/* =============================================================================
   CHAT DETAIL / INFO PANEL
============================================================================= */

.chat-detail-chevron {
  display: none;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 20px;
  cursor: pointer;
  padding: 4px;
  margin-right: 2px;
  transition:
    color 0.2s,
    transform 0.2s;
  flex-shrink: 0;
  line-height: 1;
}
.chat-detail-chevron:hover {
  color: var(--text-primary);
}
.chat-detail-chevron.panel-open {
  transform: rotate(180deg);
  color: var(--accent);
}

@media (max-width: 768px) {
  .chat-detail-chevron {
    display: flex;
  }
}
@media (min-width: 769px) {
  .chat-detail-chevron {
    display: flex;
    opacity: 0.5;
    font-size: 16px;
  }
  .chat-detail-chevron:hover {
    opacity: 1;
  }
  #chatTitle.clickable {
    cursor: pointer;
  }
  #chatTitle.clickable:hover {
    color: var(--accent);
  }
}

.chat-detail-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 9998;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.chat-detail-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.chat-detail-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 360px;
  max-width: 90vw;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: -4px 0 24px rgba(0, 0, 0, 0.3);
}
.chat-detail-panel.open {
  transform: translateX(0);
}

@media (max-width: 768px) {
  .chat-detail-panel {
    width: 100%;
    max-width: 100vw;
  }
}

.chat-detail-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.chat-detail-panel-header h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.chat-detail-close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 22px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
  transition:
    background 0.2s,
    color 0.2s;
  line-height: 1;
}
.chat-detail-close-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.chat-detail-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
}

.chat-detail-section {
  margin-bottom: 24px;
}
.chat-detail-section-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.chat-detail-name-input {
  width: 100%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--text-primary);
  font-size: 16px;
  font-weight: 600;
  outline: none;
  transition: border-color 0.2s;
  box-sizing: border-box;
}
.chat-detail-name-input:focus {
  border-color: var(--accent);
}

.chat-detail-info-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.chat-detail-info-row:last-child {
  border-bottom: none;
}
.chat-detail-info-label {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.chat-detail-info-value {
  font-size: 13px;
  color: var(--text-primary);
  font-weight: 500;
}

.chat-detail-category-select {
  width: 100%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  color: var(--text-primary);
  font-size: 14px;
  cursor: pointer;
  outline: none;
  appearance: auto;
  box-sizing: border-box;
}
.chat-detail-category-select:focus {
  border-color: var(--accent);
}

.chat-detail-files-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
}
.chat-detail-file-item {
  aspect-ratio: 1;
  border-radius: 6px;
  overflow: hidden;
  cursor: pointer;
  position: relative;
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.2s;
}
.chat-detail-file-item:hover {
  opacity: 0.8;
}
.chat-detail-file-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.chat-detail-file-item .file-icon {
  font-size: 28px;
}
.chat-detail-file-item .file-name-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
  padding: 4px 6px;
  font-size: 10px;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.chat-detail-files-empty {
  color: var(--text-muted);
  font-size: 13px;
  text-align: center;
  padding: 24px 16px;
}

.chat-detail-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.chat-detail-action-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
  cursor: pointer;
  transition: background 0.2s;
  text-align: left;
}
.chat-detail-action-btn:hover {
  background: var(--bg-hover);
}
.chat-detail-action-btn.danger {
  color: var(--danger);
}
.chat-detail-action-btn.danger:hover {
  background: rgba(218, 55, 60, 0.1);
}

.chat-detail-panel.swiping {
  transition: none;
}