/* ==================== 全局样式 ==================== */
:root {
    --primary: #6366F1;
    --primary-dark: #4F46E5;
    --secondary: #8B5CF6;
    --accent: #10B981;
    --warning: #EF4444;
    --bg-dark: #1a1d2e;
    --bg-card: #242837;
    --bg-hover: #2d3344;
    --text-primary: #f3f4f6;
    --text-secondary: #B8BCC9;
    --text-muted: #CBD5E1;
    --border: #3a3f52;
    --message-bg: #252a3d;
    --message-bg-user: linear-gradient(135deg, var(--primary), var(--secondary));
    --message-font-size: 18px;

    --font-sans: 'Noto Sans SC', system-ui, -apple-system, sans-serif;
    --font-serif: 'Noto Serif SC', Georgia, serif;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --transition: 200ms ease;
}

/* 浅色主题 */
body.light-theme {
    --bg-dark: #F8FAFC;
    --bg-card: #FFFFFF;
    --bg-hover: #F1F5F9;
    --text-primary: #1E293B;
    --text-secondary: #64748B;
    --text-muted: #64748B;
    --border: #E2E8F0;
    --message-bg: #F8F9FA;
}

body.light-theme .auth-header h1 {
    background: linear-gradient(135deg, var(--primary-dark), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

body.light-theme .toolbar-btn {
    border-color: #E2E8F0;
    color: #64748B;
}

body.light-theme .toolbar-btn:hover {
    background: #F1F5F9;
    color: #1E293B;
}

body.light-theme .choice-btn {
    background: #F8F9FA;
    border-color: #E0E4E8;
    color: #1E293B;
}

body.light-theme .choice-btn:hover {
    background: #F0F2F5;
    border-color: var(--primary);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-serif);
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

/* ==================== 主页面背景装饰 ==================== */
.main-page {
    position: relative;
    overflow: hidden;
}

.main-page::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(253, 245, 254, 0.85) 0%, 
        rgba(245, 243, 255, 0.85) 25%, 
        rgba(237, 233, 254, 0.85) 50%, 
        rgba(233, 213, 255, 0.85) 75%, 
        rgba(221, 214, 254, 0.85) 100%
    );
    z-index: -2;
    pointer-events: none;
}

body.light-theme.main-page::before {
    background: linear-gradient(135deg, 
        rgba(253, 245, 254, 0.85) 0%, 
        rgba(245, 243, 255, 0.85) 25%, 
        rgba(237, 233, 254, 0.85) 50%, 
        rgba(233, 213, 255, 0.85) 75%, 
        rgba(221, 214, 254, 0.85) 100%
    );
}

body.dark-theme.main-page::before {
    background: linear-gradient(135deg, 
        rgba(15, 12, 41, 0.92) 0%, 
        rgba(26, 10, 62, 0.92) 15%, 
        rgba(36, 27, 79, 0.92) 25%, 
        rgba(48, 36, 80, 0.92) 35%,
        rgba(26, 26, 78, 0.92) 45%,
        rgba(13, 27, 62, 0.92) 55%,
        rgba(10, 42, 74, 0.92) 65%,
        rgba(13, 58, 78, 0.92) 75%,
        rgba(26, 42, 74, 0.92) 85%,
        rgba(15, 12, 41, 0.92) 100%
    );
}

.main-page .bg-decoration {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.main-page .bg-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: main-blob-float 15s ease-in-out infinite;
}

.main-page .bg-blob-1 {
    top: 5%;
    left: 5%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(192, 132, 252, 0.5), transparent 70%);
    animation-delay: 0s;
}

.main-page .bg-blob-2 {
    top: 10%;
    right: 8%;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(244, 114, 182, 0.4), transparent 70%);
    animation-delay: 3s;
}

.main-page .bg-blob-3 {
    bottom: 15%;
    left: 20%;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(34, 211, 238, 0.35), transparent 70%);
    animation-delay: 6s;
}

.main-page .bg-blob-4 {
    bottom: 8%;
    right: 15%;
    width: 380px;
    height: 380px;
    background: radial-gradient(circle, rgba(251, 146, 60, 0.3), transparent 70%);
    animation-delay: 9s;
}

.main-page .bg-blob-5 {
    top: 40%;
    left: 50%;
    width: 280px;
    height: 280px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.35), transparent 70%);
    animation-delay: 12s;
}

@keyframes main-blob-float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(40px, -40px) scale(1.1); }
    50% { transform: translate(-30px, 30px) scale(0.95); }
    75% { transform: translate(30px, 40px) scale(1.08); }
}

.main-page .grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(168, 85, 247, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(168, 85, 247, 0.08) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 0;
}

.main-page .main-layout {
    position: relative;
    z-index: 10;
}

/* 深色主题下的背景 */
body.dark-theme.main-page .bg-blob-1 {
    background: radial-gradient(circle, rgba(138, 43, 226, 0.4), transparent 70%);
}

body.dark-theme.main-page .bg-blob-2 {
    background: radial-gradient(circle, rgba(255, 0, 128, 0.3), transparent 70%);
}

body.dark-theme.main-page .bg-blob-3 {
    background: radial-gradient(circle, rgba(0, 255, 255, 0.3), transparent 70%);
}

body.dark-theme.main-page .bg-blob-4 {
    background: radial-gradient(circle, rgba(255, 100, 0, 0.25), transparent 70%);
}

body.dark-theme.main-page .bg-blob-5 {
    background: radial-gradient(circle, rgba(99, 102, 241, 0.3), transparent 70%);
}

body.dark-theme.main-page .grid-overlay {
    background-image:
        linear-gradient(rgba(138, 43, 226, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(138, 43, 226, 0.1) 1px, transparent 1px);
}

/* ==================== 主题切换（强化覆盖） ==================== */
/* 暗色主题 */
body.dark-theme.main-page::before {
    background: linear-gradient(135deg,
        rgba(15, 10, 30, 0.92) 0%,
        rgba(20, 15, 40, 0.92) 50%,
        rgba(30, 15, 50, 0.92) 100%) !important;
}
body.dark-theme.main-page {
    color: #E5E7EB;
}
body.dark-theme.main-page .sidebar,
body.dark-theme.main-page .chat-area,
body.dark-theme.main-page .notes-panel,
body.dark-theme.main-page .status-panel {
    background: transparent !important;
    color: #E5E7EB;
}
body.dark-theme.main-page .chat-message-content,
body.dark-theme.main-page .ai-message .message-content,
body.dark-theme.main-page .user-message .message-content {
    background: var(--message-bg) !important;
    color: #E5E7EB;
}
body.dark-theme.main-page .column-header {
    background: var(--bg-card) !important;
    color: #E5E7EB !important;
    border-bottom-color: var(--border) !important;
}
body.dark-theme.main-page .column-header-title,
body.dark-theme.main-page .toolbar-title {
    color: #E5E7EB !important;
}
body.dark-theme.main-page .empty-state-title {
    color: #E5E7EB !important;
}
body.dark-theme.main-page .empty-state-desc {
    color: #B8BCC9 !important;
}
body.dark-theme.main-page .empty-state {
    color: #B8BCC9 !important;
}
body.dark-theme.main-page .annotation-text {
    color: #CBD5E1 !important;
}
body.dark-theme.main-page .toolbar,
body.dark-theme.main-page .chat-toolbar,
body.dark-theme.main-page #chatToolbar,
body.dark-theme.main-page .input-bar,
body.dark-theme.main-page .column-footer,
body.dark-theme.main-page .notes-filter-bar {
    background: var(--bg-card) !important;
    color: #E5E7EB;
}
body.dark-theme.main-page input,
body.dark-theme.main-page textarea,
body.dark-theme.main-page .chat-input {
    background: var(--bg-card) !important;
    color: #E5E7EB;
}
body.dark-theme.main-page .note-card,
body.dark-theme.main-page .annotation-card {
    background: var(--bg-card) !important;
    color: #E5E7EB;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3) !important;
}

/* 亮色主题 */
body.light-theme.main-page::before {
    background: linear-gradient(135deg,
        rgba(253, 245, 254, 0.85) 0%,
        rgba(245, 243, 255, 0.85) 25%,
        rgba(237, 233, 254, 0.85) 50%,
        rgba(233, 213, 255, 0.85) 75%,
        rgba(221, 214, 254, 0.85) 100%) !important;
}
body.light-theme.main-page {
    color: #1E293B;
}
body.light-theme.main-page .sidebar,
body.light-theme.main-page .chat-area,
body.light-theme.main-page .notes-panel,
body.light-theme.main-page .status-panel {
    background: transparent !important;
    color: #1E293B;
}
body.light-theme.main-page .chat-message-content,
body.light-theme.main-page .user-message .message-content {
    background: #FFFFFF !important;
    color: #1E293B !important;
    border: 1px solid #E2E8F0 !important;
}
body.light-theme.main-page .ai-message .message-content {
    background: #F8FAFC !important;
    color: #1E293B !important;
    border: 1px solid #E2E8F0 !important;
}
body.light-theme.main-page .toolbar,
body.light-theme.main-page .chat-toolbar,
body.light-theme.main-page #chatToolbar {
    background: rgba(255, 255, 255, 0.95) !important;
    color: #1E293B;
    border-bottom: 1px solid #E2E8F0 !important;
}
body.light-theme.main-page input,
body.light-theme.main-page textarea,
body.light-theme.main-page .chat-input {
    background: #FFFFFF !important;
    color: #1E293B !important;
    border-color: #E2E8F0 !important;
}
body.light-theme.main-page .note-card,
body.light-theme.main-page .annotation-card {
    background: #FFFFFF !important;
    color: #1E293B;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08) !important;
}

/* 浅色主题下的逻辑图节点 */
body.light-theme .graph-node {
    background: #FFFFFF !important;
    color: #1E293B !important;
    border-color: #CBD5E1 !important;
}
body.light-theme .graph-node:hover {
    border-color: var(--primary) !important;
    background: #EEF2FF !important;
}
body.light-theme .graph-node.current {
    border-color: var(--secondary) !important;
    background: rgba(139, 92, 246, 0.15) !important;
}
body.light-theme .graph-node.end {
    border-color: var(--accent) !important;
    background: rgba(16, 185, 129, 0.15) !important;
}
body.light-theme .graph-edges line {
    stroke: #94A3B8 !important;
}
body.light-theme .graph-edges polygon {
    fill: #94A3B8 !important;
}

/* 浅色主题下的文本选择器 */
body.light-theme .text-selector-item {
    border-bottom-color: #E2E8F0 !important;
}
body.light-theme .text-selector-item:hover {
    background: #F1F5F9 !important;
}
body.light-theme .text-selector-item.selected {
    background: rgba(99, 102, 241, 0.15) !important;
    border-left-color: var(--primary) !important;
}
body.light-theme .text-selector-label {
    color: #64748B !important;
}
body.light-theme .text-selector-preview {
    color: #1E293B !important;
}

/* ==================== 认证页面 ==================== */
.auth-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--bg-dark) 0%, #1e2233 100%);
}

.auth-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.auth-header {
    text-align: center;
    margin-bottom: 32px;
}

.auth-header h1 {
    font-family: var(--font-sans);
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.auth-header .tagline {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.auth-box {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow);
}

.auth-box h2 {
    font-family: var(--font-sans);
    font-size: 1.5rem;
    margin-bottom: 24px;
    text-align: center;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
    font-family: var(--font-sans);
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: var(--font-sans);
    transition: var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.form-group .hint {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* 通用表单输入(input / textarea)样式: 撑满父容器, 与标题输入框一致 */
.form-input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    box-sizing: border-box;
    transition: var(--transition);
}
.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}
textarea.form-input {
    resize: vertical;
    min-height: 100px;
    line-height: 1.6;
    font-family: var(--font-sans);
}

.btn {
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: var(--font-sans);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.form-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.form-footer a {
    color: var(--primary);
    text-decoration: none;
    font-size: 0.9rem;
}

.form-footer a:hover {
    text-decoration: underline;
}

.btn-link {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.9rem;
    font-family: var(--font-sans);
}

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

.api-config {
    background: var(--bg-dark);
    padding: 16px;
    border-radius: var(--radius-md);
    margin-top: 12px;
}

.error-msg {
    color: var(--warning);
    text-align: center;
    margin-top: 16px;
    font-size: 0.9rem;
}

.auth-footer {
    text-align: center;
    margin-top: 24px;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.auth-footer p {
    margin: 4px 0;
}

/* ==================== 主界面 - 四列布局 ==================== */
.main-layout {
    display: grid;
    /* 1:1:3:1 比例分配 */
    grid-template-columns: 1fr 1fr 3fr 1fr;
    height: 100vh;
    gap: 0;
}

/* 响应式 - 平板 */
@media (max-width: 1400px) {
    .main-layout {
        grid-template-columns: 1fr 1fr 3fr 1fr;
    }
}

/* 列通用样式 */
.column {
    background: var(--bg-card);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.column:last-child {
    border-right: none;
}

.column-header {
    padding: 0 12px;
    border-bottom: 1px solid var(--border);
    font-family: var(--font-sans);
    font-weight: 700;
    font-size: 1.08rem;
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
    height: 56px;
    box-sizing: border-box;
    letter-spacing: 0.2px;
}

.column-header-title {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    min-width: 0;
}

.btn-icon-logout {
    width: 26px;
    height: 26px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.18s ease;
    padding: 0;
    flex-shrink: 0;
}
.btn-icon-logout:hover {
    background: rgba(239, 68, 68, 0.12);
    color: var(--danger, #ef4444);
    transform: translateX(1px);
}
.btn-icon-logout svg { display: block; }

.column-content {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

/* ==================== 第一列：叙事列表 ==================== */
.story-list {
    list-style: none;
}

.story-item {
    padding: 14px 16px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 10px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    position: relative;
}

.story-item:hover {
    background: var(--bg-hover);
    border-color: var(--primary);
    transform: translateX(2px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

body.light-theme .story-item:hover {
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.15);
}

.story-item.active {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.18), rgba(139, 92, 246, 0.18));
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.25), 0 4px 12px rgba(99, 102, 241, 0.18);
}

body.light-theme .story-item.active {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(139, 92, 246, 0.12));
}

.story-item-rename {
    position: absolute;
    top: 8px;
    right: 8px;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
    padding: 4px 8px;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.15s, background 0.15s;
    font-size: 0.85rem;
}

.story-item:hover .story-item-rename {
    opacity: 1;
}

.story-item-rename:hover {
    background: rgba(168, 85, 247, 0.15);
    border-color: rgba(168, 85, 247, 0.3);
}

/* 叙事卡片的行布局：左文本 + 右标签（靠右） */
.story-item-row {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 4px;
}
.story-item-row .story-item-row-text {
    flex: 1 1 auto;
    min-width: 0;
}
.story-item-row .story-tag {
    flex: 0 0 auto;
    max-width: 110px;
}

.story-item-title-row {
    align-items: center;
}
.story-item-title-row .story-item-row-text {
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
    word-break: break-word;
    line-height: 1.4;
}
.story-item-preview-row .story-item-row-text {
    font-size: 0.78rem;
    color: var(--text-secondary);
    /* 摘要单行截断, 能显示多少就显示多少 */
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.4;
}

.story-item-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-bottom: 8px;
}

.story-tag {
    display: inline-block;
    padding: 2px 9px;
    border-radius: 10px;
    font-size: 0.72rem;
    line-height: 1.55;
    font-weight: 500;
    background: rgba(99, 102, 241, 0.15);
    color: var(--text-secondary);
    border: 1px solid transparent;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.story-tag-level[data-level="high"]   { background: rgba(239, 68, 68, 0.15);  color: #fca5a5; }
.story-tag-level[data-level="medium"] { background: rgba(59, 90, 190, 0.15); color: #93C5FD; }
.story-tag-level[data-level="low"]    { background: rgba(34, 197, 94, 0.15);  color: #86EFAC; }
body.light-theme .story-tag-level[data-level="high"]   { background: rgba(239, 68, 68, 0.12);  color: #B91C1C; }
body.light-theme .story-tag-level[data-level="medium"] { background: rgba(59, 90, 190, 0.12); color: #1D4ED8; }
body.light-theme .story-tag-level[data-level="low"]    { background: rgba(34, 197, 94, 0.12);  color: #15803D; }

.story-tag-tech {
    background: rgba(140, 70, 220, 0.12);
    color: #C4B5FD;
}
body.light-theme .story-tag-tech {
    background: rgba(140, 70, 220, 0.12);
    color: #6D28D9;
}

/* 旧的 .story-item-preview 样式已整合进 .story-item-preview-row, 保留以防万一被复用 */
.story-item-preview {
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.4;
}

.story-item-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    justify-content: space-between;
}

.story-status {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 6px;
}

.story-status.active {
    background: var(--accent);
}

.story-status.completed {
    background: var(--text-muted);
}

/* 阅读时长徽章 */
.story-duration {
    color: var(--text-muted);
    font-size: 0.75rem;
    margin-left: 4px;
}

/* 底部按钮 —— 与 notes-filter-bar 同高同 border-top */
.column-footer {
    padding: 10px 20px;
    border-top: 1px solid var(--border);
    background: var(--bg-card);
    display: flex;
    gap: 8px;
    flex-shrink: 0;
    min-height: 52px;
    align-items: center;
    box-sizing: border-box;
}

.column-footer .btn {
    flex: 1;
    padding: 0 10px;
    height: 32px;
    font-size: 0.85rem;
}

/* ==================== 第二列：交互内容 ==================== */
#chatColumn {
    display: flex;
    flex-direction: column;
}

.chat-container {
    display: flex;
    flex-direction: column;
    flex: 1;
    overflow: hidden;
}

/* ==================== 第三栏输入框（放在栏目内） ==================== */
.input-bar {
    padding: 10px 20px;
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    flex-shrink: 0;
    min-height: 52px;
    box-sizing: border-box;
    display: flex;
    align-items: center;
}

.input-bar .chat-input-wrapper {
    display: flex;
    gap: 10px;
    align-items: center;
    width: 100%;
}

.input-bar .chat-input {
    flex: 1;
    padding: 8px 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 20px;
    color: var(--text);
    font-size: 0.9rem;
    font-family: var(--font-sans);
    resize: none;
    min-height: 36px;
    max-height: 80px;
    box-sizing: border-box;
    overflow-y: auto;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.input-bar .chat-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.input-bar .send-btn {
    padding: 0 20px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
    height: 36px;
    line-height: 36px;
    font-size: 0.9rem;
    flex-shrink: 0;
    font-family: var(--font-sans);
}

.input-bar .send-btn:hover {
    background: var(--primary-hover);
}

.input-bar .send-btn:disabled {
    background: var(--border);
    cursor: not-allowed;
}

/* 输入框旁的"继续"按钮（蓝色）和"结束"按钮（红色）的样式 */
.input-bar .send-btn.btn-continue-story {
    background: var(--primary);
    color: #fff;
}
.input-bar .send-btn.btn-continue-story:hover {
    background: var(--primary-hover);
}
.input-bar .send-btn.btn-end-story {
    /* 结束按钮: 不抢眼, 与输入框融为一体, 专注叙事 */
    background: var(--bg-dark);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
}
.input-bar .send-btn.btn-end-story:hover {
    background: var(--bg-hover);
    color: var(--text-secondary);
    border-color: var(--text-muted);
}
.input-bar .send-btn.btn-end-story:disabled {
    background: var(--border);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.message {
    max-width: 85%;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.message.user {
    align-self: flex-end;
}

.message.assistant {
    align-self: flex-start;
}

.message-content {
    padding: 14px 18px;
    border-radius: var(--radius-lg);
    line-height: 1.8;
    font-size: var(--message-font-size);
}

.message.user .message-content {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-bottom-right-radius: 4px;
}

.message.assistant .message-content {
    background: var(--message-bg);
    border-bottom-left-radius: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.message-index {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 4px;
    padding: 0 4px;
    display: block;
}

.message.user .message-index {
    text-align: right;
    color: var(--accent-color);
}

.message-time {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 4px;
    padding: 0 4px;
}

.message.user .message-time {
    text-align: right;
}

/* 用户消息操作栏 */
.message-actions {
    display: none;
    flex-shrink: 0;
}

.message.user {
    position: relative;
}

.message.user:hover .message-actions,
.message.user.show-actions .message-actions {
    display: block;
}

.recall-btn {
    padding: 4px 10px;
    background: var(--bg-hover);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.75rem;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
}

.recall-btn:hover {
    background: var(--warning);
    border-color: var(--warning);
    color: white;
}

/* 用户消息的footer布局 */
.message.user .message-footer {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 8px;
    margin-top: 4px;
}

.message.user .message-footer .message-actions {
    order: 1;
}

.message.user .message-footer .message-time {
    order: 2;
}

.message.highlight-flash {
    animation: highlightFlash 1.5s ease-out;
}

@keyframes highlightFlash {
    0%, 100% { background: transparent; }
    25% { background: rgba(99, 102, 241, 0.3); }
}

/* 逻辑图节点点击 → 临时高亮关联文字 */
.node-temp-highlight {
    background: rgba(99, 102, 241, 0.35);
    color: inherit;
    padding: 1px 2px;
    border-radius: 3px;
    animation: nodeHighlightPulse 1.6s ease-out forwards;
}

@keyframes nodeHighlightPulse {
    0%   { background: rgba(99, 102, 241, 0.6); box-shadow: 0 0 6px rgba(99, 102, 241, 0.5); }
    100% { background: rgba(99, 102, 241, 0.2); box-shadow: none; }
}
/* 选择选项 */
.message-choices {
    margin-top: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.choice-btn {
    padding: 12px 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: calc(var(--message-font-size) * 0.85);
    font-family: var(--font-sans);
    cursor: pointer;
    text-align: left;
    transition: var(--transition);
    /* 修复：保证选项文字为完整一句话，长句自动换行、不要被截断 */
    white-space: normal;
    word-break: break-word;
    overflow-wrap: anywhere;
    line-height: 1.55;
    width: 100%;
    box-sizing: border-box;
}

.choice-btn:hover {
    background: var(--bg-hover);
    border-color: var(--primary);
}

.choice-btn.selected {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

/* AI 输出标签选择器 */
.ann-tag-picker {
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 6px 0 4px 0;
    padding: 0 2px;
    flex-wrap: wrap;
}

.ann-tag-btn {
    font-size: 0.72rem;
    padding: 3px 10px;
    border-radius: 12px;
    border: 1.5px solid var(--tag-color, #aaa);
    background: transparent;
    color: var(--tag-color, #888);
    cursor: pointer;
    transition: all 0.18s ease;
    font-family: var(--font-sans);
    white-space: nowrap;
}

/* 浅色主题下蓝/紫色偏浅，提升对比度 */
body.light-theme .ann-tag-btn[data-ann-tag="extension"] {
    color: #1e4a7a;
    border-color: #1e4a7a;
    background: rgba(59, 90, 190, 0.08);
}
body.light-theme .ann-tag-btn[data-ann-tag="extension"]:hover,
body.light-theme .ann-tag-btn[data-ann-tag="extension"].active {
    background: #1e4a7a;
    color: #fff;
}
body.light-theme .ann-tag-btn[data-ann-tag="inspiration"] {
    color: #1a5c28;
    border-color: #1a5c28;
    background: rgba(26, 92, 40, 0.08);
}
body.light-theme .ann-tag-btn[data-ann-tag="inspiration"]:hover,
body.light-theme .ann-tag-btn[data-ann-tag="inspiration"].active {
    background: #1a5c28;
    color: #fff;
}

.ann-tag-btn:hover {
    background: var(--tag-color);
    color: #fff;
    transform: scale(1.05);
}

.ann-tag-btn.active {
    background: var(--tag-color);
    color: #fff;
    font-weight: 600;
}

/* 用户消息标签徽章 */
.ann-tag-badge {
    display: inline-block;
    font-size: 0.68rem;
    padding: 2px 8px;
    border-radius: 10px;
    color: #fff;
    font-family: var(--font-sans);
    opacity: 0.85;
    cursor: default;
    white-space: nowrap;
    flex-shrink: 0;
    order: 1;
}

.message.user .ann-tag-badge {
    order: 1;
}

/* 输入提示 */
.input-hint {
    margin-top: 10px;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: var(--font-sans);
    font-style: italic;
}

/* 旧的 chat-input-area 保留但隐藏（为了兼容性） */
.chat-input-area {
    display: none !important;
}

.chat-input-wrapper {
    display: flex;
    gap: 12px;
    align-items: flex-end;
}

.chat-input {
    flex: 1;
    padding: 12px 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: var(--font-serif);
    resize: none;
    min-height: 44px;
    max-height: 120px;
}

.chat-input:focus {
    outline: none;
    border-color: var(--primary);
}

.chat-input::placeholder {
    color: var(--text-muted);
}

.send-btn {
    padding: 12px 20px;
    background: var(--primary);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
}

.send-btn:hover {
    background: var(--primary-dark);
}

/* 任务和进度面板 */
.status-panel {
    padding: 12px 16px;
    background: transparent;
    border-top: none;
    display: flex;
    gap: 16px;
    align-items: center;
    flex-wrap: wrap;
}

.progress-container {
    flex: 1;
    min-width: 120px;
}

.progress-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 4px;
    font-family: var(--font-sans);
}

.progress-bar {
    height: 6px;
    background: var(--bg-hover);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.5s ease, background 0.3s ease;
}

.progress-fill.safe {
    background: linear-gradient(90deg, var(--accent), #34D399);
}

.progress-fill.warning {
    background: linear-gradient(90deg, #FBBF24, var(--warning));
}

.progress-fill.danger {
    background: linear-gradient(90deg, var(--warning), #DC2626);
}

.tasks-list {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.task-tag {
    padding: 4px 10px;
    background: var(--bg-hover);
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-family: var(--font-sans);
}

/* ==================== 第三列：逻辑图 ==================== */
.graph-container {
    width: 100%;
    height: 100%;
    position: relative;
    display: flex;
    flex-direction: column;
    padding: 8px;
    overflow: hidden;
}

.graph-canvas {
    flex: 1 1 auto;
    width: 100%;
    min-height: 0;
    overflow: auto;
}

.graph-node {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4px 12px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 13px;
    color: #E5E7EB;
    cursor: pointer;
    user-select: none;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    box-sizing: border-box;
    font-family: var(--font-sans);
}

.graph-node:hover {
    border-color: var(--primary);
    background: var(--bg-hover);
}

.graph-node.current {
    border-color: var(--secondary);
    background: rgba(139, 92, 246, 0.2);
}

.graph-node.end {
    border-color: var(--accent);
    background: rgba(16, 185, 129, 0.2);
}

.graph-edges {
    stroke: #64748B;
    stroke-width: 2;
    fill: none;
}

/* 节点右键菜单 */
.node-context-menu {
    position: fixed;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 4px 0;
    min-width: 72px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1000;
}

.node-context-menu .menu-item {
    padding: 8px 14px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text);
    text-align: center;
}

.node-context-menu .menu-item:hover {
    background: var(--bg-hover);
}

.node-context-menu .menu-item.danger {
    color: #ef4444;
}

.node-context-menu .menu-item.danger:hover {
    background: rgba(239, 68, 68, 0.1);
}

.node-context-menu .menu-divider {
    height: 1px;
    background: var(--border);
    margin: 4px 0;
}

/* ==================== 第四列：完整文本（文学风格）=================== */
.full-text-container {
    font-size: 0.9rem;
    line-height: 1.8;
}

.story-text {
    font-family: var(--font-serif);
}

.story-title {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.story-subtitle {
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    font-style: italic;
    margin-bottom: 20px;
}

.story-divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 24px 0;
    width: 60%;
    margin-left: auto;
    margin-right: auto;
}

.story-paragraph {
    margin-bottom: 16px;
    text-indent: 2em;
    color: var(--text-primary);
    line-height: 1.9;
    position: relative;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 8px;
}

.role-label {
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 8px;
    padding: 4px 10px;
    border-radius: 12px;
    display: inline-block;
    letter-spacing: 0.5px;
}

.role-label.user {
    background: rgba(99, 102, 241, 0.2);
    color: var(--primary);
}

.role-label.ai {
    background: rgba(16, 185, 129, 0.2);
    color: #10b981;
}

.user-choice {
    padding: 12px 16px;
    margin: 20px 0;
    color: var(--text-secondary);
    font-style: italic;
    background: rgba(99, 102, 241, 0.05);
    border-left: 3px solid var(--primary);
    border-radius: 0 8px 8px 0;
}

.story-ending {
    text-align: center;
    color: var(--text-muted);
    margin-top: 24px;
    font-style: italic;
}

.reflection-section {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px dashed var(--border);
}

.reflection-section h3 {
    font-family: var(--font-sans);
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 12px;
    font-weight: normal;
}

.reflection-section p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.8;
    text-indent: 2em;
}

/* 情绪雷达图 */
.emotion-radar {
    padding: 16px;
    background: var(--bg-dark);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
}

/* ==================== 评价模态框（6 维度雷达图）==================== */
.modal-rating {
    max-width: 520px;
    width: 95%;
}
.rating-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 18px 20px 16px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}
.rating-card-header {
    margin-bottom: 10px;
}
.rating-card-tip {
    display: block;
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.55;
}
.rating-radar-wrap {
    position: relative;
    height: 380px;
    width: 100%;
    margin: 8px 0 4px;
}
.rating-radar-wrap canvas {
    cursor: grab;
}
.rating-radar-wrap canvas:active {
    cursor: grabbing;
}
.rating-form {
    margin-top: 14px;
}
.rating-form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}
.rating-comment {
    width: 100%;
    min-height: 70px;
    padding: 10px 12px;
    font-family: var(--font-sans);
    font-size: 13px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-input, var(--bg-dark));
    border: 1px solid var(--border-color);
    border-radius: 8px;
    resize: vertical;
    box-sizing: border-box;
}
.rating-comment:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}
.rating-card-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 16px;
}
.rating-empty {
    padding: 30px 16px;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
}
.rating-comment-display {
    margin-top: 14px;
    padding: 12px 14px;
    background: var(--bg-dark);
    border-left: 3px solid var(--primary);
    border-radius: 6px;
    min-height: 50px;
}
.rating-comment-text {
    font-size: 13px;
    line-height: 1.7;
    color: var(--text-primary);
    white-space: pre-wrap;
    word-break: break-word;
}
.rating-comment-empty {
    color: var(--text-muted);
    font-style: italic;
}

/* 社交卡片底部操作按钮 */
.social-card-actions {
    display: flex;
    gap: 8px;
    margin-top: 10px;
    padding-top: 8px;
    border-top: 1px dashed var(--border-color, rgba(148,163,184,0.2));
}
.social-card-rating-btn {
    padding: 4px 10px;
    font-size: 12px;
    background: var(--bg-dark);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    cursor: pointer;
    transition: var(--transition, 0.15s ease);
    font-family: var(--font-sans);
}
.social-card-rating-btn:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* 编辑叙事弹窗两侧卡片: 样式对称, 深色背景圆角容器 */
.edit-story-side-card {
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px 14px;
    display: flex;
    flex-direction: column;
}
.edit-story-side-card textarea {
    flex-shrink: 0;
}
.edit-story-rating-card {
    /* 让雷达图区域撑满高度, 与左侧摘要视觉对等 */
    flex: 1;
}
.edit-story-rating-card .rating-radar-wrap {
    flex: 1;
    min-height: 200px;
}
.edit-story-rating-mini {
    font-size: 12px;
    color: var(--text-secondary);
    min-height: 20px;
}
.edit-story-rating-mini .rating-mini-chip {
    margin-bottom: 4px;
}
.rating-mini-chip {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    padding: 2px 8px;
    background: var(--bg-card, var(--bg-dark));
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 11px;
    color: var(--text-primary);
}
.rating-mini-chip strong {
    color: var(--primary);
    font-weight: 700;
}
.rating-mini-avg {
    background: rgba(99,102,241,0.12);
    border-color: rgba(99,102,241,0.4);
}

.emotion-title {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

/* ==================== 笔记筛选栏 ==================== */
/* 笔记列顶部右上角：灰色圆圈触发颜色筛选 */
.notes-filter-trigger {
    position: relative;
    display: inline-flex;
    align-items: center;
    height: 100%;
    z-index: 100;
}
.color-filter-trigger {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: none;
    padding: 0;
    cursor: pointer;
    background: #c4c8cf;
    box-shadow: 0 0 0 1.5px var(--border);
    transition: var(--transition);
    display: block;
    margin-top: 1px;
}
.color-filter-trigger:hover,
.color-filter-trigger[aria-expanded="true"] {
    box-shadow: 0 0 0 2px var(--primary);
    transform: scale(1.08);
}
.filter-color-popup {
    position: fixed;
    display: none;
    flex-direction: row;
    gap: 6px;
    padding: 8px 10px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.18);
    z-index: 9999;
}
.filter-color-popup:not([hidden]) {
    display: flex;
}

/* 底部筛选条：仅搜索框，背景与列一致 → 顶线与左右 column 边线视觉等高 */
.notes-filter-bar {
    padding: 10px 20px;
    border-top: 1px solid var(--border);
    background: var(--bg-card);
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    min-height: 52px;
    box-sizing: border-box;
}

/* 颜色按钮共享样式 */
.color-filter-btn {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 2px solid var(--bg-card);
    cursor: pointer;
    transition: var(--transition);
    padding: 0;
    font-size: 0.65rem;
    color: var(--text-muted);
    box-shadow: 0 0 0 1.5px var(--border);
    flex-shrink: 0;
}

.color-filter-btn:hover {
    transform: scale(1.12);
    box-shadow: 0 0 0 1.5px var(--primary);
}

.color-filter-btn.active {
    box-shadow: 0 0 0 2px var(--primary);
    transform: scale(1.08);
}

.color-filter-btn[data-color="all"] {
    font-size: 0.6rem;
    background: var(--bg-card);
}

/* ==================== 第三列工具按钮 ==================== */
/* 与笔记列无关：第三列顶部右上角直接放普通方框按钮（.toolbar-tail / .toolbar-btn） */

body.dark-theme.main-page .notes-search-input {
    background: rgba(30, 20, 50, 0.3) !important;
}

.notes-search-input {
    flex: 1;
    min-width: 0;
    padding: 0 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 0.85rem;
    height: 32px;
    box-sizing: border-box;
}

.notes-search-input:focus {
    outline: none;
    border-color: var(--primary);
}

.notes-search-input:focus {
    outline: none;
    border-color: var(--primary);
}

/* ==================== 工具栏 ==================== */
.toolbar {
    padding: 0 12px 0 12px;
    height: 56px;
    background: var(--bg-card);
    border-top: none;
    border-right: none;
    border-left: none;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    flex-shrink: 0;
    box-sizing: border-box;
    gap: 14px;
}

/* 进度条：固定夹在编辑按钮 和 字号按钮之间 —— 不带任何顶部装饰横线 */
.toolbar-progress {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    max-width: 360px;
    min-width: 160px;
    justify-content: center;
    border-top: none;
    padding-top: 0;
    margin-top: 0;
}

.toolbar-progress-label {
    font-size: 0.78rem;
    color: var(--text-muted);
    white-space: nowrap;
}

/* toolbar 内的进度条：与主题匹配，确保任何主题下都没有 border-top */
.toolbar-progress .progress-bar {
    flex: 1;
    height: 6px;
    background: var(--bg-dark);
    border-radius: 999px;
    overflow: hidden;
    border: none;
    border-top: none;
}
.toolbar-progress .progress-fill {
    height: 100%;
    border-radius: 999px;
    transition: width var(--transition);
}

.toolbar-title {
    font-family: var(--font-sans);
    font-weight: 700;
    font-size: 1.08rem;
    cursor: pointer;
    line-height: 1.2;
    max-height: 32px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.toolbar-title:hover {
    color: var(--primary);
}

.toolbar-title-input {
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.95rem;
    background: var(--bg-card);
    border: 1px solid var(--primary);
    border-radius: 4px;
    padding: 4px 8px;
    color: var(--text);
    outline: none;
    min-width: 200px;
    max-width: 400px;
    height: 32px;
}

/* 编辑状态下：emoji + input 组合，emoji 始终保留在左 */
.toolbar-title-editing {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-width: 0;
}
.toolbar-title-emoji {
    font-size: 1.08rem;
    line-height: 1;
    user-select: none;
    flex-shrink: 0;
}

.story-item-title-input {
    width: 100%;
    font-size: 0.95rem;
    background: var(--bg-card);
    border: 1px solid var(--primary);
    border-radius: 4px;
    padding: 4px 8px;
    color: var(--text);
    outline: none;
}

/* toolbar 右侧：字号 A-/A+ 和 批注/导出/删除，整体间距统一为 8px */
.toolbar-tail {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-shrink: 0;
    margin-left: auto;
}

/* 标题区：标题与"编辑"按钮之间留出空间，不拥挤 */
.toolbar-title-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
    margin-right: auto;
}
.toolbar-title-wrapper .toolbar-title {
    flex: 0 1 auto;
    min-width: 0;
}

.toolbar-btn {
    padding: 6px 12px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.82rem;
    line-height: 1.2;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
    box-sizing: border-box;
    height: 30px;
    display: inline-flex;
    align-items: center;
}

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

.toolbar-btn.danger:hover {
    border-color: var(--warning);
    color: var(--warning);
}

.toolbar-btn.small {
    padding: 4px 10px;
    font-size: 0.78rem;
    height: 26px;
}

.toolbar-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white !important;
}

.font-size-controls {
    display: inline-flex;
    align-items: center;
    gap: 0;
    margin-right: 0;
}
.font-size-controls .toolbar-btn + .toolbar-btn {
    margin-left: -1px;
}
.font-size-controls .toolbar-btn:first-child {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}
.font-size-controls .toolbar-btn:last-child {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

/* 字号控件 hover 时仅高亮当前按钮 */
.font-size-controls .toolbar-btn:hover {
    position: relative;
    z-index: 1;
}

/* 可拖动分隔条 */
.column-resizer {
    position: absolute;
    width: 6px;
    height: 100%;
    background: transparent;
    cursor: col-resize;
    z-index: 10;
    transition: background 0.2s;
}

.column-resizer::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 2px;
    height: 40px;
    background: var(--border);
    border-radius: 2px;
    transition: background 0.2s, height 0.2s;
}

.column-resizer:hover::after,
.column-resizer:active::after {
    background: var(--primary);
    height: 60px;
}

.main-layout {
    position: relative;
}

/* ==================== 新建叙事对话框 ==================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 32px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(20px);
    transition: var(--transition);
}

.modal.modal-compact {
    padding: 20px 24px;
    max-width: 440px;
    width: 92%;
    max-height: 92vh;
}

/* 批注模态框（添加/编辑共用）—— 风格与浮动卡片统一 */
.modal.modal-annotation {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
    padding: 16px 18px;
    max-width: 380px;
    width: 92%;
    max-height: 92vh;
    overflow-y: auto;
}
.modal.modal-annotation .modal-header.annotation-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
    cursor: default;
    user-select: auto;
}
.modal.modal-annotation .annotation-card-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--primary);
}
.modal.modal-annotation .annotation-card-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
    padding: 0 4px;
}
.modal.modal-annotation .annotation-card-close:hover {
    color: var(--text);
}
.modal.modal-annotation .annotation-card-preview-block {
    background: var(--bg-dark);
    border-radius: 6px;
    padding: 8px 10px;
    margin-bottom: 10px;
    max-height: 80px;
    overflow-y: auto;
}
.modal.modal-annotation .annotation-label {
    font-size: 0.72rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.modal.modal-annotation .annotation-text {
    font-size: 0.85rem;
    color: var(--text-primary);
    line-height: 1.5;
    word-break: break-word;
}
.modal.modal-annotation .annotation-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
}
.modal.modal-annotation .annotation-card-input-block {
    margin-bottom: 12px;
}
.modal.modal-annotation .annotation-card-textarea {
    width: 100%;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 10px;
    color: var(--text);
    font-size: 0.85rem;
    resize: vertical;
    min-height: 60px;
    max-height: 120px;
    box-sizing: border-box;
    font-family: inherit;
}
.modal.modal-annotation .annotation-card-textarea:focus {
    outline: none;
    border-color: var(--primary);
}
.modal.modal-annotation .annotation-card-actions {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 8px;
    margin-top: 6px;
}
.modal.modal-annotation .annotation-card-actions .btn {
    min-width: 70px;
    padding: 6px 14px;
    font-size: 0.85rem;
    height: 32px;
    box-sizing: border-box;
}

.modal.modal-compact .form-group {
    margin-bottom: 12px;
}

.modal.modal-compact .annotation-selected-text {
    margin-bottom: 12px;
    padding: 10px 12px;
}

.modal.modal-compact textarea {
    min-height: 70px;
    max-height: 140px;
    resize: vertical;
    padding: 10px 12px;
}

/* modal-compact 内：label / selected-text / textarea 左右对齐到同一基线 */
.modal.modal-compact .form-group label,
.modal.modal-compact .annotation-label {
    padding: 0;
    margin-left: 0;
    box-sizing: border-box;
}
.modal.modal-compact textarea,
.modal.modal-compact .chat-input {
    margin: 0;
    box-sizing: border-box;
}

/* 编辑批注卡片：和添加批注一样小巧，selected-text 也压缩 */
.modal.modal-compact .annotation-selected-text {
    padding: 8px 12px;
    margin-bottom: 10px;
}
.modal.modal-compact .annotation-selected-text .annotation-label {
    margin-bottom: 4px;
    font-size: 0.72rem;
}
.modal.modal-compact .annotation-selected-text .annotation-text {
    padding: 0;
    font-size: 0.82rem;
    line-height: 1.45;
    max-height: 60px;
    overflow: auto;
}

/* 通用确认 modal */
.modal.modal-confirm {
    max-width: 360px;
    padding: 24px;
}
.modal-body.confirm-message {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 20px;
}
.confirm-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}
.confirm-actions .btn {
    width: auto;
    min-width: 80px;
    padding: 8px 18px;
    font-size: 0.85rem;
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.modal-title {
    font-family: var(--font-sans);
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.5rem;
    line-height: 1;
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal .settings-select,
.modal .settings-input {
    width: 100%;
    padding: 8px 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 0.9rem;
    box-sizing: border-box;
}

.modal .settings-select:focus,
.modal .settings-input:focus {
    outline: none;
    border-color: var(--primary);
}

/* 模型选择器 */
.model-picker {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.model-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.model-chip {
    padding: 6px 14px;
    border-radius: 20px;
    border: 1px solid var(--border);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
}

.model-chip:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.model-chip.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

/* 技术库 */
.tech-library {
    margin-top: 20px;
}

.tech-category {
    margin-bottom: 16px;
}

.tech-category-title {
    font-family: var(--font-sans);
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.tech-items {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tech-item {
    padding: 6px 12px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
}

.tech-item:hover {
    border-color: var(--primary);
    background: var(--bg-hover);
}

.tech-item.selected {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

/* 社交空间 */
.social-container {
    padding: 20px;
}

.social-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.social-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.social-card {
    background: var(--bg-dark);
    border-radius: var(--radius-md);
    padding: 16px;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
    position: relative;
}

.social-card-own {
    border-color: rgba(99, 102, 241, 0.35);
}

.social-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 20px;
    margin-bottom: 6px;
}

.owner-badge {
    display: inline-block;
    padding: 1px 8px;
    border-radius: 10px;
    font-size: 0.7rem;
    background: var(--primary);
    color: white;
    font-weight: 500;
}

.social-card-delete {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-muted);
    width: 22px;
    height: 22px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
    padding: 0;
    opacity: 0;
    transition: var(--transition);
}

.social-card:hover .social-card-delete {
    opacity: 1;
}

.social-card-delete:hover {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
    border-color: rgba(239, 68, 68, 0.4);
}

.social-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.social-card-highlighted {
    border-color: var(--primary) !important;
    background: rgba(99, 102, 241, 0.15) !important;
    animation: highlightFlash 1.5s ease-out;
}

.social-card-title {
    font-family: var(--font-sans);
    font-weight: 500;
    margin-bottom: 8px;
}

.social-card-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 4px;
}

.model-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.72rem;
    background: var(--primary);
    color: white;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 120px;
}
.my-works-detail-status {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 10px;
    font-size: 0.75rem;
    font-weight: 500;
}

.my-works-detail-status.active {
    background: rgba(99, 102, 241, 0.15);
    color: #818CF8;
}

.my-works-detail-status.completed {
    background: rgba(34, 197, 94, 0.15);
    color: #4ADE80;
}

/* ==================== 社群作品详情视图 ==================== */
.social-detail-view {
    padding: 4px 4px 24px;
}

.social-detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin-bottom: 16px;
}

.social-detail-text {
    white-space: pre-wrap;
    line-height: 1.85;
    font-size: 0.95rem;
    color: var(--text-primary);
    max-width: 720px;
}

.back-to-social-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    font-family: var(--font-sans);
    margin-bottom: 12px;
    transition: var(--transition);
}

.back-to-social-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.social-detail-meta {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-bottom: 12px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.social-detail-author {
    font-weight: 500;
}

.social-detail-theme {
    padding: 2px 8px;
    border-radius: 10px;
    background: var(--bg-secondary, rgba(0,0,0,0.05));
    font-size: 0.8rem;
}

.social-detail-section-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.social-detail-completed {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 12px;
}

.social-detail-text {
    white-space: pre-wrap;
    line-height: 1.7;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.social-msg {
    padding: 10px 14px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-card);
}

.social-msg-role {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.social-msg-content {
    white-space: pre-wrap;
    line-height: 1.6;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.social-msg.msg-user {
    background: rgba(99, 102, 241, 0.06);
    border-color: rgba(99, 102, 241, 0.2);
}

/* ==================== 移动端导航 ==================== */
.mobile-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    display: none;
    justify-content: space-around;
    padding: 8px 0;
    z-index: 100;
}

.mobile-nav-btn {
    padding: 10px 16px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: var(--transition);
}

.mobile-nav-btn.active {
    color: var(--primary);
    font-weight: 500;
}

/* ==================== 按钮图标 ==================== */
.btn-icon {
    width: 28px;
    height: 28px;
    border: none;
    background: var(--bg-hover);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.btn-icon:hover {
    background: var(--primary);
    color: white;
}

.btn-icon.primary {
    background: var(--primary);
    color: white;
}

.btn-icon.primary:hover {
    background: var(--primary-hover, #5a5dd1);
    transform: scale(1.05);
}

.btn-secondary {
    background: var(--bg-dark);
    border: 1px solid var(--border);
    color: var(--text-secondary);
}

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

/* 小按钮 */
.btn-sm {
    padding: 6px 14px;
    font-size: 0.8rem;
    border-radius: var(--radius-sm);
    width: auto;
}

/* 描边按钮 */
.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 6px 14px;
    font-size: 0.8rem;
    border-radius: var(--radius-sm);
    width: auto;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-sans);
}
.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(99, 102, 241, 0.08);
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1200px) {
    .main-layout {
        grid-template-columns: 1fr 1fr 3fr 1fr;
    }
}

@media (max-width: 992px) {
    .main-layout {
        grid-template-columns: 1fr;
    }
    
    .column {
        display: none;
    }
    
    .column.active {
        display: flex;
    }
    
    .mobile-nav {
        display: flex;
    }
}

@media (max-width: 768px) {
    .auth-box {
        padding: 24px;
    }
    
    .auth-header h1 {
        font-size: 2rem;
    }
    
    .modal {
        padding: 24px;
        width: 95%;
    }
}

/* ==================== 加载状态 ==================== */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-spinner-small {
    width: 16px;
    height: 16px;
    border: 2px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    display: inline-block;
    margin-right: 8px;
    vertical-align: middle;
}

.loading-message .message-content {
    display: flex;
    align-items: center;
    font-style: italic;
    color: var(--text-muted);
}

/* ==================== 空状态 ==================== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state-title {
    font-family: var(--font-sans);
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.empty-state-desc {
    font-size: 0.9rem;
}

/* ==================== 通知 ==================== */
/* 默认完全不可见（避免屏幕右下方出现空内容 + shadow 的方块） */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 14px 20px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    z-index: 2000;
    transform: translateX(120%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s ease, opacity 0.3s ease, visibility 0s linear 0.3s;
}

.toast.show {
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
    transition: transform 0.3s ease, opacity 0.3s ease, visibility 0s linear 0s;
}

.toast.success {
    border-left: 4px solid var(--accent);
}

.toast.error {
    border-left: 4px solid var(--warning);
}

/* ==================== 开关样式 ==================== */
.toggle-group {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    background: var(--bg-dark);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
}

.toggle-label {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.toggle-label span:first-child {
    font-weight: 500;
    color: var(--text-primary);
}

.toggle-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.switch {
    position: relative;
    display: inline-block;
    width: 52px;
    height: 28px;
    flex-shrink: 0;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg-hover);
    transition: 0.3s;
    border-radius: 28px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 22px;
    width: 22px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.3s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--primary);
}

input:checked + .slider:before {
    transform: translateX(24px);
}

/* ==================== 批注功能样式 ==================== */

/* 笔记栏头部按钮 */
.notes-header-actions {
    display: flex;
    gap: 6px;
}

/* 笔记容器 */
// 笔记容器
.notes-container {
    padding: 12px;
}

.notes-empty-hint {
    text-align: center;
    padding: 20px 16px;
    color: var(--text-muted);
}

.notes-empty-hint .hint-icon {
    font-size: 2rem;
    margin-bottom: 12px;
    opacity: 0.4;
}

.notes-empty-hint p {
    font-size: 0.85rem;
    line-height: 1.5;
}

/* 批注卡片（笔记项）—— 三行结构：标签+编辑 / 原文引用 / 笔记内容 */
.annotation-card {
    background: transparent;
    border-radius: 0;
    padding: 10px 12px 10px 16px;
    margin-bottom: 8px;
    border: none;
    position: relative;
    cursor: pointer;
    transition: background 0.18s ease, transform 0.18s ease;
    box-shadow: none;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

/* 左侧彩色竖线：渐变 + 圆角端点 + 柔光 */
.annotation-card::before {
    content: "";
    position: absolute;
    left: 4px;
    top: 10px;
    bottom: 10px;
    width: 3px;
    border-radius: 999px;
    background: linear-gradient(
        180deg,
        color-mix(in srgb, var(--annotation-color, #9ca3af) 55%, transparent) 0%,
        var(--annotation-color, #9ca3af) 35%,
        var(--annotation-color, #9ca3af) 65%,
        color-mix(in srgb, var(--annotation-color, #9ca3af) 55%, transparent) 100%
    );
    box-shadow: 0 0 4px color-mix(in srgb, var(--annotation-color, #9ca3af) 35%, transparent);
}

.annotation-card:hover {
    background: var(--bg-hover);
    transform: translateX(2px);
}

.annotation-card.hidden {
    display: none;
}

/* 第一行：标签在左 + 编辑按钮在右（justify-content: space-between） */
.annotation-card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    min-width: 0;
}

/* 标签：放在行首，# 开头，小巧圆角，字号和编辑按钮一致 */
.annotation-card .annotation-tag {
    flex: 0 0 auto;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.3px;
    line-height: 1.4;
}

/* 引文（原文），仅显示 1 行省略：文字用标签同色斜体，无背景框无竖线 */
.annotation-card .annotation-quote {
    color: var(--annotation-color, #888888);
    font-size: 14.5px;
    line-height: 22px;
    font-style: italic;
    display: block;
    overflow: hidden;
    padding: 2px 0;
    background: transparent;
    border-radius: 0;
    border: none;
    word-break: break-word;
    white-space: nowrap;
    text-overflow: ellipsis;
    /* 锁 1 行 = 20 + 2*2 = 24px */
    height: 24px;
    box-sizing: border-box;
}
.annotation-card .annotation-quote::after {
    display: none;
}

/* 笔记（用户输入内容）—— 仅显示 1 行省略 */
.annotation-card .annotation-note {
    color: var(--text);
    font-size: 0.95rem;
    line-height: 1.55;
    display: block;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    word-break: break-word;
    max-height: calc(0.85rem * 1.5);
}

.annotation-note-empty {
    color: var(--text-muted);
    font-style: italic;
    font-size: 0.8rem;
}

/* 编辑按钮：图标+文字的小按钮，浅色描边 */
.annotation-card .annotation-actions-btn {
    flex: 0 0 auto;
    margin-left: auto;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 3px 10px;
    border-radius: 14px;
    font-size: 0.74rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
    line-height: 1.4;
    white-space: nowrap;
}
.annotation-card .annotation-actions-btn:hover {
    background: var(--annotation-color, #888888);
    border-color: var(--annotation-color, #6fa572);
    color: #fff;
}
.annotation-card .annotation-actions-btn svg {
    flex: 0 0 auto;
}

.annotation-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 6px;
    font-size: 0.7rem;
    color: var(--text-muted);
}

.annotation-actions-btn {
    padding: 3px 6px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.65rem;
    transition: var(--transition);
}

.annotation-actions-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* 高亮颜色定义（与左侧笔记标签莫兰迪色系统一） */
.highlight-yellow       { background: #FEF08A; }
.highlight-green        { background: #D8EAD8; }
.highlight-blue         { background: #CCE0ED; }
.highlight-pink         { background: #F5D8E2; }
.highlight-orange       { background: #F5DCC8; }
.highlight-purple       { background: #E2D8F0; }
.highlight-default      { background: #E2E8F0; }
/* 新标签高亮颜色 */
.highlight-inspiration  { background: #D8EAD8; }  /* 绿色 */
.highlight-extension    { background: #CCE0ED; }  /* 蓝色 */
.highlight-thinking     { background: #F0E2B8; }  /* 驼色 */
.highlight-misunderstanding { background: #F5D8D8; }  /* 桃红 */

/* 选中文字时的光标 */
.message-content ::selection {
    background: rgba(99, 102, 241, 0.3);
}

/* 深色主题下的高亮颜色 */
body.dark-theme .highlight-yellow  { background: #6B5E1A; }
body.dark-theme .highlight-green        { background: #2D4A2D; }
body.dark-theme .highlight-blue       { background: #3D5A8A; }
body.dark-theme .highlight-pink        { background: #5A3D4A; }
body.dark-theme .highlight-orange      { background: #5A4A2D; }
body.dark-theme .highlight-purple      { background: #4A3D5A; }
body.dark-theme .highlight-default     { background: #3A4555; color: #E5E7EB; }
/* 新标签深色主题高亮 */
body.dark-theme .highlight-inspiration { background: #2D4A2D; }  /* 绿色 */
body.dark-theme .highlight-extension   { background: #3D5A8A; }  /* 蓝色 */
body.dark-theme .highlight-thinking    { background: #4A3D2D; }  /* 驼色 */
body.dark-theme .highlight-misunderstanding { background: #5A2D2D; }  /* 桃红 */

/* 批注表单 */
.annotation-selected-text {
    background: var(--bg-dark);
    border-radius: var(--radius-md);
    padding: 12px;
    margin-bottom: 16px;
}

.annotation-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 6px;
    font-family: var(--font-sans);
}

.annotation-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-style: italic;
    line-height: 1.6;
}

/* 颜色选择器 */
.color-picker {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.color-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
}

.color-btn:hover {
    transform: scale(1.15);
}

.color-btn.active {
    border-color: var(--text-primary);
    box-shadow: 0 0 0 2px var(--bg-card), 0 0 0 4px currentColor;
}

.color-btn.yellow { --annotation-color: #FEF08A; }
.color-btn.green { --annotation-color: #BBF7D0; }
.color-btn.blue { --annotation-color: #BFDBFE; }
.color-btn.pink { --annotation-color: #FBCFE8; }
.color-btn.orange { --annotation-color: #FED7AA; }
.color-btn.purple { --annotation-color: #DDD6FE; }
.color-btn.gray { --annotation-color: #D1D5DB; }

/* 批注操作按钮 */
.annotation-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 20px;
    gap: 12px;
}

.annotation-actions-right {
    display: flex;
    gap: 12px;
}

/* 编辑批注：删除按钮靠左，取消/保存靠右（与添加批注卡片完全一致） */
.annotation-actions.annotation-actions-3 {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    margin-top: 18px;
}
.annotation-actions.annotation-actions-3 .btn {
    width: auto;
    padding: 7px 16px;
    font-size: 0.85rem;
    min-width: 80px;
    height: 32px;
    box-sizing: border-box;
}
.annotation-actions.annotation-actions-3 .annotation-actions-right {
    display: flex;
    gap: 10px;
}
.annotation-actions.annotation-actions-3 .annotation-actions-right .btn {
    min-width: 80px;
}

/* 添加批注的两按钮：取消/保存并排，与编辑批注按钮风格完全一致 */
.annotation-actions:not(.annotation-actions-3) {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 18px;
}
.annotation-actions:not(.annotation-actions-3) .btn {
    width: auto;
    min-width: 80px;
    padding: 7px 16px;
    font-size: 0.85rem;
    height: 32px;
    box-sizing: border-box;
}

.btn-danger {
    background: var(--warning);
    color: white;
    border: none;
}

.btn-danger:hover {
    background: #DC2626;
}

.btn-secondary {
    background: var(--bg-dark);
    border: 1px solid var(--border);
    color: var(--text-secondary);
}

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

/* 筛选按钮组 */
.filter-btn-group {
    display: flex;
    gap: 6px;
    margin-bottom: 12px;
}

.filter-btn {
    padding: 6px 12px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 20px;
    color: var(--text-muted);
    font-size: 0.75rem;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover {
    background: var(--bg-hover);
    color: var(--text-secondary);
}

.filter-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white !important;
}

/* 高亮文字提示 */
.annotated-text {
    cursor: pointer;
    border-radius: 2px;
    padding: 0 2px;
    transition: var(--transition);
}

.annotated-text:hover {
    filter: brightness(1.1);
}

/* 显示/隐藏批注的开关 */
.annotation-toggle-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
}

.annotation-toggle-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* 笔记列表中的颜色标记 —— 与添加批注 modal tag-btn 边框色统一 */
.note-color-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 6px;
    box-shadow: 0 0 0 1.5px var(--bg-card);
}

.note-color-dot.misunderstanding { background: #c47070; }
.note-color-dot.thinking { background: #c4a55a; }
.note-color-dot.extension { background: #1e4a7a; }
.note-color-dot.inspiration { background: #1a5c28; }
.note-color-dot.default { background: #888888; }

/* 浅色主题下的高亮颜色（与左侧笔记标签莫兰迪浅色保持一致） */
body.light-theme .highlight-yellow       { background: #FEF08A; }
body.light-theme .highlight-green        { background: #D8EAD8; }
body.light-theme .highlight-blue         { background: #CCE0ED; }
body.light-theme .highlight-pink         { background: #F5D8E2; }
body.light-theme .highlight-orange       { background: #F5DCC8; }
body.light-theme .highlight-purple       { background: #E2D8F0; }
body.light-theme .highlight-default      { background: #E8E8E8; }
/* 新标签浅色主题高亮 */
body.light-theme .highlight-inspiration  { background: #D8EAD8; }  /* 绿色 */
body.light-theme .highlight-extension    { background: #CCE0ED; }  /* 蓝色 */
body.light-theme .highlight-thinking     { background: #F0E2B8; }  /* 驼色 */
body.light-theme .highlight-misunderstanding { background: #F5D8D8; }  /* 桃红 */

/* ==================== 逻辑图节点添加功能样式 ==================== */

/* 输入框字数计数器 */
.input-with-counter {
    position: relative;
}

.input-with-counter .chat-input {
    padding-right: 50px;
}

.char-counter {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: var(--font-sans);
    pointer-events: none;
}

/* 节点文本预览 */
.graph-node-text-preview {
    padding: 12px;
    background: var(--bg-dark);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    color: var(--text-secondary);
    min-height: 60px;
    max-height: 120px;
    overflow-y: auto;
    line-height: 1.6;
    word-break: break-word;
}

/* 复选框标签 */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* 表单操作按钮 */
.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 20px;
}

/* 文本选择器容器 */
.text-selector-container {
    margin-top: 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-dark);
    overflow: hidden;
}

.text-selector-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 12px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.text-selector-list {
    max-height: 200px;
    overflow-y: auto;
}

.text-selector-item {
    padding: 10px 12px;
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 1px solid var(--border);
}

.text-selector-item:last-child {
    border-bottom: none;
}

.text-selector-item:hover {
    background: var(--bg-hover);
}

.text-selector-item.selected {
    background: rgba(99, 102, 241, 0.2);
    border-left: 3px solid var(--primary);
}

.text-selector-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 4px;
    font-family: var(--font-sans);
}

.text-selector-preview {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.text-selector-empty {
    padding: 20px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* 节点内容来源切换 tab */
.node-source-tabs {
    display: flex;
    gap: 6px;
    background: var(--bg-dark);
    padding: 4px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

.node-source-tab {
    flex: 1;
    padding: 8px 12px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.85rem;
    transition: var(--transition);
    font-family: var(--font-sans);
}

.node-source-tab:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.node-source-tab.active {
    background: var(--primary);
    color: #fff;
    font-weight: 500;
}

/* 已选内容预览 */
.selected-preview {
    padding: 10px 12px;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
    max-height: 120px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-word;
}

.btn-link {
    background: none;
    border: none;
    color: var(--primary);
    cursor: pointer;
    font-size: 0.8rem;
    padding: 4px 0;
    text-decoration: underline;
    margin-top: 6px;
    font-family: var(--font-sans);
}

.btn-link:hover {
    color: var(--primary-hover, #5a5dd1);
}

/* 节点高亮效果 */
.message.node-highlight {
    animation: nodeHighlight 2s ease-out;
}

@keyframes nodeHighlight {
    0% {
        box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.6);
    }
    100% {
        box-shadow: 0 0 0 0 transparent;
    }
}

/* 逻辑图空状态提示 */
.graph-empty-hint {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.graph-empty-hint .hint-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
    opacity: 0.5;
}

.graph-empty-hint p {
    font-size: 0.85rem;
    line-height: 1.5;
}

/* 逻辑图区域按钮 */
.graph-header-actions {
    display: flex;
    gap: 6px;
}

.graph-footer-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-top: 1px solid var(--border);
    background: var(--bg-card);
    flex-shrink: 0;
    min-height: 52px;
    box-sizing: border-box;
}

/* 中间的 pan 按钮：默认透明、激活时蓝色填充 */
.graph-tool-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.graph-tool-btn.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.graph-tool-btn svg {
    flex-shrink: 0;
}

/* pan 模式：画布鼠标变 grab，拖拽时 grabbing */
.graph-canvas.pan-mode {
    cursor: grab;
}
.graph-canvas.pan-mode.panning {
    cursor: grabbing;
    user-select: none;
}

.graph-footer-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* 各列底部按钮统一高度（"我的叙事" / 逻辑图 / 输入框底部栏） */
.column-footer .btn,
.column-footer button,
.graph-footer-actions .toolbar-btn.small,
.graph-footer-actions .theme-toggle-inline,
.input-bar .send-btn {
    min-height: 32px;
    height: 32px;
    box-sizing: border-box;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.column-footer .btn {
    padding: 0 16px;
    font-size: 0.85rem;
    line-height: 1;
}

/* 逻辑图 footer：缩小 / 放大 / 主题三个按钮统一尺寸 */
.graph-footer-actions .toolbar-btn.small,
.graph-footer-actions .theme-toggle-inline {
    padding: 0 14px;
    font-size: 0.85rem;
    line-height: 1;
    min-width: 36px;
    min-height: 32px;
    box-sizing: border-box;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* 内嵌主题按钮：基础外观（与 toolbar-btn 同款） */
.theme-toggle-inline {
    position: static;
    width: auto;
    height: auto;
    min-width: 32px;
    padding: 8px 14px;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-size: 0.85rem;
    font-family: var(--font-sans);
    box-shadow: none;
    backdrop-filter: none;
}

.theme-toggle-inline:hover {
    background: var(--bg-hover);
    border-color: var(--primary);
    color: var(--primary);
    transform: none;
}

/* 兼容旧 .theme-toggle 圆角浮按钮：保留以便逻辑图 modal 内单独使用 */
.theme-toggle {
    position: static;
}

/* 页面右上角：深浅模式切换按钮容器 */
.theme-toggle-fixed {
    position: fixed;
    top: 14px;
    right: 18px;
    z-index: 1000;
    pointer-events: auto;
}

/* 右上角主题按钮：圆形悬浮按钮样式 */
.theme-toggle-fixed .theme-toggle-inline {
    width: 40px;
    height: 40px;
    min-width: 40px;
    padding: 0;
    border-radius: 50%;
    background: var(--bg-card);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    backdrop-filter: blur(8px);
}

.theme-toggle-fixed .theme-toggle-inline:hover {
    background: var(--bg-hover);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-1px);
}

.theme-toggle-fixed .theme-toggle-inline .theme-icon {
    font-size: 1.1rem;
    line-height: 1;
}

.btn-icon.small {
    font-size: 0.7rem;
    padding: 4px 8px;
}

/* 逻辑图添加节点按钮：文字+图标，明显与缩放 +/- 区分 */
.graph-action-add {
    width: auto !important;
    height: 28px;
    padding: 0 10px !important;
    background: var(--primary);
    color: #fff;
    font-size: 0.78rem;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: var(--transition);
    font-family: var(--font-sans);
}
.graph-action-add:hover {
    background: #5a5dd1;
    transform: translateY(-1px);
}

/* AI 参与程度选择器 */
.ai-level-selector {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 8px;
}

.ai-level-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-dark);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    color: var(--text-primary);
}

.ai-level-btn:hover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

.ai-level-btn.active {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.15);
}

.ai-level-btn.active .ai-level-title {
    color: var(--primary);
    font-weight: 700;
}

.ai-level-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.ai-level-btn .ai-level-title {
    font-weight: 600;
    font-size: 1rem;
    min-width: 24px;
    color: #ffffff;
}

.ai-level-btn .ai-level-desc {
    color: #c8ccd8;
}

.ai-level-desc {
    font-size: 0.9rem;
    line-height: 1.55;
    color: #b8bcc8;
    flex: 1;
}

/* 高参与度：技术选择网格 */
.ai-tech-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin-top: 12px;
}

.ai-tech-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 16px 8px;
    background: var(--bg-dark);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
}

.ai-tech-btn:hover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

.ai-tech-btn.selected {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.15);
}

.ai-tech-icon {
    font-size: 1.8rem;
}

.ai-tech-name {
    font-size: 0.9rem;
    font-weight: 500;
    line-height: 1.55;
    color: #ffffff;
}

/* 高参与度：问题面板 */
.ai-questions-panel {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 16px;
    padding: 16px;
    background: var(--bg-dark);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

.ai-question-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ai-question-item label {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
}

.ai-question-item .chat-input {
    margin: 0;
}

/* 低参与度：故事开头 */
.ai-low-panel {
    margin-top: 16px;
}

.ai-low-panel label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
}

/* 底部备案信息 */
.site-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    text-align: center;
    padding: 4px 10px;
    font-size: 0.7rem;
    color: var(--text-muted);
    z-index: 5;
    background: transparent;
    border-radius: 0;
    pointer-events: none;
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    display: flex;
    justify-content: center;
    align-items: center;
}
.site-footer a {
    pointer-events: auto;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
    flex: 0 0 auto;
}

.site-footer a:hover {
    color: var(--primary);
}

/* ==================== 批注标签样式 ==================== */
.tag-picker {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
}

.tag-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    border: 1.5px solid transparent;
    border-radius: 20px;
    background: var(--bg-dark);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.85rem;
    color: var(--text-primary);
    font-weight: 400;
    letter-spacing: 0;
}

.tag-btn:hover {
    border-color: var(--border);
    transform: translateY(-1px);
}

.tag-btn.active {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.35);
    transform: scale(1.04);
}

/* 标签按钮按 data-tag 着色（与添加批注保持一致 —— 区分明显的莫兰迪色） */
.tag-btn[data-tag="misunderstanding"] { background: #f5d8d8; color: #7a3030; border-color: #c47070; }
.tag-btn[data-tag="thinking"]         { background: #f5e8c4; color: #7a5e1e; border-color: #c89a1a; }
.tag-btn[data-tag="extension"]        { background: #d8e3ef; color: #1e4a7a; border-color: #1e4a7a; }
.tag-btn[data-tag="inspiration"]      { background: #d8ead8; color: #1a5c28; border-color: #1a5c28; }
.tag-btn[data-tag="misunderstanding"]:hover { background: #f0c8c8; }
.tag-btn[data-tag="thinking"]:hover        { background: #ecd9a8; }
.tag-btn[data-tag="extension"]:hover       { background: #c0d0e8; }
.tag-btn[data-tag="inspiration"]:hover     { background: #c0dcc0; }
.tag-btn[data-tag="misunderstanding"].active { background: #c47070; color: #fff; border-color: #8a3a3a; box-shadow: 0 0 0 2px rgba(196, 112, 112, 0.4); }
.tag-btn[data-tag="thinking"].active        { background: #c89a1a; color: #fff; border-color: #8a6a0a; box-shadow: 0 0 0 2px rgba(200, 154, 26, 0.4); }
.tag-btn[data-tag="extension"].active       { background: #1e4a7a; color: #fff; border-color: #0e2a5a; box-shadow: 0 0 0 2px rgba(30, 74, 122, 0.4); }
.tag-btn[data-tag="inspiration"].active     { background: #1a5c28; color: #fff; border-color: #0a3a16; box-shadow: 0 0 0 2px rgba(26, 92, 40, 0.4); }

.tag-icon {
    font-size: 1rem;
}

.tag-name {
    font-weight: 400;
    letter-spacing: 0;
    color: var(--text-primary);
}

/* 标签对应的高亮颜色 */
/* 交互文本高亮（与添加批注 modal 的 tag-btn 莫兰迪色统一 —— 区分明显的浅背景 + 深下划线） */
.highlight-misunderstanding {
    background-color: rgba(245, 216, 216, 0.55) !important;
    border-bottom: 2px solid #c47070;
}

.highlight-thinking {
    background-color: rgba(240, 226, 184, 0.55) !important;
    border-bottom: 2px solid #c4a55a;
}

.highlight-extension {
    background-color: rgba(204, 224, 237, 0.55) !important;
    border-bottom: 2px solid #6c93b8;
}

.highlight-inspiration {
    background-color: rgba(216, 234, 216, 0.55) !important;
    border-bottom: 2px solid #6fa572;
}

.highlight-question {
    background-color: rgba(220, 220, 220, 0.55) !important;
    border-bottom: 2px solid #888888;
}

.highlight-comment {
    background-color: rgba(220, 220, 220, 0.55) !important;
    border-bottom: 2px solid #888888;
}

/* 批注卡片标签显示 —— 与添加批注 modal 的 tag-btn 莫兰迪色统一，区分更明显 */
.annotation-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 9px;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    line-height: 1.4;
}

.annotation-tag.misunderstanding {
    background: #f5d8d8;
    color: #7a3030;
    border: 1px solid #c47070;
}

.annotation-tag.thinking {
    background: #f0e2b8;
    color: #6e5a30;
    border: 1px solid #c4a55a;
}

.annotation-tag.extension {
    background: #d8e3ef;
    color: #2c4a6e;
    border: 1px solid #6c93b8;
}

.annotation-tag.inspiration {
    background: #d8ead8;
    color: #2f5a30;
    border: 1px solid #6fa572;
}

/* 兼容历史标签 */
.annotation-tag.question {
    background: #d8e3ef;
    color: #2c4a6e;
    border: 1px solid #6c93b8;
}

.annotation-tag.comment {
    background: #d8ead8;
    color: #2f5a30;
    border: 1px solid #6fa572;
}

/* 兼容历史标签已并入上方 .question/.comment 块 */

/* 浮动批注卡片 - 选中文本时弹出 */
.floating-annotation-card {
    position: fixed;
    width: 340px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
    padding: 14px;
    z-index: 9999;
    display: none;
    animation: annotationCardFadeIn 0.18s ease-out;
}

@keyframes annotationCardFadeIn {
    from {
        opacity: 0;
        transform: translateY(-6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.annotation-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
    cursor: move;
    user-select: none;
}

.annotation-card-header:active {
    cursor: grabbing;
}

.annotation-card-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
}

.annotation-card-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.4rem;
    cursor: pointer;
    line-height: 1;
    padding: 0;
}

.annotation-card-close:hover {
    color: var(--text);
}

.annotation-card-preview {
    background: var(--bg-dark);
    padding: 8px 10px;
    border-radius: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
    border-left: 3px solid var(--primary);
    word-break: break-word;
    max-height: 60px;
    overflow-y: auto;
}

.annotation-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
}

.mini-tag-btn {
    display: inline-flex;
    align-items: center;
    padding: 5px 12px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 16px;
    font-size: 0.78rem;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text);
    font-weight: 400;
    letter-spacing: 0;
}

/* 莫兰迪色 - 实色柔和背景 + 深色文字，对比清晰 */
.mini-tag-btn[data-tag="misunderstanding"] {
    color: #6b3a3a;
    border-color: #b89696;
    background: #e8d5d5;
}
.mini-tag-btn[data-tag="thinking"] {
    color: #6b4a1a;
    border-color: #d9b878;
    background: #ecdfc0;
}
.mini-tag-btn[data-tag="extension"] {
    color: #3a5a6b;
    border-color: #96a8b8;
    background: #d5dde8;
}
.mini-tag-btn[data-tag="inspiration"] {
    color: #3f6b3a;
    border-color: #96b896;
    background: #d5e8d5;
}

.mini-tag-btn:hover {
    filter: brightness(0.95);
}

.mini-tag-btn.active {
    border-width: 2px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.mini-tag-btn[data-tag="misunderstanding"].active {
    background: #b89696;
    color: #3a1a1a;
    border-color: #8a6060;
}
.mini-tag-btn[data-tag="thinking"].active {
    background: #c89a1a;
    color: #fff;
    border-color: #8a6a0a;
}
.mini-tag-btn[data-tag="extension"].active {
    background: #96a8b8;
    color: #1a2f3a;
    border-color: #607888;
}
.mini-tag-btn[data-tag="inspiration"].active {
    background: #96b896;
    color: #1f3a1a;
    border-color: #608860;
}

.annotation-card-input textarea {
    width: 100%;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px;
    color: var(--text);
    font-size: 0.85rem;
    resize: vertical;
    min-height: 50px;
    font-family: inherit;
    box-sizing: border-box;
}

.annotation-card-input textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.annotation-card-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 10px;
}

.annotation-card-cancel,
.annotation-card-save {
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 0.85rem;
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

.annotation-card-cancel {
    background: var(--bg-dark);
    color: var(--text);
    border: 1px solid var(--border);
}

.annotation-card-cancel:hover {
    background: var(--bg-hover);
}

.annotation-card-save {
    background: var(--primary);
    color: white;
}

.annotation-card-save:hover {
    opacity: 0.85;
}

/* 已批注文本高亮 */
.annotated-text {
    transition: var(--transition);
    border-bottom: 1px dashed transparent;
}

.annotated-text:hover {
    border-bottom-color: var(--primary);
    filter: brightness(0.95);
}

/* 笔记卡片点击高亮闪烁 */
.note-card.highlight-flash {
    animation: noteFlash 0.6s ease-in-out 3;
    background: var(--bg-hover) !important;
}

@keyframes noteFlash {
    0%, 100% { box-shadow: 0 0 0 rgba(99, 102, 241, 0); }
    50% { box-shadow: 0 0 20px rgba(99, 102, 241, 0.6); }
}