/* ============================================
   用户系统样式
   登录注册、用户中心、会员购买
   ============================================ */

/* --- 第三方登录 --- */
.vdp-social-login {
    margin-top: 24px;
    text-align: center;
}
.vdp-social-separator {
    position: relative;
    margin: 16px 0;
    font-size: 12px;
    color: var(--muted-color, #999);
}
.vdp-social-separator::before,
.vdp-social-separator::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 35%;
    height: 1px;
    background: var(--border-color, #eee);
}
.vdp-social-separator::before { left: 0; }
.vdp-social-separator::after  { right: 0; }
.vdp-social-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
}
.vdp-social-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: #fff;
    font-size: 18px;
    text-decoration: none;
    transition: var(--transition, all .3s);
}
.vdp-social-btn:hover {
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md, 0 2px 12px rgba(0,0,0,.12));
    text-decoration: none;
}

/* --- 表单基础 --- */
.vdp-form .vdp-form-row {
    margin-bottom: 16px;
}
.vdp-form .vdp-form-row label {
    display: block;
    margin-bottom: 6px;
    font-size: 14px;
    color: var(--secondary-color, #555);
    font-weight: 500;
}
.vdp-form .vdp-form-row label .required {
    color: var(--danger-color, #F44336);
}
.vdp-form .vdp-form-row input[type=text],
.vdp-form .vdp-form-row input[type=email],
.vdp-form .vdp-form-row input[type=password],
.vdp-form .vdp-form-row textarea,
.vdp-form .vdp-form-row select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color, #eee);
    border-radius: var(--radius-sm, 4px);
    font-size: 14px;
    transition: var(--transition, all .3s);
    box-sizing: border-box;
}
.vdp-form .vdp-form-row input:focus,
.vdp-form .vdp-form-row textarea:focus,
.vdp-form .vdp-form-row select:focus {
    outline: none;
    border-color: var(--theme-color, #2196F3);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, .1);
}
.vdp-form .vdp-form-row input:disabled {
    background: #f5f5f5;
    color: #999;
}
.vdp-form-hint {
    display: block;
    margin-top: 4px;
    font-size: 12px;
    color: var(--muted-color, #999);
}
.vdp-checkbox {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-weight: normal;
}

/* --- 按钮 --- */
.vdp-btn-primary {
    display: inline-block;
    padding: 10px 24px;
    background: var(--theme-color, #2196F3);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm, 4px);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition, all .3s);
    text-decoration: none;
}
.vdp-btn-primary:hover {
    background: var(--theme-color-hover, #1976D2);
    color: #fff;
    text-decoration: none;
}
.vdp-btn-primary:disabled {
    background: #999;
    cursor: not-allowed;
}
.vdp-btn-block {
    display: block;
    width: 100%;
}

/* --- 登录/注册页面 --- */
.vdp-auth-page {
    margin-top: 60px;
}
.vdp-auth-box {
    background: #fff;
    border-radius: var(--main-radius, 8px);
    box-shadow: var(--shadow-md, 0 2px 12px rgba(0,0,0,.08));
    padding: 32px;
}
.vdp-auth-tabs {
    display: flex;
    gap: 24px;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border-color, #eee);
}
.vdp-auth-tabs a {
    padding: 12px 0;
    font-size: 16px;
    color: var(--muted-color, #999);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
}
.vdp-auth-tabs a.active {
    color: var(--theme-color, #2196F3);
    border-bottom-color: var(--theme-color, #2196F3);
    font-weight: 600;
}

/* --- 用户中心 --- */
.vdp-user-center {
    padding: 0 15px;
}
.vdp-user-card {
    background: #fff;
    border-radius: var(--main-radius, 8px);
    box-shadow: var(--shadow-sm, 0 1px 3px rgba(0,0,0,.06));
    padding: 24px;
    text-align: center;
    margin-bottom: 16px;
}
.vdp-user-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 3px solid var(--theme-color-light, #E3F2FD);
}
.vdp-user-name {
    margin-top: 12px;
    font-size: 16px;
    font-weight: 600;
    color: var(--main-color, #333);
}
.vdp-user-vip {
    margin-top: 8px;
    font-size: 12px;
    color: var(--muted-color, #999);
}
.vdp-vip-badge {
    display: inline-block;
    padding: 2px 8px;
    background: #f39c12;
    color: #fff;
    border-radius: 3px;
    font-size: 12px;
    font-weight: 600;
    margin-right: 6px;
}
.vdp-vip-expires {
    color: var(--muted-color, #999);
    font-size: 12px;
}
.vdp-btn-vip {
    display: inline-block;
    padding: 6px 14px;
    background: linear-gradient(90deg, #f39c12, #e67e22);
    color: #fff;
    border-radius: 16px;
    text-decoration: none;
    font-size: 12px;
}
.vdp-btn-vip:hover {
    color: #fff;
    text-decoration: none;
    opacity: .9;
}

/* 用户中心菜单 */
.vdp-user-menu {
    background: #fff;
    border-radius: var(--main-radius, 8px);
    box-shadow: var(--shadow-sm, 0 1px 3px rgba(0,0,0,.06));
    list-style: none;
    padding: 8px 0;
    margin: 0;
}
.vdp-user-menu li a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    color: var(--secondary-color, #555);
    text-decoration: none;
    transition: var(--transition, all .3s);
}
.vdp-user-menu li a:hover {
    background: var(--theme-color-light, #E3F2FD);
    color: var(--theme-color, #2196F3);
}
.vdp-user-menu li.active a {
    background: var(--theme-color, #2196F3);
    color: #fff;
}

/* 用户中心内容区 */
.vdp-user-content {
    background: #fff;
    border-radius: var(--main-radius, 8px);
    box-shadow: var(--shadow-sm, 0 1px 3px rgba(0,0,0,.06));
    padding: 24px;
    min-height: 400px;
}
.vdp-panel-title {
    margin-top: 0;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color, #eee);
    font-size: 18px;
}
.vdp-empty {
    padding: 60px 20px;
    text-align: center;
    color: var(--muted-color, #999);
}

/* 表格 */
.vdp-table {
    width: 100%;
    border-collapse: collapse;
}
.vdp-table th,
.vdp-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color, #eee);
    font-size: 14px;
}
.vdp-table th {
    background: #fafafa;
    font-weight: 600;
    color: var(--secondary-color, #555);
}

/* 文档列表项 */
.vdp-doc-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.vdp-doc-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-bottom: 1px solid var(--border-color, #eee);
}
.vdp-doc-title {
    flex: 1;
    color: var(--main-color, #333);
    text-decoration: none;
}
.vdp-doc-title:hover {
    color: var(--theme-color, #2196F3);
}
.vdp-doc-meta {
    font-size: 12px;
    color: var(--muted-color, #999);
}

/* VIP 提示框 */
.vdp-vip-tip {
    padding: 12px 16px;
    background: linear-gradient(90deg, #fff3cd, #ffe69c);
    border-left: 4px solid #f39c12;
    border-radius: 4px;
    margin-bottom: 16px;
    font-size: 14px;
}

/* VIP 状态卡片 */
.vdp-vip-status {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: linear-gradient(135deg, #fff3cd, #ffe69c);
    border-radius: var(--main-radius, 8px);
    margin-bottom: 24px;
}
.vdp-vip-level {
    font-size: 18px;
    font-weight: 600;
    color: #856404;
}
.vdp-vip-end {
    margin-top: 6px;
    font-size: 14px;
    color: #856404;
}
.vdp-vip-days {
    color: #d35400;
}
.vdp-vip-empty {
    padding: 16px;
    background: #f8f9fa;
    border-radius: 6px;
    color: var(--muted-color, #999);
    margin-bottom: 24px;
}

/* VIP 套餐卡片 */
.vdp-vip-products h3 {
    margin: 24px 0 16px;
    font-size: 16px;
}
.vdp-vip-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}
.vdp-vip-card {
    padding: 24px 20px;
    border: 2px solid var(--border-color, #eee);
    border-radius: var(--main-radius, 8px);
    text-align: center;
    transition: var(--transition, all .3s);
}
.vdp-vip-card:hover {
    border-color: var(--theme-color, #2196F3);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md, 0 2px 12px rgba(0,0,0,.08));
}
.vdp-vip-card-name {
    font-size: 16px;
    font-weight: 600;
}
.vdp-vip-card-price {
    margin: 12px 0;
    font-size: 28px;
    color: var(--danger-color, #F44336);
    font-weight: 700;
}
.vdp-vip-card-desc {
    color: var(--muted-color, #999);
    font-size: 13px;
    margin-bottom: 16px;
}
.vdp-btn-buy-vip {
    width: 100%;
    padding: 10px;
    background: linear-gradient(90deg, #f39c12, #e67e22);
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}
.vdp-btn-buy-vip:hover {
    opacity: .9;
}

/* VIP 特权 */
.vdp-vip-rights {
    margin-top: 32px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: var(--main-radius, 8px);
}
.vdp-vip-rights h3 {
    margin-top: 0;
    font-size: 16px;
}
.vdp-vip-rights ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.vdp-vip-rights ul li {
    padding: 6px 0;
    font-size: 14px;
}

/* 支付弹窗 */
.vdp-modal {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,.5);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}
.vdp-modal-box {
    background: #fff;
    padding: 32px;
    border-radius: var(--main-radius, 8px);
    text-align: center;
    max-width: 320px;
    position: relative;
}
.vdp-modal-close {
    position: absolute;
    top: 12px;
    right: 16px;
    font-size: 24px;
    cursor: pointer;
    color: var(--muted-color, #999);
}
.vdp-pay-amount {
    font-size: 24px;
    color: var(--danger-color, #F44336);
    font-weight: 700;
    margin: 12px 0;
}
.vdp-pay-tip {
    margin: 12px 0;
    font-size: 13px;
    color: var(--muted-color, #999);
}
#vdp-pay-status {
    color: var(--theme-color, #2196F3);
    font-size: 14px;
}

/* Flash 消息 */
.vdp-flash {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    padding: 12px 24px;
    border-radius: 4px;
    box-shadow: var(--shadow-lg, 0 4px 24px rgba(0,0,0,.12));
    z-index: 10000;
    opacity: 0;
    transition: all .3s ease;
    font-size: 14px;
}
.vdp-flash-show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}
.vdp-flash-success { background: #d4edda; color: #155724; border-left: 4px solid #28a745; }
.vdp-flash-error   { background: #f8d7da; color: #721c24; border-left: 4px solid #dc3545; }
.vdp-flash-info    { background: #d1ecf1; color: #0c5460; border-left: 4px solid #17a2b8; }

/* 响应式 */
@media (max-width: 768px) {
    .vdp-user-center .col-md-3,
    .vdp-user-center .col-md-9 {
        margin-bottom: 16px;
    }
    .vdp-vip-cards {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   小工具样式
   ============================================ */

/* 通用 widget 容器 */
.vdp-widget {
    background: #fff;
    border-radius: var(--main-radius, 8px);
    box-shadow: var(--shadow-sm, 0 1px 3px rgba(0,0,0,.06));
    padding: 16px;
    margin-bottom: 16px;
}
.vdp-widget .widget-title {
    margin: 0 0 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--theme-color, #2196F3);
    font-size: 16px;
    font-weight: 600;
    display: inline-block;
}

/* 文档列表小工具 */
.vdp-widget-docs {
    list-style: none;
    padding: 0;
    margin: 0;
}
.vdp-widget-doc-item {
    display: flex;
    gap: 10px;
    padding: 10px 0;
    border-bottom: 1px dashed var(--border-color, #eee);
}
.vdp-widget-doc-item:last-child { border-bottom: none; }
.vdp-widget-doc-thumb { flex-shrink: 0; }
.vdp-widget-doc-body { flex: 1; min-width: 0; }
.vdp-widget-doc-title {
    display: block;
    color: var(--main-color, #333);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.vdp-widget-doc-title:hover { color: var(--theme-color, #2196F3); }
.vdp-widget-doc-meta {
    margin-top: 4px;
    font-size: 12px;
    color: var(--muted-color, #999);
}
.vdp-widget-doc-meta span { margin-right: 12px; }

/* 分类导航 */
.vdp-widget-categories {
    list-style: none;
    padding: 0;
    margin: 0;
}
.vdp-widget-categories li a {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    color: var(--main-color, #333);
    text-decoration: none;
    border-bottom: 1px dashed var(--border-color, #eee);
}
.vdp-widget-categories li:last-child a { border-bottom: none; }
.vdp-widget-categories li a:hover { color: var(--theme-color, #2196F3); }
.vdp-widget-categories .cat-count {
    color: var(--muted-color, #999);
    font-size: 12px;
}

/* 站点统计 */
.vdp-widget-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.vdp-stat-row {
    text-align: center;
    padding: 12px 8px;
    background: var(--theme-color-light, #E3F2FD);
    border-radius: 6px;
}
.vdp-stat-num {
    display: block;
    font-size: 18px;
    font-weight: 700;
    color: var(--theme-color, #2196F3);
}
.vdp-stat-label {
    display: block;
    font-size: 12px;
    color: var(--muted-color, #999);
    margin-top: 2px;
}

/* 用户卡片 */
.vdp-widget-user-card.logged-in {
    text-align: center;
    padding: 8px 0;
}
.vdp-widget-user-card .vdp-widget-user-avatar img {
    border-radius: 50%;
    border: 3px solid var(--theme-color-light, #E3F2FD);
}
.vdp-widget-user-card .vdp-widget-user-name {
    margin: 8px 0;
    font-size: 16px;
    font-weight: 600;
}
.vdp-widget-user-vip-info {
    color: var(--muted-color, #999);
    font-size: 12px;
}
.vdp-widget-user-buy-vip {
    display: inline-block;
    margin-top: 4px;
    color: #f39c12;
    font-size: 12px;
    text-decoration: none;
}
.vdp-widget-user-stats {
    display: flex;
    justify-content: space-around;
    margin-top: 12px;
    border-top: 1px solid var(--border-color, #eee);
    padding-top: 12px;
}
.vdp-widget-user-stats a {
    text-align: center;
    text-decoration: none;
    color: var(--main-color, #333);
    flex: 1;
}
.vdp-widget-user-stats strong { display: block; font-size: 14px; }
.vdp-widget-user-stats span { font-size: 11px; color: var(--muted-color, #999); }
.vdp-widget-user-card.guest { text-align: center; padding: 20px 0; }
.vdp-widget-user-card.guest p { margin: 0 0 12px; color: var(--secondary-color, #555); font-size: 13px; }

/* 会员推广 */
.vdp-widget-vip-promo {
    text-align: center;
    padding: 16px 8px;
    background: linear-gradient(135deg, #fff8e1, #ffecb3);
    border-radius: var(--main-radius, 8px);
}
.vdp-vip-subtitle { font-size: 14px; color: #856404; margin-bottom: 12px; }
.vdp-vip-perks { font-size: 13px; color: #856404; line-height: 1.8; margin-bottom: 12px; }
.vdp-vip-from { font-size: 18px; font-weight: 700; color: #d35400; margin-bottom: 12px; }
.vdp-vip-btn {
    display: inline-block;
    padding: 8px 24px;
    background: linear-gradient(90deg, #f39c12, #e67e22);
    color: #fff;
    border-radius: 20px;
    text-decoration: none;
    font-size: 13px;
}
.vdp-vip-btn:hover { color: #fff; opacity: .9; text-decoration: none; }

.vdp-widget-empty {
    text-align: center;
    padding: 20px;
    color: var(--muted-color, #999);
    font-size: 13px;
}