/* ============================================
   CHAT V2.1 IMPROVEMENTS
   ============================================ */

/* Scroll to bottom button */
.scroll-btn {
  position: absolute;
  bottom: 80px;
  right: 20px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition-fast);
  z-index: 10;
  color: var(--text-secondary);
}

.scroll-btn:hover {
  background: var(--bg-secondary);
  color: var(--accent);
  border-color: var(--accent);
}

.scroll-btn.show {
  opacity: 1;
  transform: translateY(0);
}

.scroll-btn svg {
  width: 20px;
  height: 20px;
}

/* Improved avatars */
.msg-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
  background: var(--bg-secondary);
}

.msg-user .msg-avatar {
  background: var(--user-bg);
}

.msg-ai .msg-avatar {
  background: var(--accent-light);
}

/* Message animations */
.msg {
  animation: none; /* Controlled by JS */
}

/* Error message styling */
.msg-error .msg-body {
  border-left: 3px solid var(--danger);
  padding-left: var(--spacing-md);
}

/* Code block with copy button */
.msg-body pre {
  position: relative;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  padding: var(--spacing-md);
  overflow-x: auto;
  margin: var(--spacing-sm) 0;
}

.code-copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: var(--bg);
  border: 1px solid var(--border);
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--transition-fast);
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.msg-body pre:hover .code-copy-btn {
  opacity: 1;
}

.code-copy-btn:hover {
  background: var(--bg-secondary);
  border-color: var(--accent);
}

/* Typing indicator with status */
.typing {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: var(--spacing-sm) 0;
}

.typing-dot {
  width: 8px;
  height: 8px;
  background: var(--text-muted);
  border-radius: 50%;
  animation: typingPulse 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(1) { animation-delay: 0s; }
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

.typing-status {
  margin-left: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

@keyframes typingPulse {
  0%, 60%, 100% { transform: scale(1); opacity: 0.5; }
  30% { transform: scale(1.2); opacity: 1; }
}

/* Loading state for send button */
.chat-send.loading {
  opacity: 0.6;
  pointer-events: none;
}

.chat-send.loading svg {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Improved follow-up buttons */
.followup-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-sm);
}

.followup-btn {
  padding: 6px 12px;
  font-size: var(--font-size-sm);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.followup-btn:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
  transform: translateY(-1px);
}

/* Placeholder animation */
.input-field::placeholder {
  transition: opacity 0.3s ease;
}

.input-field:focus::placeholder {
  opacity: 0.5;
}

/* Voice button recording state improved */
.voice-btn.recording {
  background: var(--danger);
  border-color: var(--danger);
  color: white;
  animation: voicePulse 1.5s infinite;
}

@keyframes voicePulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4); }
  50% { box-shadow: 0 0 0 10px rgba(239, 68, 68, 0); }
}

/* Welcome section improvements */
.welcome {
  text-align: center;
  padding: var(--spacing-xl);
  animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.welcome-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-md);
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

.welcome-icon svg {
  width: 32px;
  height: 32px;
  color: white;
}

/* Quick cards hover effect */
.quick-card {
  transition: all var(--transition-fast);
}

.quick-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}

.quick-card-items li {
  transition: all var(--transition-fast);
}

.quick-card-items li:hover {
  color: var(--accent);
  padding-left: 4px;
}

/* Message actions improved */
.msg-actions {
  display: flex;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-sm);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.msg:hover .msg-actions {
  opacity: 1;
}

.copy-btn, .regen-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  font-size: 12px;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.copy-btn:hover, .regen-btn:hover {
  background: var(--bg-secondary);
  border-color: var(--border);
  color: var(--text);
}

.copy-btn.copied {
  color: var(--success);
}

.copy-btn svg, .regen-btn svg {
  width: 14px;
  height: 14px;
}

/* Mobile improvements */
@media (max-width: 768px) {
  .scroll-btn {
    bottom: 70px;
    right: 10px;
    width: 36px;
    height: 36px;
  }

  .msg-actions {
    opacity: 1; /* Always visible on mobile */
  }

  .code-copy-btn {
    opacity: 1; /* Always visible on mobile */
  }
}

/* Streaming cursor */
.msg-streaming .msg-body {
  min-height: 20px;
}

.streaming-cursor {
  display: inline-block;
  width: 8px;
  height: 16px;
  background: var(--accent);
  margin-left: 2px;
  animation: blink 1s infinite;
  vertical-align: text-bottom;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}


/* ============================================
   SESSIONS DROPDOWN
   ============================================ */

.sessions-dropdown {
  position: relative;
}

.sessions-trigger {
  display: flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: none;
  color: var(--text);
  cursor: pointer;
  padding: 6px 10px;
  border-radius: var(--radius-md);
  transition: background 0.2s;
}

.sessions-trigger:hover {
  background: var(--bg-secondary);
}

.dropdown-arrow {
  opacity: 0.6;
  transition: transform 0.2s;
}

.dropdown-arrow svg {
  width: 16px;
  height: 16px;
}

.sessions-dropdown.open .dropdown-arrow {
  transform: rotate(180deg);
}

.sessions-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 280px;
  max-width: 320px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.2s ease;
}

.sessions-dropdown.open .sessions-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(4px);
}

.sessions-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  font-size: 13px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.new-chat-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}

.new-chat-btn:hover {
  background: var(--accent-hover);
  transform: scale(1.05);
}

.new-chat-btn svg {
  width: 16px;
  height: 16px;
}

.sessions-list {
  max-height: 320px;
  overflow-y: auto;
}

.session-item {
  display: flex;
  align-items: center;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.2s;
}

.session-item:last-child {
  border-bottom: none;
}

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

.session-item.active {
  background: rgba(14, 165, 233, 0.1);
  border-left: 3px solid var(--accent);
}

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

.session-name {
  font-weight: 500;
  font-size: 14px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.session-preview {
  font-size: 12px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 2px;
}

.session-delete {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  opacity: 0;
  transition: all 0.2s;
}

.session-item:hover .session-delete {
  opacity: 1;
}

.session-delete:hover {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
}

.session-delete svg {
  width: 16px;
  height: 16px;
}

/* Mobile adjustments */
@media (max-width: 768px) {
  .sessions-menu {
    position: fixed;
    top: auto;
    bottom: 60px;
    left: 8px;
    right: 8px;
    min-width: auto;
    max-width: none;
  }

  .sessions-list {
    max-height: 50vh;
  }
}


/* Session actions group */
.session-actions {
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: opacity 0.2s;
}

.session-item:hover .session-actions {
  opacity: 1;
}

.session-edit {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
}

.session-edit:hover {
  background: rgba(14, 165, 233, 0.1);
  color: var(--accent);
}

.session-edit svg {
  width: 14px;
  height: 14px;
}

/* Rename input */
.session-rename-input {
  width: 100%;
  padding: 4px 8px;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  outline: none;
}

.session-rename-input:focus {
  box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.2);
}

/* Double-click hint */
.session-name {
  cursor: default;
}

.session-item.active .session-name {
  cursor: text;
}


/* ============================================
   CHAT SEARCH
   ============================================ */

.sessions-header-actions {
  display: flex;
  gap: 6px;
}

.sessions-search-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: transparent;
  color: var(--text-secondary);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
}

.sessions-search-btn:hover {
  background: var(--bg-secondary);
  color: var(--text);
}

.sessions-search-btn svg {
  width: 16px;
  height: 16px;
}

.sessions-search {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
}

.sessions-search-input {
  width: 100%;
  padding: 8px 12px;
  font-size: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  color: var(--text);
  outline: none;
  transition: border-color 0.2s;
}

.sessions-search-input:focus {
  border-color: var(--accent);
}

.search-results {
  max-height: 320px;
  overflow-y: auto;
}

.search-hint {
  padding: 16px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 13px;
}

.search-result {
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.2s;
}

.search-result:last-child {
  border-bottom: none;
}

.search-result:hover {
  background: var(--bg-secondary);
}

.search-result-session {
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.search-result-role {
  font-size: 12px;
  color: var(--text-secondary);
}

.search-result-text {
  font-size: 13px;
  color: var(--text);
  line-height: 1.4;
  margin-top: 2px;
}

.search-result-text mark {
  background: rgba(14, 165, 233, 0.3);
  color: inherit;
  padding: 0 2px;
  border-radius: 2px;
}

/* Highlight flash for found message */
.message.highlight-flash {
  animation: highlightFlash 2s ease;
}

@keyframes highlightFlash {
  0%, 100% { background: transparent; }
  20%, 80% { background: rgba(14, 165, 233, 0.15); }
}


/* ============================================
   VOICE INPUT
   ============================================ */

.voice-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
}

.voice-btn:hover {
  color: var(--accent);
  background: rgba(14, 165, 233, 0.1);
}

.voice-btn svg {
  width: 20px;
  height: 20px;
}

/* Recording state */
.voice-btn.recording {
  color: #ef4444;
  animation: pulse 1.5s infinite;
}

.voice-btn.recording svg {
  fill: #ef4444;
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.1);
    opacity: 0.8;
  }
}

/* Recording indicator */
.voice-btn.recording::after {
  content: "";
  position: absolute;
  width: 8px;
  height: 8px;
  background: #ef4444;
  border-radius: 50%;
  top: 6px;
  right: 6px;
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}


/* ============================================
   FEEDBACK BUTTONS
   ============================================ */

.feedback-btns {
  display: flex;
  gap: 4px;
  margin-left: auto;
}

.feedback-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
  opacity: 0.6;
}

.feedback-btn:hover {
  opacity: 1;
  background: var(--bg-secondary);
}

.feedback-btn svg {
  width: 16px;
  height: 16px;
}

.feedback-btn.thumbs-up:hover,
.feedback-btn.thumbs-up.active {
  color: #10b981;
}

.feedback-btn.thumbs-down:hover,
.feedback-btn.thumbs-down.active {
  color: #ef4444;
}

.feedback-btn.active {
  opacity: 1;
}

.feedback-btn.active svg {
  fill: currentColor;
}

/* Show feedback btns on message hover */
.msg:hover .feedback-btns {
  opacity: 1;
}


/* ============================================
   QUICK PROMPTS CATEGORIES
   ============================================ */

.prompts-section {
  padding: 0 !important;
}

.prompts-section .sidebar-title {
  padding: 12px 16px 8px;
}

.prompt-category {
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.prompt-category:last-of-type {
  border-bottom: none;
}

.prompt-category-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 16px;
  background: transparent;
  border: none;
  color: rgba(255,255,255,0.8);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  text-align: left;
}

.prompt-category-btn:hover {
  background: rgba(255,255,255,0.05);
  color: white;
}

.prompt-category-btn svg {
  width: 16px;
  height: 16px;
  opacity: 0.7;
}

.prompt-category-btn span:first-of-type {
  display: flex;
}

.prompt-category-btn span:nth-of-type(2) {
  flex: 1;
}

.prompt-arrow {
  transition: transform 0.2s;
}

.prompt-arrow svg {
  width: 14px;
  height: 14px;
}

.prompt-category.open .prompt-arrow {
  transform: rotate(180deg);
}

.prompt-list {
  display: none;
  padding: 4px 8px 8px 28px;
  flex-direction: column;
  gap: 2px;
}

.prompt-category.open .prompt-list {
  display: flex;
}

.prompt-list .sidebar-quick {
  padding: 8px 12px;
  font-size: 12px;
  background: rgba(255,255,255,0.03);
  border-radius: var(--radius-sm);
  text-align: left;
}

.prompt-list .sidebar-quick:hover {
  background: rgba(14, 165, 233, 0.15);
}


/* ============================================
   EXPORT DROPDOWN
   ============================================ */

.export-dropdown {
  position: relative;
}

.export-menu {
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 160px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.2s;
}

.export-dropdown.open .export-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(4px);
}

.export-menu button {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 14px;
  background: transparent;
  border: none;
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
  transition: background 0.2s;
  text-align: left;
}

.export-menu button:first-child {
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.export-menu button:last-child {
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.export-menu button:hover {
  background: var(--bg-secondary);
}

.export-menu button svg {
  width: 16px;
  height: 16px;
  opacity: 0.6;
}


/* ============================================
   USAGE STATISTICS
   ============================================ */

.sidebar-stats {
  border-top: 1px solid rgba(255,255,255,0.05);
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding: 0 16px 12px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10px;
  background: rgba(255,255,255,0.03);
  border-radius: var(--radius-sm);
}

.stat-value {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  font-size: 11px;
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}


/* ============================================
   FAVORITES
   ============================================ */

.favorite-btn:hover,
.favorite-btn.active {
  color: #f59e0b;
}

.favorite-btn.active svg {
  fill: #f59e0b;
}

/* Keyboard shortcuts hint */
.shortcuts-hint {
  position: fixed;
  bottom: 80px;
  right: 20px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-size: 12px;
  color: var(--text-secondary);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s;
}

.shortcuts-hint.show {
  opacity: 1;
  visibility: visible;
}

.shortcuts-hint kbd {
  display: inline-block;
  padding: 2px 6px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: monospace;
  font-size: 11px;
}


/* ============================================
   SHARE TOAST
   ============================================ */

.share-toast {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--text);
  color: var(--bg);
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  z-index: 10000;
  opacity: 0;
  transition: all 0.3s ease;
}

.share-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Favorite message highlight */
.msg-ai.favorite-highlight {
  background: rgba(14, 165, 233, 0.1);
  border-left: 3px solid var(--accent);
  animation: favoriteGlow 1s ease-in-out;
}

@keyframes favoriteGlow {
  0%, 100% { box-shadow: none; }
  50% { box-shadow: 0 0 20px rgba(14, 165, 233, 0.3); }
}

.favorite-btn.active svg {
  fill: #fbbf24;
  stroke: #fbbf24;
}