/* MCP 服务器 + 专家中心（Phase 5D）：Warm Paper 全令牌配色。
   覆盖组件：McpPanel / ExpertsCenter / ExpertPicker，以及对话头部的专家入口。
   规则来自 docs/design-system.md：留白优先、衬线标题、语义色只出现在状态语境。 */

/* ---------- 通用面板骨架 ---------- */
.experts-center {
  flex: 1;
  min-width: 0;
  overflow-y: auto;
  padding: 36px 48px 48px;
}

.mcp-panel {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.panel-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 4px;
}

.panel-title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
}

.panel-desc {
  margin: 8px 0 0;
  max-width: 60ch;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-secondary);
}

.panel-error {
  margin: 0;
  padding: 10px 14px;
  border: 1px solid var(--danger);
  border-radius: var(--radius-control);
  background: var(--bg-sunken);
  color: var(--danger);
  font-size: 13px;
  line-height: 1.6;
}

.panel-empty {
  margin: 0;
  padding: 28px 0;
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--text-tertiary);
}

.inline-code {
  padding: 1px 6px;
  border-radius: 6px;
  background: var(--bg-sunken);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 12.5px;
}

/* ---------- 按钮（补充 App.css 的 .btn-primary/.btn-secondary）---------- */
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 12px;
  border: 1px solid transparent;
  border-radius: var(--radius-control);
  background: transparent;
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease);
}

.btn-ghost:hover:not(:disabled) {
  background: var(--bg-elevated);
  color: var(--text);
}

.btn-ghost:disabled {
  opacity: 0.55;
  cursor: default;
}

.btn-danger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 12px;
  border: 1px solid var(--danger);
  border-radius: var(--radius-control);
  background: transparent;
  color: var(--danger);
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease);
}

.btn-danger:hover {
  background: var(--bg-elevated);
}

.btn-icon {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border: 1px solid transparent;
  border-radius: var(--radius-control);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background-color var(--dur) var(--ease);
}

.btn-icon:hover {
  background: var(--bg-elevated);
  color: var(--text);
}

.mcp-panel .btn-primary,
.experts-center .btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 36px;
  padding: 0 18px;
}

/* ---------- 表单 ---------- */
.mcp-form,
.expert-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 20px 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--bg-elevated);
}

.mcp-form-title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 600;
  color: var(--text);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}

.field-note {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--text-tertiary);
}

.field-input {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius-control);
  background: var(--bg-sunken);
  color: var(--text);
  font-family: inherit;
  font-size: 13.5px;
  line-height: 1.6;
  resize: vertical;
  transition: border-color var(--dur) var(--ease);
}

.field-input:focus {
  outline: none;
  border-color: var(--accent);
}

.field-mono {
  font-family: var(--font-mono);
  font-size: 12.5px;
}

.mcp-env-row {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 8px;
  align-items: center;
}

.mcp-form-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.expert-form-row {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 16px;
  align-items: start;
}

.expert-emoji-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.expert-emoji {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--border);
  border-radius: var(--radius-control);
  background: var(--bg-sunken);
  font-size: 17px;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.expert-emoji:hover {
  background: var(--bg-elevated);
}

.expert-emoji.is-active {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.expert-prompt {
  font-family: var(--font-sans);
  line-height: 1.75;
}

/* ---------- MCP 服务器卡片 ---------- */
.mcp-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.mcp-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--bg-elevated);
}

.mcp-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.mcp-card-title {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.mcp-name {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
}

.mcp-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  color: var(--text-secondary);
}

.mcp-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-tertiary);
}

.mcp-status.is-connected .mcp-status-dot {
  background: var(--success);
}

.mcp-status.is-connecting .mcp-status-dot {
  background: var(--warning);
}

.mcp-status.is-error .mcp-status-dot {
  background: var(--danger);
}

.mcp-tools-count {
  font-size: 12.5px;
  color: var(--text-tertiary);
  font-variant-numeric: tabular-nums;
}

.mcp-card-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.mcp-command {
  margin: 0;
  overflow-wrap: anywhere;
}

.mcp-enabled {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
}

.mcp-error {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--danger);
}

.mcp-confirm {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  color: var(--text-secondary);
}

/* ---------- MCP 工具清单 ---------- */
.mcp-tools {
  border-top: 1px solid var(--border);
  padding-top: 10px;
}

.mcp-tools-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 6px 4px 0;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
}

.mcp-tools-toggle:hover {
  color: var(--text);
}

.mcp-tool-list {
  display: flex;
  flex-direction: column;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
}

.mcp-tool {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 9px 0;
  border-bottom: 1px solid var(--border);
}

.mcp-tool:last-child {
  border-bottom: none;
}

.mcp-tool-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.mcp-tool-name {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text);
  overflow-wrap: anywhere;
}

.mcp-tool-desc {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--text-secondary);
  overflow-wrap: anywhere;
}

.mcp-tool-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
  padding: 5px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-control);
  background: var(--bg-sunken);
  color: var(--text-secondary);
  font-size: 12.5px;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.mcp-tool-toggle input {
  accent-color: var(--accent);
}

.mcp-tool-toggle.is-on {
  border-color: var(--success);
  background: var(--bg-elevated);
  color: var(--text);
}

/* ---------- 专家中心 ---------- */
.experts-tabs {
  display: inline-flex;
  gap: 4px;
  padding: 3px;
  border: 1px solid var(--border);
  border-radius: var(--radius-control);
  background: var(--bg-sunken);
}

.experts-tab {
  height: 30px;
  padding: 0 14px;
  border: none;
  border-radius: calc(var(--radius-control) - 2px);
  background: transparent;
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease);
}

.experts-tab.is-active {
  background: var(--bg-elevated);
  color: var(--text);
}

.experts-actions {
  margin-bottom: 16px;
}

.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

/* hover 统一（描边加深 + 轻上浮）在 App.css；transition 也集中在那里定义 */
.expert-card {
  display: flex;
  gap: 14px;
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--bg-elevated);
}

.expert-card.is-active {
  border-color: var(--accent);
}

.expert-card-emoji {
  font-size: 30px;
  line-height: 1.2;
}

.expert-card-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.expert-card-name {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
}

.expert-card-desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-secondary);
}

.expert-card-model {
  margin: 0;
  font-size: 12.5px;
  color: var(--text-tertiary);
}

.expert-card-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  margin-top: 4px;
}

/* 状态徽章：与全站徽章同尺寸同字重 */
.expert-badge {
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--bg-sunken);
  color: var(--text-tertiary);
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 500;
}

.expert-badge.is-custom {
  color: var(--text-secondary);
}

.experts-foot {
  margin: 18px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--text-tertiary);
}

/* ---------- 对话头部的专家选择器 ---------- */
.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 24px;
  border-bottom: 1px solid var(--border);
}

.chat-header-title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
}

.expert-picker {
  position: relative;
}

.expert-picker-trigger {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 32px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-control);
  background: transparent;
  color: var(--text);
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease);
}

.expert-picker-trigger:hover {
  background: var(--bg-elevated);
}

.expert-picker-emoji {
  font-size: 15px;
}

.expert-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  z-index: 20;
  width: 300px;
  max-height: 360px;
  overflow-y: auto;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-float);
  background: var(--bg-elevated);
  box-shadow: var(--shadow-float);
}

.expert-menu-title {
  margin: 2px 6px 8px;
  font-size: 12px;
  color: var(--text-tertiary);
}

.expert-option {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  width: 100%;
  padding: 8px 10px;
  border: none;
  border-radius: var(--radius-control);
  background: transparent;
  color: var(--text);
  font-family: inherit;
  text-align: left;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease);
}

.expert-option:hover {
  background: var(--accent-soft);
}

.expert-option.is-active {
  background: var(--accent-soft);
}

.expert-option-emoji {
  font-size: 18px;
  line-height: 1.3;
}

.expert-option-body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.expert-option-name {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13.5px;
  font-weight: 500;
}

.expert-option-desc {
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-secondary);
}

.expert-menu-foot {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 8px 6px 2px;
  font-size: 12px;
  color: var(--text-tertiary);
}

@media (prefers-reduced-motion: reduce) {
  .mcp-card,
  .expert-card,
  .expert-menu,
  .expert-option,
  .btn-ghost,
  .mcp-tool-toggle {
    transition: none;
  }
}