/* ============================================
   MYAIGC 小说创作平台 - 文学创作氛围设计系统
   基于 Tailwind CSS 的自定义设计令牌和组件
   ============================================ */

/* ==================== 设计令牌 ==================== */
:root {
    /* 主色调 - 温暖的墨蓝色系 */
    --ink-50: #f0f4f8;
    --ink-100: #d9e2ec;
    --ink-200: #bcccdc;
    --ink-300: #9fb3c8;
    --ink-400: #829ab1;
    --ink-500: #627d98;
    --ink-600: #486581;
    --ink-700: #334e68;
    --ink-800: #243b53;
    --ink-900: #102a43;

    /* 强调色 - 琥珀金 */
    --amber-50: #fffbeb;
    --amber-100: #fef3c7;
    --amber-200: #fde68a;
    --amber-300: #fcd34d;
    --amber-400: #fbbf24;
    --amber-500: #f59e0b;
    --amber-600: #d97706;
    --amber-700: #b45309;

    /* 功能色 */
    --success-50: #f0fdf4;
    --success-500: #22c55e;
    --success-600: #16a34a;
    --success-700: #15803d;
    --warning-50: #fffbeb;
    --warning-500: #f59e0b;
    --warning-600: #d97706;
    --error-50: #fef2f2;
    --error-500: #ef4444;
    --error-600: #dc2626;
    --error-700: #b91c1c;
    --info-50: #eff6ff;
    --info-500: #3b82f6;
    --info-600: #2563eb;

    /* 中性色 - 温暖灰 */
    --warm-50: #faf9f7;
    --warm-100: #f5f3ef;
    --warm-200: #e8e4dd;
    --warm-300: #d4cfc5;
    --warm-400: #b8b0a2;
    --warm-500: #9c9485;
    --warm-600: #7d7568;
    --warm-700: #5e574e;
    --warm-800: #3d3832;
    --warm-900: #1c1917;

    /* 纸张色 */
    --paper: #fffcf5;
    --paper-warm: #faf6ee;
    --paper-cream: #f5f0e6;

    /* 排版 */
    --font-serif: 'Georgia', 'Noto Serif SC', 'Source Han Serif SC', serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    --text-hero: clamp(2.5rem, 5vw, 4rem);
    --text-h1: clamp(1.75rem, 3vw, 2.5rem);
    --text-h2: clamp(1.375rem, 2vw, 1.75rem);
    --text-h3: clamp(1.125rem, 1.5vw, 1.375rem);
    --text-body: 1rem;
    --text-small: 0.875rem;
    --text-caption: 0.75rem;

    --leading-tight: 1.25;
    --leading-normal: 1.6;
    --leading-relaxed: 1.8;

    /* 间距 */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    --space-5xl: 8rem;

    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    /* 阴影 - 温暖柔和 */
    --shadow-xs: 0 1px 2px rgba(28, 25, 23, 0.04);
    --shadow-sm: 0 1px 3px rgba(28, 25, 23, 0.06), 0 1px 2px rgba(28, 25, 23, 0.04);
    --shadow-md: 0 4px 6px rgba(28, 25, 23, 0.05), 0 2px 4px rgba(28, 25, 23, 0.04);
    --shadow-lg: 0 10px 15px rgba(28, 25, 23, 0.06), 0 4px 6px rgba(28, 25, 23, 0.04);
    --shadow-xl: 0 20px 25px rgba(28, 25, 23, 0.08), 0 8px 10px rgba(28, 25, 23, 0.04);
    --shadow-warm: 0 4px 12px rgba(180, 160, 120, 0.1);

    /* 动画 */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
    --duration-fast: 150ms;
    --duration-normal: 250ms;
    --duration-slow: 400ms;

    /* 导航栏 */
    --navbar-height: 56px;

    /* 侧边栏 */
    --sidebar-width: 260px;
}

/* ==================== 基础重置 ==================== */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-body);
    line-height: var(--leading-normal);
    color: var(--ink-800);
    background-color: var(--warm-50);
    margin: 0;
    padding: 0;
}

/* ==================== 排版系统 ==================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: 600;
    line-height: var(--leading-tight);
    color: var(--ink-900);
    margin: 0;
}

h1 { font-size: var(--text-h1); }
h2 { font-size: var(--text-h2); }
h3 { font-size: var(--text-h3); }

p {
    margin: 0;
    line-height: var(--leading-relaxed);
}

a {
    color: var(--ink-700);
    text-decoration: none;
    transition: color var(--duration-fast) ease;
}

a:hover {
    color: var(--amber-600);
}

/* ==================== 文学氛围组件 ==================== */

/* 纸张卡片 */
.paper-card {
    background: var(--paper);
    border: 1px solid var(--warm-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--duration-normal) var(--ease-out),
                transform var(--duration-normal) var(--ease-out);
}

.paper-card:hover {
    box-shadow: var(--shadow-md);
}

.paper-card-elevated {
    background: var(--paper);
    border: 1px solid var(--warm-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-warm);
}

/* 墨水按钮 */
.btn-ink {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-family: var(--font-sans);
    font-size: var(--text-small);
    font-weight: 500;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--duration-fast) ease;
    text-decoration: none;
    line-height: 1.5;
    white-space: nowrap;
}

.btn-ink-primary {
    background: var(--ink-800);
    color: #fff;
    border-color: var(--ink-800);
}

.btn-ink-primary:hover {
    background: var(--ink-900);
    border-color: var(--ink-900);
    color: #fff;
    box-shadow: var(--shadow-sm);
}

.btn-ink-secondary {
    background: transparent;
    color: var(--ink-700);
    border-color: var(--warm-300);
}

.btn-ink-secondary:hover {
    background: var(--warm-100);
    border-color: var(--warm-400);
    color: var(--ink-800);
}

.btn-ink-amber {
    background: var(--amber-500);
    color: #fff;
    border-color: var(--amber-500);
}

.btn-ink-amber:hover {
    background: var(--amber-600);
    border-color: var(--amber-600);
    color: #fff;
}

.btn-ink-ghost {
    background: transparent;
    color: var(--ink-600);
    border-color: transparent;
}

.btn-ink-ghost:hover {
    background: var(--warm-100);
    color: var(--ink-800);
}

.btn-ink-danger {
    background: transparent;
    color: var(--error-600);
    border-color: var(--error-500);
}

.btn-ink-danger:hover {
    background: var(--error-50);
    color: var(--error-700);
}

.btn-ink-sm {
    padding: 0.375rem 0.75rem;
    font-size: var(--text-caption);
}

.btn-ink-lg {
    padding: 0.75rem 1.75rem;
    font-size: var(--text-body);
}

.btn-ink:disabled,
.btn-ink[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* 墨水输入框 */
.input-ink {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-family: var(--font-sans);
    font-size: var(--text-body);
    color: var(--ink-800);
    background: #fff;
    border: 1px solid var(--warm-300);
    border-radius: var(--radius-md);
    outline: none;
    transition: border-color var(--duration-fast) ease,
                box-shadow var(--duration-fast) ease;
}

.input-ink::placeholder {
    color: var(--warm-400);
}

.input-ink:focus {
    border-color: var(--ink-400);
    box-shadow: 0 0 0 3px rgba(98, 125, 152, 0.1);
}

.input-ink-icon {
    position: relative;
}

.input-ink-icon .input-ink {
    padding-left: 2.5rem;
}

.input-ink-icon .icon-left {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--warm-400);
    font-size: 1rem;
    pointer-events: none;
    transition: color var(--duration-fast) ease;
}

.input-ink-icon:focus-within .icon-left {
    color: var(--ink-500);
}

/* 表单标签 */
.form-label-ink {
    display: block;
    font-size: var(--text-small);
    font-weight: 500;
    color: var(--ink-700);
    margin-bottom: 0.375rem;
}

.form-hint-ink {
    font-size: var(--text-caption);
    color: var(--warm-500);
    margin-top: 0.25rem;
}

.form-error-ink {
    font-size: var(--text-caption);
    color: var(--error-600);
    margin-top: 0.25rem;
}

/* 选择框 */
.select-ink {
    width: 100%;
    padding: 0.625rem 2rem 0.625rem 0.875rem;
    font-family: var(--font-sans);
    font-size: var(--text-body);
    color: var(--ink-800);
    background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23627d98' d='M6 8L1 3h10z'/%3E%3C/svg%3E") no-repeat right 0.75rem center;
    border: 1px solid var(--warm-300);
    border-radius: var(--radius-md);
    outline: none;
    appearance: none;
    cursor: pointer;
    transition: border-color var(--duration-fast) ease,
                box-shadow var(--duration-fast) ease;
}

.select-ink:focus {
    border-color: var(--ink-400);
    box-shadow: 0 0 0 3px rgba(98, 125, 152, 0.1);
}

/* 文本域 */
.textarea-ink {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-family: var(--font-sans);
    font-size: var(--text-body);
    color: var(--ink-800);
    background: #fff;
    border: 1px solid var(--warm-300);
    border-radius: var(--radius-md);
    outline: none;
    resize: vertical;
    min-height: 100px;
    transition: border-color var(--duration-fast) ease,
                box-shadow var(--duration-fast) ease;
}

.textarea-ink:focus {
    border-color: var(--ink-400);
    box-shadow: 0 0 0 3px rgba(98, 125, 152, 0.1);
}

/* 范围滑块 */
.range-ink {
    width: 100%;
    height: 6px;
    appearance: none;
    background: var(--warm-200);
    border-radius: var(--radius-full);
    outline: none;
    cursor: pointer;
}

.range-ink::-webkit-slider-thumb {
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--ink-700);
    border-radius: 50%;
    cursor: pointer;
    transition: transform var(--duration-fast) ease;
}

.range-ink::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

/* 徽章 */
.badge-ink {
    display: inline-flex;
    align-items: center;
    padding: 0.125rem 0.5rem;
    font-size: var(--text-caption);
    font-weight: 500;
    border-radius: var(--radius-full);
    line-height: 1.5;
}

.badge-ink-success {
    background: var(--success-50);
    color: var(--success-700);
}

.badge-ink-warning {
    background: var(--warning-50);
    color: var(--warning-600);
}

.badge-ink-error {
    background: var(--error-50);
    color: var(--error-700);
}

.badge-ink-info {
    background: var(--info-50);
    color: var(--info-600);
}

.badge-ink-neutral {
    background: var(--warm-100);
    color: var(--warm-700);
}

/* 分隔线 */
.divider-ink {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    color: var(--warm-400);
    font-size: var(--text-small);
}

.divider-ink::before,
.divider-ink::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--warm-200);
}

/* 导航栏 */
.navbar-ink {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    background: rgba(255, 252, 245, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--warm-200);
    z-index: 1000;
    display: flex;
    align-items: center;
    padding: 0 var(--space-xl);
    transition: box-shadow var(--duration-normal) ease;
}

.navbar-ink.scrolled {
    box-shadow: var(--shadow-sm);
}

.navbar-spacer {
    height: var(--navbar-height);
}

/* 导航链接 */
.nav-link-ink {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    font-size: var(--text-small);
    font-weight: 450;
    color: var(--ink-600);
    border-radius: var(--radius-md);
    transition: all var(--duration-fast) ease;
    cursor: pointer;
    text-decoration: none;
    border: none;
    background: none;
}

.nav-link-ink:hover {
    color: var(--ink-900);
    background: var(--warm-100);
}

.nav-link-ink.active {
    color: var(--ink-900);
    background: var(--warm-100);
    font-weight: 500;
}

/* 下拉菜单 */
.dropdown-ink {
    position: relative;
    display: inline-flex;
}

.dropdown-menu-ink {
    position: absolute;
    top: calc(100% + 4px);
    right: 0;
    min-width: 200px;
    background: var(--paper);
    border: 1px solid var(--warm-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 0.375rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-4px);
    transition: all var(--duration-fast) var(--ease-out);
    z-index: 1100;
}

.dropdown-menu-ink.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item-ink {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    font-size: var(--text-small);
    color: var(--ink-700);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--duration-fast) ease;
    text-decoration: none;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
}

.dropdown-item-ink:hover {
    background: var(--warm-100);
    color: var(--ink-900);
}

.dropdown-divider-ink {
    height: 1px;
    background: var(--warm-200);
    margin: 0.25rem 0;
}

/* 模态框 */
.modal-backdrop-ink {
    position: fixed;
    inset: 0;
    background: rgba(16, 42, 67, 0.4);
    backdrop-filter: blur(4px);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration-normal) ease;
}

.modal-backdrop-ink.open {
    opacity: 1;
    visibility: visible;
}

.modal-ink {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.95);
    background: var(--paper);
    border: 1px solid var(--warm-200);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    z-index: 2001;
    max-width: 90vw;
    max-height: 85vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration-normal) var(--ease-out);
}

.modal-ink.open {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

.modal-ink-lg {
    width: 800px;
}

.modal-ink-xl {
    width: 1000px;
}

.modal-header-ink {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg) var(--space-xl);
    border-bottom: 1px solid var(--warm-200);
}

.modal-header-ink h5 {
    font-family: var(--font-serif);
    font-size: var(--text-h3);
    font-weight: 600;
    color: var(--ink-900);
    margin: 0;
}

.modal-body-ink {
    padding: var(--space-xl);
    overflow-y: auto;
    flex: 1;
}

.modal-footer-ink {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-sm);
    padding: var(--space-lg) var(--space-xl);
    border-top: 1px solid var(--warm-200);
}

.modal-close-ink {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: none;
    background: none;
    color: var(--warm-500);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--duration-fast) ease;
    font-size: 1.25rem;
}

.modal-close-ink:hover {
    background: var(--warm-100);
    color: var(--ink-700);
}

/* Toast 通知 */
.toast-container-ink {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.toast-ink {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background: var(--ink-800);
    color: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    font-size: var(--text-small);
    max-width: 360px;
    opacity: 0;
    transform: translateY(8px);
    transition: all var(--duration-normal) var(--ease-out);
}

.toast-ink.show {
    opacity: 1;
    transform: translateY(0);
}

.toast-ink-success { background: var(--success-600); }
.toast-ink-error { background: var(--error-600); }
.toast-ink-warning { background: var(--warning-600); }

/* 进度条 */
.progress-ink {
    width: 100%;
    height: 6px;
    background: var(--warm-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar-ink {
    height: 100%;
    background: var(--ink-600);
    border-radius: var(--radius-full);
    transition: width var(--duration-slow) var(--ease-out);
}

.progress-bar-ink-striped {
    background-image: linear-gradient(
        45deg,
        rgba(255,255,255,0.15) 25%,
        transparent 25%,
        transparent 50%,
        rgba(255,255,255,0.15) 50%,
        rgba(255,255,255,0.15) 75%,
        transparent 75%,
        transparent
    );
    background-size: 1rem 1rem;
    animation: progress-stripes 1s linear infinite;
}

@keyframes progress-stripes {
    0% { background-position: 1rem 0; }
    100% { background-position: 0 0; }
}

/* 表格 */
.table-ink {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--text-small);
}

.table-ink th {
    text-align: left;
    padding: 0.75rem 1rem;
    font-weight: 500;
    color: var(--ink-600);
    border-bottom: 2px solid var(--warm-200);
    font-size: var(--text-caption);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table-ink td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--warm-200);
    color: var(--ink-700);
}

.table-ink tbody tr:hover {
    background: var(--warm-50);
}

/* 加载动画 */
.spinner-ink {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--warm-200);
    border-top-color: var(--ink-600);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.spinner-ink-lg {
    width: 32px;
    height: 32px;
    border-width: 3px;
}

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

/* 空状态 */
.empty-state-ink {
    text-align: center;
    padding: var(--space-4xl) var(--space-xl);
    color: var(--warm-500);
}

.empty-state-ink i {
    font-size: 3rem;
    margin-bottom: var(--space-lg);
    opacity: 0.4;
}

.empty-state-ink h3 {
    font-size: var(--text-h3);
    margin-bottom: var(--space-sm);
}

.empty-state-ink p {
    font-size: var(--text-small);
    max-width: 400px;
    margin: 0 auto;
}

/* 复选框 */
.checkbox-ink {
    width: 18px;
    height: 18px;
    appearance: none;
    border: 2px solid var(--warm-300);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--duration-fast) ease;
    position: relative;
}

.checkbox-ink:checked {
    background: var(--ink-700);
    border-color: var(--ink-700);
}

.checkbox-ink:checked::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 1px;
    width: 5px;
    height: 10px;
    border: solid #fff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* 切换开关 */
.switch-ink {
    position: relative;
    width: 44px;
    height: 24px;
    appearance: none;
    background: var(--warm-300);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: background var(--duration-fast) ease;
}

.switch-ink::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: #fff;
    border-radius: 50%;
    box-shadow: var(--shadow-xs);
    transition: transform var(--duration-fast) ease;
}

.switch-ink:checked {
    background: var(--ink-600);
}

.switch-ink:checked::after {
    transform: translateX(20px);
}

/* 标签页 */
.tabs-ink {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--warm-200);
}

.tab-ink {
    padding: 0.75rem 1.25rem;
    font-size: var(--text-small);
    font-weight: 500;
    color: var(--ink-500);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    cursor: pointer;
    transition: all var(--duration-fast) ease;
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
}

.tab-ink:hover {
    color: var(--ink-800);
}

.tab-ink.active {
    color: var(--ink-900);
    border-bottom-color: var(--ink-800);
}

/* 手风琴 */
.accordion-ink {
    border: 1px solid var(--warm-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.accordion-item-ink {
    border-bottom: 1px solid var(--warm-200);
}

.accordion-item-ink:last-child {
    border-bottom: none;
}

.accordion-header-ink {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.875rem 1rem;
    font-size: var(--text-small);
    font-weight: 500;
    color: var(--ink-700);
    cursor: pointer;
    transition: background var(--duration-fast) ease;
    background: none;
    border: none;
    width: 100%;
    text-align: left;
}

.accordion-header-ink:hover {
    background: var(--warm-50);
}

.accordion-header-ink .bi-chevron-down {
    transition: transform var(--duration-fast) ease;
    font-size: 0.75rem;
    color: var(--warm-500);
}

.accordion-item-ink.open .accordion-header-ink .bi-chevron-down {
    transform: rotate(180deg);
}

.accordion-body-ink {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--duration-normal) var(--ease-out);
}

.accordion-item-ink.open .accordion-body-ink {
    max-height: 500px;
}

.accordion-content-ink {
    padding: 0 1rem 1rem;
    font-size: var(--text-small);
    color: var(--ink-600);
    line-height: var(--leading-relaxed);
}

/* ==================== 动画 ==================== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
    animation: fadeIn var(--duration-normal) var(--ease-out) both;
}

.animate-fade-in-up {
    animation: fadeInUp var(--duration-slow) var(--ease-out) both;
}

.animate-slide-down {
    animation: slideDown var(--duration-normal) var(--ease-out) both;
}

/* ==================== 响应式工具 ==================== */
@media (max-width: 768px) {
    .navbar-ink {
        padding: 0 var(--space-md);
    }

    .modal-ink {
        width: 95vw;
        max-height: 90vh;
    }

    .modal-ink-lg,
    .modal-ink-xl {
        width: 95vw;
    }
}

/* ==================== 兼容层：Bootstrap class 映射 ==================== */
/* 这些类名被 JS 动态生成的 HTML 使用，需要保留样式 */

/* d-none / d-flex / d-block */
.d-none { display: none !important; }
.d-flex { display: flex !important; }
.d-block { display: block !important; }
.d-inline { display: inline !important; }
.d-inline-flex { display: inline-flex !important; }
.d-grid { display: grid !important; }

/* flex 工具 */
.flex-column { flex-direction: column !important; }
.flex-wrap { flex-wrap: wrap !important; }
.align-items-center { align-items: center !important; }
.align-items-start { align-items: flex-start !important; }
.justify-content-center { justify-content: center !important; }
.justify-content-between { justify-content: space-between !important; }
.justify-content-end { justify-content: flex-end !important; }
.gap-1 { gap: 0.25rem !important; }
.gap-2 { gap: 0.5rem !important; }
.gap-3 { gap: 1rem !important; }

/* 间距 */
.me-1 { margin-right: 0.25rem !important; }
.me-2 { margin-right: 0.5rem !important; }
.me-3 { margin-right: 1rem !important; }
.ms-1 { margin-left: 0.25rem !important; }
.ms-2 { margin-left: 0.5rem !important; }
.ms-3 { margin-left: 1rem !important; }
.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: 0.25rem !important; }
.mb-2 { margin-bottom: 0.5rem !important; }
.mb-3 { margin-bottom: 1rem !important; }
.mb-4 { margin-bottom: 1.5rem !important; }
.mt-1 { margin-top: 0.25rem !important; }
.mt-2 { margin-top: 0.5rem !important; }
.mt-3 { margin-top: 1rem !important; }
.mt-4 { margin-top: 1.5rem !important; }
.mt-auto { margin-top: auto !important; }
.mx-2 { margin-left: 0.5rem !important; margin-right: 0.5rem !important; }
.mx-3 { margin-left: 1rem !important; margin-right: 1rem !important; }
.my-2 { margin-top: 0.5rem !important; margin-bottom: 0.5rem !important; }
.my-3 { margin-top: 1rem !important; margin-bottom: 1rem !important; }
.p-0 { padding: 0 !important; }
.p-2 { padding: 0.5rem !important; }
.p-3 { padding: 1rem !important; }
.p-4 { padding: 1.5rem !important; }
.px-2 { padding-left: 0.5rem !important; padding-right: 0.5rem !important; }
.px-3 { padding-left: 1rem !important; padding-right: 1rem !important; }
.px-4 { padding-left: 1.5rem !important; padding-right: 1.5rem !important; }
.py-2 { padding-top: 0.5rem !important; padding-bottom: 0.5rem !important; }
.py-3 { padding-top: 1rem !important; padding-bottom: 1rem !important; }
.pt-3 { padding-top: 1rem !important; }
.pb-3 { padding-bottom: 1rem !important; }

/* 文字 */
.text-center { text-align: center !important; }
.text-start { text-align: left !important; }
.text-end { text-align: right !important; }
.text-muted { color: var(--warm-500) !important; }
.text-danger { color: var(--error-600) !important; }
.text-success { color: var(--success-600) !important; }
.text-primary { color: var(--ink-700) !important; }
.text-white { color: #fff !important; }
.text-small { font-size: var(--text-small) !important; }
.fw-bold { font-weight: 700 !important; }
.fw-semibold { font-weight: 600 !important; }
.fw-medium { font-weight: 500 !important; }
.fst-italic { font-style: italic !important; }
.text-decoration-none { text-decoration: none !important; }
.text-truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* 宽度 */
.w-100 { width: 100% !important; }

/* 圆角 */
.rounded { border-radius: var(--radius-md) !important; }
.rounded-pill { border-radius: var(--radius-full) !important; }

/* 背景 */
.bg-white { background-color: #fff !important; }
.bg-light { background-color: var(--warm-100) !important; }

/* 边框 */
.border { border: 1px solid var(--warm-200) !important; }
.border-bottom { border-bottom: 1px solid var(--warm-200) !important; }
.border-top { border-top: 1px solid var(--warm-200) !important; }
.border-0 { border: none !important; }

/* 位置 */
.position-relative { position: relative !important; }
.position-absolute { position: absolute !important; }
.position-fixed { position: fixed !important; }

/* 溢出 */
.overflow-hidden { overflow: hidden !important; }
.overflow-auto { overflow: auto !important; }
.overflow-y-auto { overflow-y: auto !important; }

/* 可见性 */
.visible { visibility: visible !important; }
.invisible { visibility: hidden !important; }

/* 光标 */
.cursor-pointer { cursor: pointer !important; }

/* 用户选择 */
.user-select-none { user-select: none !important; }

/* Bootstrap alert 兼容 */
.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    font-size: var(--text-small);
    margin-bottom: var(--space-md);
}

.alert-danger {
    background: var(--error-50);
    color: var(--error-700);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.alert-success {
    background: var(--success-50);
    color: var(--success-700);
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.alert-warning {
    background: var(--warning-50);
    color: var(--warning-600);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.alert-info {
    background: var(--info-50);
    color: var(--info-600);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

/* Bootstrap spinner 兼容 */
.spinner-border {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spin 0.75s linear infinite;
}

.spinner-border-sm {
    width: 0.75rem;
    height: 0.75rem;
    border-width: 2px;
}

/* Bootstrap badge 兼容 */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.2em 0.5em;
    font-size: var(--text-caption);
    font-weight: 500;
    border-radius: var(--radius-full);
    line-height: 1.5;
}

.bg-danger { background-color: var(--error-500) !important; color: #fff !important; }
.bg-success { background-color: var(--success-500) !important; color: #fff !important; }
.bg-warning { background-color: var(--warning-500) !important; color: #fff !important; }
.bg-primary { background-color: var(--ink-600) !important; color: #fff !important; }
.bg-info { background-color: var(--info-500) !important; color: #fff !important; }
.bg-secondary { background-color: var(--warm-400) !important; color: #fff !important; }

/* Bootstrap form-check 兼容 */
.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: var(--space-md);
}

.form-check-input {
    width: 18px;
    height: 18px;
    appearance: none;
    border: 2px solid var(--warm-300);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--duration-fast) ease;
    position: relative;
    flex-shrink: 0;
}

.form-check-input:checked {
    background: var(--ink-700);
    border-color: var(--ink-700);
}

.form-check-input:checked::after {
    content: '';
    position: absolute;
    left: 4px;
    top: 1px;
    width: 5px;
    height: 9px;
    border: solid #fff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.form-check-label {
    font-size: var(--text-small);
    color: var(--ink-700);
    cursor: pointer;
}

/* Bootstrap form-floating 兼容 */
.form-floating {
    position: relative;
    margin-bottom: var(--space-md);
}

.form-floating .form-control {
    height: 52px;
    padding-top: 1.5rem;
    padding-bottom: 0.375rem;
}

.form-floating label {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    padding: 1rem 0.875rem;
    pointer-events: none;
    font-size: var(--text-small);
    color: var(--warm-400);
    transition: all var(--duration-fast) ease;
}

.form-floating .form-control:focus ~ label,
.form-floating .form-control:not(:placeholder-shown) ~ label {
    transform: scale(0.85) translateY(-0.5rem);
    color: var(--ink-500);
}

/* form-control 兼容 */
.form-control {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-family: var(--font-sans);
    font-size: var(--text-body);
    color: var(--ink-800);
    background: #fff;
    border: 1px solid var(--warm-300);
    border-radius: var(--radius-md);
    outline: none;
    transition: border-color var(--duration-fast) ease,
                box-shadow var(--duration-fast) ease;
}

.form-control:focus {
    border-color: var(--ink-400);
    box-shadow: 0 0 0 3px rgba(98, 125, 152, 0.1);
}

.form-control::placeholder {
    color: var(--warm-400);
}

/* 响应式显示/隐藏 */
.d-none { display: none !important; }
.d-lg-none { display: none !important; }
.d-md-none { display: none !important; }
.d-md-inline { display: inline !important; }
.d-md-block { display: block !important; }
.d-lg-inline { display: inline !important; }
.d-lg-block { display: block !important; }
.d-lg-flex { display: flex !important; }

@media (max-width: 991px) {
    .d-lg-none { display: none !important; }
    .d-lg-inline { display: inline !important; }
    .d-lg-block { display: block !important; }
    .d-lg-flex { display: flex !important; }
    .d-none { display: none !important; }
    .d-md-none { display: none !important; }
}

@media (max-width: 767px) {
    .d-md-none { display: none !important; }
    .d-md-inline { display: inline !important; }
    .d-md-block { display: block !important; }
}

@media (min-width: 768px) {
    .d-md-none { display: none !important; }
    .d-md-inline { display: inline !important; }
    .d-md-block { display: block !important; }
    .d-none { display: none !important; }
    .d-lg-none { display: none !important; }
}

@media (min-width: 992px) {
    .d-lg-none { display: none !important; }
    .d-lg-inline { display: inline !important; }
    .d-lg-block { display: block !important; }
    .d-lg-flex { display: flex !important; }
    .d-none { display: none !important; }
    .d-md-none { display: none !important; }
}

/* 内容区域基础 */
.content-section {
    /* JS 通过 style.display 控制显示/隐藏 */
}

/* 容器 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--space-lg);
}

/* 行列系统 - 简化版 */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 calc(-0.5 * var(--space-lg));
}

.row > * {
    padding: 0 calc(0.5 * var(--space-lg));
}

.col-12 { width: 100%; }
.col-8 { width: 66.666%; }
.col-6 { width: 50%; }
.col-4 { width: 33.333%; }
.col-3 { width: 25%; }

@media (max-width: 991px) {
    .col-lg-12 { width: 100%; }
    .col-lg-8 { width: 100%; }
    .col-lg-6 { width: 100%; }
    .col-lg-4 { width: 100%; }
    .col-lg-3 { width: 50%; }
}

@media (min-width: 992px) {
    .col-lg-12 { width: 100%; }
    .col-lg-8 { width: 66.666%; }
    .col-lg-6 { width: 50%; }
    .col-lg-4 { width: 33.333%; }
    .col-lg-3 { width: 25%; }
}

@media (max-width: 767px) {
    .col-md-12 { width: 100%; }
    .col-md-8 { width: 100%; }
    .col-md-6 { width: 100%; }
    .col-md-4 { width: 100%; }
}

@media (min-width: 768px) {
    .col-md-12 { width: 100%; }
    .col-md-8 { width: 66.666%; }
    .col-md-6 { width: 50%; }
    .col-md-4 { width: 33.333%; }
}

/* 用户头像 */
.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--ink-700);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-small);
    font-weight: 600;
    flex-shrink: 0;
}

/* 汉堡菜单按钮 */
.navbar-toggler {
    display: none;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    background: none;
    cursor: pointer;
    color: var(--ink-700);
    font-size: 1.25rem;
    border-radius: var(--radius-md);
    transition: background var(--duration-fast) ease;
}

.navbar-toggler:hover {
    background: var(--warm-100);
}

@media (max-width: 991px) {
    .navbar-toggler {
        display: flex;
    }
}

/* 移动端导航折叠 */
.navbar-collapse {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

@media (max-width: 991px) {
    .navbar-collapse {
        display: none;
        position: absolute;
        top: var(--navbar-height);
        left: 0;
        right: 0;
        background: var(--paper);
        border-bottom: 1px solid var(--warm-200);
        box-shadow: var(--shadow-md);
        flex-direction: column;
        padding: var(--space-md);
        gap: var(--space-xs);
    }

    .navbar-collapse.open {
        display: flex;
    }
}

/* 页面 section 基础 */
.page-section {
    display: none;
}

.page-section.active {
    display: block;
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--warm-300);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--warm-400);
}

/* 选中文本颜色 */
::selection {
    background: rgba(98, 125, 152, 0.2);
    color: var(--ink-900);
}

/* ============================================
   JS 动态生成内容样式
   (app.js 中 renderPublicNovels / renderNovels 等使用)
   ============================================ */

/* 小说卡片网格 */
#publicNovelsList,
#novelsList {
    display: grid !important;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)) !important;
    gap: 1.25rem !important;
    margin-top: 1rem;
}

/* 小说卡片 */
.novel-card-magazine {
    position: relative;
    background: var(--paper);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xs);
    transition: all var(--duration-normal) var(--ease-out);
    cursor: pointer;
    border: 1px solid var(--warm-200);
    animation: fadeInUp 0.3s var(--ease-out) both;
    margin-bottom: 1.25rem;
}

.novel-card-magazine:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--warm-300);
}

/* 卡片顶部装饰条 - 隐藏渐变色块 */
.novel-card-magazine .card-decoration {
    display: none !important;
    height: 0 !important;
    min-height: 0 !important;
    overflow: hidden !important;
}

/* 卡片内容区 */
.novel-card-magazine .card-body {
    padding: 1.25rem;
    position: relative;
    z-index: 1;
}

/* 小说标题 */
.novel-card-magazine .novel-title {
    font-family: var(--font-serif);
    font-size: 1.0625rem;
    font-weight: 600;
    line-height: 1.5;
    color: var(--ink-900);
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 类型标签 - 覆盖 JS 内联渐变样式 */
.novel-card-magazine .novel-genre {
    display: inline-flex;
    align-items: center;
    padding: 0.1875rem 0.625rem;
    background: var(--ink-50) !important;
    color: var(--ink-700) !important;
    border-radius: var(--radius-sm);
    font-size: var(--text-caption);
    font-weight: 500;
    margin-bottom: 0.625rem;
    border: 1px solid var(--ink-100);
}

/* 统计信息 */
.novel-card-magazine .novel-stats {
    display: flex;
    gap: 1.25rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--warm-200);
    margin-top: 0.75rem;
}

.novel-card-magazine .stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.125rem;
}

.novel-card-magazine .stat-number {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--ink-900);
    font-family: var(--font-serif);
}

.novel-card-magazine .stat-label {
    font-size: 0.6875rem;
    color: var(--warm-500);
    letter-spacing: 0.03em;
}

/* 作者信息 */
.novel-card-magazine .author-section {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding-top: 0.75rem;
    margin-top: 0.75rem;
    border-top: 1px solid var(--warm-200);
}

.novel-card-magazine .author-avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--warm-100);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ink-600);
    font-weight: 600;
    font-size: 0.8125rem;
    border: 1px solid var(--warm-200);
    flex-shrink: 0;
}

.novel-card-magazine .author-name {
    font-size: var(--text-small);
    font-weight: 500;
    color: var(--ink-800);
}

.novel-card-magazine .publish-date {
    font-size: var(--text-caption);
    color: var(--warm-500);
}

/* 卡片内描述文字 */
.novel-card-magazine .card-body p {
    color: var(--ink-600);
    font-size: 0.875rem;
    line-height: 1.6;
    margin-bottom: 0.75rem;
}

/* 卡片内按钮 */
.novel-card-magazine .btn {
    font-size: var(--text-caption);
    padding: 0.25rem 0.625rem;
    border-radius: var(--radius-full);
    border: 1px solid var(--warm-300);
    background: var(--paper);
    color: var(--ink-600);
    cursor: pointer;
    transition: all var(--duration-fast) ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.novel-card-magazine .btn:hover {
    background: var(--warm-100);
    border-color: var(--warm-400);
}

.novel-card-magazine .btn-success {
    background: var(--success-50);
    border-color: var(--success-500);
    color: var(--success-700);
}

.novel-card-magazine .btn-warning {
    background: var(--amber-50);
    border-color: var(--amber-500);
    color: var(--amber-700);
}

.novel-card-magazine .btn-outline-success {
    background: transparent;
    border-color: var(--warm-300);
    color: var(--warm-600);
}

.novel-card-magazine .btn-outline-success:hover {
    background: var(--success-50);
    border-color: var(--success-500);
    color: var(--success-700);
}

.novel-card-magazine .btn-outline-warning {
    background: transparent;
    border-color: var(--warm-300);
    color: var(--warm-600);
}

.novel-card-magazine .btn-outline-warning:hover {
    background: var(--amber-50);
    border-color: var(--amber-500);
    color: var(--amber-700);
}

.novel-card-magazine .btn-outline-primary {
    background: transparent;
    border-color: var(--warm-300);
    color: var(--warm-600);
}

.novel-card-magazine .btn-outline-primary:hover {
    background: var(--ink-50);
    border-color: var(--ink-500);
    color: var(--ink-700);
}

.novel-card-magazine .btn-outline-secondary {
    background: transparent;
    border-color: var(--warm-300);
    color: var(--warm-600);
}

.novel-card-magazine .btn-outline-secondary:hover {
    background: var(--warm-100);
    border-color: var(--warm-400);
}

/* 生成小说和配置 section 布局 */
#generateSection,
#configSection {
    max-width: 1120px;
    margin: 0 auto;
    padding: 1.5rem 1.5rem;
}

#generateSection .row,
#configSection .row {
    display: grid;
    grid-template-columns: 1.4fr 0.6fr;
    gap: 1.5rem;
    align-items: start;
}

#generateSection .col-md-8,
#configSection .col-md-8 {
    grid-column: 1;
}

#generateSection .col-md-4,
#configSection .col-md-4 {
    grid-column: 2;
    position: sticky;
    top: calc(var(--navbar-height) + 1.5rem);
}

/* 卡片组件（JS 动态生成使用） */
.card {
    background: var(--paper);
    border: 1px solid var(--warm-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xs);
    overflow: hidden;
    transition: box-shadow var(--duration-normal) var(--ease-out);
}

.card:hover {
    box-shadow: var(--shadow-sm);
}

.card-header {
    background: transparent;
    border-bottom: 1px solid var(--warm-200);
    padding: 1rem 1.25rem;
}

.card-header h5,
.card-header h6 {
    font-family: var(--font-serif);
    font-weight: 600;
    color: var(--ink-800);
    margin: 0;
}

.card-body {
    padding: 1.25rem;
}

/* 加载状态居中 */
#publicNovelsList .text-center,
#novelsList .text-center {
    grid-column: 1 / -1;
    padding: 3rem 2rem;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--warm-500);
}

.empty-state i {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
    opacity: 0.3;
}

.empty-state p {
    font-size: var(--text-small);
    margin-bottom: 1rem;
}

/* 响应式 */
@media (max-width: 992px) {
    #generateSection .row,
    #configSection .row {
        grid-template-columns: 1fr;
    }

    #generateSection .col-md-4,
    #configSection .col-md-4 {
        position: static;
    }
}

@media (max-width: 768px) {
    #publicNovelsList,
    #novelsList {
        grid-template-columns: 1fr;
    }

    #generateSection,
    #configSection {
        padding: 1rem;
    }
}

/* 首页英雄区 - 移除旧渐变装饰条 */
.hero-literary::after {
    display: none !important;
}

.hero-literary::before {
    display: none !important;
}

/* 小说详情页布局 */
#novelDetailSection {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem;
}

/* 生成进度区域 */
#generationProgress {
    min-height: 200px;
}

/* Toast 组件兼容 */
.toast {
    background: var(--ink-800);
    color: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    min-width: 280px;
}

.toast-header {
    background: transparent;
    color: rgba(255,255,255,0.9);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding: 0.75rem 1rem;
    font-size: var(--text-small);
    font-weight: 500;
}

.toast-body {
    padding: 0.75rem 1rem;
    font-size: var(--text-small);
    color: rgba(255,255,255,0.85);
}

.toast .btn-close {
    filter: brightness(0) invert(1);
    opacity: 0.6;
}

/* Modal 兼容 */
.modal.fade .modal-dialog {
    transition: none;
}

.modal.show .modal-dialog {
    transform: none;
}

.modal-content {
    background: var(--paper);
    border: 1px solid var(--warm-200);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

.modal-header {
    background: transparent;
    border-bottom: 1px solid var(--warm-200);
    padding: 1rem 1.25rem;
}

.modal-header .modal-title {
    font-family: var(--font-serif);
    font-weight: 600;
    color: var(--ink-900);
}

.modal-body {
    padding: 1.25rem;
}

.modal-footer {
    border-top: 1px solid var(--warm-200);
    padding: 0.75rem 1.25rem;
}

/* btn-close 兼容 */
.btn-close {
    background: none;
    border: none;
    opacity: 0.5;
    cursor: pointer;
    padding: 0.25rem;
}

.btn-close:hover {
    opacity: 0.8;
}

/* visurally-hidden 兼容 */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ============================================
   Bootstrap JS 动态生成内容兼容层
   (app.js 中 renderNovels / renderPublicNovels 等使用)
   ============================================ */

/* 下拉菜单 */
.dropdown-menu {
    position: absolute;
    top: calc(100% + 4px);
    right: 0;
    min-width: 180px;
    background: var(--paper);
    border: 1px solid var(--warm-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 0.375rem;
    z-index: 1100;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-4px);
    transition: all 150ms cubic-bezier(0.16, 1, 0.3, 1);
}

.dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu-end {
    right: 0;
    left: auto;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    font-size: var(--text-small);
    color: var(--ink-700);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 150ms ease;
    text-decoration: none;
    border: none;
    background: none;
    width: 100%;
}

.dropdown-item:hover {
    background: var(--warm-100);
    color: var(--ink-900);
}

.dropdown-divider {
    height: 1px;
    background: var(--warm-200);
    margin: 0.25rem 0;
}

.dropdown-toggle::after {
    display: none;
}

/* 按钮组 */
.btn-group {
    display: inline-flex;
    position: relative;
}

/* 按钮尺寸 */
.btn-sm {
    padding: 0.25rem 0.625rem;
    font-size: var(--text-caption);
}

/* 文字颜色 */
.text-danger {
    color: var(--error-600) !important;
}

.text-warning {
    color: var(--warning-600) !important;
}

.text-success {
    color: var(--success-600) !important;
}

/* badge 颜色变体（JS 内联 style 已处理大部分，这里补充 class 方式） */
.badge.bg-primary {
    background: var(--ink-50) !important;
    color: var(--ink-700) !important;
    border: 1px solid var(--ink-100);
}

.badge.bg-secondary {
    background: var(--warm-100) !important;
    color: var(--warm-700) !important;
    border: 1px solid var(--warm-200);
}

.badge.bg-success {
    background: var(--success-50) !important;
    color: var(--success-700) !important;
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.badge.bg-danger {
    background: var(--error-50) !important;
    color: var(--error-700) !important;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.badge.bg-warning {
    background: var(--warning-50) !important;
    color: var(--warning-600) !important;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.badge.bg-info {
    background: var(--info-50) !important;
    color: var(--info-600) !important;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

/* 进度条（JS 动态生成） */
.progress {
    height: 6px;
    background: var(--warm-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--ink-600);
    border-radius: var(--radius-full);
    transition: width 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

.progress-bar-striped {
    background-image: linear-gradient(
        45deg,
        rgba(255,255,255,0.15) 25%,
        transparent 25%,
        transparent 50%,
        rgba(255,255,255,0.15) 50%,
        rgba(255,255,255,0.15) 75%,
        transparent 75%,
        transparent
    );
    background-size: 1rem 1rem;
    animation: progress-stripes 1s linear infinite;
}

.progress-bar-animated {
    animation: progress-stripes 1s linear infinite;
}

/* 列表组 */
.list-group {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.list-group-item {
    padding: 0.75rem 1rem;
    border: 1px solid var(--warm-200);
    background: var(--paper);
    font-size: var(--text-small);
    color: var(--ink-700);
}

.list-group-item:first-child {
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.list-group-item:last-child {
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.list-group-item + .list-group-item {
    border-top: none;
}

.list-group-item:hover {
    background: var(--warm-50);
}

/* Accordion（JS 动态生成） */
.accordion {
    border: 1px solid var(--warm-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.accordion-item {
    border-bottom: 1px solid var(--warm-200);
}

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

.accordion-button {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: var(--text-small);
    font-weight: 500;
    color: var(--ink-700);
    background: none;
    border: none;
    cursor: pointer;
    transition: background 150ms ease;
}

.accordion-button:hover {
    background: var(--warm-50);
}

.accordion-button:not(.collapsed) {
    color: var(--ink-900);
    background: var(--warm-50);
    box-shadow: none;
}

.accordion-button::after {
    content: '';
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--warm-400);
    border-bottom: 2px solid var(--warm-400);
    transform: rotate(-45deg);
    transition: transform 150ms ease;
    flex-shrink: 0;
    margin-left: auto;
}

.accordion-button:not(.collapsed)::after {
    transform: rotate(45deg);
}

.accordion-collapse {
    transition: height 250ms ease;
}

.accordion-body {
    padding: 0 1rem 1rem;
    font-size: var(--text-small);
    color: var(--ink-600);
    line-height: var(--leading-relaxed);
}

/* Nav tabs（JS 动态生成） */
.nav-tabs {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--warm-200);
}

.nav-tabs .nav-link {
    padding: 0.75rem 1.25rem;
    font-size: var(--text-small);
    font-weight: 500;
    color: var(--ink-500);
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    cursor: pointer;
    transition: all 150ms ease;
    background: none;
    text-decoration: none;
}

.nav-tabs .nav-link:hover {
    color: var(--ink-800);
    border-bottom-color: var(--warm-300);
}

.nav-tabs .nav-link.active {
    color: var(--ink-900);
    border-bottom-color: var(--ink-800);
    background: none;
}

/* Tab pane */
.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

/* 章节列表项（小说详情页 JS 生成） */
.chapter-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--warm-200);
    transition: background 150ms ease;
    cursor: pointer;
}

.chapter-item:hover {
    background: var(--warm-50);
}

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

/* 人物/情节卡片 */
.character-card,
.plot-thread-card {
    padding: 1rem;
    border: 1px solid var(--warm-200);
    border-radius: var(--radius-md);
    background: var(--paper);
    margin-bottom: 0.75rem;
    transition: all 200ms ease;
}

.character-card:hover,
.plot-thread-card:hover {
    border-color: var(--warm-300);
    box-shadow: var(--shadow-xs);
}