/**
 * AI 助手页面样式
 */

.ast-page {
  display: flex;
  flex-direction: row;
  height: 100%;
  overflow: hidden;
  padding: 0 !important;
}

/* ── 侧边栏 ── */
.ast-sidebar {
  width: 0;
  min-width: 0;
  border-right: none;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow: hidden;
  transition: width 0.2s ease, min-width 0.2s ease, border-right 0.2s ease;
}

.ast-sidebar.open {
  width: 240px;
  min-width: 240px;
  border-right: 1px solid var(--border-primary);
}

.ast-sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-primary);
}

.ast-sidebar-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  display: flex;
}

.ast-sidebar-btn:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.ast-session-list {
  flex: 1;
  overflow-y: auto;
  padding: 4px;
}

.ast-session-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition-fast);
  gap: 4px;
}

.ast-session-item:hover {
  background: var(--bg-card-hover);
}

.ast-session-item.active {
  background: var(--accent-muted);
  color: var(--accent);
}

.ast-session-title {
  flex: 1;
  font-size: 13px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ast-session-delete {
  opacity: 0;
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  font-size: 16px;
  padding: 0 4px;
  border-radius: 4px;
  flex-shrink: 0;
}

.ast-session-item:hover .ast-session-delete {
  opacity: 1;
}

.ast-session-delete:hover {
  color: var(--error);
  background: var(--error-muted);
}

.ast-empty {
  text-align: center;
  color: var(--text-tertiary);
  font-size: 13px;
  padding: 20px;
}

/* ── 主区域 ── */
.ast-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  position: relative;
}

.ast-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--border-primary);
  flex-shrink: 0;
  gap: 8px;
}

.ast-header-left {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.ast-header-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.ast-toggle-sidebar {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  display: flex;
}

.ast-toggle-sidebar:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.ast-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.ast-model-badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  font-family: var(--font-mono);
}

.ast-model-badge.configured {
  background: var(--success-muted);
  color: var(--success);
}

.ast-model-badge.unconfigured {
  background: var(--warning-muted);
  color: var(--warning);
}

/* ── 消息区域 ── */
.ast-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-lg) var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.ast-msg {
  display: flex;
  max-width: 85%;
}

.ast-msg-user {
  align-self: flex-end;
}

.ast-msg-ai {
  align-self: flex-start;
  flex-direction: column;
  max-width: 85%;
}

.ast-msg-bubble {
  padding: 10px 14px;
  border-radius: var(--radius-lg);
  font-size: 14px;
  line-height: 1.6;
  word-break: break-word;
}

.ast-msg-bubble-user {
  background: var(--accent);
  color: var(--text-inverse);
  border-bottom-right-radius: 4px;
  white-space: pre-wrap;
}

.ast-msg-bubble-ai {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-primary);
  border-bottom-left-radius: 4px;
}

.ast-msg-bubble-ai p {
  margin: 0 0 8px 0;
}

.ast-msg-bubble-ai p:last-child {
  margin-bottom: 0;
}

.ast-msg-bubble-ai pre {
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  overflow-x: auto;
  font-size: 13px;
  margin: 8px 0;
}

.ast-msg-bubble-ai code {
  font-family: var(--font-mono);
  font-size: 13px;
}

.ast-msg-bubble-ai code:not(pre code) {
  background: var(--bg-tertiary);
  padding: 1px 5px;
  border-radius: 3px;
}

.ast-msg-bubble-ai ul, .ast-msg-bubble-ai ol {
  margin: 4px 0;
  padding-left: 20px;
}

.ast-msg-bubble-ai li {
  margin: 2px 0;
}

.ast-msg-bubble-ai strong {
  font-weight: 600;
}

.ast-msg-bubble-ai h1, .ast-msg-bubble-ai h2, .ast-msg-bubble-ai h3 {
  margin: 12px 0 6px 0;
  font-weight: 600;
}

.ast-msg-bubble-ai h1 { font-size: 18px; }
.ast-msg-bubble-ai h2 { font-size: 16px; }
.ast-msg-bubble-ai h3 { font-size: 14px; }

/* 消息元信息 + 复制按钮 */
.ast-msg-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--text-tertiary);
  margin-top: 4px;
  padding: 0 4px;
}
.ast-msg-user .ast-msg-meta { justify-content: flex-end; }
.ast-msg-ai .ast-msg-meta { justify-content: flex-start; }

.ast-msg .msg-copy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 4px;
  opacity: 0;
  transition: opacity 0.15s, color 0.15s, background 0.15s;
}
.ast-msg:hover .msg-copy-btn,
.ast-msg .msg-copy-btn:focus { opacity: 1; }
.ast-msg .msg-copy-btn:hover { color: var(--text-primary); background: var(--bg-tertiary); }
.ast-msg .msg-copy-btn.copied { opacity: 1; color: var(--success); }

/* 流式光标 */
.ast-cursor {
  animation: ast-blink 1s infinite;
  color: var(--accent);
}

@keyframes ast-blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

.ast-typing {
  color: var(--text-tertiary);
  font-style: italic;
}

/* ── 输入区 ── */
.ast-input-area {
  padding: var(--space-md) var(--space-xl) var(--space-lg);
  border-top: 1px solid var(--border-primary);
  flex-shrink: 0;
}

.ast-input-wrap {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: 8px 12px;
  transition: border-color var(--transition-fast);
}

.ast-input-wrap:focus-within {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-muted);
}

.ast-textarea {
  flex: 1;
  border: none;
  background: none;
  resize: none;
  font-size: 14px;
  font-family: var(--font-sans);
  color: var(--text-primary);
  line-height: 1.5;
  outline: none;
  min-height: 24px;
  max-height: 200px;
}

.ast-textarea::placeholder {
  color: var(--text-tertiary);
}

.ast-send-btn {
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: background var(--transition-fast);
}

.ast-send-btn:hover {
  background: var(--accent-hover);
}

.ast-send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.ast-input-hint {
  font-size: 11px;
  color: var(--text-tertiary);
  margin-top: 6px;
  text-align: center;
}

/* ── 欢迎页 ── */
.ast-welcome {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  gap: 12px;
  padding: 40px 20px;
  text-align: center;
}

.ast-welcome-icon {
  color: var(--accent);
  opacity: 0.7;
}

.ast-welcome h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.ast-welcome p {
  color: var(--text-secondary);
  font-size: 14px;
  margin: 0;
}

.ast-quick-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
  justify-content: center;
}

.ast-quick-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: var(--radius-lg);
  font-size: 13px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.ast-quick-btn:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--accent);
}

/* 首次引导提示 */
.ast-page-guide {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  padding: 10px 14px;
  background: var(--accent-muted, rgba(99, 102, 241, 0.08));
  border: 1px solid var(--accent-border, rgba(99, 102, 241, 0.2));
  border-radius: var(--radius-lg);
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-secondary);
  text-align: left;
  width: 100%;
  max-width: 560px;
  position: relative;
}
.ast-guide-badge {
  flex-shrink: 0;
  background: var(--accent);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 10px;
  white-space: nowrap;
}
.ast-guide-text {
  flex: 1;
  min-width: 0;
}
.ast-guide-text b {
  color: var(--text-primary);
}
.ast-guide-close {
  flex-shrink: 0;
  background: none;
  border: none;
  color: var(--text-tertiary);
  font-size: 18px;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
  line-height: 1;
}
.ast-guide-close:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

/* ── Skills 网格 ── */
.ast-skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-top: 20px;
  width: 100%;
  max-width: 560px;
}

.ast-skill-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: left;
}

.ast-skill-card:hover {
  border-color: var(--accent);
  background: var(--accent-muted);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.ast-skill-icon {
  font-size: 24px;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
}

.ast-skill-card:hover .ast-skill-icon {
  background: var(--accent-muted);
}

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

.ast-skill-info strong {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.ast-skill-info span {
  font-size: 11px;
  color: var(--text-tertiary);
  line-height: 1.3;
}

/* ── 设置 Tab ── */
.ast-settings-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border-secondary);
  margin: 8px 0 0;
}

.ast-tab {
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-tertiary);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.ast-tab:hover {
  color: var(--text-primary);
}

.ast-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.ast-tab-panel {
  display: none;
}

.ast-tab-panel.active {
  display: block;
}

/* ── 设置表单 ── */
.ast-settings-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 4px;
}

.ast-settings-form .form-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.ast-settings-form label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}

.ast-settings-form .form-input {
  padding: 8px 12px;
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 14px;
  font-family: var(--font-mono);
  outline: none;
  transition: border-color var(--transition-fast);
}

.ast-settings-form .form-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-muted);
}

.ast-settings-form .form-hint {
  font-size: 12px;
  color: var(--text-tertiary);
}

/* 模型下拉列表 */
.ast-model-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  max-height: 240px;
  overflow-y: auto;
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  z-index: 100;
  margin-top: 4px;
}

.ast-model-option {
  padding: 8px 12px;
  font-size: 13px;
  font-family: var(--font-mono);
  cursor: pointer;
  transition: background var(--transition-fast);
  border-bottom: 1px solid var(--border-secondary);
}

.ast-model-option:last-child {
  border-bottom: none;
}

.ast-model-option:hover {
  background: var(--accent-muted);
  color: var(--accent);
}

/* ── 模式选择器（高级版） ── */
.ast-mode-selector {
  display: flex;
  gap: 2px;
  margin-right: 8px;
  padding: 3px;
  background: var(--bg-tertiary);
  border-radius: 10px;
  position: relative;
  border: 1px solid var(--border-secondary);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* 滑动指示器 */
.ast-mode-slider {
  position: absolute;
  top: 3px;
  height: calc(100% - 6px);
  border-radius: 8px;
  background: var(--accent);
  opacity: 0;
  transition: left 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              width 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              background 0.3s ease,
              box-shadow 0.3s ease;
  z-index: 0;
  pointer-events: none;
}

.ast-mode-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  font-size: 12px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  transition: color 0.25s ease, transform 0.15s ease;
  white-space: nowrap;
  line-height: 1.4;
  position: relative;
  z-index: 1;
  letter-spacing: 0.3px;
}

.ast-mode-btn svg {
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.ast-mode-btn:hover {
  color: var(--text-primary);
}

.ast-mode-btn:hover svg {
  transform: scale(1.15);
}

.ast-mode-btn:active {
  transform: scale(0.95);
}

.ast-mode-btn.active {
  color: #fff;
  font-weight: 600;
  text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

/* 模式配色 — 滑块 + 光晕 */
.ast-main[data-mode="chat"] .ast-mode-slider {
  background: linear-gradient(135deg, #6b7280, #4b5563);
  box-shadow: 0 2px 8px rgba(107,114,128,0.4);
}
.ast-main[data-mode="plan"] .ast-mode-slider {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  box-shadow: 0 2px 12px rgba(59,130,246,0.45);
}
.ast-main[data-mode="execute"] .ast-mode-slider {
  background: linear-gradient(135deg, #8b5cf6, #7c3aed);
  box-shadow: 0 2px 12px rgba(139,92,246,0.45);
}
.ast-main[data-mode="unlimited"] .ast-mode-slider {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  box-shadow: 0 2px 12px rgba(245,158,11,0.5);
}

/* 模式环境光 — header 底部辉光 */
.ast-header {
  position: relative;
  overflow: hidden;
}
.ast-header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  transition: background 0.4s ease, box-shadow 0.4s ease;
}
.ast-main[data-mode="chat"] .ast-header::after {
  background: linear-gradient(90deg, transparent, #6b7280, transparent);
  box-shadow: 0 0 8px rgba(107,114,128,0.3);
}
.ast-main[data-mode="plan"] .ast-header::after {
  background: linear-gradient(90deg, transparent, #3b82f6, transparent);
  box-shadow: 0 0 12px rgba(59,130,246,0.4);
}
.ast-main[data-mode="execute"] .ast-header::after {
  background: linear-gradient(90deg, transparent, #8b5cf6, transparent);
  box-shadow: 0 0 12px rgba(139,92,246,0.4);
}
.ast-main[data-mode="unlimited"] .ast-header::after {
  background: linear-gradient(90deg, transparent, #f59e0b, transparent);
  box-shadow: 0 0 16px rgba(245,158,11,0.5);
}

/* 切换脉冲动画 */
.ast-header.ast-mode-pulse::after {
  animation: mode-glow-pulse 0.6s ease-out;
}
@keyframes mode-glow-pulse {
  0% { height: 2px; opacity: 1; }
  40% { height: 40px; opacity: 0.6; }
  100% { height: 2px; opacity: 1; }
}

/* 模式简介浮现提示 */
.ast-mode-toast {
  position: absolute;
  top: 52px;
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 13px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
  z-index: 50;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.1);
  white-space: nowrap;
}
.ast-mode-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.ast-mode-toast-label {
  font-weight: 700;
  color: #fff;
}
.ast-mode-toast-desc {
  font-size: 11px;
  color: rgba(255,255,255,0.8);
}
.ast-mode-toast.mode-chat {
  background: rgba(107,114,128,0.85);
  box-shadow: 0 4px 20px rgba(107,114,128,0.3);
}
.ast-mode-toast.mode-plan {
  background: rgba(59,130,246,0.85);
  box-shadow: 0 4px 20px rgba(59,130,246,0.3);
}
.ast-mode-toast.mode-execute {
  background: rgba(139,92,246,0.85);
  box-shadow: 0 4px 20px rgba(139,92,246,0.3);
}
.ast-mode-toast.mode-unlimited {
  background: rgba(245,158,11,0.85);
  box-shadow: 0 4px 20px rgba(245,158,11,0.3);
}

/* ── 全屏涟漪扩散 ── */
.ast-mode-ripple {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 40;
  pointer-events: none;
  overflow: hidden;
}
.ast-mode-ripple::after {
  content: '';
  position: absolute;
  left: var(--ripple-x, 50%);
  top: var(--ripple-y, 0);
  width: 0;
  height: 0;
  border-radius: 50%;
  background: radial-gradient(circle, var(--ripple-color) 0%, transparent 70%);
  opacity: 0.18;
  transform: translate(-50%, -50%);
  animation: mode-ripple-expand 0.7s cubic-bezier(0.2, 0, 0.2, 1) forwards;
}
@keyframes mode-ripple-expand {
  0% { width: 0; height: 0; opacity: 0.25; }
  100% { width: 200vmax; height: 200vmax; opacity: 0; }
}

/* ── 粒子爆发 ── */
.ast-mode-particle {
  position: absolute;
  left: var(--px);
  top: var(--py);
  width: var(--size);
  height: var(--size);
  border-radius: 50%;
  background: var(--color);
  box-shadow: 0 0 6px var(--color), 0 0 12px var(--color);
  pointer-events: none;
  z-index: 41;
  opacity: 1;
  animation: mode-particle-fly var(--duration) var(--delay) cubic-bezier(0.2, 0, 0.3, 1) forwards;
}
@keyframes mode-particle-fly {
  0% { transform: translate(0, 0) scale(1); opacity: 1; }
  70% { opacity: 0.8; }
  100% { transform: translate(var(--dx), var(--dy)) scale(0); opacity: 0; }
}

/* ── 模式环境渐变背景 ── */
.ast-messages {
  position: relative;
}
.ast-messages::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 120px;
  pointer-events: none;
  z-index: 0;
  transition: opacity 0.5s ease;
  opacity: 0;
}
.ast-main[data-mode="plan"] .ast-messages::before {
  background: linear-gradient(180deg, rgba(59,130,246,0.06) 0%, transparent 100%);
  opacity: 1;
}
.ast-main[data-mode="execute"] .ast-messages::before {
  background: linear-gradient(180deg, rgba(139,92,246,0.06) 0%, transparent 100%);
  opacity: 1;
}
.ast-main[data-mode="unlimited"] .ast-messages::before {
  background: linear-gradient(180deg, rgba(245,158,11,0.08) 0%, transparent 100%);
  opacity: 1;
}

/* ── 无限模式特效：脉冲边框 ── */
.ast-main[data-mode="unlimited"] {
  position: relative;
}
.ast-main[data-mode="unlimited"]::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  border: 1px solid transparent;
  border-image: linear-gradient(
    var(--unlimited-angle, 0deg),
    rgba(245,158,11,0.5),
    rgba(239,68,68,0.3),
    rgba(245,158,11,0.5)
  ) 1;
  pointer-events: none;
  z-index: 0;
  animation: unlimited-border-rotate 3s linear infinite;
}
@keyframes unlimited-border-rotate {
  0% { --unlimited-angle: 0deg; }
  100% { --unlimited-angle: 360deg; }
}
@property --unlimited-angle {
  syntax: '<angle>';
  inherits: false;
  initial-value: 0deg;
}

/* 模式简介 toast 图标 */
.ast-mode-toast-icon {
  display: flex;
  align-items: center;
}
.ast-mode-toast-icon svg {
  width: 16px;
  height: 16px;
  stroke: #fff;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.3));
}

/* 输入区模式色 */
.ast-main[data-mode="unlimited"] .ast-input-area { border-top-color: rgba(245,158,11,0.3); }
.ast-main[data-mode="plan"] .ast-input-area { border-top-color: rgba(59,130,246,0.3); }
.ast-main[data-mode="execute"] .ast-input-area { border-top-color: rgba(139,92,246,0.3); }

/* 工具开关行 */
.ast-switch-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-secondary);
  cursor: pointer;
  font-size: 13px;
  color: var(--text-primary);
}
.ast-switch-row:last-of-type { border-bottom: none; }
.ast-switch-row input[type="checkbox"] { display: none; }

.ast-switch-track {
  position: relative;
  width: 36px;
  height: 20px;
  background: var(--bg-tertiary);
  border-radius: 10px;
  transition: background var(--transition-fast);
  flex-shrink: 0;
}
.ast-switch-track::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  background: #fff;
  border-radius: 50%;
  transition: transform var(--transition-fast);
  box-shadow: 0 1px 2px rgba(0,0,0,0.2);
}
.ast-switch-row input:checked + .ast-switch-track {
  background: var(--accent);
}
.ast-switch-row input:checked + .ast-switch-track::after {
  transform: translateX(16px);
}

/* ask_user 交互卡片 */
.ast-ask-card {
  margin: 8px 0;
  padding: 14px 16px;
  border: 1px solid var(--accent);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  animation: msg-in 0.2s ease-out;
}
.ast-ask-card.answered {
  border-color: var(--border-secondary);
  opacity: 0.7;
}

.ast-ask-question {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.5;
}

.ast-ask-options {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 10px;
}

.ast-ask-option {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13px;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}
.ast-ask-option:hover {
  border-color: var(--accent);
  color: var(--text-primary);
  background: var(--accent-muted);
}
.ast-ask-option input {
  accent-color: var(--accent);
}
.ast-ask-option:has(input:checked) {
  border-color: var(--accent);
  background: var(--accent-muted);
  color: var(--accent);
  font-weight: 500;
}

.ast-ask-custom {
  margin-bottom: 10px;
}
.ast-ask-custom-input {
  width: 100%;
  padding: 8px 12px;
  border: 1px dashed var(--border-secondary);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-primary);
  font-size: 12px;
  outline: none;
  transition: border-color var(--transition-fast);
}
.ast-ask-custom-input:focus {
  border-color: var(--accent);
}

.ast-ask-text {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-primary);
  font-size: 13px;
  resize: vertical;
  outline: none;
  margin-bottom: 10px;
  font-family: inherit;
}
.ast-ask-text:focus {
  border-color: var(--accent);
}

.ast-ask-actions {
  display: flex;
  gap: 8px;
  margin-top: 2px;
}

.ast-ask-answered {
  padding: 2px 0;
}
.ast-ask-answered .ast-ask-question {
  margin-bottom: 4px;
  font-size: 12px;
  color: var(--text-tertiary);
}
.ast-ask-answer {
  font-size: 13px;
  color: var(--success);
  font-weight: 500;
}

/* 会话状态指示点 */
.ast-status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-right: 2px;
}
.ast-status-dot.streaming {
  background: var(--success);
  animation: status-pulse 1.2s ease-in-out infinite;
}
.ast-status-dot.waiting {
  background: var(--warning);
  animation: status-pulse 1.5s ease-in-out infinite;
}
.ast-status-dot.error {
  background: var(--error);
}
@keyframes status-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* 重试栏 */
.ast-retry-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  margin: 8px 0;
  background: var(--bg-secondary);
  border: 1px solid var(--error);
  border-radius: var(--radius-md);
  animation: msg-in 0.2s ease-out;
}
.ast-retry-hint {
  font-size: 11px;
  color: var(--text-tertiary);
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
/* 熔断状态：连续错误时的警告变体（Fix #226） */
.ast-retry-bar-circuit {
  background: color-mix(in srgb, var(--warning, #f59e0b) 10%, var(--bg-secondary));
  border-color: var(--warning, #f59e0b);
}
.ast-retry-bar-circuit .ast-retry-hint {
  color: var(--warning, #f59e0b);
  font-weight: 500;
}
.ast-retry-bar-circuit .ast-btn-retry[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}
.ast-retry-bar-circuit .ast-btn-retry[disabled]:hover {
  filter: none;
}

/* 发送队列 */
.ast-queue {
  display: none;
  padding: 0 var(--space-md);
  flex-shrink: 0;
}
.ast-queue-header {
  font-size: 11px;
  color: var(--text-tertiary);
  padding: 4px 0;
  font-weight: 500;
}
.ast-queue-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  margin-bottom: 4px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-sm);
  font-size: 12px;
  animation: msg-in 0.15s ease-out;
}
.ast-queue-num {
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-muted);
  color: var(--accent);
  border-radius: 50%;
  font-size: 10px;
  font-weight: 600;
  flex-shrink: 0;
}
.ast-queue-text {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text-primary);
}
.ast-queue-actions {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}
.ast-queue-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 3px;
  font-size: 12px;
  opacity: 0.5;
  transition: opacity var(--transition-fast), background var(--transition-fast);
}
.ast-queue-btn:hover {
  opacity: 1;
}
.ast-queue-btn.send:hover {
  background: var(--accent-muted);
}
.ast-queue-btn.edit:hover {
  background: var(--accent-muted);
}
.ast-queue-btn.delete:hover {
  background: var(--error-muted);
  color: var(--error);
}
.ast-queue-edit-input {
  flex: 1;
  background: var(--bg-primary);
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 12px;
  padding: 4px 8px;
  resize: none;
  outline: none;
  font-family: inherit;
}
.ast-queue-item.editing {
  border-color: var(--accent);
}
.ast-queue-header {
  display: flex;
  align-items: center;
  gap: 4px;
}
.ast-queue-header svg {
  flex-shrink: 0;
}
.ast-retry-bar .btn svg {
  vertical-align: -2px;
  margin-right: 2px;
}

/* 工具调用块 */
.ast-tool-block {
  margin-bottom: 8px;
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-sm);
  font-size: 12px;
  overflow: hidden;
  width: 100%;
}

.ast-tool-block.ok {
  border-left: 3px solid var(--success);
}

.ast-tool-block.denied {
  border-left: 3px solid var(--warning);
}

.ast-tool-block.pending {
  border-left: 3px solid var(--accent);
  animation: ast-pulse 1.5s ease-in-out infinite;
}

@keyframes ast-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.ast-tool-summary {
  padding: 8px 12px;
  cursor: pointer;
  user-select: none;
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-tertiary);
  transition: background var(--transition-fast);
}

.ast-tool-summary:hover {
  background: var(--bg-secondary);
}

.ast-tool-summary code {
  font-size: 11px;
  background: var(--bg-secondary);
  padding: 1px 6px;
  border-radius: 3px;
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ast-tool-status {
  margin-left: auto;
  font-size: 11px;
  color: var(--text-tertiary);
  flex-shrink: 0;
}

.ast-tool-block.ok .ast-tool-status {
  color: var(--success);
}

.ast-tool-block.denied .ast-tool-status {
  color: var(--warning);
}

.ast-tool-result {
  margin: 0;
  padding: 8px 12px;
  font-size: 11px;
  font-family: var(--font-mono);
  line-height: 1.5;
  max-height: 200px;
  overflow: auto;
  background: var(--bg-primary);
  white-space: pre-wrap;
  word-break: break-all;
  border-top: 1px solid var(--border-secondary);
}

/* ── 图片附件 ── */

/* 附件按钮 */
.ast-attach-btn {
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: color var(--transition-fast), background var(--transition-fast);
}
.ast-attach-btn:hover {
  color: var(--accent);
  background: var(--accent-muted);
}

/* 输入框布局调整 */
.ast-input-wrap {
  display: flex;
  align-items: flex-end;
  gap: 4px;
}

/* 图片预览区 */
.ast-image-preview {
  display: none;
  flex-wrap: wrap;
  gap: 8px;
  padding: 8px 12px 4px;
  animation: msg-in 0.15s ease-out;
}

.ast-img-thumb {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 2px solid var(--border-secondary);
  transition: border-color var(--transition-fast);
  cursor: pointer;
  animation: msg-in 0.2s ease-out;
}
.ast-img-thumb:hover {
  border-color: var(--accent);
}
.ast-img-thumb img {
  display: block;
  height: 64px;
  max-width: 120px;
  object-fit: cover;
}
.ast-img-thumb-del {
  position: absolute;
  top: 2px;
  right: 2px;
  background: rgba(0,0,0,0.65);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--transition-fast);
  padding: 0;
}
.ast-img-thumb:hover .ast-img-thumb-del {
  opacity: 1;
}
.ast-img-thumb-del:hover {
  background: var(--error);
}

/* 消息中的图片 */
.ast-msg-images {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 6px;
}
.ast-msg-img {
  border-radius: var(--radius-sm);
  max-height: 240px;
  object-fit: contain;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.ast-msg-img:hover {
  transform: scale(1.02);
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}
.ast-msg-img-placeholder,
.ast-msg-img-loading {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  background: var(--bg-tertiary);
  border: 1px dashed var(--border-secondary);
  border-radius: var(--radius-sm);
  color: var(--text-tertiary);
  font-size: 11px;
}
.ast-msg-img-placeholder svg,
.ast-msg-img-loading svg {
  flex-shrink: 0;
  opacity: 0.5;
}
.ast-msg-img-loading svg {
  animation: status-pulse 1.2s ease-in-out infinite;
}

/* 拖拽覆盖层 */
.ast-main.ast-drag-over {
  position: relative;
}
.ast-main.ast-drag-over::after {
  content: '释放以添加图片';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(var(--accent-rgb, 139,92,246), 0.08);
  border: 2px dashed var(--accent);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 600;
  color: var(--accent);
  z-index: 100;
  pointer-events: none;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  animation: msg-in 0.15s ease-out;
}

/* 右键调试菜单 */
.ast-ctx-menu {
  position: fixed;
  z-index: 99999;
  min-width: 160px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-sm);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
  padding: 4px 0;
  animation: msg-in 0.12s ease-out;
}
.ast-ctx-menu button {
  display: block;
  width: 100%;
  padding: 7px 14px;
  border: none;
  background: none;
  color: var(--text-primary);
  font-size: 13px;
  text-align: left;
  cursor: pointer;
  white-space: nowrap;
}
.ast-ctx-menu button:hover {
  background: var(--accent-muted);
  color: var(--accent);
}
.ast-ctx-menu hr {
  border: none;
  border-top: 1px solid var(--border-secondary);
  margin: 4px 0;
}

/* 调试弹窗 */
.ast-debug-overlay {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: msg-in 0.15s ease-out;
}
.ast-debug-modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  box-shadow: 0 16px 48px rgba(0,0,0,0.2);
  width: min(640px, 90vw);
  max-height: 80vh;
  display: flex;
  flex-direction: column;
}
.ast-debug-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-secondary);
  font-weight: 600;
  font-size: 14px;
}
.ast-debug-close {
  border: none;
  background: none;
  font-size: 20px;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 0 4px;
  line-height: 1;
}
.ast-debug-close:hover { color: var(--text-primary); }
.ast-debug-content {
  flex: 1;
  overflow: auto;
  padding: 16px;
  margin: 0;
  font-family: 'Cascadia Code', 'Fira Code', 'JetBrains Mono', monospace;
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-secondary);
  white-space: pre-wrap;
  word-break: break-all;
  background: var(--bg-tertiary);
}
.ast-debug-actions {
  padding: 10px 16px;
  border-top: 1px solid var(--border-secondary);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* ── 灵魂移植卡片 ── */
.ast-soul-card {
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  overflow: hidden;
}

.ast-soul-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-secondary);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}
.ast-soul-header svg { flex-shrink: 0; }

.ast-soul-files {
  display: flex;
  flex-direction: column;
}

.ast-soul-file {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 14px;
  font-size: 12px;
  border-bottom: 1px solid var(--border-secondary);
  transition: background var(--transition-fast);
}
.ast-soul-file:last-child { border-bottom: none; }
.ast-soul-file:hover { background: var(--bg-card-hover); }

.ast-soul-file-icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.ast-soul-file.loaded .ast-soul-file-icon {
  background: var(--success-muted, rgba(34,197,94,0.1));
  color: var(--success);
}
.ast-soul-file.missing .ast-soul-file-icon {
  background: var(--error-muted, rgba(239,68,68,0.1));
  color: var(--error);
}

.ast-soul-file-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}

.ast-soul-file-name {
  font-weight: 600;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 12px;
}
.ast-soul-file.missing .ast-soul-file-name {
  color: var(--text-tertiary);
}

.ast-soul-file-desc {
  font-size: 11px;
  color: var(--text-tertiary);
  line-height: 1.2;
}

.ast-soul-file-size {
  font-size: 11px;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
  flex-shrink: 0;
}

/* 按钮样式补充 */
.btn-ghost {
  background: transparent;
  border: 1px solid var(--border-secondary);
  color: var(--text-secondary);
}
.btn-ghost:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-primary);
  color: var(--text-primary);
}
.btn svg { vertical-align: -2px; }

/* 加载旋转动画 */
.ast-spin {
  animation: ast-spin 1s linear infinite;
}
@keyframes ast-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* === 移动端响应式 === */
@media (max-width: 768px) {
  .ast-header {
    flex-wrap: wrap;
    padding: var(--space-sm) var(--space-sm);
    gap: 6px;
  }
  .ast-header-left {
    gap: 6px;
  }
  .ast-toggle-sidebar {
    width: 36px;
    height: 36px;
    min-width: 36px;
    border: 1px solid var(--border-primary);
    border-radius: 8px;
    align-items: center;
    justify-content: center;
  }
  .ast-header-actions button,
  .ast-header-actions a {
    min-width: 34px;
    min-height: 34px;
    padding: 6px;
  }
  .ast-mode-tabs {
    gap: 2px;
  }
  .ast-mode-tab {
    padding: 4px 8px;
    font-size: 12px;
  }
  .ast-skill-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
    padding: 0 var(--space-sm);
  }
  .ast-sidebar.open {
    position: fixed;
    left: 0;
    top: 0;
    z-index: 850;
    height: 100vh;
    width: 240px;
    min-width: 240px;
    box-shadow: 4px 0 24px rgba(0,0,0,.15);
  }
  .ast-input-area {
    padding: var(--space-sm);
    gap: var(--space-xs);
  }
}
@media (max-width: 480px) {
  .ast-skill-grid {
    grid-template-columns: 1fr;
  }
}