/* FILE: css/sidebar.css */

/* === Sidebar Layout === */
#sidebar {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  width: min(280px, 85vw);
  height: 100dvh;
  overflow-y: auto;
  overflow-x: hidden;
  position: fixed;
  top: 0;
  left: 0;
  transform: translateX(-100%);
  z-index: 200;
  -webkit-overflow-scrolling: touch;
  transition: transform var(--transition-base);
}

body.sidebar-open #sidebar {
  transform: translateX(0);
}

@media (min-width: 768px) {
  #sidebar {
    position: relative;
    width: var(--sidebar-width);
    height: 100%;
    flex-shrink: 0;
    transform: translateX(0) !important;
    z-index: var(--z-sidebar);
  }
}

/* === Sidebar Header (Logo) === */
.sidebar-header {
  padding: var(--space-5) var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  border-bottom: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

.sidebar-logo-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  filter: drop-shadow(0 0 8px rgba(108, 99, 255, 0.5));
  animation: glowPulse 3s ease-in-out infinite;
}

.sidebar-logo-text {
  display: flex;
  flex-direction: column;
}

.sidebar-logo-text .app-name {
  font-size: var(--font-size-md);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.3px;
  line-height: 1.2;
}

.sidebar-logo-text .app-tagline {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  letter-spacing: 0.3px;
}

/* === New Chat Button === */
#new-chat-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  width: calc(100% - var(--space-8));
  margin: var(--space-3) var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-medium);
  background: transparent;
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
  min-height: 44px;
}

#new-chat-btn:hover {
  background: var(--accent-glow);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  box-shadow: var(--shadow-glow);
}

#new-chat-btn:active {
  transform: scale(0.98);
}

#new-chat-btn svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* === Sidebar Search === */
.search-container {
  padding: 0 var(--space-4) var(--space-3);
  flex-shrink: 0;
}

.search-inner {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  transition: border-color var(--transition-fast);
}

.search-inner:focus-within {
  border-color: var(--border-input);
}

.search-inner svg {
  width: 15px;
  height: 15px;
  fill: var(--text-tertiary);
  flex-shrink: 0;
}

#sidebar-search-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  font-size: var(--font-size-sm);
  color: var(--text-primary);
}

#sidebar-search-input::placeholder {
  color: var(--text-tertiary);
}

#search-clear-btn {
  width: 18px;
  height: 18px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

#search-clear-btn:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

#search-clear-btn svg {
  width: 12px;
  height: 12px;
  fill: currentColor;
}

/* === Conversation List === */
#conversation-list {
  flex: 1;
  overflow-y: auto;
  padding: 0 var(--space-2);
}

.conv-group {
  margin-bottom: var(--space-2);
}

.conv-group-label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: var(--space-2) var(--space-2);
  position: sticky;
  top: 0;
  background: var(--bg-secondary);
  z-index: 1;
}

.conv-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-2);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  border-left: 2px solid transparent;
  user-select: none;
}

.conv-item:hover {
  background: var(--bg-hover);
}

.conv-item.active {
  background: var(--bg-active);
  border-left-color: var(--accent-primary);
}

.conv-item-info {
  flex: 1;
  min-width: 0;
}

.conv-item-title {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.3;
}

.conv-item.active .conv-item-title {
  color: var(--accent-primary);
}

.conv-item-preview {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 2px;
  line-height: 1.4;
}

.conv-item-meta {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  white-space: nowrap;
  margin-top: 2px;
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.conv-unread-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-primary);
}

.conv-item-actions {
  display: none;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
  margin-top: 2px;
}

.conv-item:hover .conv-item-actions {
  display: flex;
}

.conv-item-action-btn {
  width: 22px;
  height: 22px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
  transition: all var(--transition-fast);
}

.conv-item-action-btn:hover {
  background: var(--bg-active);
  color: var(--text-primary);
}

.conv-item-action-btn.delete:hover {
  color: var(--accent-danger);
}

.conv-item-action-btn svg {
  width: 13px;
  height: 13px;
  fill: currentColor;
}

.conv-pinned-icon {
  color: var(--accent-warning);
  font-size: 10px;
}

/* Empty search state */
.conv-empty-search {
  text-align: center;
  padding: var(--space-8) var(--space-4);
  color: var(--text-tertiary);
  font-size: var(--font-size-sm);
}

/* === Sidebar Bottom Buttons === */
.sidebar-bottom {
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  flex-shrink: 0;
}

.sidebar-bottom-btn {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.sidebar-bottom-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.sidebar-bottom-btn svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
  flex-shrink: 0;
}

/* === Sidebar Footer === */
.sidebar-footer {
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

#storage-usage {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
}

.online-indicator {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

#status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-success);
  transition: background var(--transition-fast);
}

#status-dot.offline {
  background: var(--text-tertiary);
}

#status-label {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
}