/* ═══════════════════════════════════════════════════════════════
   BRIEFING OVERLAY — Intelligence briefing signal feed
   ═══════════════════════════════════════════════════════════════ */

.briefing-overlay {
  position: fixed;
  top: var(--chrome-h, 48px);   /* below the topbar + tabs strip */
  left: var(--sidebar-w, 0);
  right: 0;
  bottom: 0;
  z-index: 999;    /* just below topbar's 1000 */
  background: var(--bg-primary, #080B0F);
  overflow-y: auto;
  transition: opacity 0.2s ease-out, transform 0.2s ease-out;
}
.briefing-overlay.hidden {
  display: none;
}

.briefing-container {
  max-width: 860px;
  margin: 0 auto;
  padding: 16px 20px 60px;
}

/* Header */
.briefing-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg-primary, #080B0F);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border, #1E2A35);
  margin-bottom: 20px;
}

.briefing-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.briefing-title-row h2 {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 20px;
  margin: 0;
  color: var(--text-primary, #E8F0F7);
}

.bf-close-btn {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 18px;
  font-weight: 400;
  line-height: 1;
  color: var(--text-muted, #3D5A70);
  background: transparent;
  border: none;
  border-radius: 4px;
  padding: 6px 10px;
  cursor: pointer;
  transition: all 0.12s;
  flex-shrink: 0;
}
.bf-close-btn:hover {
  color: var(--text-primary, #E8F0F7);
  background: var(--bg-secondary, #0D1117);
}

.briefing-meta {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--text-muted, #3D5A70);
  margin-top: 4px;
}

/* Summary pills */
.signal-summary-bar {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}
.pill {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 6px;
  letter-spacing: 0.02em;
}
.pill-urgent {
  background: rgba(255, 59, 92, 0.15);
  color: #FF3B5C;
  border: 1px solid rgba(255, 59, 92, 0.3);
}
.pill-watch {
  background: rgba(255, 215, 0, 0.12);
  color: #FFD700;
  border: 1px solid rgba(255, 215, 0, 0.25);
}
.pill-info {
  background: rgba(0, 212, 255, 0.1);
  color: #00D4FF;
  border: 1px solid rgba(0, 212, 255, 0.2);
}

/* Filters */
.briefing-filters {
  display: flex;
  gap: 8px;
  margin-top: 14px;
  flex-wrap: wrap;
}
.briefing-filters select {
  background: var(--bg-secondary, #0D1117);
  color: var(--text-primary, #E8F0F7);
  border: 1px solid var(--border, #1E2A35);
  border-radius: 6px;
  padding: 6px 10px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  cursor: pointer;
  min-width: 140px;
}
.briefing-filters select:focus {
  border-color: var(--accent-primary, #00D4FF);
  outline: none;
}
.briefing-filters .ghost {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  padding: 6px 14px;
}

/* Signal feed */
.signal-feed {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.signal-card {
  background: var(--bg-card, #111820);
  border: 1px solid var(--border, #1E2A35);
  border-radius: 8px;
  padding: 16px 18px;
  transition: border-color 0.15s;
  cursor: default;
}
.signal-card:hover {
  border-color: var(--text-muted, #3D5A70);
}

.signal-card.severity-urgent {
  border-left: 3px solid #FF3B5C;
}
.signal-card.severity-watch {
  border-left: 3px solid #FFD700;
}
.signal-card.severity-informational {
  border-left: 3px solid #00D4FF;
}

.signal-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.signal-badge {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 3px 8px;
  border-radius: 4px;
  white-space: nowrap;
  flex-shrink: 0;
}
.badge-urgent {
  background: rgba(255, 59, 92, 0.2);
  color: #FF3B5C;
}
.badge-watch {
  background: rgba(255, 215, 0, 0.15);
  color: #FFD700;
}
.badge-informational {
  background: rgba(0, 212, 255, 0.12);
  color: #00D4FF;
}

.signal-score {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--text-muted, #3D5A70);
  white-space: nowrap;
}

.signal-title {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary, #E8F0F7);
  line-height: 1.4;
  flex: 1;
}

.signal-body {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--text-secondary, #7A9BB5);
  line-height: 1.5;
  margin-bottom: 10px;
}

.signal-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.signal-tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  color: var(--text-muted, #3D5A70);
  background: var(--bg-secondary, #0D1117);
  padding: 2px 8px;
  border-radius: 3px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.signal-tag.tag-category { color: var(--accent-primary, #00D4FF); }
.signal-tag.tag-region { color: var(--accent-green, #00FF8C); }
.signal-tag.tag-commodity { color: var(--accent-energy, #FF6B35); }

.signal-map-link {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  color: var(--accent-primary, #00D4FF);
  text-decoration: none;
  cursor: pointer;
  padding: 2px 8px;
  border-radius: 3px;
  background: rgba(0, 212, 255, 0.08);
  transition: background 0.15s;
}
.signal-map-link:hover {
  background: rgba(0, 212, 255, 0.18);
}

.signal-time {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  color: var(--text-muted, #3D5A70);
  margin-left: auto;
}

/* Supporting data (expandable) */
.signal-data-toggle {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 10px;
  color: var(--text-muted, #3D5A70);
  cursor: pointer;
  border: none;
  background: none;
  padding: 2px 0;
  margin-top: 6px;
}
.signal-data-toggle:hover {
  color: var(--text-secondary, #7A9BB5);
}
.signal-supporting-data {
  display: none;
  margin-top: 8px;
  padding: 10px 12px;
  background: var(--bg-primary, #080B0F);
  border-radius: 6px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--text-secondary, #7A9BB5);
  line-height: 1.6;
  white-space: pre-wrap;
}
.signal-supporting-data.open {
  display: block;
}

/* Empty state */
.signal-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted, #3D5A70);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 14px;
}
.signal-empty .empty-icon {
  font-size: 32px;
  display: block;
  margin-bottom: 12px;
  opacity: 0.4;
}

/* Load more button */
.bf-load-more {
  display: block;
  width: 100%;
  padding: 14px;
  margin-top: 4px;
  background: var(--bg-secondary, #0D1117);
  color: var(--accent-primary, #00D4FF);
  border: 1px dashed var(--border, #1E2A35);
  border-radius: 8px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.bf-load-more:hover {
  background: var(--bg-card, #111820);
  border-color: var(--accent-primary, #00D4FF);
}

/* New signals banner */
.bf-new-banner {
  position: sticky;
  top: 0;
  z-index: 5;
  padding: 10px 16px;
  background: rgba(0, 212, 255, 0.12);
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: 8px;
  color: var(--accent-primary, #00D4FF);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: background 0.15s;
  animation: bf-banner-slide 0.3s ease-out;
}
.bf-new-banner:hover {
  background: rgba(0, 212, 255, 0.2);
}
@keyframes bf-banner-slide {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Light theme overrides */
[data-theme="light"] .briefing-overlay {
  background: var(--bg-primary, #F4F7FB);
}
[data-theme="light"] .briefing-header {
  background: var(--bg-primary, #F4F7FB);
}
[data-theme="light"] .signal-card {
  background: #fff;
}

/* Responsive */
@media (max-width: 640px) {
  .briefing-container {
    padding: 16px 12px 40px;
  }
  .briefing-filters {
    flex-direction: column;
  }
  .briefing-filters select {
    min-width: unset;
    width: 100%;
  }
  .signal-card-header {
    flex-direction: column;
  }
}