/* ============================================
   THINKING ANIMATION STYLES
   ============================================
   Extracted from index.html for use in chat interfaces.
   This animation shows AI "thinking" steps with a pulsing node
   and expanding/collapsing step list.
*/

/* Thinking Container - Light rounded box like Claude */
.thinking-container {
  margin: 0;
  padding: 0;
  background: #fafafa;
  border: 1px solid #e8e8e8;
  border-radius: 12px;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: opacity 0.3s ease, max-height 0.4s ease-out, margin 0.4s ease-out, padding 0.3s ease-out;
}

.thinking-container.visible {
  max-height: 800px;
  margin: 0.5rem 0;
  padding: 6px 10px;
  opacity: 1;
  overflow: visible;
}

.thinking-container.collapsing {
  opacity: 0.5;
  max-height: 50px;
}

.thinking-container.hidden {
  opacity: 0;
  max-height: 0;
  padding: 0;
  margin: 0;
}

/* Dark mode - subtle dark box */
html.dark-mode .thinking-container {
  background: #2a2a2a;
  border-color: #3a3a3a;
}

/* Thinking Header - Claude style with chevron on right */
.thinking-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: #555;
  margin-bottom: 0;
  padding: 4px 0;
  cursor: pointer;
  transition: color 0.2s ease;
}

.thinking-header-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Steps count text - 20% smaller than chat (12px -> ~10px) */
.steps-count {
  font-family: 'Inter Display', 'Inter', sans-serif;
  font-weight: 300;
  font-size: 10px;
  color: #888;
}

html.dark-mode .steps-count {
  color: #777;
}

.thinking-header:hover {
  color: #333;
}

.thinking-header:hover .steps-toggle {
  color: #156082;
}

html.dark-mode .thinking-header {
  color: #aaa;
}

html.dark-mode .thinking-header:hover {
  color: #ccc;
}

html.dark-mode .thinking-header:hover .steps-toggle {
  color: #4a9bb8;
}

/* Pulsing Node */
.pulsing-node {
  width: 16px;
  height: 16px;
  position: relative;
}

.pulsing-node::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 8px;
  height: 8px;
  background: #156082;
  border-radius: 50%;
  box-shadow: none;
}

/* Static node - no pulse ring by default */
.pulsing-node::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 8px;
  height: 8px;
  border: none;
  border-radius: 50%;
  opacity: 0;
}

@keyframes pulse-ring {
  0% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.7;
  }
  100% {
    transform: translate(-50%, -50%) scale(3);
    opacity: 0;
  }
}

.thinking-header.done .pulsing-node::after {
  animation: none;
  opacity: 0;
}

html.dark-mode .pulsing-node::before {
  background: linear-gradient(135deg, #4a9bb8 0%, #3a7b98 100%);
  box-shadow: none;
}

html.dark-mode .pulsing-node::after {
  border: none;
  opacity: 0;
}

/* Steps Toggle - chevron on right */
.steps-toggle {
  display: flex;
  align-items: center;
  cursor: pointer;
  user-select: none;
  color: #888;
  padding: 2px 4px;
}

.steps-toggle .chevron {
  font-size: 0.75rem;
  transition: transform 0.25s ease;
  display: inline-block;
}

.steps-toggle.expanded .chevron {
  transform: rotate(0deg);
}

.steps-toggle:not(.expanded) .chevron {
  transform: rotate(180deg);
}

html.dark-mode .steps-toggle {
  color: #666;
}

/* Steps List - vertical timeline with connected nodes */
.steps-list {
  margin: 0;
  padding: 0 0 0 7px;
  list-style: none;
  font-size: 0.8rem;
  color: #666;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transform: translateY(-8px);
  transform-origin: top;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), 
              opacity 0.25s ease, 
              margin 0.25s ease,
              transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

/* Expanded: animate to large max-height for smooth fold */
.steps-list.expanded {
  max-height: 800px;
  margin-top: 8px;
  opacity: 1;
  overflow: visible;
  transform: translateY(0);
}

/* Progressive expansion: 1 step visible */
.steps-list.animating-1 {
  max-height: 32px;
  margin-top: 8px;
  opacity: 1;
  overflow: hidden;
  transform: translateY(0);
}

/* Progressive expansion: 2 steps visible */
.steps-list.animating-2 {
  max-height: 64px;
  margin-top: 8px;
  opacity: 1;
  overflow: hidden;
  transform: translateY(0);
}

/* Animating: limited height during step-by-step reveal (fits exactly 3 steps) */
.steps-list.animating {
  max-height: 95px;
  margin-top: 8px;
  opacity: 1;
  overflow: hidden;
  transform: translateY(0);
}

/* Full expanded mode: same, just shows hidden steps via CSS */
.steps-list.fully-expanded {
  max-height: 800px;
  overflow: visible;
}

.steps-list li {
  padding: 6px 0;
  padding-left: 18px;
  display: none;
  align-items: flex-start;
  gap: 10px;
  opacity: 0;
  transform: translateX(-5px);
  transition: opacity 0.2s ease, transform 0.2s ease, height 0.2s ease, padding 0.2s ease;
  position: relative;
}

/* Vertical connecting line */
.steps-list li::before {
  content: '';
  position: absolute;
  left: 3px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: #d0d0d0;
}

/* Hide line above first item */
.steps-list li:first-child::before {
  top: 50%;
}

/* Hide line below last item */
.steps-list li:last-child::before {
  bottom: 50%;
}

/* Visible step - fully shown */
.steps-list li.visible {
  display: flex;
  opacity: 1;
  transform: translateX(0);
}

/* Hidden during preview (collapsed but still in DOM) */
.steps-list li.preview-hidden {
  display: none;
}

/* When fully expanded, show all visible steps including preview-hidden */
.steps-list.fully-expanded li.preview-hidden {
  display: flex;
  opacity: 1;
  transform: translateX(0);
}

html.dark-mode .steps-list li {
  color: #999;
}

html.dark-mode .steps-list li::before {
  background: #444;
}

/* Step Icons - positioned as nodes on the timeline */
.steps-list li .step-icon {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 7px;
  height: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0;
  background: #999;
  border-radius: 50%;
  z-index: 1;
}

/* Thinking step - simple dot */
.steps-list li .step-icon.dot {
  background: #156082;
}

/* Completed step - green dot */
.steps-list li .step-icon.check {
  background: #22863a;
}

/* Action step - pencil icon (edit/write) */
.steps-list li .step-icon.edit {
  width: auto;
  height: auto;
  background: transparent;
  border-radius: 0;
  font-size: 0.7rem;
  color: #666;
  left: -2px;
}

html.dark-mode .step-icon.dot {
  background: #4a9bb8;
}

html.dark-mode .step-icon.check {
  background: #4CD964;
}

html.dark-mode .step-icon.edit {
  color: #888;
}

/* Error/blocker step - red X icon */
.steps-list li .step-icon.error {
  width: auto;
  height: auto;
  background: transparent;
  border-radius: 0;
  font-size: 0.75rem;
  color: #d73a49;
  left: -3px;
  font-weight: 600;
}

html.dark-mode .step-icon.error {
  color: #f85149;
}

/* Step Content - text and right-side info */
.step-content {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.step-text {
  flex: 1;
}

/* Step Changes - styled box like Claude */
.step-changes {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Mono', monospace;
  font-size: 0.7rem;
  margin-left: auto;
  flex-shrink: 0;
}

.step-changes .changes-box {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 8px;
  background: rgba(0, 0, 0, 0.04);
  border-radius: 4px;
  border: 1px solid rgba(0, 0, 0, 0.08);
}

.step-changes .added { 
  color: #22863a;
  font-weight: 500;
}

.step-changes .removed { 
  color: #cb2431;
  font-weight: 500;
}

.step-changes .filename { 
  color: #888;
  font-family: 'Inter Display', 'Inter', sans-serif;
  font-weight: 300;
  font-size: 0.65rem;
  text-align: right;
}

html.dark-mode .step-changes .changes-box {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.1);
}

html.dark-mode .step-changes .added {
  color: #4CD964;
}

html.dark-mode .step-changes .removed {
  color: #ff6b6b;
}

html.dark-mode .step-changes .filename {
  color: #777;
}

/* ============================================
   THOUGHT STATUS - Shiny text during thinking
   ============================================ */

.thought-status {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid #e8e8e8;
}

.thinking-container.complete .thought-status {
  display: none;
}

.thought-status-text {
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  font-weight: 400;
  background: linear-gradient(
    90deg, 
    #888 0%, 
    #888 40%, 
    #fff 50%, 
    #888 60%, 
    #888 100%
  );
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: thoughtShine 2s ease-in-out infinite;
}

@keyframes thoughtShine {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

html.dark-mode .thought-status {
  border-top-color: #3a3a3a;
}

html.dark-mode .thought-status-text {
  background: linear-gradient(
    90deg, 
    #777 0%, 
    #777 40%, 
    #ccc 50%, 
    #777 60%, 
    #777 100%
  );
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  animation: thoughtShine 2s ease-in-out infinite;
}

/* ============================================
   THOUGHT TRAIL - Expandable section after complete
   ============================================ */

.thought-trail {
  display: none;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid #e8e8e8;
}

.thinking-container.complete .thought-trail {
  display: block;
}

.thought-trail-header {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.thought-trail-label {
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  font-weight: 400;
  color: #666;
}

.thought-duration {
  color: #156082;
}

.thought-trail-expand {
  font-size: 0.6rem;
  color: #999;
  opacity: 0;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.thought-trail-header:hover .thought-trail-expand {
  opacity: 1;
}

.thought-trail.expanded .thought-trail-expand {
  opacity: 1;
  transform: rotate(180deg);
}

.thought-trail-content {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.3s ease, opacity 0.2s ease, padding 0.3s ease;
}

.thought-trail.expanded .thought-trail-content {
  max-height: 150px;
  opacity: 1;
  padding-top: 8px;
}

.thought-trail-content p {
  margin: 0;
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  font-weight: 300;
  line-height: 1.5;
  color: #666;
}

/* Dark mode */
html.dark-mode .thought-trail {
  border-top-color: #3a3a3a;
}

html.dark-mode .thought-trail-label {
  color: #999;
}

html.dark-mode .thought-duration {
  color: #4a9bb8;
}

html.dark-mode .thought-trail-expand {
  color: #777;
}

html.dark-mode .thought-trail-content p {
  color: #999;
}

/* Files Changed Section */
.files-changed-section {
  margin-top: 10px;
  margin-bottom: 10px;
  background: #fafafa;
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 6px;
  overflow: visible;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.8s ease, transform 0.8s ease;
  align-self: stretch;
  flex-shrink: 0;
  min-height: 80px;
}

.files-changed-section.visible {
  opacity: 1;
  transform: translateY(0);
}

.files-changed-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 10px;
  background: #f5f5f5;
  border-bottom: 1px solid rgba(0,0,0,0.06);
}

.files-changed-count {
  font-family: 'Inter', sans-serif;
  font-size: 0.6rem;
  font-weight: 500;
  color: #666;
}

.files-changed-actions {
  display: flex;
  gap: 8px;
}

.files-action-btn {
  padding: 3px 8px;
  font-family: 'Inter', sans-serif;
  font-size: 0.55rem;
  font-weight: 500;
  color: #666;
  background: transparent;
  border: none;
  cursor: pointer;
  transition: color 0.15s ease;
}

.files-action-btn:hover {
  color: #333;
}

.files-action-btn.primary {
  background: #156082;
  color: #fff;
  border-radius: 4px;
  padding: 3px 10px;
}

.files-action-btn.primary:hover {
  background: #1a7299;
}

.files-changed-list {
  padding: 4px 0;
}

.file-changed-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  font-family: 'Inter', sans-serif;
  font-size: 0.6rem;
  transition: background 0.15s ease;
}

.file-changed-item:hover {
  background: rgba(0,0,0,0.03);
}

.file-lang-icon {
  width: 18px;
  height: 18px;
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.45rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.file-lang-icon.js { background: #f0db4f; color: #323330; }
.file-lang-icon.html { background: #e44d26; }
.file-lang-icon.css { background: #264de4; }
.file-lang-icon.py { background: #3776ab; }
.file-lang-icon.rvt { background: #3498db; }
.file-lang-icon.dwg { background: #e67e22; }
.file-lang-icon.pdf { background: #e74c3c; }
.file-lang-icon.xlsx { background: #27ae60; }
.file-lang-icon.docx { background: #2980b9; }
.file-lang-icon.default { background: #888; }

.file-name {
  flex: 1;
  color: #333;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-changes {
  font-size: 0.55rem;
  color: #888;
}

.file-changes .added {
  color: #22863a;
}

.file-changes .removed {
  color: #cb2431;
}

/* Dark mode */
html.dark-mode .files-changed-section {
  background: #2a2a2a;
  border-color: rgba(255,255,255,0.08);
}

html.dark-mode .files-changed-header {
  background: #333;
  border-bottom-color: rgba(255,255,255,0.06);
}

html.dark-mode .files-changed-count {
  color: #999;
}

html.dark-mode .files-action-btn {
  color: #999;
}

html.dark-mode .files-action-btn:hover {
  color: #fff;
}

html.dark-mode .files-action-btn.primary {
  background: #4a9bb8;
}

html.dark-mode .files-action-btn.primary:hover {
  background: #5aabbf;
}

html.dark-mode .file-changed-item:hover {
  background: rgba(255,255,255,0.03);
}

html.dark-mode .file-name {
  color: #ccc;
}

html.dark-mode .file-changes {
  color: #666;
}