font-mono); font-size: 11px; color: var(--text-dim); }
.gutter-note { font-size: 13px; line-height: 1.7; color: var(--text-dim); margin-top: 6px; }

/* Gaps that produced no edit. Not an error: no orange, no left border.
   The engine declining to invent an edit reads as completeness. */
.no-edit { margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--border); }
.no-edit-label {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--text-dim);
}
.no-edit-row { font-size: 13px; line-height: 1.7; color: var(--text-dim); margin-top: 10px; }
.no-edit-row b { color: var(--text-muted); font-weight: 500; }

.notice {
  border: 1px solid var(--border); border-left: 2px solid var(--accent-orange);
  border-radius: var(--radius); background: var(--bg2); padding: 18px 20px;
  font-size: 15px; line-height: 1.7; color: var(--text-muted); max-width: var(--read);
}

@media (max-width: 900px) {
  .two-pane { grid-template-columns: 1fr; }
  .gutter { position: static; }
  .draft-card { padding: 24px 22px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition-duration: 0.01ms !important; }
}