/* ════════════════════════════════════════════════════════════════
   TIMELINE MODAL — Legal Tech Professional Edition
   Matching Enrichment Modal Design System
   Minimalist • Enterprise • Premium
   ════════════════════════════════════════════════════════════════ */

/* === CSS Variables === */
.tl-overlay {
  --tl-bg: #ffffff;
  --tl-bg-secondary: #fdfdfd;
  --tl-border: #e5e5e5;
  --tl-border-focus: #111111;
  --tl-text-primary: #111111;
  --tl-text-secondary: #666666;
  --tl-text-muted: #999999;
  --tl-accent: #b49b67;
  --tl-accent-light: rgba(180, 155, 103, 0.1);
  --tl-success: #10b981;
  --tl-error: #c53030;
  --tl-warning: #f59e0b;
  --tl-radius: 8px;
  --tl-radius-lg: 12px;
  --tl-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  --tl-shadow-lg: 0 4px 20px rgba(0, 0, 0, 0.08);
  --tl-transition: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ════════════════════════════════════════════════════════════════
   OVERLAY
   ════════════════════════════════════════════════════════════════ */

.tl-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 99999;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s var(--tl-transition);
}

.tl-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* ════════════════════════════════════════════════════════════════
   MODAL CARD
   ════════════════════════════════════════════════════════════════ */

.tl-modal-card {
  width: 100%;
  max-width: 860px;
  height: 85vh;
  max-height: 820px;
  background: var(--tl-bg);
  border: 1px solid var(--tl-border);
  border-radius: var(--tl-radius-lg);
  box-shadow: var(--tl-shadow-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.98) translateY(8px);
  animation: tlModalIn 0.3s var(--tl-transition) forwards;
}

@keyframes tlModalIn {
  to {
    transform: scale(1) translateY(0);
  }
}

/* ════════════════════════════════════════════════════════════════
   HEADER
   ════════════════════════════════════════════════════════════════ */

.tl-header {
  height: 68px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--tl-border);
  flex-shrink: 0;
}

.tl-header-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.tl-icon-box {
  width: 40px;
  height: 40px;
  background: var(--tl-text-primary);
  color: white;
  border-radius: var(--tl-radius);
  display: flex;
  align-items: center;
  justify-content: center;
}

.tl-header-text h2 {
  font-size: 15px;
  font-weight: 600;
  margin: 0;
  color: var(--tl-text-primary);
  letter-spacing: -0.01em;
}

.tl-header-text span {
  font-size: 12px;
  color: var(--tl-text-muted);
}

.tl-header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Close Button */
.tl-close-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--tl-radius);
  border: 1px solid var(--tl-border);
  background: transparent;
  color: var(--tl-text-secondary);
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tl-close-btn:hover {
  background: var(--tl-bg-secondary);
  color: var(--tl-text-primary);
  border-color: var(--tl-text-primary);
}

/* ════════════════════════════════════════════════════════════════
   EXPORT DROPDOWN
   ════════════════════════════════════════════════════════════════ */

.tl-export-dropdown {
  position: relative;
}

.tl-btn-action {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: transparent;
  border: 1px solid var(--tl-border);
  border-radius: var(--tl-radius);
  font-size: 12px;
  font-weight: 500;
  color: var(--tl-text-secondary);
  cursor: pointer;
  transition: all 0.2s;
}

.tl-btn-action:hover {
  background: var(--tl-bg-secondary);
  color: var(--tl-text-primary);
  border-color: var(--tl-text-primary);
}

.tl-export-menu {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 6px;
  background: var(--tl-bg);
  border: 1px solid var(--tl-border);
  border-radius: var(--tl-radius);
  box-shadow: var(--tl-shadow-lg);
  min-width: 170px;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: all 0.2s var(--tl-transition);
}

.tl-export-menu.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.tl-export-option {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 11px 16px;
  background: none;
  border: none;
  font-size: 13px;
  font-weight: 500;
  color: var(--tl-text-primary);
  cursor: pointer;
  text-align: right;
  transition: background 0.15s;
}

.tl-export-option:hover {
  background: var(--tl-bg-secondary);
}

.tl-export-option:first-child {
  border-radius: var(--tl-radius) var(--tl-radius) 0 0;
}

.tl-export-option:last-child {
  border-radius: 0 0 var(--tl-radius) var(--tl-radius);
}

.tl-export-option svg {
  color: var(--tl-accent);
  flex-shrink: 0;
}

/* ════════════════════════════════════════════════════════════════
   TOOLBAR
   ════════════════════════════════════════════════════════════════ */

.tl-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: var(--tl-bg-secondary);
  border-bottom: 1px solid var(--tl-border);
  flex-shrink: 0;
}

.tl-toolbar-right,
.tl-toolbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.tl-filter-select {
  padding: 8px 32px 8px 12px;
  background: var(--tl-bg);
  border: 1px solid var(--tl-border);
  border-radius: var(--tl-radius);
  font-size: 13px;
  font-weight: 500;
  color: var(--tl-text-primary);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23999999' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: left 10px center;
  transition: border-color 0.2s;
}

.tl-filter-select:focus {
  outline: none;
  border-color: var(--tl-text-primary);
}

.tl-events-counter {
  display: flex;
  align-items: center;
  gap: 8px;
}

.tl-counter-badge {
  background: var(--tl-text-primary);
  color: white;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.tl-counter-label {
  font-size: 12px;
  color: var(--tl-text-muted);
}

/* ════════════════════════════════════════════════════════════════
   TIMELINE VISUAL
   ════════════════════════════════════════════════════════════════ */

.tl-visual-wrapper {
  padding: 24px;
  border-bottom: 1px solid var(--tl-border);
  flex-shrink: 0;
  overflow-x: auto;
  overflow-y: hidden;
}

.tl-visual {
  position: relative;
  height: 60px;
  min-width: 500px;
}

.tl-visual-empty {
  text-align: center;
  padding: 20px;
  font-size: 13px;
  color: var(--tl-text-muted);
}

.tl-track {
  position: absolute;
  top: 20px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--tl-border), var(--tl-accent), var(--tl-border));
  border-radius: 1px;
}

.tl-points {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 50px;
}

.tl-point {
  position: absolute;
  transform: translateX(50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
  z-index: 2;
}

.tl-point:hover .tl-point-dot {
  transform: scale(1.4);
}

.tl-point-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2.5px solid var(--tl-bg);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.12);
  transition: transform 0.2s var(--tl-transition);
}

.tl-point-date {
  margin-top: 6px;
  font-size: 10px;
  font-weight: 600;
  color: var(--tl-text-muted);
  white-space: nowrap;
  font-family: 'SF Mono', 'Monaco', monospace;
}

.tl-range {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  color: var(--tl-text-muted);
  font-family: 'SF Mono', 'Monaco', monospace;
}

/* ════════════════════════════════════════════════════════════════
   EVENTS CONTAINER
   ════════════════════════════════════════════════════════════════ */

.tl-events-container {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding: 20px 24px;
  background: var(--tl-bg-secondary);
}

.tl-events-container::-webkit-scrollbar {
  width: 4px;
}

.tl-events-container::-webkit-scrollbar-track {
  background: transparent;
}

.tl-events-container::-webkit-scrollbar-thumb {
  background: var(--tl-border);
  border-radius: 2px;
}

/* Empty State */
.tl-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 50px 20px;
  color: var(--tl-text-muted);
  gap: 12px;
}

.tl-empty-state span {
  font-size: 13px;
}

/* ════════════════════════════════════════════════════════════════
   EVENT CARD
   ════════════════════════════════════════════════════════════════ */

.tl-event-card {
  display: flex;
  flex-direction: row;
  background: var(--tl-bg);
  border: 1px solid var(--tl-border);
  border-radius: var(--tl-radius);
  overflow: hidden;
  transition: all 0.2s var(--tl-transition);
  flex-shrink: 0;
  margin-bottom: 12px;
}

.tl-event-card:last-child {
  margin-bottom: 0;
}

.tl-event-card:hover {
  box-shadow: var(--tl-shadow);
  transform: translateY(-1px);
}

.tl-event-card.highlight {
  border-color: var(--tl-accent);
  box-shadow: 0 0 0 3px var(--tl-accent-light);
}

/* Side Indicator */
.tl-event-indicator {
  width: 4px !important;
  min-width: 4px !important;
  max-width: 4px !important;
  flex-shrink: 0;
  border-radius: 0;
}

.tl-event-card.importance-critical .tl-event-indicator {
  background: var(--tl-error) !important;
}

.tl-event-card.importance-important .tl-event-indicator {
  background: var(--tl-warning) !important;
}

.tl-event-card.importance-minor .tl-event-indicator {
  background: var(--tl-success) !important;
}

/* Event Content */
.tl-event-content {
  flex: 1;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.tl-event-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.tl-event-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.tl-category-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 600;
  border-radius: 4px;
  border: 1px solid;
  letter-spacing: 0.01em;
}

.tl-date-badge {
  padding: 4px 10px;
  background: var(--tl-bg-secondary);
  border: 1px solid var(--tl-border);
  color: var(--tl-text-secondary);
  font-size: 11px;
  font-weight: 500;
  border-radius: 4px;
  font-family: 'SF Mono', 'Monaco', monospace;
}

.tl-event-importance {
  font-size: 14px;
  line-height: 1;
}

.tl-event-title {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--tl-text-primary);
  line-height: 1.4;
  letter-spacing: -0.01em;
}

.tl-event-desc {
  margin: 0;
  font-size: 13px;
  color: var(--tl-text-secondary);
  line-height: 1.6;
}

/* ════════════════════════════════════════════════════════════════
   EVENT ACTIONS
   ════════════════════════════════════════════════════════════════ */

.tl-event-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 12px;
  margin-top: 2px;
  border-top: 1px solid var(--tl-border);
}

.tl-btn-navigate {
  display: inline-flex !important;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  background: var(--tl-bg);
  color: var(--tl-text-primary);
  border: 1px solid var(--tl-border);
  border-radius: var(--tl-radius);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.tl-btn-navigate:hover:not(:disabled) {
  background: var(--tl-accent-light);
  border-color: var(--tl-accent);
  color: var(--tl-text-primary);
}

.tl-btn-navigate:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.tl-btn-navigate svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ════════════════════════════════════════════════════════════════
   FOOTER
   ════════════════════════════════════════════════════════════════ */

.tl-footer {
  height: 48px;
  padding: 0 24px;
  border-top: 1px solid var(--tl-border);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-shrink: 0;
  background: var(--tl-bg);
}

.tl-footer-timestamp {
  font-size: 11px;
  color: var(--tl-text-muted);
  font-family: 'SF Mono', 'Monaco', monospace;
}

/* ════════════════════════════════════════════════════════════════
   CHAT SUMMARY CARD
   ════════════════════════════════════════════════════════════════ */

.tl-chat-summary {
  background: var(--tl-bg, #ffffff);
  border: 1px solid #e5e5e5;
  border-radius: 8px;
  padding: 16px;
  max-width: 400px;
}

.tl-sum-header {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
}

.tl-sum-icon-box {
  width: 32px;
  height: 32px;
  background: #111111;
  color: #ffffff;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.tl-sum-title {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.tl-sum-title strong {
  font-size: 14px;
  color: #111111;
  letter-spacing: -0.01em;
}

.tl-sum-count {
  font-size: 11px;
  color: #999999;
}

.tl-sum-events {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 12px;
  padding: 10px 12px;
  background: #fdfdfd;
  border: 1px solid #e5e5e5;
  border-radius: 8px;
}

.tl-sum-event {
  font-size: 12px;
  color: #111111;
  line-height: 1.5;
}

.tl-sum-event strong {
  font-family: 'SF Mono', 'Monaco', monospace;
  font-size: 11px;
}

.tl-sum-more {
  font-size: 11px;
  color: #b49b67;
  font-style: italic;
  margin-top: 4px;
}

.tl-sum-stats {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
}

.tl-sum-stat-critical,
.tl-sum-stat-important {
  font-size: 12px;
  font-weight: 500;
}

.tl-sum-stat-critical {
  color: #c53030;
}

.tl-sum-stat-important {
  color: #d97706;
}

.tl-sum-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 16px;
  background: #111111;
  color: #ffffff;
  border: none;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  line-height: 1;
  box-shadow: 0 2px 8px rgba(17, 17, 17, 0.15);
}

.tl-sum-btn svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.tl-sum-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(17, 17, 17, 0.2);
}