/* ============================================
   管理后台样式 - admin.css
   ============================================ */

.admin-wrapper {
    max-width: 1000px;
    margin: 0 auto;
    min-height: 400px;
}

/* ---- 登录表单 ---- */
.admin-login-card {
    max-width: 400px;
    margin: 80px auto;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
    text-align: center;
}

.admin-login-card h3 {
    font-size: 1.5rem;
    margin-bottom: 24px;
    font-weight: 800;
}

/* ---- 仪表盘 ---- */
.admin-dashboard {
    display: flex;
    flex-direction: column;
    gap: 24px;
    animation: admin-fade-in 0.3s ease;
}

.admin-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.admin-nav {
    display: flex;
    gap: 8px;
}

.admin-nav-btn {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.admin-nav-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.admin-nav-btn.active {
    color: #fff;
    background: var(--gradient-primary);
}

/* ---- 列表与表格 ---- */
.admin-content-area {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    overflow-x: auto;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.9rem;
}

.admin-table th,
.admin-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
}

.admin-table th {
    font-weight: 600;
    color: var(--text-tertiary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.admin-table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

/* ---- 编辑器 ---- */
.admin-editor {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.admin-editor-row {
    display: flex;
    gap: 16px;
}

.admin-editor .form-group {
    flex: 1;
}

.admin-editor-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    min-height: 400px;
}

.admin-editor-textarea {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.6;
    padding: 16px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    resize: vertical;
    outline: none;
}

.admin-editor-preview {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    background: rgba(255, 255, 255, 0.02);
    overflow-y: auto;
    color: var(--text-secondary);
}

.admin-editor-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

/* ---- 按钮变体 ---- */
.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
    border-radius: var(--radius-sm);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.btn-danger:hover {
    background: #ef4444;
    color: #fff;
}

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