/* ============================================================
   INBOX WORKSPACE V2 (Phase 20) — reuses .dv-* + .mw-* + .dc-*
   patterns where semantically identical; adds .ib-* for new
   surfaces. Quiet + attention-only. Neutral surfaces. Semantic
   color only for genuine state.
   ============================================================ */

.ib-root { padding-inline: 24px; padding-block: 20px; max-width: 1440px; margin: 0 auto; }

/* Segmented control count */
.ib-seg-n {
  display: inline-block;
  padding: 1px 6px;
  margin-left: 6px;
  background: rgba(0,0,0,0.06);
  color: inherit;
  border-radius: var(--r-full);
  font: 700 10px/1 'JetBrains Mono', ui-monospace, monospace;
  opacity: 0.75;
}
.dv-seg-btn.active .ib-seg-n {
  background: rgba(255,255,255,0.15);
}

/* ============================================================
   TWO-COLUMN SPLIT — list + contextual preview
   ============================================================ */
.ib-split {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(340px, 1fr);
  gap: 16px;
  margin-top: 8px;
  align-items: flex-start;
}

.ib-list-col { display: flex; flex-direction: column; gap: 18px; min-width: 0; }
.ib-preview-col {
  position: sticky; top: 20px;
  min-width: 0;
}

.ib-note {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 14px;
  border-radius: var(--r-lg);
  background: var(--bg-app);
  color: var(--text-tertiary);
  font-size: 12px; letter-spacing: -0.015em;
}

/* Priority group header */
.ib-group { display: flex; flex-direction: column; gap: 8px; }
.ib-group-h {
  display: flex; align-items: baseline; gap: 8px;
  font: 700 11px/1 'Inter', system-ui;
  letter-spacing: 0.10em; text-transform: uppercase;
  color: var(--text-tertiary);
}
.ib-group-h .mono {
  color: var(--text-muted); font-size: 10px;
  padding: 2px 6px;
  background: var(--bg-app);
  border-radius: 4px;
}

/* ============================================================
   ROW — structured, portrait + action phrase + target title
   ============================================================ */
.ib-list { display: flex; flex-direction: column; gap: 4px; }
.ib-row {
  appearance: none; cursor: pointer; border: 0;
  display: flex; align-items: flex-start; gap: 12px;
  padding: 14px 16px;
  background: var(--bg-surface);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-widget);
  text-align: left;
  transition: transform 160ms, box-shadow 200ms, border-color 160ms;
  border-left: 3px solid transparent;
  width: 100%;
}
.ib-row:hover { transform: translateY(-1px); }
.ib-row.selected {
  border-left-color: var(--primary-01);
  box-shadow: var(--shadow-depth);
}
.ib-row.urgent {
  border-left-color: rgba(239,157,14,0.55);
}
.ib-row.selected.urgent {
  /* When both apply, urgent wins on the rail, but selection stays visible via shadow. */
  border-left-color: var(--primary-01);
}
.ib-row-dense { padding: 10px 12px; }

.ib-row-main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 4px; }
.ib-row-head {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--text-secondary);
  letter-spacing: -0.015em;
}
.ib-row-action b {
  color: var(--text-primary); font-weight: 600;
}
.ib-kind {
  padding: 2px 6px;
  background: var(--bg-app);
  color: var(--text-tertiary);
  border-radius: 5px;
  font-size: 10px; font-weight: 700;
  letter-spacing: 0.05em;
}
.ib-row-target {
  display: flex; align-items: center; gap: 6px;
  font-size: 15px; font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-top: 2px;
}
.ib-row-target > svg { color: var(--text-tertiary); flex: none; }
.ib-row-title { min-width: 0; }
.ib-row-note {
  font-size: 12px; color: var(--text-secondary);
  letter-spacing: -0.015em; line-height: 1.5;
  margin-top: 4px;
  max-width: 68ch;
}
.ib-row-context {
  display: flex; align-items: center; gap: 5px; flex-wrap: wrap;
  font-size: 11px; color: var(--text-tertiary);
  letter-spacing: -0.015em;
  margin-top: 4px;
}

.ib-row-side {
  display: flex; flex-direction: column; align-items: flex-end; gap: 6px;
  flex: none;
}
.ib-since {
  font-size: 11px; color: var(--text-muted);
  letter-spacing: -0.015em;
  white-space: nowrap;
}
.ib-row-open {
  display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 26px;
  border-radius: 999px;
  background: var(--bg-app);
  color: var(--text-tertiary);
  text-decoration: none;
  transition: background 160ms, color 160ms;
}
.ib-row-open:hover { background: var(--bg-depth); color: var(--text-primary); }

/* ============================================================
   PREVIEW PANEL
   ============================================================ */
.ib-preview {
  background: var(--bg-surface);
  border-radius: var(--r-3xl);
  box-shadow: var(--shadow-depth);
  padding: 22px 24px;
  display: flex; flex-direction: column; gap: 16px;
  min-height: 320px;
}
.ib-preview-empty {
  align-items: center; justify-content: center; text-align: center;
  gap: 8px;
}
.ib-preview-empty-icon {
  width: 44px; height: 44px; border-radius: 12px;
  background: var(--bg-app);
  color: var(--text-tertiary);
  display: flex; align-items: center; justify-content: center;
}
.ib-preview-empty-title {
  font-size: 15px; font-weight: 700; color: var(--text-primary);
  letter-spacing: -0.02em;
}
.ib-preview-empty-sub {
  font-size: 12px; color: var(--text-tertiary);
  letter-spacing: -0.015em;
  max-width: 40ch;
}

.ib-preview-head { display: flex; flex-direction: column; gap: 6px; }
.ib-preview-title {
  font-size: 20px; font-weight: 700; letter-spacing: -0.025em;
  color: var(--text-primary); line-height: 1.25;
  margin-top: 4px;
}
.ib-preview-who {
  display: flex; align-items: center; gap: 6px;
  font-size: 12px; color: var(--text-tertiary);
  letter-spacing: -0.015em;
  flex-wrap: wrap;
}
.ib-preview-who b { color: var(--text-primary); font-weight: 600; }

/* Canonical preview frame — reused for design / doc */
.ib-prev-frame {
  border-radius: var(--r-2xl);
  background:
    linear-gradient(rgba(0,0,0,0.02), rgba(0,0,0,0.02)),
    repeating-linear-gradient(
      45deg,
      var(--bg-highlight) 0 8px,
      var(--bg-app) 8px 16px
    );
  padding: 18px;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.ib-prev-inner {
  width: 100%; aspect-ratio: 16/10;
  background: white;
  border-radius: 10px;
  overflow: hidden;
  box-shadow:
    0 1px 0 rgba(255,255,255,0.9) inset,
    0 0 0 1px rgba(0,0,0,0.06),
    0 8px 24px rgba(0,0,0,0.08),
    0 24px 48px rgba(0,0,0,0.06);
}
.ib-prev-inner-doc { aspect-ratio: 4/3; max-width: 420px; }

/* Decision preview */
.ib-prev-decision, .ib-prev-milestone, .ib-prev-stage, .ib-prev-research, .ib-prev-work {
  border-radius: var(--r-2xl);
  background: var(--bg-highlight);
  border: 1px solid var(--stroke-subtle);
  padding: 18px 20px;
  display: flex; flex-direction: column; gap: 10px;
}
.ib-prev-decision-q {
  margin: 0;
  font-size: 17px; font-weight: 600; letter-spacing: -0.02em;
  color: var(--text-primary); line-height: 1.35;
}
.ib-prev-decision-facts {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
  padding-top: 8px; border-top: 1px solid var(--stroke-subtle);
}
.ib-prev-fact {
  display: flex; flex-direction: column; gap: 3px;
  font-size: 12px; color: var(--text-secondary);
  letter-spacing: -0.015em;
}
.ib-prev-fact b {
  color: var(--text-primary); font-weight: 600; font-size: 13px;
}

/* Contract milestone preview */
.ib-prev-ms-title {
  font-size: 17px; font-weight: 600; letter-spacing: -0.02em;
  color: var(--text-primary); line-height: 1.35;
}
.ib-prev-ms-body {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px;
  padding-top: 8px; border-top: 1px solid var(--stroke-subtle);
}
.ib-prev-ms-tile {
  display: flex; flex-direction: column; gap: 3px;
  font-size: 12px; color: var(--text-secondary);
  letter-spacing: -0.015em;
}
.ib-prev-ms-tile b {
  color: var(--text-primary); font-weight: 700; font-size: 15px;
}
.ib-prev-ms-tile span {
  font-size: 11px; color: var(--text-tertiary);
}

/* Stage preview */
.ib-prev-stage-title {
  display: flex; align-items: baseline; gap: 8px;
  font-size: 17px; font-weight: 700; letter-spacing: -0.02em;
  color: var(--text-primary);
}
.ib-prev-stage-title .mono {
  color: var(--text-tertiary); font-size: 13px;
}
.ib-prev-stage-bar {
  height: 6px; border-radius: 999px;
  background: var(--bg-depth); overflow: hidden;
}
.ib-prev-stage-fill {
  height: 100%; background: var(--primary-01);
  transition: width 400ms cubic-bezier(0.4,0,0.2,1);
}
.ib-prev-stage-facts {
  display: flex; align-items: center; gap: 5px;
  font-size: 12px; color: var(--text-tertiary);
  letter-spacing: -0.015em;
}
.ib-prev-stage-facts .mono {
  color: var(--text-primary); font-weight: 700; font-size: 14px;
}

/* Research + Work previews */
.ib-prev-research-title, .ib-prev-work-title {
  font-size: 16px; font-weight: 600; letter-spacing: -0.02em;
  color: var(--text-primary); line-height: 1.35;
}
.ib-prev-research-q, .ib-prev-work-outcome {
  margin: 0;
  font-family: Georgia, serif; font-style: italic;
  font-size: 14px; color: var(--text-secondary);
  letter-spacing: -0.015em; line-height: 1.55;
}
.ib-prev-research-facts {
  display: flex; align-items: center; gap: 5px;
  font-size: 11px; color: var(--text-tertiary);
  letter-spacing: -0.015em;
}

/* Note + blocks + after-response */
.ib-preview-note, .ib-preview-blocks, .ib-preview-after {
  display: flex; flex-direction: column; gap: 4px;
  padding: 12px 14px;
  border-radius: var(--r-lg);
  background: var(--bg-app);
  font-size: 13px; color: var(--text-primary);
  letter-spacing: -0.015em; line-height: 1.55;
}
.ib-preview-note p { margin: 0; }
.ib-preview-blocks {
  background: rgba(255,56,28,0.05);
  border: 1px solid rgba(255,56,28,0.18);
  color: rgba(180,40,15,0.90);
}
.ib-preview-after {
  background: rgba(42,133,255,0.05);
  border: 1px solid rgba(42,133,255,0.18);
  color: rgba(20,80,200,0.90);
}

/* Actions */
.ib-preview-actions {
  display: flex; gap: 8px; flex-wrap: wrap;
  padding-top: 8px;
  border-top: 1px solid var(--stroke-subtle);
}

/* ============================================================
   HISTORY
   ============================================================ */
.ib-history { display: flex; flex-direction: column; gap: 10px; margin-top: 8px; }
.ib-history-list { gap: 4px; }
.ib-history-row {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 14px;
  background: var(--bg-surface);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-widget);
  text-decoration: none;
  transition: transform 160ms;
  opacity: 0.9;
}
.ib-history-row:hover { transform: translateY(-1px); opacity: 1; }
.ib-history-check {
  width: 22px; height: 22px; border-radius: 6px;
  background: rgba(0,166,86,0.10);
  color: #009050;
  display: flex; align-items: center; justify-content: center;
  flex: none;
}
.ib-history-body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.ib-history-head {
  display: flex; align-items: center; gap: 8px;
  font-size: 12px; color: var(--text-tertiary);
  letter-spacing: -0.015em;
}
.ib-history-resolution {
  color: rgba(0,120,60,0.90); font-weight: 600;
}
.ib-history-title {
  font-size: 14px; font-weight: 600; color: var(--text-primary);
  letter-spacing: -0.015em;
}
.ib-history-sub {
  display: flex; align-items: center; gap: 5px; flex-wrap: wrap;
  font-size: 11px; color: var(--text-tertiary);
  letter-spacing: -0.015em;
}

/* ============================================================
   EMPTY STATE — quiet, mature
   ============================================================ */
.ib-empty-caught {
  padding: 60px 20px 80px;
  display: flex; flex-direction: column; align-items: center;
  gap: 8px;
  background: var(--bg-surface);
  border-radius: var(--r-3xl);
  box-shadow: var(--shadow-widget);
  margin-top: 8px;
  text-align: center;
}
.ib-empty-mark {
  width: 44px; height: 44px; border-radius: 999px;
  background: rgba(0,166,86,0.10);
  color: #009050;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 8px;
}
.ib-empty-h {
  font-size: 22px; font-weight: 700; letter-spacing: -0.025em;
  color: var(--text-primary);
}
.ib-empty-sub {
  font-size: 13px; color: var(--text-tertiary);
  letter-spacing: -0.015em;
  max-width: 40ch;
}
.ib-empty-actions {
  display: flex; gap: 8px; margin-top: 12px;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1200px) {
  .ib-split { grid-template-columns: 1fr; }
  .ib-preview-col { position: static; }
  .ib-prev-decision-facts { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 820px) {
  .ib-row-side { display: none; }
  .ib-prev-decision-facts { grid-template-columns: 1fr; }
  .ib-prev-ms-body { grid-template-columns: 1fr; }
}