/* === FileMentionPopup === */
.file-mention-popup {
  position: absolute;
  z-index: 250;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 220px;
  max-width: 320px;
  max-height: 240px;
  overflow-y: auto;
  padding: var(--space-xs) 0;
}

.file-mention-popup-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.file-mention-popup-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  cursor: pointer;
  color: var(--text);
  font-size: 13px;
}

.file-mention-popup-item:hover {
  background: var(--card-hover);
}

.file-mention-popup-item--selected {
  background: color-mix(in srgb, var(--todo) 15%, transparent);
}

.file-mention-popup-item:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  background: var(--card-hover);
}

.file-mention-popup-icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  color: var(--text-muted);
  margin-top: 1px;
}

.file-mention-popup-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
  gap: 2px;
}

.file-mention-popup-item-name {
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-mention-popup-item-path {
  font-size: calc(var(--space-sm) + var(--space-xs) * 0.75);
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-mention-popup-empty {
  padding: var(--space-lg) var(--space-md);
  text-align: center;
  color: var(--text-muted);
  font-size: 12px;
}

.file-mention-popup-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg) var(--space-md);
}

.file-mention-popup-loading .spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--text-muted);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

@media (max-width: 768px) {
  .agent-mention-popup {
    max-width: 280px;
    min-width: 200px;
  }
}

/* Empty state */
.chat-empty-state {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  color: var(--text-secondary);
  padding: 24px;
  text-align: center;
}

.chat-empty-state h2 {
  font-size: 20px;
  color: var(--text);
  margin: 0;
}

.chat-empty-state-agent-select select {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  min-width: 200px;
}

/* New chat dialog */
.chat-new-dialog-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.chat-new-dialog {
  background: var(--bg-elevated, var(--bg));
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  width: 400px;
  max-width: 90vw;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.chat-new-dialog h3 {
  margin: 0;
  font-size: 18px;
}

.chat-new-dialog label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 13px;
  color: var(--text-secondary);
}

.chat-new-dialog input,
.chat-new-dialog select {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}

.chat-new-dialog-mode-toggle {
  display: flex;
  gap: var(--space-xs);
}

.chat-new-dialog-mode-btn {
  flex: 1;
  padding: var(--space-xs) var(--space-sm);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-muted);
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition-fast);
}

.chat-new-dialog-mode-btn:hover {
  background: color-mix(in srgb, var(--todo) 10%, transparent);
  color: var(--text);
  border-color: color-mix(in srgb, var(--todo) 40%, var(--border));
}

.chat-new-dialog-mode-btn--active {
  background: color-mix(in srgb, var(--todo) 18%, transparent);
  color: var(--text);
  border-color: color-mix(in srgb, var(--todo) 50%, var(--border));
  font-weight: 500;
}

.chat-new-dialog-mode-btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring-strong);
}

.chat-new-dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-sm);
}

.chat-view-delete-dialog-copy {
  margin: 0 0 var(--space-lg);
  color: var(--text-muted);
  font-size: calc(var(--space-sm) + var(--space-xs) * 1.5);
}

/* New Chat dialog model selector */
.chat-new-dialog-model-label {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* Agent list in new chat dialog */
.chat-new-dialog-loading,
.chat-new-dialog-empty {
  padding: 16px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 14px;
}

.chat-new-dialog-agent-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: 300px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 4px;
}

.chat-new-dialog-agent-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--text);
  font-size: 14px;
  text-align: left;
  cursor: pointer;
  transition: background 0.15s;
}

.chat-new-dialog-agent-item:hover {
  background: var(--bg-hover);
}

.chat-new-dialog-agent-item--selected {
  background: var(--accent-color-light, rgba(59, 130, 246, 0.1));
  border: 1px solid var(--accent-color, rgba(59, 130, 246, 0.3));
}

.chat-new-dialog-agent-name {
  flex: 1;
  font-weight: 500;
}

.chat-new-dialog-agent-role {
  font-size: 12px;
  color: var(--text-secondary);
  text-transform: capitalize;
}

/* Ensure dropdown portal renders above dialog */
.chat-new-dialog {
  overflow: visible;
}

@media (max-width: 768px) {
  .quick-chat-fab {
    right: 4px;
    bottom: calc(4px + var(--executor-footer-height-mobile, var(--executor-footer-height, 0px)) + var(--mobile-nav-height, 44px) + env(safe-area-inset-bottom, 0px));
  }

  .quick-chat-panel {
    right: 4px;
    left: 4px;
    width: auto;
    bottom: calc(60px + var(--executor-footer-height-mobile, var(--executor-footer-height, 0px)) + var(--mobile-nav-height, 44px) + env(safe-area-inset-bottom, 0px));
    height: min(520px, calc(100dvh - 120px));
  }

  /* ChatView New Chat + Delete dialogs should stay inset/compact on mobile.
     styles.css intentionally stretches .chat-new-dialog-backdrop for full-screen
     overlays, so scope the compact override to ChatView's modifier class only. */
  .chat-view-dialog-backdrop {
    align-items: center;
    justify-content: center;
    overflow-y: auto;
    padding: var(--space-md);
    padding-top: max(var(--space-md), env(safe-area-inset-top, 0px));
    padding-bottom: max(var(--space-md), env(safe-area-inset-bottom, 0px));
  }

  .chat-view-dialog {
    width: 100%;
    max-width: min(100%, calc(var(--space-xl) * 16));
    max-height: calc(100dvh - (var(--space-md) * 2) - env(safe-area-inset-top, 0px) - env(safe-area-inset-bottom, 0px));
    display: flex;
    flex-direction: column;
    overflow-y: auto;
  }
}