/* ===== 全局变量与重置 ===== */
:root {
    --color-bg: #faf9f8;
    --color-card: #ffffff;
    --color-text: #2c3e2f;
    --color-text-muted: #5b6e5c;
    --color-border: #e8e6e3;
    --color-primary: #007acc;
    --color-primary-dark: #005fa3;
    --color-danger-bg: #fee2e2;
    --color-danger: #b91c1c;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #1a1a1a;
        --color-card: #2d2d2d;
        --color-text: #e5e5e5;
        --color-text-muted: #b0b0b0;
        --color-border: #404040;
        --color-danger-bg: #4a1e1e;
        --color-danger: #fecaca;
    }
}

/* ===== 基础布局 ===== */
.rc-my-collections,
.rc-collection-single,
.rc-edit-collection,
.rc-mycollections-layout,
.rc-manage-collection {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
}

/* ===== 通用按钮 ===== */
.rc-button {
    display: inline-block;
    padding: 0.5rem 1.2rem;
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
    background: #f0f0f0;
    color: var(--color-text);
}
.rc-button.small {
    padding: 0.25rem 0.8rem;
    font-size: 0.8rem;
}
.rc-button:hover {
    background: #e0e0e0;
    transform: translateY(-1px);
}
.rc-button.primary {
    background: var(--color-primary);
    color: white;
}
.rc-button.primary:hover {
    background: var(--color-primary-dark);
}

/* 删除按钮通用 */
.rc-delete,
.rc-remove-link {
    background: var(--color-danger-bg);
    border: none;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    color: var(--color-danger);
    cursor: pointer;
    font-size: 0.8rem;
    transition: background 0.2s;
}
.rc-delete:hover,
.rc-remove-link:hover {
    background: #fecaca;
}
.rc-delete.small {
    padding: 0.2rem 0.6rem;
    font-size: 0.7rem;
}

/* ===== 表单通用 ===== */
.rc-field {
    margin-bottom: 1.25rem;
}
.rc-field label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}
.rc-field input[type="text"],
.rc-field input[type="url"],
.rc-field textarea,
.rc-field select {
    width: 100%;
    padding: 0.6rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    transition: border 0.2s;
    background: var(--color-card);
    color: var(--color-text);
}
.rc-field input:focus,
.rc-field textarea:focus,
.rc-field select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 122, 204, 0.1);
}

/* ===== 我的文集页面（左右栏） ===== */
.rc-mycollections-layout {
    display: flex;
    gap: 2rem;
}
.rc-mycollections-menu {
    flex: 0 0 280px;
    background: var(--color-card);
    border-radius: var(--radius-lg);
    padding: 1rem 0;
    box-shadow: var(--shadow-sm);
}
.rc-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1rem 1rem;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 0.5rem;
}
.rc-menu-header h3 {
    margin: 0;
    font-size: 1.2rem;
}
.rc-mycollections-menu ul {
    list-style: none;
    margin: 0;
    padding: 0;
}
.rc-mycollections-menu li a {
    display: block;
    padding: 0.6rem 1rem;
    text-decoration: none;
    color: var(--color-text);
    transition: all 0.2s;
    border-left: 3px solid transparent;
}
.rc-mycollections-menu li a:hover {
    background: #f0f0f0;
    color: var(--color-primary);
}
.rc-mycollections-menu li.active a {
    background: rgba(0, 122, 204, 0.08);
    border-left-color: var(--color-primary);
    color: var(--color-primary);
}
.rc-mycollections-content {
    flex: 1;
    min-width: 0;
}

/* 右侧列表模式（文集内容） */
.rc-collection-listmode {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.rc-listmode-header {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-wrap: wrap;
}
.rc-listmode-cover img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
}
.rc-listmode-info {
    flex: 1;
}
.rc-listmode-info h2 {
    margin: 0 0 0.5rem;
    font-size: 1.4rem;
}
.rc-listmode-desc {
    margin-bottom: 0.75rem;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}
.rc-listmode-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.rc-listmode-content {
    padding: 1.5rem;
}
.rc-volume-block {
    margin-bottom: 2rem;
}
.rc-volume-block:last-child {
    margin-bottom: 0;
}
.rc-volume-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-border);
}
.rc-volume-title h3 {
    margin: 0;
    font-size: 1.2rem;
}
.rc-article-listmode {
    list-style: none;
    padding: 0;
    margin: 0;
}
.rc-article-listmode li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 0;
    border-bottom: 1px solid #f0f0f0;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.rc-article-listmode li:last-child {
    border-bottom: none;
}
.article-title {
    font-weight: 500;
    flex: 2;
}
.article-date {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    font-family: monospace;
}

/* 右侧预览卡片（旧版保留，新版未使用） */
.rc-collection-preview {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
}
.rc-preview-cover {
    text-align: center;
    margin-bottom: 1.5rem;
}
.rc-preview-cover img {
    max-width: 120px;
    max-height: 120px;
    object-fit: cover;
    border-radius: var(--radius-sm);
}
.rc-collection-preview h2 {
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: 1.8rem;
}
.rc-preview-description {
    margin-bottom: 1rem;
    line-height: 1.6;
    color: var(--color-text-muted);
}
.rc-preview-stats {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    padding: 0.75rem 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    font-size: 0.9rem;
}
.rc-preview-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}
.rc-placeholder {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    padding: 3rem;
    text-align: center;
    color: var(--color-text-muted);
}

/* ===== 编辑文集表单 ===== */
.rc-edit-collection {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
}
.rc-edit-collection h2 {
    font-size: 1.5rem;
    margin-top: 0;
    margin-bottom: 1.5rem;
}
.rc-cover-preview img {
    max-width: 120px;
    max-height: 120px;
    object-fit: cover;
    border-radius: var(--radius-sm);
}
#rc-links-list {
    list-style: none;
    padding: 0;
    margin-bottom: 1rem;
}
#rc-links-list li {
    background: var(--color-bg);
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    border-radius: var(--radius-sm);
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
}
#rc-links-list li input {
    flex: 1;
    min-width: 150px;
}

/* ===== 管理页面（左侧菜单+右侧内容） ===== */
.rc-manage-collection {
    max-width: 1200px;
}
.rc-manage-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--color-border);
}
.rc-manage-header h2 {
    margin: 0;
    font-size: 1.5rem;
}
.rc-manage-links {
    display: flex;
    gap: 1rem;
}
.rc-manage-layout {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}
.rc-manage-menu {
    flex: 0 0 200px;
    background: var(--color-card);
    border-radius: var(--radius-lg);
    padding: 1rem 0;
    box-shadow: var(--shadow-sm);
}
.rc-manage-menu ul {
    list-style: none;
    margin: 0;
    padding: 0;
}
.rc-manage-menu li a {
    display: block;
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    color: var(--color-text);
    font-weight: 500;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}
.rc-manage-menu li a:hover {
    background: #f0f0f0;
    color: var(--color-primary);
}
.rc-manage-menu li.active a {
    background: rgba(0, 122, 204, 0.08);
    border-left-color: var(--color-primary);
    color: var(--color-primary);
}
.rc-manage-content {
    flex: 1;
    min-width: 300px;
}
.rc-card {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}
.rc-card h3 {
    margin-top: 0;
    margin-bottom: 1.25rem;
    font-size: 1.25rem;
}

/* 管理页面内现有内容列表 */
.rc-volume-manage {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--color-border);
}
.rc-volume-manage:last-child {
    border-bottom: none;
}
.rc-volume-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 0.75rem;
}
.rc-volume-header h4 {
    margin: 0;
    font-size: 1.1rem;
}
.rc-article-list-manage {
    list-style: none;
    padding: 0;
    margin: 0;
}
.rc-article-list-manage li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid #f0f0f0;
}
.rc-article-list-manage li:last-child {
    border-bottom: none;
}
.rc-empty {
    text-align: center;
    color: var(--color-text-muted);
    padding: 2rem;
    font-style: italic;
}

/* ===== 单文集详情页 ===== */
.rc-collection-single .rc-header {
    text-align: center;
    margin-bottom: 2rem;
}
.rc-collection-single .rc-cover {
    margin-bottom: 1.5rem;
}
.rc-collection-single .rc-cover img {
    max-width: 200px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}
.rc-collection-single h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #1e1e1e 0%, #2c3e50 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.rc-description {
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
}
.rc-content {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin: 2rem 0;
}
.rc-volume {
    margin-bottom: 2rem;
}
.rc-volume h2 {
    font-size: 1.5rem;
    border-left: 4px solid var(--color-primary);
    padding-left: 1rem;
    margin-bottom: 1rem;
}
.rc-article-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.rc-article-list li {
    border-bottom: 1px solid var(--color-border);
    transition: background 0.2s;
}
.rc-article-list li:hover {
    background: rgba(0, 122, 204, 0.05);
}
.rc-article-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.9rem 1rem;
    text-decoration: none;
    color: var(--color-text);
}
.rc-article-link:hover {
    color: var(--color-primary);
}
.rc-article-title {
    font-weight: 500;
}
.rc-article-date {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    font-family: monospace;
}
.rc-links {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
}
.rc-links h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}
.rc-links-list {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    list-style: none;
    padding: 0;
}
.rc-links-list a {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: var(--color-bg);
    border-radius: 20px;
    text-decoration: none;
    color: var(--color-primary);
    font-size: 0.85rem;
    transition: all 0.2s;
}
.rc-links-list a:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-2px);
}

/* ===== 编辑器按钮样式（解决蓝色背景） ===== */
.mce-toolbar .mce-btn button,
.qt-dfw button,
.wp-editor-tabs button,
.mce-toolbar .mce-btn-group .mce-btn {
    background: transparent !important;
    border-color: var(--color-border) !important;
}
.mce-toolbar .mce-btn:hover,
.mce-toolbar .mce-btn:active,
.mce-toolbar .mce-btn.mce-active {
    background: #f0f0f0 !important;
}
.mce-toolbar .mce-btn button i,
.mce-toolbar .mce-btn button span {
    color: var(--color-text) !important;
}
@media (prefers-color-scheme: dark) {
    .mce-toolbar .mce-btn:hover {
        background: #4a5568 !important;
    }
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .rc-mycollections-layout,
    .rc-manage-layout {
        flex-direction: column;
    }
    .rc-mycollections-menu,
    .rc-manage-menu {
        flex: auto;
    }
    .rc-mycollections-menu ul,
    .rc-manage-menu ul {
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
        padding: 0.5rem;
    }
    .rc-mycollections-menu li a,
    .rc-manage-menu li a {
        padding: 0.4rem 1rem;
        border-left: none;
        border-radius: 20px;
    }
    .rc-mycollections-menu li.active a,
    .rc-manage-menu li.active a {
        border-left-color: transparent;
        background: var(--color-primary);
        color: white;
    }
    .rc-listmode-header {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    .rc-article-listmode li,
    .rc-article-list li .rc-article-link {
        flex-direction: column;
        align-items: flex-start;
    }
    .rc-volume-title {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    .rc-content {
        padding: 1rem;
    }
    .rc-edit-collection {
        padding: 1rem;
    }
    #rc-links-list li {
        flex-direction: column;
        align-items: stretch;
    }
}

/* ===== 暗色模式补充 ===== */
@media (prefers-color-scheme: dark) {
    .rc-mycollections-menu li a:hover,
    .rc-manage-menu li a:hover {
        background: #404040;
    }
    .rc-article-list li:hover {
        background: rgba(0, 122, 204, 0.1);
    }
    .rc-article-listmode li,
    .rc-article-list-manage li {
        border-bottom-color: #404040;
    }
    .rc-collection-single h1 {
        background: linear-gradient(135deg, #f0f0f0 0%, #90cdf4 100%);
        background-clip: text;
        -webkit-background-clip: text;
    }
}

/* ===== 单文集详情页重新设计 ===== */
.rc-collection-single {
    max-width: 900px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

/* 头部 Hero 区域 */
.rc-collection-hero {
    display: flex;
    gap: 2.5rem;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--color-border);
    flex-wrap: wrap;
}
.rc-collection-cover {
    flex-shrink: 0;
}
.rc-collection-cover img {
    width: 180px;
    height: 180px;
    object-fit: cover;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}
.rc-collection-meta {
    flex: 1;
}
.rc-collection-meta h1 {
    font-size: 2rem;
    margin: 0 0 0.75rem;
    font-weight: 600;
    background: linear-gradient(135deg, #2c3e2f 0%, #1a3a3a 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
@media (prefers-color-scheme: dark) {
    .rc-collection-meta h1 {
        background: linear-gradient(135deg, #e5e5e5 0%, #90cdf4 100%);
        background-clip: text;
        -webkit-background-clip: text;
    }
}
.rc-collection-stats {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}
.rc-collection-desc {
    line-height: 1.7;
    color: var(--color-text);
    margin-bottom: 1.25rem;
}
.rc-collection-admin {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
}

/* 内容区域 */
.rc-collection-content {
    margin-bottom: 3rem;
}
.rc-volumes-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}
.rc-volume-card {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.2s;
}
.rc-volume-card:hover {
    box-shadow: var(--shadow-md);
}
.rc-volume-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--color-primary);
}
.rc-volume-header h2 {
    margin: 0;
    font-size: 1.4rem;
    font-weight: 600;
}
.rc-volume-count {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    background: var(--color-bg);
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
}
.rc-article-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.rc-article-list li {
    border-bottom: 1px solid var(--color-border);
}
.rc-article-list li:last-child {
    border-bottom: none;
}
.rc-article-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 0;
    text-decoration: none;
    color: var(--color-text);
    transition: all 0.2s;
}
.rc-article-link:hover {
    color: var(--color-primary);
    padding-left: 0.5rem;
}
.rc-article-title {
    font-weight: 500;
}
.rc-article-date {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    font-family: monospace;
}

/* 独立文章区域 */
.rc-standalone-section {
    margin-top: 2rem;
    background: var(--color-card);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}
.rc-standalone-section h2 {
    margin: 0 0 1rem;
    font-size: 1.3rem;
    font-weight: 600;
    border-left: 3px solid var(--color-primary);
    padding-left: 0.75rem;
}

/* 空状态 */
.rc-empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--color-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}
.rc-empty-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.6;
}
.rc-empty-state h3 {
    margin: 0 0 0.5rem;
    font-size: 1.4rem;
}
.rc-empty-state p {
    margin-bottom: 1rem;
    color: var(--color-text-muted);
}

/* 友情链接区域 */
.rc-collection-links {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
}
.rc-collection-links h3 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    font-weight: 500;
}
.rc-links-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}
.rc-link-item {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: var(--color-bg);
    border-radius: 30px;
    text-decoration: none;
    color: var(--color-primary);
    font-size: 0.85rem;
    transition: all 0.2s;
}
.rc-link-item:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-2px);
}

/* 响应式 */
@media (max-width: 768px) {
    .rc-collection-single {
        padding: 0 1rem;
    }
    .rc-collection-hero {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 1rem;
    }
    .rc-collection-cover img {
        width: 140px;
        height: 140px;
    }
    .rc-collection-stats {
        justify-content: center;
    }
    .rc-article-link {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.2rem;
    }
    .rc-volume-header {
        flex-direction: column;
        gap: 0.5rem;
    }
    .rc-collection-admin {
        justify-content: center;
    }
}

/* ===== 单文章阅读页面样式 ===== */
.rc-single-article {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}
.rc-article-header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--color-border);
}
.rc-article-header h1 {
    font-size: 2rem;
    margin: 0 0 0.75rem;
    font-weight: 700;
    background: linear-gradient(135deg, #2c3e2f 0%, #1a3a3a 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
@media (prefers-color-scheme: dark) {
    .rc-article-header h1 {
        background: linear-gradient(135deg, #e5e5e5 0%, #90cdf4 100%);
        background-clip: text;
        -webkit-background-clip: text;
    }
}
.rc-article-meta {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}
.rc-article-meta a {
    color: var(--color-primary);
    text-decoration: none;
}
.rc-article-meta a:hover {
    text-decoration: underline;
}
.rc-article-content {
    line-height: 1.8;
    font-size: 1.05rem;
    color: var(--color-text);
}
.rc-article-content p {
    margin-bottom: 1.2rem;
}
.rc-article-content h2,
.rc-article-content h3 {
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}
.rc-article-footer {
    margin-top: 3rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
    text-align: center;
}
.rc-error {
    text-align: center;
    padding: 3rem;
    color: var(--color-danger);
}