/* ===== AI 侧边栏面板 ===== */

/* 带 AI 面板的布局 */
.app-container.ai-panel-open {
    grid-template-columns: var(--lib-panel-width) 1fr var(--ai-panel-width);
}

.app-container.sidebar-collapsed.ai-panel-open {
    grid-template-columns: 0 1fr var(--ai-panel-width);
}

.ai-panel {
    background: var(--sidebar-bg);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    width: 0;
    opacity: 0;
    pointer-events: none;
    transition: width 0.3s ease, opacity 0.3s ease;
    position: relative;
}

.app-container.ai-panel-open .ai-panel {
    width: var(--ai-panel-width);
    opacity: 1;
    pointer-events: all;
}

/* AI 面板头部 */
.ai-panel-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.ai-panel-header h2 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.ai-header-actions {
    display: flex;
    gap: 6px;
}

.ai-header-actions button {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background: var(--hover-bg);
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.ai-header-actions button:hover {
    background: var(--border-color);
    color: var(--text-color);
}

/* 设置面板 */
.ai-settings-panel {
    display: none;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    background: var(--hover-bg);
    flex-shrink: 0;
    animation: slideDown 0.2s ease;
}

.ai-settings-panel.show {
    display: block;
}

.ai-setting-group {
    margin-bottom: 14px;
}

.ai-setting-group:last-child {
    margin-bottom: 0;
}

.ai-setting-group label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ai-setting-group select,
.ai-setting-group input[type="password"],
.ai-setting-group input[type="text"] {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 13px;
    background: var(--sidebar-bg);
    color: var(--text-color);
    outline: none;
    transition: border-color 0.2s;
}

.ai-setting-group select:focus,
.ai-setting-group input:focus {
    border-color: var(--primary-color);
}

.ai-key-row {
    display: flex;
    gap: 6px;
}

.ai-key-row input {
    flex: 1;
}

.ai-key-row button {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--sidebar-bg);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 12px;
    transition: all 0.2s;
    white-space: nowrap;
}

.ai-key-row button:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.ai-key-status {
    font-size: 12px;
    margin-top: 4px;
    display: none;
}

.ai-key-status.success {
    color: var(--success-color);
    display: block;
}

.ai-key-status.error {
    color: var(--danger-color);
    display: block;
}

/* 对话历史列表 */
.ai-history-panel {
    display: none;
    flex-direction: column;
    flex: 1;
    overflow: hidden;
}

.ai-history-panel.show {
    display: flex;
}

.ai-history-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

.ai-history-item {
    padding: 12px 14px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: 4px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.ai-history-item:hover {
    background: var(--hover-bg);
}

.ai-history-item-info {
    flex: 1;
    min-width: 0;
}

.ai-history-item-title {
    font-size: 14px;
    color: var(--text-color);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-weight: 500;
}

.ai-history-item-meta {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.ai-history-item-actions {
    display: flex;
    gap: 2px;
    opacity: 0;
    transition: opacity 0.15s;
    flex-shrink: 0;
}

.ai-history-item:hover .ai-history-item-actions {
    opacity: 1;
}

.ai-history-item-action {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ai-history-item-action:hover {
    background: var(--hover-bg);
    color: var(--primary-color);
}

.ai-history-item-action.danger:hover {
    color: var(--danger-color);
    background: #fee2e2;
}

.ai-history-item-del {
    opacity: 0;
    background: none;
    border: none;
    color: var(--danger-color);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
    flex-shrink: 0;
}

.ai-history-item:hover .ai-history-item-del {
    opacity: 1;
}

.ai-history-item-del:hover {
    background: #fee2e2;
}

/* 对话主区域 */
.ai-chat-area {
    display: flex;
    flex-direction: column;
    flex: 1;
    overflow: hidden;
}

/* 消息列表 */
.ai-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* 欢迎信息 */
.ai-welcome {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.ai-welcome svg {
    opacity: 0.3;
}

.ai-welcome h3 {
    font-size: 16px;
    color: var(--text-color);
    font-weight: 600;
}

.ai-welcome p {
    font-size: 13px;
    line-height: 1.6;
}

/* 消息气泡 */
.ai-msg {
    display: flex;
    flex-direction: column;
    max-width: 100%;
    animation: fadeIn 0.2s ease;
}

.ai-msg.user {
    align-items: flex-end;
}

.ai-msg.assistant {
    align-items: flex-start;
}

.ai-msg-bubble {
    padding: 10px 14px;
    border-radius: var(--radius-lg);
    font-size: 14px;
    line-height: 1.7;
    max-width: 95%;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.ai-msg.user .ai-msg-bubble {
    background: var(--primary-color);
    color: white;
    border-bottom-right-radius: 4px;
}

.ai-msg.assistant .ai-msg-bubble {
    background: var(--hover-bg);
    color: var(--text-color);
    border-bottom-left-radius: 4px;
}

/* AI 消息内的 Markdown 渲染 */
.ai-msg-bubble p {
    margin: 0 0 8px 0;
}

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

.ai-msg-bubble pre {
    background: var(--code-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
    overflow-x: auto;
    margin: 8px 0;
    font-size: 12px;
}

.ai-msg.user .ai-msg-bubble pre {
    background: rgba(255,255,255,0.15);
    border-color: rgba(255,255,255,0.2);
}

.ai-msg-bubble code {
    font-family: 'JetBrains Mono', 'Consolas', monospace;
    font-size: 0.9em;
}

.ai-msg-bubble :not(pre) > code {
    background: var(--code-bg);
    padding: 2px 5px;
    border-radius: 3px;
    font-size: 0.85em;
}

.ai-msg.user .ai-msg-bubble :not(pre) > code {
    background: rgba(255,255,255,0.2);
}

.ai-msg-bubble h2, .ai-msg-bubble h3, .ai-msg-bubble h4 {
    margin: 12px 0 6px;
    font-weight: 600;
}

.ai-msg-bubble ul, .ai-msg-bubble ol {
    margin: 6px 0;
    padding-left: 20px;
}

.ai-msg-bubble li {
    margin-bottom: 3px;
}

.ai-msg-bubble a {
    color: var(--primary-color);
    text-decoration: underline;
}

.ai-msg.user .ai-msg-bubble a {
    color: #bfdbfe;
}

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

.ai-msg-bubble blockquote {
    border-left: 3px solid var(--border-color);
    padding-left: 10px;
    color: var(--text-secondary);
    margin: 6px 0;
}

/* 用户消息操作按钮 */
.ai-msg-actions {
    display: flex;
    gap: 4px;
    opacity: 0;
    transition: opacity 0.15s ease;
    margin-top: 4px;
    justify-content: flex-end;
}

.ai-msg.user:hover .ai-msg-actions {
    opacity: 1;
}

.ai-msg-action-btn {
    width: 26px;
    height: 26px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: var(--sidebar-bg);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
    padding: 0;
}

.ai-msg-action-btn:hover {
    background: var(--hover-bg);
    color: var(--text-color);
    border-color: var(--text-secondary);
}

.ai-msg-edit-btn:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.ai-msg-rollback-btn:hover {
    color: var(--danger-color);
    border-color: var(--danger-color);
}

body.dark-mode .ai-msg-action-btn {
    background: #1e293b;
    border-color: #334155;
}

body.dark-mode .ai-msg-action-btn:hover {
    background: #334155;
}

/* 思考过程（DeepSeek R1） */
.ai-reasoning {
    margin-bottom: 8px;
    max-width: 95%;
}

.ai-reasoning-toggle {
    font-size: 12px;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    background: var(--hover-bg);
    border: none;
    transition: all 0.2s;
}

.ai-reasoning-toggle:hover {
    color: var(--text-color);
}

.ai-reasoning-content {
    display: none;
    font-size: 12px;
    color: var(--text-secondary);
    padding: 8px 12px;
    margin-top: 4px;
    border-left: 2px solid var(--border-color);
    max-height: 200px;
    overflow-y: auto;
    line-height: 1.6;
    white-space: pre-wrap;
}

.ai-reasoning-content.show {
    display: block;
}

/* 工具调用卡片 — 与普通消息气泡明显区分 */
.ai-tool-card {
    background: var(--sidebar-bg);
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--primary-color);
    border-radius: var(--radius-md);
    margin: 6px 0;
    max-width: 95%;
    overflow: hidden;
    font-size: 13px;
    transition: border-left-color 0.3s;
    animation: toolCardSlideIn 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.ai-tool-card.no-animate {
    animation: none;
}

@keyframes toolCardSlideIn {
    0% {
        opacity: 0;
        transform: translateX(-16px) scale(0.96);
    }
    60% {
        opacity: 1;
        transform: translateX(3px) scale(1.01);
    }
    100% {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
}

.ai-tool-card.completed {
    border-left-color: #10b981;
}

.ai-tool-card-header {
    padding: 8px 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: background 0.2s;
    user-select: none;
}

.ai-tool-card-header:hover {
    background: var(--hover-bg);
}

.ai-tool-spinner {
    width: 14px;
    height: 14px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: toolSpin 0.8s linear infinite;
    flex-shrink: 0;
}

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

.ai-tool-check {
    color: #10b981;
    font-weight: 600;
    font-size: 14px;
    flex-shrink: 0;
    width: 14px;
    text-align: center;
}

.ai-tool-desc {
    flex: 1;
    color: var(--text-color);
    font-size: 13px;
}

.ai-tool-chevron {
    color: var(--text-secondary);
    transition: transform 0.2s;
    flex-shrink: 0;
}

.ai-tool-chevron.expanded {
    transform: rotate(90deg);
}

.ai-tool-card-body {
    display: none;
    padding: 0 12px 10px;
    border-top: 1px solid var(--border-color);
}

.ai-tool-card-body.show {
    display: block;
    padding-top: 10px;
}

.ai-tool-output {
    background: var(--code-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 8px 10px;
    margin: 0;
    font-size: 11px;
    overflow-x: auto;
    max-height: 200px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-all;
    font-family: 'JetBrains Mono', 'Consolas', monospace;
    color: var(--text-color);
}

.ai-tool-executing-hint {
    color: var(--text-secondary);
    font-size: 12px;
    padding: 8px 0;
    display: flex;
    align-items: center;
    gap: 6px;
}

.ai-tool-executing-hint .ai-tool-spinner {
    width: 12px;
    height: 12px;
}

.ai-tool-rollback-btn {
    margin-top: 8px;
    padding: 4px 10px;
    font-size: 11px;
    border: 1px solid var(--danger-color);
    background: transparent;
    color: var(--danger-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
}

.ai-tool-rollback-btn:hover {
    background: var(--danger-color);
    color: white;
}

.ai-tool-rollback-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* 文件附件区域 */
.ai-attachments {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 8px 16px 0;
    flex-shrink: 0;
}

.ai-attachment-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px 3px 6px;
    background: var(--hover-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-size: 12px;
    color: var(--text-color);
    max-width: 200px;
}

.ai-attachment-chip svg {
    flex-shrink: 0;
    color: var(--text-secondary);
}

.ai-attachment-chip span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.ai-attachment-chip button {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    font-size: 14px;
    line-height: 1;
    flex-shrink: 0;
    margin-left: 2px;
}

.ai-attachment-chip button:hover {
    color: var(--danger-color);
}

.ai-attachment-chip.context-chip {
    border-color: var(--primary-color);
    background: rgba(59, 130, 246, 0.08);
}

body.dark-mode .ai-attachment-chip.context-chip {
    background: rgba(59, 130, 246, 0.15);
}

/* 附件按钮 */
.ai-attach-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s;
    flex-shrink: 0;
}

.ai-attach-btn:hover {
    color: var(--primary-color);
}

/* 文件选择器下拉 */
.ai-file-picker {
    background: var(--sidebar-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    max-height: 250px;
    overflow-y: auto;
    margin: 0 16px 4px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    flex-shrink: 0;
}

.ai-file-picker-item {
    padding: 8px 12px;
    cursor: pointer;
    font-size: 13px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background 0.15s;
}

.ai-file-picker-item:hover {
    background: var(--hover-bg);
}

.ai-file-picker-item.attached {
    opacity: 0.5;
}

.ai-file-attached-mark {
    color: var(--success-color);
    font-size: 12px;
}

.ai-file-picker-empty,
.ai-file-picker-loading {
    padding: 16px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 13px;
}

/* 输入区域 */
.ai-input-area {
    padding: 12px 16px;
    border-top: 1px solid var(--border-color);
    background: var(--sidebar-bg);
    flex-shrink: 0;
}

.ai-input-wrapper {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    background: var(--hover-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 8px 12px;
    transition: border-color 0.2s;
}

.ai-input-wrapper:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.ai-input-wrapper textarea {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--text-color);
    font-size: 14px;
    font-family: inherit;
    resize: none;
    outline: none;
    max-height: 120px;
    min-height: 22px;
    line-height: 1.5;
    padding: 0;
}

.ai-input-wrapper textarea::placeholder {
    color: var(--text-secondary);
}

.ai-send-btn {
    width: 32px;
    height: 32px;
    min-width: 32px;
    border-radius: 50%;
    border: none;
    background: var(--primary-color);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    flex-shrink: 0;
}

.ai-send-btn:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: scale(1.05);
}

.ai-send-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.ai-stop-btn {
    width: 32px;
    height: 32px;
    min-width: 32px;
    border-radius: 50%;
    border: 2px solid var(--danger-color);
    background: transparent;
    color: var(--danger-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    flex-shrink: 0;
}

.ai-stop-btn:hover {
    background: var(--danger-color);
    color: white;
}

/* 上下文文件提示 */
.ai-context-bar {
    padding: 6px 16px;
    background: var(--hover-bg);
    border-top: 1px solid var(--border-color);
    font-size: 12px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

.ai-context-bar span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.ai-context-bar button {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 2px;
    font-size: 14px;
    line-height: 1;
}

.ai-context-bar button:hover {
    color: var(--text-color);
}

/* AI 面板打开按钮（放在 preview header 中） */
.ai-toggle-btn {
    width: 36px;
    height: 36px;
    min-width: 36px;
    background: var(--hover-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.2s;
    flex-shrink: 0;
}

.ai-toggle-btn:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.app-container.ai-panel-open .ai-toggle-btn {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* 打字指示器 */
.ai-typing {
    display: flex;
    gap: 4px;
    padding: 8px 14px;
}

.ai-typing-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--text-secondary);
    animation: aiTyping 1.4s infinite ease-in-out;
}

.ai-typing-dot:nth-child(2) { animation-delay: 0.2s; }
.ai-typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes aiTyping {
    0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
    40% { transform: scale(1); opacity: 1; }
}

/* 暗色主题适配 */
body.dark-mode .ai-msg.user .ai-msg-bubble {
    background: #2563eb;
}

body.dark-mode .ai-tool-card {
    background: #1e293b;
    border-color: #334155;
    border-left-color: var(--primary-color);
}

body.dark-mode .ai-tool-card.completed {
    border-left-color: #10b981;
}

body.dark-mode .ai-tool-spinner {
    border-color: #334155;
    border-top-color: var(--primary-color);
}

body.dark-mode .ai-file-picker {
    background: #1e293b;
    border-color: #334155;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

body.dark-mode .ai-history-item-del:hover {
    background: #450a0a;
}

body.dark-mode .ai-history-item-action.danger:hover {
    background: #450a0a;
}

/* 蓝色主题适配 */
body.blue-mode .ai-msg.user .ai-msg-bubble {
    background: #2563eb;
    color: white;
}

body.blue-mode .ai-tool-card {
    background: #dbeafe;
    border-color: #bfdbfe;
    border-left-color: var(--primary-color);
}

body.blue-mode .ai-tool-card.completed {
    border-left-color: #10b981;
}

body.blue-mode .ai-msg-action-btn {
    background: #dbeafe;
    border-color: #bfdbfe;
}

body.blue-mode .ai-msg-action-btn:hover {
    background: #bfdbfe;
}

/* 粉色主题适配 */
body.pink-mode .ai-msg.user .ai-msg-bubble {
    background: #ec4899;
    color: white;
}

body.pink-mode .ai-tool-card {
    background: #fce7f3;
    border-color: #fbcfe8;
    border-left-color: var(--primary-color);
}

body.pink-mode .ai-tool-card.completed {
    border-left-color: #10b981;
}

body.pink-mode .ai-msg-action-btn {
    background: #fce7f3;
    border-color: #fbcfe8;
}

body.pink-mode .ai-msg-action-btn:hover {
    background: #fbcfe8;
}

/* 响应式 */
@media (max-width: 1200px) {
    .app-container.ai-panel-open {
        grid-template-columns: 0 1fr var(--ai-panel-width);
    }
    .app-container.ai-panel-open .library-panel {
        transform: translateX(-100%);
        opacity: 0;
        pointer-events: none;
    }
}

@media (max-width: 768px) {
    .app-container.ai-panel-open {
        grid-template-columns: 1fr;
    }
    .app-container.ai-panel-open .ai-panel {
        position: fixed;
        top: 0;
        right: 0;
        width: 100vw;
        height: 100vh;
        z-index: 999;
    }
    .ai-toggle-btn {
        display: none;
    }
}