/* ── Chat Drawer — Contextual Chat Panel ── */

/* Backdrop */
.chat-drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 900;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s var(--ease-snappy);
}
.chat-drawer-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

/* Drawer panel */
.chat-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 420px;
  height: 100vh;
  z-index: 901;
  background: var(--s1);
  border-left: 1px solid var(--border);
  box-shadow: -8px 0 32px rgba(0,0,0,0.3);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.3s var(--ease-snappy);
}
.chat-drawer.open {
  transform: translateX(0);
}
.chat-drawer.expanded {
  width: min(820px, calc(100vw - 240px));
}

/* Header */
.chat-drawer-header {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--s1);
}
.chat-drawer-header-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--r-sm);
  background: rgba(59,130,246,0.08);
  color: var(--accent);
  flex-shrink: 0;
}
.chat-drawer-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.chat-drawer-title-sub {
  font-size: 0.72rem;
  color: var(--text-3);
  font-weight: 400;
  margin-left: 6px;
}
.chat-drawer-header-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}
.chat-drawer-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--r-sm);
  border: none;
  background: transparent;
  color: var(--text-3);
  cursor: pointer;
  transition: all 0.15s var(--ease-snappy);
}
.chat-drawer-btn:hover {
  background: var(--s2);
  color: var(--text);
}

/* Starters section */
.chat-drawer-starters {
  flex-shrink: 0;
  padding: 16px 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  border-bottom: 1px solid var(--border);
}
.chat-drawer-starters.hidden {
  display: none;
}
.chat-drawer-starters-label {
  width: 100%;
  font-size: 0.72rem;
  color: var(--text-3);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}
.chat-starter-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--s2);
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--text-2);
  font-size: 0.82rem;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.15s var(--ease-snappy);
  white-space: nowrap;
}
.chat-starter-btn:hover {
  background: var(--s3);
  border-color: var(--accent);
  color: var(--text);
}
.chat-starter-btn .starter-icon {
  color: var(--accent);
  display: flex;
  align-items: center;
}

/* Messages area */
.chat-drawer-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.chat-drawer-messages::-webkit-scrollbar {
  width: 4px;
}
.chat-drawer-messages::-webkit-scrollbar-track {
  background: transparent;
}
.chat-drawer-messages::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 2px;
}

/* Message bubbles */
.cdm-wrap {
  display: flex;
  flex-direction: column;
}
.cdm-wrap.user { align-items: flex-end; }
.cdm-wrap.assistant { align-items: flex-start; }
.cdm-meta {
  font-size: 0.68rem;
  color: var(--muted);
  margin-bottom: 3px;
  padding: 0 4px;
  display: flex;
  align-items: center;
  gap: 5px;
}
.cdm-meta img {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  object-fit: cover;
}
.cdm-bubble {
  padding: 10px 14px;
  max-width: 85%;
  font-size: 0.88rem;
  line-height: 1.6;
  word-break: break-word;
  overflow-wrap: break-word;
  overflow: hidden;
}
.cdm-bubble.user {
  background: var(--accent);
  color: #fff;
  border-radius: 14px 14px 2px 14px;
}
.cdm-bubble.assistant {
  background: var(--s2);
  color: var(--text);
  border-radius: 14px 14px 14px 2px;
}
/* Markdown typography inside assistant bubbles */
.cdm-bubble.assistant p { margin: 0 0 12px; line-height: 1.65; }
.cdm-bubble.assistant p:last-child { margin-bottom: 0; }
.cdm-bubble.assistant h1, .cdm-bubble.assistant h2, .cdm-bubble.assistant h3,
.cdm-bubble.assistant h4, .cdm-bubble.assistant h5 {
  margin: 18px 0 8px; font-weight: 600; color: var(--text);
  line-height: 1.3;
}
.cdm-bubble.assistant h1 { font-size: 1.05rem; }
.cdm-bubble.assistant h2 { font-size: 0.95rem; }
.cdm-bubble.assistant h3 { font-size: 0.88rem; }
.cdm-bubble.assistant h1:first-child, .cdm-bubble.assistant h2:first-child,
.cdm-bubble.assistant h3:first-child { margin-top: 0; }
.cdm-bubble.assistant ul, .cdm-bubble.assistant ol {
  margin: 8px 0 12px; padding-left: 20px;
}
.cdm-bubble.assistant li {
  margin-bottom: 6px; line-height: 1.55;
}
.cdm-bubble.assistant li:last-child { margin-bottom: 0; }
.cdm-bubble.assistant strong { color: var(--text); font-weight: 600; }
.cdm-bubble.assistant hr {
  border: none; border-top: 1px solid var(--border);
  margin: 14px 0;
}
.cdm-bubble.assistant table {
  width: 100%; border-collapse: collapse;
  margin: 12px 0; font-size: 0.8rem;
}
.cdm-bubble.assistant th, .cdm-bubble.assistant td {
  padding: 8px 10px; text-align: left;
  border-bottom: 1px solid var(--border);
}
.cdm-bubble.assistant th {
  font-weight: 600; color: var(--text); font-size: 0.75rem;
  text-transform: uppercase; letter-spacing: 0.03em;
  background: var(--s3);
}
.cdm-bubble.assistant tr:last-child td { border-bottom: none; }
.cdm-bubble.assistant blockquote {
  margin: 10px 0; padding: 8px 14px;
  border-left: 3px solid var(--accent);
  background: rgba(59,130,246,0.04);
  color: var(--text-2);
  font-size: 0.84rem;
}
.cdm-bubble.assistant code {
  background: var(--s3);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 0.82rem;
}
.cdm-bubble.assistant pre {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: 10px 12px;
  overflow-x: auto;
  margin: 12px 0;
}
.cdm-bubble.assistant pre code {
  background: none;
  padding: 0;
}

/* Thinking indicator */
.cdm-thinking {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--s2);
  padding: 10px 14px;
  border-radius: 14px 14px 14px 2px;
  font-size: 0.88rem;
  color: var(--muted);
}
.cdm-thinking-timer {
  font-size: 0.72rem;
  opacity: 0.6;
}
.cdm-thinking-cancel {
  padding: 3px 10px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--r);
  color: var(--red);
  font-size: 0.72rem;
  cursor: pointer;
  margin-left: 4px;
  font-family: inherit;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: all 0.15s;
}
.cdm-thinking-cancel:hover {
  background: var(--red);
  color: #fff;
}

/* Empty state */
.chat-drawer-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--text-3);
  padding: 40px 20px;
  text-align: center;
}
.chat-drawer-empty-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(59,130,246,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}
.chat-drawer-empty-title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-2);
}
.chat-drawer-empty-desc {
  font-size: 0.78rem;
  color: var(--text-3);
  max-width: 260px;
  line-height: 1.5;
}

/* Input bar */
.chat-drawer-input-bar {
  flex-shrink: 0;
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  background: var(--s1);
}
.chat-drawer-input {
  flex: 1;
  padding: 10px 14px;
  background: var(--s2);
  border: 1px solid var(--border);
  border-radius: var(--r);
  color: var(--text);
  font-size: 0.85rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s;
  resize: none;
  overflow-y: hidden;
  line-height: 1.5;
  min-height: 38px;
  max-height: 120px;
}
.chat-drawer-input::placeholder {
  color: var(--text-3);
}
.chat-drawer-input:focus {
  border-color: var(--accent);
}
.chat-drawer-send {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--r);
  border: none;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  flex-shrink: 0;
  transition: all 0.15s var(--ease-snappy);
}
.chat-drawer-send:hover {
  background: var(--accent2);
  transform: scale(1.04);
}
.chat-drawer-send:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

/* FAB */
.chat-drawer-fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 899;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: none;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(59,130,246,0.4);
  transition: all 0.2s var(--ease-snappy);
}
.chat-drawer-fab:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 24px rgba(59,130,246,0.5);
}
.chat-drawer-fab.hidden {
  display: none;
}
.chat-drawer-fab .fab-icon {
  display: flex;
  align-items: center;
  transition: transform 0.25s var(--ease-snappy);
}
.chat-drawer-fab.open .fab-icon {
  transform: rotate(90deg);
}

/* Starter edit mode */
.chat-drawer-edit-overlay {
  position: absolute;
  inset: 0;
  background: var(--s1);
  z-index: 5;
  display: flex;
  flex-direction: column;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}
.chat-drawer-edit-overlay.active {
  opacity: 1;
  pointer-events: auto;
}
.chat-drawer-edit-header {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.chat-drawer-edit-header-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
}
.chat-drawer-edit-list {
  flex: 1;
  overflow-y: auto;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.starter-edit-item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--s2);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: 10px 12px;
}
.starter-edit-item .drag-handle {
  color: var(--text-3);
  cursor: grab;
  flex-shrink: 0;
  display: flex;
}
.starter-edit-item input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text);
  font-size: 0.82rem;
  font-family: inherit;
  outline: none;
}
.starter-edit-item input::placeholder {
  color: var(--text-3);
}
.starter-edit-delete {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--r-sm);
  border: none;
  background: transparent;
  color: var(--text-3);
  cursor: pointer;
  flex-shrink: 0;
  transition: all 0.15s;
}
.starter-edit-delete:hover {
  background: rgba(248,113,113,0.1);
  color: var(--red);
}
.starter-add-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px;
  border: 1px dashed var(--border);
  border-radius: var(--r-sm);
  background: transparent;
  color: var(--text-3);
  font-size: 0.82rem;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.15s;
}
.starter-add-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(59,130,246,0.04);
}
.chat-drawer-edit-footer {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  padding: 14px 20px;
  border-top: 1px solid var(--border);
}
.chat-drawer-edit-footer button {
  padding: 8px 18px;
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  background: var(--s2);
  color: var(--text);
  font-size: 0.82rem;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.15s;
}
.chat-drawer-edit-footer button:hover {
  background: var(--s3);
}
.chat-drawer-edit-footer button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.chat-drawer-edit-footer button.primary:hover {
  background: var(--accent2);
}

/* Keyboard shortcut hint */
.chat-drawer-shortcut {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 0.68rem;
  color: var(--text-3);
  margin-left: auto;
}
.chat-drawer-shortcut kbd {
  background: var(--s2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
  font-size: 0.66rem;
  font-family: inherit;
}

/* Responsive */
@media (max-width: 768px) {
  .chat-drawer {
    width: 100vw;
  }
  .chat-drawer-fab {
    bottom: 16px;
    right: 16px;
    width: 48px;
    height: 48px;
  }
  .chat-drawer-shortcut {
    display: none;
  }
}