/* ────────────────────────────────────────────────────────────────
 * Matter "Case brief" — Phase 3 (re-arch brief §5)
 * ────────────────────────────────────────────────────────────────
 * Progressive case-brief panel above #matter-glance-panel. Seven
 * section cards stacked vertically. Each card has its own
 * generate / accept / regenerate lifecycle.
 */

#matter-brief-panel {
  margin-bottom: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

#matter-brief-panel:empty { display: none; }

.brief-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 0 0.25rem;
}
.brief-title {
  font-family: var(--font-serif, 'EB Garamond', serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
}
.brief-subtitle {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 0.1rem;
}
.brief-meta {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  background: var(--bg-muted);
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
}

.brief-cards {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

/* ── Card chrome ── */
.brief-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 0.7rem 0.9rem 0.65rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.brief-card[data-status="generating"] {
  border-color: var(--gold, #d9a541);
  box-shadow: 0 0 0 3px rgba(217, 165, 65, 0.08);
}
.brief-card[data-status="accepted"] {
  background: linear-gradient(0deg, rgba(58, 145, 90, 0.04), rgba(58, 145, 90, 0.04)), var(--white);
  border-color: rgba(58, 145, 90, 0.28);
}
.brief-card[data-status="failed"] {
  background: linear-gradient(0deg, rgba(200, 40, 40, 0.04), rgba(200, 40, 40, 0.04)), var(--white);
  border-color: rgba(200, 40, 40, 0.28);
}

.brief-card-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}
.brief-card-title-wrap {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.brief-card-title {
  font-family: var(--font-serif, 'EB Garamond', serif);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.01em;
}
.brief-card-position {
  font-size: 0.66rem;
  color: var(--text-muted);
  background: var(--bg-muted);
  padding: 0.1rem 0.4rem;
  border-radius: 999px;
  text-transform: lowercase;
}
.brief-card-position.warn {
  color: #8a5a1f;
  background: rgba(217, 165, 65, 0.12);
}
.brief-card-status {
  font-size: 0.66rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  padding: 0.12rem 0.5rem;
  border-radius: 999px;
  background: var(--bg-muted);
  white-space: nowrap;
}
.brief-card-status.status-ready    { color: #8a5a1f; background: rgba(217, 165, 65, 0.14); }
.brief-card-status.status-generating { color: #8a5a1f; background: rgba(217, 165, 65, 0.18); }
.brief-card-status.status-accepted { color: #2f6b46; background: rgba(58, 145, 90, 0.14); }
.brief-card-status.status-failed   { color: #8a2828; background: rgba(200, 40, 40, 0.12); }
.brief-card-status.status-rejected { color: var(--text-muted); }

/* ── Body ── */
.brief-card-body {
  font-size: 0.82rem;
  line-height: 1.45;
  color: var(--text);
}
.brief-card-empty,
.brief-card-dismissed {
  font-size: 0.78rem;
  color: var(--text-muted);
  padding: 0.5rem 0;
}
.brief-card-generating {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  color: var(--text-muted);
  padding: 0.4rem 0;
}
.brief-card-error {
  font-size: 0.78rem;
  color: #8a2828;
  background: rgba(200, 40, 40, 0.06);
  border-radius: var(--r-sm, 6px);
  padding: 0.5rem 0.6rem;
  margin-bottom: 0.4rem;
}
.brief-summary {
  margin: 0 0 0.55rem;
  color: var(--text);
  font-size: 0.82rem;
}
.brief-subhead {
  margin: 0.6rem 0 0.3rem;
  font-family: var(--font-serif, 'EB Garamond', serif);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text);
}

/* Generic lists */
.brief-list,
.brief-sublist {
  margin: 0;
  padding-left: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.brief-sublist {
  margin-top: 0.2rem;
  gap: 0.15rem;
  padding-left: 1rem;
  font-size: 0.78rem;
  color: var(--text-muted);
}
.brief-list > li { padding-left: 0.1rem; }

.brief-tag {
  font-style: normal;
  font-size: 0.66rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  background: var(--bg-muted);
  padding: 0.05rem 0.4rem;
  border-radius: 999px;
  margin-left: 0.25rem;
}

/* ── Chronology ── */
.brief-event-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.brief-event {
  display: grid;
  grid-template-columns: 6rem 1fr;
  gap: 0.5rem;
  align-items: baseline;
}
.brief-event-date {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: var(--text);
  font-size: 0.74rem;
}
.brief-event-body { min-width: 0; }

/* ── Risks ── */
.brief-risk,
.brief-missing,
.brief-step {
  display: grid;
  grid-template-columns: 4.4rem 1fr;
  gap: 0.5rem;
  align-items: baseline;
}
.brief-severity,
.brief-urgency,
.brief-priority {
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  text-align: center;
  background: var(--bg-muted);
  color: var(--text-muted);
}
.brief-severity.sev-high,
.brief-urgency.urg-blocker,
.brief-priority.pri-urgent {
  background: rgba(200, 40, 40, 0.12);
  color: #8a2828;
}
.brief-severity.sev-medium,
.brief-urgency.urg-soon,
.brief-priority.pri-high {
  background: rgba(217, 165, 65, 0.16);
  color: #8a5a1f;
}
.brief-severity.sev-low,
.brief-urgency.urg-nice_to_have,
.brief-priority.pri-normal {
  background: rgba(58, 145, 90, 0.12);
  color: #2f6b46;
}
.brief-risk-why,
.brief-missing-why,
.brief-step-rationale {
  font-size: 0.76rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}
.brief-risk-mit {
  font-size: 0.76rem;
  color: var(--text);
  margin-top: 0.2rem;
}
.brief-mit-label {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-right: 0.25rem;
}
.brief-step-deadline {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

/* ── Source-ref chips ── */
.brief-src-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin-top: 0.3rem;
}
.brief-src {
  border: 1px solid var(--border);
  background: var(--white);
  color: var(--text-muted);
  font-size: 0.66rem;
  font-weight: 500;
  padding: 0.1rem 0.45rem;
  border-radius: 999px;
  cursor: pointer;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
}
.brief-src:hover {
  background: var(--gold-soft, #f3e8c4);
  color: var(--gold-dark, #8a6b1f);
  border-color: var(--gold, #d9a541);
}
.brief-src-more {
  font-size: 0.66rem;
  color: var(--text-muted);
  font-style: italic;
  align-self: center;
}

/* ── Footer ── */
.brief-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-top: 0.6rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
}
.brief-card-regen {
  font-size: 0.66rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}
.brief-card-actions {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
  margin-left: auto;
}
.btn-brief {
  border: 1px solid var(--border);
  background: var(--white);
  color: var(--text);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
}
.btn-brief:hover:not(:disabled) {
  background: var(--bg-muted);
}
.btn-brief.primary {
  background: var(--gold, #d9a541);
  border-color: var(--gold, #d9a541);
  color: var(--text);
}
.btn-brief.primary:hover:not(:disabled) {
  background: var(--gold-dark, #b88a1f);
  border-color: var(--gold-dark, #b88a1f);
  color: var(--white);
}
.btn-brief.subtle {
  color: var(--text-muted);
  border-color: transparent;
}
.btn-brief.subtle:hover:not(:disabled) {
  color: var(--text);
}
.btn-brief:disabled {
  opacity: 0.6;
  cursor: progress;
}

/* ── Spinner ── */
.brief-spinner {
  width: 0.85rem;
  height: 0.85rem;
  border-radius: 50%;
  border: 2px solid var(--border);
  border-top-color: var(--gold, #d9a541);
  display: inline-block;
  animation: brief-spin 0.8s linear infinite;
}
@keyframes brief-spin {
  to { transform: rotate(360deg); }
}

/* ── Loading + responsive ── */
.brief-loading {
  font-size: 0.75rem;
  color: var(--text-muted);
  padding: 0.5rem 0;
}

@media (max-width: 720px) {
  .brief-event {
    grid-template-columns: 5rem 1fr;
  }
  .brief-risk,
  .brief-missing,
  .brief-step {
    grid-template-columns: 1fr;
  }
  .brief-card-actions {
    margin-left: 0;
    width: 100%;
  }
}