/* Detail-view modal + card renderers. Used by library pages and by the
   chat "Open" buttons. Mobile-first with a centered panel on desktop. */

.dv-overlay {
  position: fixed;
  inset: 0;
  background: rgba(24, 22, 18, 0.45);
  backdrop-filter: blur(4px);
  z-index: 100;
  display: flex;
  align-items: stretch;
  justify-content: center;
  padding: 0;
  animation: dv-fade 0.18s ease-out;
}

@keyframes dv-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

.dv-panel {
  background: var(--bg-page);
  width: 100%;
  max-width: 720px;
  max-height: 100dvh;
  display: flex;
  flex-direction: column;
  border-radius: 0;
  overflow: hidden;
}

@media (min-width: 720px) {
  .dv-overlay {
    align-items: center;
    padding: 40px 20px;
  }
  .dv-panel {
    max-height: calc(100dvh - 80px);
    border-radius: 16px;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.25);
  }
}

.dv-header {
  flex-shrink: 0;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-default);
  background: var(--surface-elevated);
  display: flex;
  align-items: center;
  gap: 12px;
}

.dv-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dv-close {
  font-family: inherit;
  font-size: 18px;
  line-height: 1;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px 8px;
}
.dv-close:hover { color: var(--text-primary); }

.dv-body {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  -webkit-overflow-scrolling: touch;
}

.dv-meta {
  margin-bottom: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.dv-meta__kind {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--primary);
  font-weight: 600;
}
.dv-meta__desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0;
}

.dv-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.dv-loading, .dv-error {
  padding: 40px 20px;
  color: var(--text-muted);
  font-size: 14px;
  text-align: center;
}
.dv-error { color: var(--danger); }

/* ── Card base ──────────────────────────────────────────────────────── */

.dv-card {
  padding: 18px 20px;
  background: var(--surface-elevated);
  border: 1px solid var(--border-default);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.dv-card--focus {
  border-color: var(--primary);
  background: var(--primary-light);
  animation: dv-focus-flash 0.8s ease-out;
}
@keyframes dv-focus-flash {
  from { background: #B8E0D8; }
  to { background: var(--primary-light); }
}

.dv-card__tag {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--primary);
  font-weight: 600;
  text-transform: uppercase;
}

.dv-card__headline {
  font-size: 19px;
  line-height: 1.25;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
  letter-spacing: -0.015em;
}

.dv-card__body {
  font-size: 15px;
  line-height: 1.55;
  color: var(--text-secondary);
  margin: 0;
  white-space: pre-wrap;
}

.dv-card__sub {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

.dv-card__rule {
  font-size: 13px;
  color: var(--primary);
  font-weight: 500;
  line-height: 1.45;
  padding: 10px 12px;
  background: var(--primary-light);
  border-radius: 8px;
}

.dv-card--interactive {
  background: #FFF5E8;
  border-color: #E8D4B0;
}

.dv-card--fallback {
  opacity: 0.85;
}

/* ── Stages (label + what + sub) ──────────────────────────────────── */

.dv-stages {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 6px;
}
.dv-stage {
  padding: 10px 12px;
  background: var(--bg-page);
  border-radius: 10px;
  border: 1px solid var(--border-subtle);
}
.dv-stage__label {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--primary);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.dv-stage__what {
  font-size: 14px;
  color: var(--text-primary);
  line-height: 1.45;
}
.dv-stage__sub {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 3px;
}

/* ── Timeline ──────────────────────────────────────────────────────── */

.dv-timeline {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 6px;
}
.dv-timeline__row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--bg-page);
  border: 1px solid var(--border-subtle);
  font-size: 14px;
  line-height: 1.4;
}
.dv-timeline__row--peak {
  background: var(--primary-light);
  border-color: rgba(14, 122, 109, 0.3);
}
.dv-timeline__when {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 13px;
}
.dv-timeline__what { color: var(--text-secondary); }

/* ── 2x2 grid ──────────────────────────────────────────────────────── */

.dv-grid2x2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 6px;
}
.dv-grid2x2__cell {
  padding: 12px;
  background: var(--bg-page);
  border-radius: 10px;
  border: 1px solid var(--border-subtle);
  min-height: 80px;
}
.dv-grid2x2__title {
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.02em;
  margin-bottom: 4px;
}
.dv-grid2x2__text {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* ── Bullet list ──────────────────────────────────────────────────── */

.dv-bullets {
  margin: 4px 0 0;
  padding-left: 18px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.55;
}
.dv-bullets li { margin-bottom: 4px; }

/* ── Comparison ───────────────────────────────────────────────────── */

.dv-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 6px;
}
.dv-compare__side {
  padding: 12px;
  background: var(--bg-page);
  border-radius: 10px;
  border: 1px solid var(--border-subtle);
}
.dv-compare__label {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--primary);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.dv-compare__text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.45;
}