/* 后台管理样式 */

/* 登录页 */
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-box {
    background: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    width: 400px;
}

.login-box h1 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #555;
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.btn-primary {
    background: #1a73e8;
    color: #fff;
    border: none;
    padding: 12px 24px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    width: 100%;
}

.btn-primary:hover {
    background: #1557b0;
}

.back-link {
    text-align: center;
    margin-top: 20px;
}

.back-link a {
    color: #666;
    text-decoration: none;
}

/* 后台头部 */
.admin-header {
    background: #2c3e50;
    color: #fff;
    padding: 0;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-content h1 {
    font-size: 20px;
}

.header-content nav a {
    color: #fff;
    text-decoration: none;
    margin-left: 20px;
    padding: 8px 15px;
    border-radius: 4px;
    transition: background 0.2s;
}

.header-content nav a:hover {
    background: rgba(255,255,255,0.1);
}

/* 后台主体 */
.admin-main {
    max-width: 1200px;
    margin: 30px auto;
    padding: 0 20px;
}

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

.stat-card {
    background: #fff;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    text-align: center;
}

.stat-card h3 {
    color: #666;
    font-size: 14px;
    margin-bottom: 10px;
}

.stat-number {
    font-size: 36px;
    font-weight: bold;
    color: #1a73e8;
}

/* 表格 */
.data-table {
    width: 100%;
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.data-table th,
.data-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.data-table th {
    background: #f8f9fa;
    font-weight: 600;
    color: #555;
}

.data-table tr:hover {
    background: #f8f9fa;
}

.data-table a {
    color: #1a73e8;
    text-decoration: none;
}

/* 状态标签 */
.status-badge {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 3px;
    font-size: 12px;
}

.status-published {
    background: #d4edda;
    color: #155724;
}

.status-draft {
    background: #fff3cd;
    color: #856404;
}

/* 按钮 */
.btn-secondary {
    background: #6c757d;
    color: #fff;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
}

.btn-danger {
    background: #dc3545;
    color: #fff;
    border: none;
    padding: 5px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 13px;
}

/* 表单 */
.article-form {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.form-actions {
    margin-top: 20px;
    display: flex;
    gap: 10px;
}

/* 页面头部 */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.inline-form {
    display: flex;
    gap: 10px;
}

.inline-form input {
    padding: 8px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

/* 标签小 */
.tag-small {
    display: inline-block;
    padding: 2px 6px;
    background: #e8f4fd;
    color: #1a73e8;
    font-size: 12px;
    border-radius: 3px;
    margin-right: 5px;
}

/* 提示消息 */
.flash-messages {
    margin-bottom: 20px;
}

.alert {
    padding: 12px 20px;
    border-radius: 4px;
    margin-bottom: 10px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
}