/* Auto dark mode */
@media (prefers-color-scheme: dark) {
  html:not(.light) { @apply dark; }
}

/* Textarea auto-resize */
textarea {
  field-sizing: content;
}

/* Input container acts like a text field */
.input-container {
  cursor: text;
}


/* Message area */
#messages {
  scroll-behavior: smooth;
}

.message-content {
  line-height: 1.6;
}

.message-content p {
  margin-bottom: 0.5em;
}

.message-content p:last-child {
  margin-bottom: 0;
}

.message-content pre {
  background: #fafafa;
  border-radius: 0.5rem;
  overflow-x: auto;
  margin: 0.75em 0;
}

.dark .message-content pre {
  background: #282c34;
}

.message-content pre code {
  display: block;
  padding: 0.75rem 1rem;
  font-size: 0.85em;
}

.message-content code:not(pre code) {
  background: #f3f4f6;
  padding: 0.1em 0.35em;
  border-radius: 0.25rem;
  font-size: 0.9em;
}

.dark .message-content code:not(pre code) {
  background: #1f2937;
}

.message-content ul, .message-content ol {
  padding-left: 1.5em;
  margin: 0.5em 0;
}

.message-content li {
  margin: 0.25em 0;
}

.message-content table {
  border-collapse: collapse;
  margin: 0.5em 0;
}

.message-content th, .message-content td {
  border: 1px solid #d1d5db;
  padding: 0.4em 0.75em;
  text-align: left;
}

.dark .message-content th, .dark .message-content td {
  border-color: #374151;
}

/* Tool call card */
.tool-card {
  border: 1px solid #e5e7eb;
  border-radius: 0.75rem;
  overflow: hidden;
  margin: 0.75em 0;
}

.dark .tool-card {
  border-color: #374151;
}

.tool-card-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: #f9fafb;
  border-bottom: 1px solid #e5e7eb;
  font-size: 0.8rem;
  font-weight: 500;
  color: #6b7280;
  cursor: pointer;
  user-select: none;
}

.dark .tool-card-header {
  background: #111827;
  border-bottom-color: #374151;
  color: #9ca3af;
}

.tool-card-header .chevron {
  transition: transform 0.2s;
}

.tool-card.collapsed .chevron {
  transform: rotate(-90deg);
}

.tool-card.collapsed .tool-card-body {
  display: none;
}

.tool-card-header .tool-header-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 0.25rem;
  color: #9ca3af;
  opacity: 0;
  transition: opacity 0.15s, background-color 0.15s, color 0.15s;
}

.tool-card-header:hover .tool-header-btn {
  opacity: 1;
}

.tool-card-header .tool-header-btn:hover {
  background: #e5e7eb;
  color: #374151;
}

.dark .tool-card-header .tool-header-btn:hover {
  background: #374151;
  color: #d1d5db;
}

.tool-card-header .recalc-btn.recalculating {
  opacity: 1;
  animation: spin 0.6s linear infinite;
}

.tool-card-code {
  overflow: hidden;
}

/* highlight.js theme — atom-one-light (default) */
.hljs { background: #fafafa; color: #383a42; }
.hljs-keyword, .hljs-selector-tag, .hljs-literal { color: #a626a4; }
.hljs-string, .hljs-addition { color: #50a14f; }
.hljs-number { color: #986801; }
.hljs-built_in, .hljs-title, .hljs-section { color: #4078f2; }
.hljs-comment, .hljs-quote { color: #a0a1a7; font-style: italic; }
.hljs-variable, .hljs-template-variable { color: #e45649; }
.hljs-attr, .hljs-attribute { color: #986801; }
.hljs-symbol, .hljs-bullet { color: #4078f2; }
.hljs-deletion { color: #e45649; }

/* highlight.js theme — atom-one-dark */
.dark .hljs { background: #282c34; color: #abb2bf; }
.dark .hljs-keyword, .dark .hljs-selector-tag, .dark .hljs-literal { color: #c678dd; }
.dark .hljs-string, .dark .hljs-addition { color: #98c379; }
.dark .hljs-number { color: #d19a66; }
.dark .hljs-built_in, .dark .hljs-title, .dark .hljs-section { color: #61afef; }
.dark .hljs-comment, .dark .hljs-quote { color: #5c6370; font-style: italic; }
.dark .hljs-variable, .dark .hljs-template-variable { color: #e06c75; }
.dark .hljs-attr, .dark .hljs-attribute { color: #d19a66; }
.dark .hljs-symbol, .dark .hljs-bullet { color: #61afef; }
.dark .hljs-deletion { color: #e06c75; }

.tool-card-result {
  padding: 0.75rem;
  background: #f0fdf4;
  border-top: 1px solid #e5e7eb;
  font-family: ui-monospace, monospace;
  font-size: 0.85em;
  white-space: pre-wrap;
  word-break: break-all;
}

.dark .tool-card-result {
  background: #052e16;
  border-top-color: #374151;
  color: #bbf7d0;
}

.tool-card-result.error {
  background: #fef2f2;
  color: #dc2626;
}

.dark .tool-card-result.error {
  background: #450a0a;
  color: #fca5a5;
}

.tool-card-result.warning {
  background: #fffbeb;
  color: #b45309;
}

.dark .tool-card-result.warning {
  background: #451a03;
  color: #fcd34d;
}

.tool-card-result.graphics {
  background: white;
  display: flex;
  justify-content: center;
}

.dark .tool-card-result.graphics {
  background: #1a1a2e;
}

.tool-card-result.graphics svg {
  max-width: 100%;
  height: auto;
}

/* Tool card code editing */
.tool-card-code.editing {
  padding: 0;
}

.tool-code-editor-wrap .cm-editor {
  border-radius: 0;
}

.tool-code-editor-wrap .cm-editor.cm-focused {
  outline: none;
}

.tool-code-edit-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.375rem;
  padding: 0.375rem 0.75rem;
  background: #f0f0f0;
  border-top: 1px solid #e5e7eb;
}

.dark .tool-code-edit-actions {
  background: #282c34;
  border-top-color: #3e4451;
}

.tool-code-edit-btn {
  padding: 0.25rem 0.75rem;
  border-radius: 0.375rem;
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
}

.tool-code-edit-btn.cancel {
  background: #d1d5db;
  color: #374151;
}

.tool-code-edit-btn.cancel:hover {
  background: #bfc4cc;
}

.dark .tool-code-edit-btn.cancel {
  background: #3e4451;
  color: #abb2bf;
}

.dark .tool-code-edit-btn.cancel:hover {
  background: #4b5263;
}

.tool-code-edit-btn.run {
  background: #3b82f6;
  color: white;
}

.tool-code-edit-btn.run:hover {
  background: #2563eb;
}

/* Edited badge */
.edited-badge {
  font-size: 0.65rem;
  font-weight: 500;
  color: #d97706;
  background: #fef3c7;
  padding: 0.075rem 0.4rem;
  border-radius: 0.25rem;
  margin-left: 0.375rem;
  letter-spacing: 0.01em;
}

.dark .edited-badge {
  background: #451a03;
  color: #fbbf24;
}

/* Spinner */
@keyframes spin {
  to { transform: rotate(360deg); }
}

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid #d1d5db;
  border-top-color: #3b82f6;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

/* Toast */
.toast {
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  animation: toast-in 0.3s ease;
}

@keyframes toast-in {
  from { opacity: 0; transform: translateY(-0.5rem); }
  to { opacity: 1; transform: translateY(0); }
}

/* Conversation list item */
.conv-item {
  display: flex;
  align-items: center;
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  cursor: pointer;
  font-size: 0.875rem;
  transition: background-color 0.15s;
}

.conv-item:hover {
  background: #e5e7eb;
}

.dark .conv-item:hover {
  background: #1f2937;
}

.conv-item.active {
  background: #e5e7eb;
}

.dark .conv-item.active {
  background: #1f2937;
}

.conv-item .delete-btn {
  opacity: 0;
  margin-left: auto;
  padding: 0.25rem;
  border-radius: 0.25rem;
  flex-shrink: 0;
}

.conv-item:hover .delete-btn {
  opacity: 1;
}

.conv-item .delete-btn:hover {
  background: #fecaca;
  color: #dc2626;
}

.dark .conv-item .delete-btn:hover {
  background: #450a0a;
  color: #fca5a5;
}

/* User message actions */
.user-message-row {
  position: relative;
}

.user-msg-actions {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  opacity: 0;
  transition: opacity 0.15s;
  margin-top: 0.125rem;
}

.assistant-msg-actions {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  opacity: 0;
  transition: opacity 0.15s;
  margin-top: 0.25rem;
}

.assistant-message-row:hover .assistant-msg-actions {
  opacity: 1;
}

.user-message-row:hover .user-msg-actions {
  opacity: 1;
}

.msg-action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 0.375rem;
  color: #9ca3af;
  transition: background-color 0.15s, color 0.15s;
}

.msg-action-btn:hover {
  background: #e5e7eb;
  color: #374151;
}

.dark .msg-action-btn:hover {
  background: #374151;
  color: #d1d5db;
}

/* Attachment chips */
.attachment-preview {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}

.attachment-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.5rem;
  border-radius: 0.5rem;
  background: #f3f4f6;
  font-size: 0.75rem;
  color: #374151;
  max-width: 200px;
}

.dark .attachment-chip {
  background: #1f2937;
  color: #d1d5db;
}

.attachment-chip .chip-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.attachment-chip .chip-remove {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  color: #9ca3af;
  flex-shrink: 0;
  transition: background-color 0.15s, color 0.15s;
}

.attachment-chip .chip-remove:hover {
  background: #e5e7eb;
  color: #374151;
}

.dark .attachment-chip .chip-remove:hover {
  background: #374151;
  color: #d1d5db;
}

.attachment-chip .chip-thumb {
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 0.25rem;
  object-fit: cover;
  flex-shrink: 0;
}

.attachment-chip .chip-icon {
  flex-shrink: 0;
  color: #9ca3af;
}

/* Drag-and-drop highlight */
.input-container.drag-over {
  border-color: #3b82f6 !important;
  background: #eff6ff !important;
}

.dark .input-container.drag-over {
  background: #1e293b !important;
}

/* Attachment labels in user message */
.msg-attachments {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin-bottom: 0.375rem;
}

.msg-attachment-label {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.125rem 0.5rem;
  border-radius: 0.375rem;
  background: rgba(255, 255, 255, 0.15);
  font-size: 0.7rem;
  opacity: 0.85;
}

.msg-attachment-thumb {
  max-width: 200px;
  max-height: 150px;
  border-radius: 0.5rem;
  margin-bottom: 0.375rem;
  cursor: pointer;
}

/* Provider dropdown */
.provider-dropdown {
  position: absolute;
  bottom: 100%;
  right: 0;
  margin-bottom: 0.25rem;
  min-width: 10rem;
  background: white;
  border: 1px solid #e5e7eb;
  border-radius: 0.5rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  z-index: 50;
}

.dark .provider-dropdown {
  background: #1f2937;
  border-color: #374151;
}

.provider-dropdown-item {
  display: block;
  width: 100%;
  padding: 0.4rem 0.75rem;
  text-align: left;
  font-size: 0.8rem;
  color: #374151;
  transition: background-color 0.1s;
}

.provider-dropdown-item:hover {
  background: #f3f4f6;
}

.dark .provider-dropdown-item {
  color: #d1d5db;
}

.dark .provider-dropdown-item:hover {
  background: #374151;
}

.provider-dropdown-item.active {
  font-weight: 600;
  color: #2563eb;
}

.dark .provider-dropdown-item.active {
  color: #60a5fa;
}

/* Streaming cursor */
@keyframes blink {
  50% { opacity: 0; }
}

.streaming-cursor::after {
  content: "\25AE";
  animation: blink 1s step-end infinite;
  margin-left: 1px;
}