/* ===== 后台管理样式 ===== */

:root {
    --color-bg: #f5f6fa;
    --color-surface: #ffffff;
    --color-text: #1e293b;
    --color-text-soft: #64748b;
    --color-text-light: #94a3b8;
    --color-primary: #6366f1;
    --color-primary-light: #818cf8;
    --color-primary-soft: #eef2ff;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-border: #e2e8f0;
    --color-border-soft: #f1f5f9;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
    --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.06);
    --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.10);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --gradient-fresh: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
    --sidebar-width: 240px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--color-primary); }

/* ===== 整体布局 ===== */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

/* ===== 侧边栏 ===== */
.admin-sidebar {
    width: var(--sidebar-width);
    background: var(--color-surface);
    border-right: 1px solid var(--color-border-soft);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--color-border-soft);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--color-text);
}

.logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    background: var(--gradient-fresh);
    color: #fff;
    border-radius: 9px;
    font-size: 1.05rem;
    box-shadow: 0 4px 10px rgba(99, 102, 241, 0.3);
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 14px;
    border-radius: 10px;
    color: var(--color-text-soft);
    font-size: 0.93rem;
    font-weight: 500;
    transition: all 0.2s;
}

.nav-item:hover {
    background: var(--color-primary-soft);
    color: var(--color-primary);
}

.nav-item.active {
    background: var(--gradient-fresh);
    color: #fff;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.nav-icon {
    width: 20px;
    text-align: center;
    font-size: 1rem;
}

.sidebar-footer {
    padding: 12px;
    border-top: 1px solid var(--color-border-soft);
    display: flex;
    flex-direction: column;
    gap: 4px;
}

/* ===== 主区域 ===== */
.admin-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.admin-topbar {
    height: 64px;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border-soft);
    display: flex;
    align-items: center;
    padding: 0 28px;
    gap: 16px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.sidebar-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}

.sidebar-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
}

.page-title {
    font-size: 1.2rem;
    font-weight: 700;
    flex: 1;
}

.topbar-right { display: flex; align-items: center; gap: 16px; }

.user-chip {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 5px 12px 5px 5px;
    background: var(--color-bg);
    border-radius: 24px;
}

.user-avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--gradient-fresh);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
}

.user-name { font-size: 0.9rem; font-weight: 500; }

.admin-content {
    flex: 1;
    padding: 28px;
}

.admin-footer {
    padding: 16px 28px;
    text-align: center;
    color: var(--color-text-light);
    font-size: 0.82rem;
    border-top: 1px solid var(--color-border-soft);
    background: var(--color-surface);
}

/* ===== 卡片 / 统计 ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    padding: 22px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-soft);
    display: flex;
    align-items: center;
    gap: 16px;
    transition: all 0.2s;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #fff;
    flex-shrink: 0;
}

.stat-icon.purple { background: linear-gradient(135deg, #6366f1, #a855f7); }
.stat-icon.pink { background: linear-gradient(135deg, #ec4899, #f43f5e); }
.stat-icon.green { background: linear-gradient(135deg, #10b981, #14b8a6); }
.stat-icon.orange { background: linear-gradient(135deg, #f59e0b, #f97316); }

.stat-info { flex: 1; }
.stat-value { font-size: 1.8rem; font-weight: 800; line-height: 1.1; }
.stat-label { color: var(--color-text-soft); font-size: 0.88rem; margin-top: 2px; }

/* ===== 面板 ===== */
.panel {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-soft);
    overflow: hidden;
    margin-bottom: 24px;
}

.panel-header {
    padding: 18px 22px;
    border-bottom: 1px solid var(--color-border-soft);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.panel-title {
    font-size: 1.05rem;
    font-weight: 700;
}

.panel-body { padding: 22px; }

/* ===== 表格 ===== */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 14px 18px;
    text-align: left;
    border-bottom: 1px solid var(--color-border-soft);
    font-size: 0.9rem;
}

.data-table th {
    color: var(--color-text-soft);
    font-weight: 600;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    background: var(--color-bg);
}

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

.data-table tr:hover { background: var(--color-bg); }

.post-title-cell {
    max-width: 360px;
    font-weight: 600;
}

.post-title-cell a:hover { color: var(--color-primary); }

.row-actions {
    display: flex;
    gap: 8px;
}

/* ===== 标签徽章 ===== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 600;
}

.badge-published { background: #d1fae5; color: #065f46; }
.badge-draft { background: #fef3c7; color: #92400e; }
.badge-category { background: var(--color-primary-soft); color: var(--color-primary); }

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.88rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-fresh);
    color: #fff;
    box-shadow: 0 4px 10px rgba(99, 102, 241, 0.25);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 14px rgba(99, 102, 241, 0.35);
    color: #fff;
}

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

.btn-secondary:hover { background: var(--color-border-soft); }

.btn-danger {
    background: #fee2e2;
    color: var(--color-danger);
}

.btn-danger:hover { background: var(--color-danger); color: #fff; }

.btn-sm { padding: 5px 11px; font-size: 0.82rem; }

.btn-icon {
    padding: 6px 10px;
    background: transparent;
    color: var(--color-text-soft);
    border-radius: 6px;
}

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

/* ===== 表单 ===== */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-text);
}

.form-group .hint {
    font-weight: 400;
    color: var(--color-text-light);
    font-size: 0.82rem;
    margin-top: 4px;
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 0.93rem;
    background: var(--color-surface);
    color: var(--color-text);
    font-family: inherit;
    transition: border 0.2s, box-shadow 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
    line-height: 1.6;
}

select.form-control {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%2364748b' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* ===== 编辑器布局 ===== */
.editor-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 20px;
    align-items: start;
}

.editor-main {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    padding: 22px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-soft);
}

.editor-title-input {
    font-size: 1.5rem;
    font-weight: 700;
    border: none;
    outline: none;
    width: 100%;
    padding: 6px 0;
    border-bottom: 2px solid var(--color-border-soft);
    margin-bottom: 16px;
    background: transparent;
}

.editor-title-input:focus { border-color: var(--color-primary); }

.editor-toolbar {
    display: flex;
    gap: 4px;
    padding: 8px;
    background: var(--color-bg);
    border-radius: 8px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.tool-btn {
    padding: 6px 10px;
    background: transparent;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--color-text-soft);
    transition: all 0.15s;
}

.tool-btn:hover {
    background: var(--color-surface);
    color: var(--color-primary);
}

.editor-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 8px;
}

.tab-btn {
    padding: 6px 14px;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: 8px 8px 0 0;
    cursor: pointer;
    font-size: 0.88rem;
    color: var(--color-text-soft);
}

.tab-btn.active {
    background: var(--color-surface);
    color: var(--color-primary);
    border-bottom-color: var(--color-surface);
    font-weight: 600;
}

.editor-textarea {
    width: 100%;
    min-height: 480px;
    padding: 16px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-family: "JetBrains Mono", "SF Mono", Consolas, Monaco, monospace;
    font-size: 0.9rem;
    line-height: 1.7;
    resize: vertical;
    background: #fafbfc;
    color: var(--color-text);
}

.editor-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    background: #fff;
}

.editor-preview {
    min-height: 480px;
    padding: 16px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow-y: auto;
    background: #fff;
    line-height: 1.8;
}

.editor-sidebar {
    display: flex;
    flex-direction: column;
    gap: 16px;
    position: sticky;
    top: 84px;
}

/* Markdown 预览样式 (复用前台) */
.editor-preview h1, .editor-preview h2, .editor-preview h3 { margin: 0.8em 0 0.4em; }
.editor-preview h1 { font-size: 1.6rem; }
.editor-preview h2 { font-size: 1.35rem; }
.editor-preview h3 { font-size: 1.15rem; }
.editor-preview p { margin-bottom: 0.8em; }
.editor-preview pre {
    background: #1e293b; color: #e2e8f0; padding: 12px; border-radius: 8px; overflow-x: auto; font-size: 0.85rem;
}
.editor-preview code { font-family: monospace; }
.editor-preview :not(pre) > code { background: var(--color-primary-soft); color: var(--color-primary); padding: 2px 6px; border-radius: 4px; }
.editor-preview blockquote {
    border-left: 3px solid var(--color-primary); padding: 6px 12px; margin: 0.8em 0;
    background: var(--color-primary-soft); border-radius: 0 6px 6px 0; color: var(--color-text-soft);
}
.editor-preview ul, .editor-preview ol { padding-left: 1.5em; margin: 0.6em 0; }
.editor-preview img { max-width: 100%; border-radius: 6px; }

/* 封面上传 */
.cover-upload {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    padding: 18px;
    text-align: center;
    transition: all 0.2s;
    cursor: pointer;
}

.cover-upload:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-soft);
}

.cover-upload img {
    max-width: 100%;
    border-radius: 8px;
    margin-bottom: 10px;
}

.cover-upload-icon {
    font-size: 1.8rem;
    margin-bottom: 6px;
}

.cover-upload-text {
    font-size: 0.85rem;
    color: var(--color-text-soft);
}

/* ===== 提示消息 ===== */
.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.alert-success { background: #d1fae5; color: #065f46; }
.alert-error { background: #fee2e2; color: #991b1b; }
.alert-warning { background: #fef3c7; color: #92400e; }
.alert-info { background: #dbeafe; color: #1e40af; }

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

.empty-box .icon { font-size: 50px; margin-bottom: 12px; opacity: 0.5; }

/* ===== 搜索栏 ===== */
.toolbar {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    align-items: center;
    flex-wrap: wrap;
}

.toolbar .search {
    flex: 1;
    min-width: 220px;
    position: relative;
}

.toolbar .search input {
    width: 100%;
    padding: 9px 14px 9px 38px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 0.9rem;
    background: var(--color-surface);
}

.toolbar .search::before {
    content: '🔍';
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.85rem;
}

.toolbar .search input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}

/* ===== 登录页 ===== */
.login-body {
    background: linear-gradient(135deg, #eef2ff 0%, #fdf4ff 50%, #fff1f2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
    overflow: hidden;
}

.login-decoration {
    position: absolute;
    inset: 0;
    overflow: hidden;
    z-index: 0;
}

.login-decoration .blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(70px);
    opacity: 0.5;
    animation: float 9s ease-in-out infinite;
}

.login-decoration .blob-1 {
    width: 320px; height: 320px;
    background: #a78bfa; top: -80px; left: -80px;
}
.login-decoration .blob-2 {
    width: 260px; height: 260px;
    background: #f0abfc; bottom: -60px; right: -60px;
    animation-delay: 3s;
}
.login-decoration .blob-3 {
    width: 200px; height: 200px;
    background: #93c5fd; top: 40%; left: 50%;
    animation-delay: 6s;
}

@keyframes float {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-30px) scale(1.05); }
}

.login-container {
    width: 100%;
    max-width: 400px;
    position: relative;
    z-index: 1;
}

.login-card {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 40px 36px;
    box-shadow: 0 20px 50px rgba(15, 23, 42, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.login-header { text-align: center; margin-bottom: 28px; }

.login-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: var(--gradient-fresh);
    color: #fff;
    border-radius: 16px;
    font-size: 1.6rem;
    margin-bottom: 14px;
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.35);
}

.login-header h1 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 4px;
}

.login-header p { color: var(--color-text-soft); font-size: 0.9rem; }

.login-form .form-group { margin-bottom: 18px; }

.login-form label {
    display: block;
    margin-bottom: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-soft);
}

.login-form input {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    font-size: 0.95rem;
    background: rgba(255, 255, 255, 0.7);
    transition: all 0.2s;
}

.login-form input:focus {
    outline: none;
    border-color: var(--color-primary);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.btn-login {
    width: 100%;
    padding: 12px;
    background: var(--gradient-fresh);
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 6px;
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.35);
}

.btn-login:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 22px rgba(99, 102, 241, 0.45);
}

.login-hint {
    margin-top: 22px;
    padding: 14px;
    background: rgba(238, 242, 255, 0.6);
    border-radius: 10px;
    text-align: center;
    font-size: 0.82rem;
    color: var(--color-text-soft);
}

.login-hint p { margin-bottom: 4px; }
.login-hint code {
    background: var(--color-surface);
    padding: 1px 6px;
    border-radius: 4px;
    color: var(--color-primary);
    font-family: monospace;
}

.login-back {
    text-align: center;
    margin-top: 18px;
    font-size: 0.85rem;
}

.login-back a { color: var(--color-text-soft); }
.login-back a:hover { color: var(--color-primary); }

/* ===== 响应式 ===== */
@media (max-width: 960px) {
    .editor-layout { grid-template-columns: 1fr; }
    .editor-sidebar { position: static; }
}

@media (max-width: 768px) {
    .admin-sidebar {
        transform: translateX(-100%);
    }
    .admin-sidebar.open {
        transform: translateX(0);
        box-shadow: var(--shadow-lg);
    }
    .admin-main { margin-left: 0; }
    .sidebar-toggle { display: flex; }
    .admin-content { padding: 18px; }
    .form-row { grid-template-columns: 1fr; }
    .data-table { font-size: 0.82rem; }
    .data-table th, .data-table td { padding: 10px 12px; }
    .hide-mobile { display: none; }
}