/* ============================================
   水墨博客后台管理样式
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;700&family=Ma+Shan+Zheng&display=swap');

:root {
    --ink-black: #1a1a1a;
    --ink-dark: #2d2d2d;
    --ink-gray: #666;
    --ink-light: #999;
    --ink-faded: #d4cfc8;
    --ink-bg: #f5f2ed;
    --ink-paper: #faf8f5;
    --ink-white: #fefcf9;
    --ink-accent: #c0392b;
    --ink-seal: #8b0000;
    --sidebar-width: 240px;
}

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

body {
    font-family: 'Noto Serif SC', 'SimSun', 'STSong', serif;
    background: var(--ink-bg);
    color: var(--ink-dark);
    line-height: 1.6;
    font-size: 14px;
}

/* ===== 登录页面 ===== */
.login-page {
    display: flex;
    min-height: 100vh;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--ink-bg) 0%, #e8e3dc 100%);
}

.login-box {
    background: var(--ink-paper);
    padding: 50px 45px;
    border-radius: 4px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.06);
    width: 380px;
    max-width: 90%;
}

.login-box h1 {
    font-family: 'Ma Shan Zheng', cursive;
    text-align: center;
    font-size: 2.2em;
    font-weight: 400;
    letter-spacing: 6px;
    margin-bottom: 8px;
    color: var(--ink-black);
}

.login-box .subtitle {
    text-align: center;
    color: var(--ink-light);
    font-size: 0.85em;
    letter-spacing: 4px;
    margin-bottom: 35px;
}

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

.form-group label {
    display: block;
    font-size: 0.85em;
    color: var(--ink-gray);
    margin-bottom: 6px;
    letter-spacing: 1px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--ink-faded);
    background: var(--ink-white);
    border-radius: 3px;
    font-family: 'Noto Serif SC', serif;
    font-size: 0.95em;
    color: var(--ink-dark);
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--ink-light);
}

.btn {
    display: inline-block;
    padding: 10px 24px;
    background: var(--ink-black);
    color: var(--ink-paper);
    border: none;
    border-radius: 3px;
    font-family: 'Noto Serif SC', serif;
    font-size: 0.95em;
    letter-spacing: 2px;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
}

.btn:hover {
    background: #333;
}

.btn-sm {
    padding: 6px 14px;
    font-size: 0.85em;
}

.btn-danger {
    background: var(--ink-accent);
}

.btn-danger:hover {
    background: #a93226;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--ink-faded);
    color: var(--ink-gray);
}

.btn-outline:hover {
    border-color: var(--ink-black);
    color: var(--ink-black);
    background: transparent;
}

.btn-block {
    width: 100%;
}

.error-msg {
    background: #fdf0ef;
    border: 1px solid #f5c6cb;
    color: var(--ink-accent);
    padding: 10px 15px;
    border-radius: 3px;
    margin-bottom: 20px;
    font-size: 0.9em;
}

/* ===== 后台布局 ===== */
.admin-wrapper {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    width: var(--sidebar-width);
    background: var(--ink-black);
    color: var(--ink-paper);
    padding: 30px 0;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    overflow-y: auto;
}

.admin-sidebar .brand {
    font-family: 'Ma Shan Zheng', cursive;
    font-size: 1.6em;
    text-align: center;
    letter-spacing: 6px;
    padding: 0 20px 25px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    margin-bottom: 20px;
}

.admin-nav {
    list-style: none;
}

.admin-nav li {
    border-left: 3px solid transparent;
    transition: all 0.3s;
}

.admin-nav li:hover,
.admin-nav li.active {
    border-left-color: var(--ink-paper);
    background: rgba(255,255,255,0.04);
}

.admin-nav a {
    display: block;
    padding: 12px 25px;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 0.9em;
    letter-spacing: 2px;
    transition: color 0.3s;
}

.admin-nav a:hover {
    color: var(--ink-paper);
}

.admin-nav .nav-icon {
    margin-right: 10px;
    font-size: 1.1em;
}

.admin-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 30px 40px;
}

/* ===== 后台头部 ===== */
.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--ink-faded);
}

.admin-header h2 {
    font-family: 'Ma Shan Zheng', cursive;
    font-size: 1.8em;
    font-weight: 400;
    letter-spacing: 4px;
}

.admin-header .admin-actions {
    display: flex;
    gap: 10px;
}

/* ===== 统计卡片 ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--ink-paper);
    border-radius: 4px;
    padding: 25px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
    border-left: 3px solid var(--ink-faded);
}

.stat-card .stat-number {
    font-family: 'Ma Shan Zheng', cursive;
    font-size: 2.2em;
    font-weight: 400;
    color: var(--ink-black);
}

.stat-card .stat-label {
    font-size: 0.85em;
    color: var(--ink-light);
    letter-spacing: 2px;
    margin-top: 5px;
}

/* ===== 表格 ===== */
.table-container {
    background: var(--ink-paper);
    border-radius: 4px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
    overflow: hidden;
}

table {
    width: 100%;
    border-collapse: collapse;
}

table th {
    background: var(--ink-bg);
    padding: 12px 18px;
    text-align: left;
    font-size: 0.8em;
    color: var(--ink-light);
    letter-spacing: 2px;
    text-transform: uppercase;
    border-bottom: 1px solid var(--ink-faded);
}

table td {
    padding: 14px 18px;
    border-bottom: 1px solid rgba(0,0,0,0.04);
    font-size: 0.9em;
}

table tr:last-child td {
    border-bottom: none;
}

table tr:hover {
    background: rgba(0,0,0,0.02);
}

table .actions {
    display: flex;
    gap: 8px;
}

/* ===== 编辑器 ===== */
.editor-container {
    background: var(--ink-paper);
    border-radius: 4px;
    padding: 30px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.editor-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    padding: 10px;
    background: var(--ink-bg);
    border: 1px solid var(--ink-faded);
    border-bottom: none;
    border-radius: 3px 3px 0 0;
}

.editor-toolbar .toolbar-group {
    display: flex;
    gap: 3px;
    padding: 0 8px;
    border-right: 1px solid var(--ink-faded);
}

.editor-toolbar .toolbar-group:last-child {
    border-right: none;
}

.editor-toolbar button {
    padding: 6px 10px;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 2px;
    cursor: pointer;
    color: var(--ink-gray);
    font-size: 0.85em;
    transition: all 0.2s;
    font-family: inherit;
}

.editor-toolbar button:hover {
    background: var(--ink-paper);
    border-color: var(--ink-faded);
    color: var(--ink-black);
}

.editor-toolbar .color-picker-wrapper {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.editor-toolbar input[type="color"] {
    width: 28px;
    height: 28px;
    padding: 0;
    border: none;
    cursor: pointer;
    background: none;
}

#content-editor {
    width: 100%;
    min-height: 450px;
    padding: 20px;
    border: 1px solid var(--ink-faded);
    border-top: none;
    background: var(--ink-white);
    font-family: 'Noto Serif SC', serif;
    font-size: 1em;
    line-height: 1.9;
    color: var(--ink-dark);
    resize: vertical;
    border-radius: 0 0 3px 3px;
}

#content-editor:focus {
    outline: none;
    border-color: var(--ink-light);
}

/* ===== 预览面板 ===== */
.preview-panel {
    margin-top: 20px;
    background: var(--ink-paper);
    border: 1px solid var(--ink-faded);
    border-radius: 4px;
    padding: 25px;
}

.preview-panel h4 {
    font-family: 'Ma Shan Zheng', cursive;
    font-size: 1.1em;
    letter-spacing: 3px;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--ink-faded);
}

/* ===== 下载链接管理 ===== */
.download-section {
    margin-top: 25px;
    padding: 25px;
    background: var(--ink-bg);
    border-radius: 4px;
    border: 1px dashed var(--ink-faded);
}

.download-section h4 {
    font-family: 'Ma Shan Zheng', cursive;
    font-size: 1.1em;
    letter-spacing: 3px;
    margin-bottom: 15px;
}

.download-item-row {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-bottom: 10px;
}

.download-item-row input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--ink-faded);
    background: var(--ink-white);
    border-radius: 3px;
    font-family: inherit;
}

.download-item-row .remove-btn {
    background: none;
    border: none;
    color: var(--ink-accent);
    cursor: pointer;
    font-size: 1.2em;
    padding: 4px;
}

/* ===== Toast 提示 ===== */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 12px 24px;
    background: var(--ink-black);
    color: var(--ink-paper);
    border-radius: 3px;
    font-size: 0.9em;
    letter-spacing: 1px;
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.3s;
    z-index: 999;
}

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

.toast.error {
    background: var(--ink-accent);
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .admin-sidebar {
        width: 60px;
    }
    
    .admin-sidebar .brand {
        font-size: 1em;
        padding: 10px;
    }
    
    .admin-sidebar .brand span {
        display: none;
    }
    
    .admin-nav a {
        padding: 12px;
        text-align: center;
    }
    
    .admin-nav .nav-icon {
        margin: 0;
        font-size: 1.3em;
    }
    
    .admin-nav a span {
        display: none;
    }
    
    .admin-content {
        margin-left: 60px;
        padding: 20px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ===== 上传区域 ===== */
.upload-area {
    border: 2px dashed var(--ink-faded);
    border-radius: 4px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    margin: 20px 0;
    background: var(--ink-bg);
}

.upload-area:hover {
    border-color: var(--ink-light);
    background: var(--ink-paper);
}

.upload-area .upload-icon {
    font-size: 3em;
    color: var(--ink-light);
    margin-bottom: 10px;
}

.upload-area p {
    color: var(--ink-light);
    font-size: 0.9em;
    letter-spacing: 1px;
}

.upload-area input[type="file"] {
    display: none;
}

/* ===== 图片网格 ===== */
.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.image-grid .image-item {
    position: relative;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.image-grid .image-item img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    display: block;
}

.image-grid .image-item .image-actions {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
    padding: 8px;
    display: flex;
    gap: 5px;
    opacity: 0;
    transition: opacity 0.3s;
}

.image-grid .image-item:hover .image-actions {
    opacity: 1;
}

.image-grid .image-actions button {
    flex: 1;
    padding: 4px;
    border: none;
    border-radius: 2px;
    cursor: pointer;
    font-size: 0.75em;
    background: rgba(255,255,255,0.9);
    color: var(--ink-dark);
    transition: background 0.3s;
}

.image-grid .image-actions button:hover {
    background: white;
}

/* ===== 拖拽排序 ===== */
.sortable-handle {
    cursor: move;
    color: var(--ink-light);
}