/* 移动端优化组件库 */

/* ===== 移动端底部导航栏 ===== */
.mobile-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-white);
    border-top: 1px solid var(--border-color);
    padding: var(--space-sm) 0 env(safe-area-inset-bottom);
    z-index: 1030;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
}

.mobile-nav-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-xs);
}

.mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--text-medium);
    padding: var(--space-xs);
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    min-height: var(--mobile-tap-target);
}

.mobile-nav-item.active {
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
}

.mobile-nav-item i {
    font-size: 1.25rem;
    margin-bottom: 4px;
}

.mobile-nav-label {
    font-size: 0.75rem;
    font-weight: 500;
}

/* 导航项徽章 */
.nav-badge {
    position: absolute;
    top: -4px;
    right: 8px;
    background: var(--accent-color);
    color: white;
    border-radius: 50%;
    width: 18px;
    height: 18px;
    font-size: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ===== 移动端搜索栏 ===== */
.mobile-search-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-white);
    padding: var(--space-sm) var(--mobile-container-padding);
    z-index: 1040;
    box-shadow: var(--shadow-sm);
    display: none;
}

.mobile-search-bar.active {
    display: block;
}

.mobile-search-input {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: var(--mobile-font-base);
    background: var(--bg-light);
}

.mobile-search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* ===== 移动端快速操作按钮 ===== */
.mobile-fab {
    position: fixed;
    bottom: 80px;
    right: 20px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    border: none;
    box-shadow: var(--shadow-lg);
    z-index: 1020;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.mobile-fab:hover {
    background: #1D4ED8;
    transform: scale(1.1);
}

.mobile-fab i {
    font-size: 1.5rem;
}

/* ===== 移动端下拉刷新 ===== */
.pull-to-refresh {
    position: relative;
    overflow: hidden;
}

.pull-to-refresh-indicator {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translateY(-100%);
    transition: transform 0.3s ease;
    background: var(--bg-white);
}

.pull-to-refresh-indicator.active {
    transform: translateY(0);
}

.pull-to-refresh-icon {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===== 移动端模态框 ===== */
.mobile-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1050;
    display: none;
    align-items: flex-end;
}

.mobile-modal.active {
    display: flex;
}

.mobile-modal-content {
    background: var(--bg-white);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
    }
    to {
        transform: translateY(0);
    }
}

.mobile-modal-header {
    padding: var(--space-md);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    background: var(--bg-white);
    z-index: 1;
}

.mobile-modal-body {
    padding: var(--space-md);
}

.mobile-modal-close {
    background: transparent;
    border: none;
    font-size: 1.5rem;
    color: var(--text-medium);
    min-width: var(--mobile-tap-target);
    min-height: var(--mobile-tap-target);
}

/* ===== 移动端通知 ===== */
.mobile-notification {
    position: fixed;
    top: 10px;
    left: 50%;
    transform: translateX(-50%) translateY(-100%);
    background: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--space-md);
    z-index: 1060;
    min-width: 300px;
    max-width: 90%;
    transition: transform 0.3s ease;
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.mobile-notification.show {
    transform: translateX(-50%) translateY(0);
}

.notification-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.notification-icon.success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--secondary-color);
}

.notification-icon.error {
    background: rgba(239, 68, 68, 0.1);
    color: #EF4444;
}

.notification-icon.info {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
}

.notification-content {
    flex-grow: 1;
}

.notification-title {
    font-weight: 600;
    margin-bottom: 2px;
}

.notification-message {
    font-size: 0.875rem;
    color: var(--text-medium);
}

/* ===== 移动端加载指示器 ===== */
.mobile-loader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,255,255,0.9);
    z-index: 1070;
    display: none;
    align-items: center;
    justify-content: center;
}

.mobile-loader.active {
    display: flex;
}

.loader-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* ===== 移动端商品网格 ===== */
.mobile-product-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

@media (min-width: 768px) {
    .mobile-product-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .mobile-product-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ===== 移动端分类导航 ===== */
.mobile-category-nav {
    display: flex;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    gap: var(--space-sm);
    padding-bottom: var(--space-sm);
}

.mobile-category-item {
    flex: 0 0 auto;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: var(--text-medium);
    white-space: nowrap;
    transition: all 0.2s ease;
}

.mobile-category-item.active {
    background: var(--primary-color);
    color: white;
}

/* ===== 移动端筛选面板 ===== */
.mobile-filter-panel {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-white);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    max-height: 70vh;
    overflow-y: auto;
    z-index: 1040;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.mobile-filter-panel.active {
    transform: translateY(0);
}

.filter-section {
    padding: var(--space-md);
    border-bottom: 1px solid var(--border-color);
}

.filter-title {
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.filter-options {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.filter-option {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.filter-checkbox {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.filter-checkbox.checked {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.filter-checkbox.checked:after {
    content: '✓';
    color: white;
    font-size: 12px;
}

/* ===== 移动端购物车徽章 ===== */
.cart-floating-badge {
    position: fixed;
    bottom: 70px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    z-index: 1010;
    text-decoration: none;
}

.cart-floating-badge-count {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--accent-color);
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ===== 移动端返回顶部 ===== */
.mobile-back-to-top {
    position: fixed;
    bottom: 70px;
    right: 20px;
    width: 44px;
    height: 44px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.mobile-back-to-top.visible {
    opacity: 1;
}

/* ===== 移动端分页器 ===== */
.mobile-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) 0;
}

.pagination-button {
    width: 44px;
    height: 44px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-white);
    color: var(--text-medium);
}

.pagination-button.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.pagination-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ===== 移动端空状态 ===== */
.mobile-empty-state {
    text-align: center;
    padding: var(--space-xl) var(--space-md);
}

.empty-state-icon {
    width: 80px;
    height: 80px;
    background: var(--bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-md);
    color: var(--text-light);
}

.empty-state-icon i {
    font-size: 2rem;
}

.empty-state-title {
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.empty-state-description {
    color: var(--text-medium);
    margin-bottom: var(--space-lg);
}

/* ===== 移动端表单组件 ===== */
.mobile-form-group {
    margin-bottom: var(--space-lg);
}

.mobile-form-label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--space-sm);
}

.mobile-form-input {
    width: 100%;
    padding: var(--space-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--mobile-font-base);
    transition: border-color 0.2s ease;
}

.mobile-form-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.mobile-form-error {
    color: #EF4444;
    font-size: 0.875rem;
    margin-top: var(--space-xs);
}

/* ===== 移动端开关 ===== */
.mobile-switch {
    position: relative;
    display: inline-block;
    width: 52px;
    height: 28px;
}

.mobile-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.switch-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--border-color);
    transition: .4s;
    border-radius: 34px;
}

.switch-slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 4px;
    bottom: 4px;
    background: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .switch-slider {
    background: var(--primary-color);
}

input:checked + .switch-slider:before {
    transform: translateX(24px);
}

/* ===== 移动端评分组件 ===== */
.mobile-rating {
    display: flex;
    gap: 2px;
}

.rating-star {
    font-size: 1.5rem;
    color: var(--border-color);
    cursor: pointer;
    transition: color 0.2s ease;
}

.rating-star.active {
    color: #F59E0B;
}

.rating-star.half {
    position: relative;
    overflow: hidden;
}

.rating-star.half:before {
    content: "★";
    position: absolute;
    left: 0;
    width: 50%;
    overflow: hidden;
    color: #F59E0B;
}

/* ===== 移动端工具提示 ===== */
.mobile-tooltip-container {
    position: relative;
    display: inline-block;
}

.mobile-tooltip {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-dark);
    color: white;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    white-space: nowrap;
    z-index: 1080;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
}

.mobile-tooltip-container:hover .mobile-tooltip {
    opacity: 1;
    visibility: visible;
}

.mobile-tooltip:after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border-width: 5px;
    border-style: solid;
    border-color: var(--bg-dark) transparent transparent transparent;
}

/* ===== 移动端进度条 ===== */
.mobile-progress {
    width: 100%;
    height: 8px;
    background: var(--bg-light);
    border-radius: 4px;
    overflow: hidden;
}

.mobile-progress-bar {
    height: 100%;
    background: var(--primary-color);
    border-radius: 4px;
    transition: width 0.3s ease;
}

/* ===== 移动端选项卡 ===== */
.mobile-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.mobile-tab {
    padding: var(--space-md) var(--space-lg);
    white-space: nowrap;
    border-bottom: 2px solid transparent;
    color: var(--text-medium);
    text-decoration: none;
    transition: all 0.2s ease;
}

.mobile-tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.mobile-tab-content {
    padding: var(--space-md) 0;
}

/* ===== 移动端折叠面板 ===== */
.mobile-collapse {
    border-bottom: 1px solid var(--border-color);
}

.collapse-header {
    padding: var(--space-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.collapse-icon {
    transition: transform 0.3s ease;
}

.collapse-icon.active {
    transform: rotate(180deg);
}

.collapse-content {
    padding: 0 var(--space-md);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.collapse-content.active {
    padding-bottom: var(--space-md);
    max-height: 1000px;
}