/* === Chat Variables === */
:root {
  --chat-h: 360px;
}

/* === Shell adjustment when chat pane is open === */
@media (min-width: 769px) {
  #shell.chat-open {
    height: calc(100vh - var(--chat-h));
    grid-template-rows: calc(100vh - var(--chat-h));
  }
  #shell.chat-open.panel-open {
    grid-template-columns: var(--sidebar-w) 0px 1fr var(--panel-w);
  }
}

/* Move bottom controls above chat pane when open */
#shell.chat-open ~ #bottom-controls {
  bottom: calc(var(--chat-h) + 12px);
}

/* === Chat Bubble (now inside #bottom-controls, styled in playground.css) === */
#shell.chat-open ~ #bottom-controls #chat-bubble {
  display: none;
}

/* === Chat Pane === */
#chat-pane {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--chat-h);
  z-index: 800;
  background: var(--bg);
  border-top: 1px solid var(--amber-dim);
  flex-direction: column;
}

#chat-pane.open {
  display: flex;
}

/* === Resize Handle === */
#chat-resize {
  height: 5px;
  cursor: ns-resize;
  background: transparent;
  flex-shrink: 0;
  transition: background 0.15s;
}

#chat-resize:hover {
  background: rgba(255, 176, 0, 0.15);
}

/* === Header === */
#chat-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

#chat-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--cyan);
  text-shadow: 0 0 8px var(--cyan-glow);
  margin-right: auto;
}

#chat-model {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--amber);
  font-family: var(--font);
  font-size: 11px;
  padding: 2px 4px;
  cursor: pointer;
}

#chat-model option {
  background: var(--bg);
  color: var(--amber);
}

#chat-header button {
  background: none;
  border: 1px solid var(--border);
  color: var(--amber-dim);
  font-family: var(--font);
  font-size: 12px;
  padding: 2px 8px;
  cursor: pointer;
  line-height: 1.4;
  transition: color 0.12s, border-color 0.12s;
}

#chat-header button:hover {
  color: var(--amber);
  border-color: var(--amber);
}

/* === Token Bar === */
#chat-token-bar {
  padding: 3px 12px;
  font-size: 9px;
  color: var(--amber-dim);
  opacity: 0.6;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  letter-spacing: 0.5px;
}

#chat-token-bar .cached {
  color: var(--cyan-dim);
}

#chat-token-bar .chat-cost {
  color: var(--amber);
  font-weight: bold;
}

#chat-token-bar .chat-be {
  color: var(--amber-dim);
}

#chat-token-bar .chat-be-ok {
  color: var(--cyan);
}

/* === Chat Body (flex container for sidebar + main) === */
#chat-body {
  display: flex;
  flex: 1;
  overflow: hidden;
  min-height: 0;
}

#chat-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

/* === Sidebar === */
#chat-sidebar {
  width: 0;
  overflow: hidden;
  border-right: none;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: width 0.2s ease, border-right 0.2s ease;
  background: var(--bg);
}

#chat-pane.sidebar-open #chat-sidebar {
  width: 220px;
  border-right: 1px solid var(--border);
}

#chat-sidebar-search {
  padding: 6px 8px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

#chat-sidebar-filter {
  width: 100%;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--amber);
  font-family: var(--font);
  font-size: 11px;
  padding: 4px 6px;
  outline: none;
  caret-color: var(--cyan);
  box-sizing: border-box;
}

#chat-sidebar-filter::placeholder {
  color: var(--amber-dim);
}

#chat-sidebar-list {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
}

#chat-sidebar-empty {
  display: none;
  padding: 12px 8px;
  font-size: 11px;
  color: var(--amber-dim);
  text-align: center;
}

#chat-sidebar-empty.visible {
  display: block;
}

/* Sidebar history items */
.chat-hist-item {
  position: relative;
  padding: 8px 8px 8px 10px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.12s;
  border-left: 3px solid transparent;
}

.chat-hist-item:hover {
  background: rgba(255, 176, 0, 0.05);
}

.chat-hist-item.active {
  border-left-color: var(--cyan);
  background: rgba(0, 229, 255, 0.06);
}

.chat-hist-title {
  font-size: 11px;
  color: var(--amber);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 2px;
  padding-right: 40px;
}

.chat-hist-meta {
  font-size: 9px;
  color: var(--amber-dim);
  letter-spacing: 0.3px;
}

/* Hover-reveal action buttons */
.chat-hist-actions {
  position: absolute;
  top: 6px;
  right: 4px;
  display: none;
  gap: 2px;
}

.chat-hist-item:hover .chat-hist-actions {
  display: flex;
}

.chat-hist-actions button {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--amber-dim);
  font-family: var(--font);
  font-size: 11px;
  padding: 0 4px;
  cursor: pointer;
  line-height: 1.6;
  transition: color 0.12s, border-color 0.12s;
}

.chat-hist-actions button:hover {
  color: var(--amber);
  border-color: var(--amber);
}

.chat-hist-actions button.hist-delete:hover {
  color: #ff4444;
  border-color: #ff4444;
}

/* Inline delete confirmation */
.chat-hist-confirm {
  font-size: 11px;
  color: var(--amber);
  padding: 8px;
}

.chat-hist-confirm span {
  margin-right: 8px;
}

.chat-hist-confirm button {
  background: none;
  border: 1px solid var(--border);
  color: var(--amber-dim);
  font-family: var(--font);
  font-size: 10px;
  padding: 1px 8px;
  cursor: pointer;
  margin-left: 4px;
  transition: color 0.12s, border-color 0.12s;
}

.chat-hist-confirm button:hover {
  color: var(--amber);
  border-color: var(--amber);
}

.chat-hist-confirm button.confirm-yes:hover {
  color: #ff4444;
  border-color: #ff4444;
}

/* Toggle button highlight when sidebar open */
#chat-history-toggle {
  font-size: 14px;
  padding: 2px 6px;
}

#chat-pane.sidebar-open #chat-history-toggle {
  color: var(--cyan);
  border-color: var(--cyan);
}

/* === Messages === */
#chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.chat-msg {
  font-size: 12px;
  line-height: 1.6;
  color: var(--amber);
  max-width: 100%;
}

.chat-role {
  font-weight: 700;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  display: block;
  margin-bottom: 4px;
}

.chat-user .chat-role { color: var(--amber-dim); }
.chat-ai .chat-role { color: var(--cyan); }

.chat-user-text {
  white-space: pre-wrap;
  word-break: break-word;
}

/* === AI Content Markdown === */
.chat-ai-content p {
  margin: 0 0 8px;
}

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

.chat-ai-content strong {
  color: var(--cyan);
}

.chat-ai-content code {
  background: rgba(255, 176, 0, 0.08);
  border: 1px solid var(--border);
  padding: 0 4px;
  font-size: 11px;
}

.chat-ai-content h3,
.chat-ai-content h4,
.chat-ai-content h5,
.chat-ai-content h6 {
  color: var(--cyan);
  font-size: 12px;
  margin: 12px 0 4px;
}

.chat-ai-content ul,
.chat-ai-content ol {
  margin: 4px 0 8px 0;
  padding: 0 0 0 20px;
}

.chat-ai-content li {
  margin: 2px 0;
}

.chat-ai-content ul li::marker {
  color: var(--cyan);
}

.chat-ai-content ol li::marker {
  color: var(--cyan);
}

/* === Tables === */
.chat-ai-content table {
  border-collapse: collapse;
  margin: 8px 0;
  font-size: 11px;
  width: 100%;
  overflow-x: auto;
  display: block;
}

.chat-ai-content th,
.chat-ai-content td {
  border: 1px solid var(--border);
  padding: 4px 8px;
  text-align: left;
  white-space: nowrap;
}

.chat-ai-content th {
  color: var(--cyan);
  border-color: var(--cyan-dim);
  font-weight: 700;
}

/* === Code Blocks === */
.chat-code-wrap {
  position: relative;
  margin: 8px 0;
}

.chat-code {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  padding: 10px;
  font-family: var(--font);
  font-size: 11px;
  line-height: 1.5;
  overflow-x: auto;
  white-space: pre;
  color: var(--amber);
  margin: 0;
}

.chat-code-copy {
  position: absolute;
  top: 4px;
  right: 4px;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--amber-dim);
  font-family: var(--font);
  font-size: 10px;
  padding: 1px 6px;
  cursor: pointer;
  line-height: 1.4;
  transition: color 0.12s, border-color 0.12s;
}

.chat-code-copy:hover {
  color: var(--amber);
  border-color: var(--amber);
}

.chat-code-playground {
  position: absolute;
  top: 4px;
  right: 52px;
  background: var(--bg);
  border: 1px solid var(--cyan-dim);
  color: var(--cyan-dim);
  font-family: var(--font);
  font-size: 10px;
  padding: 1px 6px;
  cursor: pointer;
  line-height: 1.4;
  transition: color 0.12s, border-color 0.12s;
}

.chat-code-playground:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

/* YAML syntax highlighting in code blocks */
.chat-code .y-key     { color: var(--cyan); }
.chat-code .y-colon   { color: var(--amber-dim); }
.chat-code .y-str     { color: var(--amber); }
.chat-code .y-num     { color: #f8a; }
.chat-code .y-bool    { color: #f8a; }
.chat-code .y-bullet  { color: var(--cyan-dim); }
.chat-code .y-pipe    { color: var(--cyan-dim); }
.chat-code .y-comment { color: var(--amber-dim); font-style: italic; }
.chat-code .y-tag     { color: #c9a; }
.chat-code .y-kw      { color: var(--cyan); font-weight: 700; }
.chat-code .y-slit    { color: #a8e6a0; }
.chat-code .y-cmt     { color: var(--amber-dim); font-style: italic; }

/* === Copy Response Button === */
.chat-copy-msg {
  background: none;
  border: none;
  color: var(--amber-dim);
  font-family: var(--font);
  font-size: 10px;
  cursor: pointer;
  padding: 2px 0;
  margin-top: 4px;
  transition: color 0.12s;
}

.chat-copy-msg:hover {
  color: var(--amber);
}

/* === Page Links === */
.chat-page-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px dotted var(--cyan-dim);
  transition: color 0.12s, text-shadow 0.12s;
}

.chat-page-link:hover {
  text-shadow: 0 0 6px var(--cyan-glow);
}

/* === File Preview === */
#chat-file-preview {
  display: none;
  flex-wrap: wrap;
  gap: 6px;
  padding: 4px 12px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.chat-file-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid var(--cyan-dim);
  padding: 3px 8px;
  font-size: 11px;
  color: var(--cyan);
}

.chat-file-icon {
  font-size: 12px;
}

.chat-file-name {
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chat-file-remove {
  background: none;
  border: none;
  color: var(--amber-dim);
  font-family: var(--font);
  font-size: 14px;
  cursor: pointer;
  padding: 0 2px;
  line-height: 1;
  transition: color 0.12s;
}

.chat-file-remove:hover {
  color: #ff4444;
}

/* === Input Bar === */
#chat-input-bar {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding: 8px 12px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

#chat-attach {
  background: none;
  border: 1px solid var(--border);
  color: var(--amber-dim);
  font-size: 14px;
  padding: 4px 6px;
  cursor: pointer;
  flex-shrink: 0;
  line-height: 1;
  transition: color 0.12s, border-color 0.12s;
}

#chat-attach:hover {
  color: var(--amber);
  border-color: var(--amber);
}

#chat-input {
  flex: 1;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--amber);
  font-family: var(--font);
  font-size: 12px;
  padding: 6px 8px;
  resize: none;
  outline: none;
  line-height: 1.4;
  min-height: 28px;
  max-height: 120px;
  caret-color: var(--cyan);
}

#chat-input::placeholder {
  color: var(--amber-dim);
}

#chat-send {
  background: none;
  border: 1px solid var(--amber-dim);
  color: var(--amber);
  font-family: var(--font);
  font-size: 12px;
  padding: 6px 14px;
  cursor: pointer;
  flex-shrink: 0;
  line-height: 1.4;
  transition: border-color 0.12s, background 0.12s;
}

#chat-send:hover {
  border-color: var(--amber);
  background: rgba(255, 176, 0, 0.08);
}

#chat-send:disabled {
  opacity: 0.4;
  cursor: default;
}

/* === Settings Overlay === */
#chat-settings {
  display: none;
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  z-index: 10;
  align-items: center;
  justify-content: center;
}

#chat-settings.open {
  display: flex;
}

#chat-settings-box {
  background: var(--bg);
  border: 1px solid var(--cyan-dim);
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.15);
  padding: 20px;
  width: 520px;
  max-width: 90%;
}

.chat-settings-title {
  color: var(--cyan);
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 16px;
  text-shadow: 0 0 8px var(--cyan-glow);
}

.chat-settings-label {
  display: block;
  color: var(--amber-dim);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.chat-key-row {
  display: flex;
  gap: 6px;
  margin-bottom: 6px;
}

#chat-key-input,
#chat-ttl-input {
  flex: 1;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--amber);
  font-family: var(--font);
  font-size: 12px;
  padding: 6px 8px;
  outline: none;
  caret-color: var(--cyan);
}

#chat-ttl-input {
  max-width: 120px;
}

#chat-key-toggle {
  background: none;
  border: 1px solid var(--border);
  color: var(--amber-dim);
  font-family: var(--font);
  font-size: 11px;
  padding: 4px 8px;
  cursor: pointer;
  line-height: 1.4;
  transition: color 0.12s, border-color 0.12s;
}

#chat-key-toggle:hover {
  color: var(--amber);
  border-color: var(--amber);
}

.chat-key-note {
  color: var(--amber-dim);
  font-size: 10px;
  margin-bottom: 14px;
}

.chat-key-note a {
  color: var(--green);
  text-decoration: underline;
}

.chat-key-note a:hover {
  color: var(--amber);
}

.chat-checkbox-row {
  margin: 4px 0;
  font-size: 11px;
  color: var(--amber);
}

.chat-checkbox-row input[type="checkbox"] {
  accent-color: var(--cyan);
  margin-right: 6px;
  vertical-align: middle;
}

.chat-settings-actions {
  display: flex;
  gap: 8px;
}

.chat-settings-actions button {
  background: none;
  border: 1px solid var(--border);
  color: var(--amber);
  font-family: var(--font);
  font-size: 12px;
  padding: 4px 14px;
  cursor: pointer;
  line-height: 1.4;
  transition: border-color 0.12s, background 0.12s;
}

.chat-settings-actions button:hover {
  border-color: var(--amber);
  background: rgba(255, 176, 0, 0.08);
}

/* === Status & Error Messages === */
.chat-status {
  color: var(--amber-dim);
  font-size: 11px;
  font-style: italic;
}

.chat-error {
  color: #ff4444;
  font-size: 11px;
  font-style: italic;
}

/* === Welcome Message === */
.chat-welcome a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px dotted var(--cyan-dim);
  transition: text-shadow 0.12s;
}

.chat-welcome a:hover {
  text-shadow: 0 0 6px var(--cyan-glow);
}

/* === Thinking: Scramble Status Text === */
.chat-status.scramble {
  font-style: normal;
  letter-spacing: 1px;
  color: var(--amber);
  text-shadow: 0 0 4px var(--amber-glow);
}

/* === Desktop Only === */
@media (max-width: 768px) {
  #chat-bubble {
    display: none !important;
  }
  #chat-pane {
    display: none !important;
  }
}