/* 响应式优化样式 */

/* ==================== 基础优化 ==================== */
* {
    -webkit-tap-highlight-color: transparent;
}

html {
    scroll-behavior: smooth;
}

body {
    padding-bottom: 70px;
}

/* ==================== 导航栏优化 ==================== */
.navbar {
    padding: 0.5rem 0;
    background-color: #f8f9fa;
}

/* 确保导航栏内的下拉菜单能正常显示 */
.navbar .dropdown,
.navbar .dropup {
    position: relative;
    z-index: 1050;
}

.navbar .dropdown-menu {
    position: absolute;
    z-index: 1050;
}

.navbar-brand {
    font-size: 1.1rem;
    padding: 0.25rem 0;
}

.navbar-toggler {
    padding: 0.25rem 0.5rem;
    border: none;
}

.navbar-toggler:focus {
    box-shadow: none;
}

@media (max-width: 991.98px) {
    .navbar-collapse {
        position: fixed;
        top: 56px;
        left: 0;
        right: 0;
        background-color: #fff;
        z-index: 1040;
        max-height: calc(100vh - 56px);
        overflow-y: auto;
        border-top: 1px solid rgba(0,0,0,0.1);
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    }
    
    .navbar-nav {
        padding: 1rem;
    }
    
    .nav-item {
        margin-bottom: 0.5rem;
    }
    
    .nav-link {
        padding: 0.75rem 1rem;
        border-radius: 0.5rem;
        background-color: #f8f9fa;
    }
    
    .nav-link:hover {
        background-color: #e9ecef;
    }
}

/* 右侧功能区优化 */
@media (max-width: 767.98px) {
    .navbar .d-flex.align-items-center {
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .navbar .btn {
        padding: 0.375rem 0.5rem;
        font-size: 0.8rem;
    }
    
    .login-window {
        position: static !important;
    }
    
    .login-window > div {
        width: 280px !important;
        position: fixed;
        top: 56px;
        right: 10px;
        z-index: 1050;
    }
}

/* ==================== 移动端底部导航 ==================== */
.mobile-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: #fff;
    border-top: 1px solid rgba(0,0,0,0.1);
    z-index: 1030;
    display: none;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
}

.mobile-bottom-nav .nav-item {
    flex: 1;
    text-align: center;
    padding: 0.5rem 0.25rem;
}

.mobile-bottom-nav .nav-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.25rem;
    color: #6c757d;
    text-decoration: none;
    transition: color 0.2s;
}

.mobile-bottom-nav .nav-link:hover,
.mobile-bottom-nav .nav-link.active {
    color: #0d6efd;
}

.mobile-bottom-nav .nav-link i {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.mobile-bottom-nav .nav-link span {
    font-size: 0.7rem;
    white-space: nowrap;
}

@media (max-width: 767.98px) {
    .mobile-bottom-nav {
        display: flex;
    }
}

/* ==================== 容器和间距优化 ==================== */
.container {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
}

@media (max-width: 575.98px) {
    .container {
        padding-left: 0.5rem;
        padding-right: 0.5rem;
    }
    
    .my-4 {
        margin-top: 1rem !important;
        margin-bottom: 1rem !important;
    }
    
    .mb-5 {
        margin-bottom: 1.5rem !important;
    }
    
    .py-4 {
        padding-top: 1rem !important;
        padding-bottom: 1rem !important;
    }
}

/* ==================== 卡片优化 ==================== */
.card {
    margin-bottom: 1rem;
}

.card-body {
    padding: 1rem;
}

@media (max-width: 575.98px) {
    .card-body {
        padding: 0.75rem;
    }
    
    .card-title {
        font-size: 1rem;
    }
    
    .card-text {
        font-size: 0.9rem;
    }
}

/* ==================== 网格布局优化 ==================== */
.row.g-4 {
    --bs-gutter-y: 1rem;
    --bs-gutter-x: 1rem;
}

@media (max-width: 575.98px) {
    .row.g-4 {
        --bs-gutter-y: 0.75rem;
        --bs-gutter-x: 0.75rem;
    }
    
    .col-lg-3, .col-md-4, .col-md-3 {
        flex: 0 0 50%;
        max-width: 50%;
    }
    
    .col-md-6, .col-md-8 {
        flex: 0 0 100%;
        max-width: 100%;
    }
}

@media (max-width: 374.98px) {
    .col-lg-3, .col-md-4, .col-md-3, .col-sm-6 {
        flex: 0 0 100%;
        max-width: 100%;
    }
}

/* ==================== 轮播图优化 ==================== */
.carousel-item img {
    object-fit: cover;
    height: 200px;
}

@media (min-width: 768px) {
    .carousel-item img {
        height: 300px;
    }
}

@media (min-width: 992px) {
    .carousel-item img {
        height: 400px;
    }
}

.carousel-control-prev,
.carousel-control-next {
    width: 40px;
}

@media (max-width: 575.98px) {
    .carousel-control-prev,
    .carousel-control-next {
        width: 30px;
    }
    
    .carousel-control-prev-icon,
    .carousel-control-next-icon {
        width: 1rem;
        height: 1rem;
    }
    
    .carousel-indicators {
        bottom: 5px;
    }
    
    .carousel-indicators button {
        width: 8px;
        height: 8px;
        border-radius: 50%;
    }
}

/* ==================== 按钮优化 ==================== */
.btn {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
}

@media (max-width: 575.98px) {
    .btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.85rem;
    }
    
    .btn-lg {
        padding: 0.6rem 1.2rem;
        font-size: 0.95rem;
    }
}

/* 增大点击区域 */
.btn,
.nav-link,
a {
    min-height: 44px;
    min-width: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* ==================== 表单优化 ==================== */
.form-control {
    padding: 0.5rem 0.75rem;
    font-size: 1rem;
}

.form-label {
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

@media (max-width: 575.98px) {
    .form-control {
        padding: 0.4rem 0.6rem;
        font-size: 16px;
    }
}

/* ==================== 标题优化 ==================== */
h1 {
    font-size: 1.75rem;
}

h2 {
    font-size: 1.5rem;
}

h3 {
    font-size: 1.25rem;
}

h4 {
    font-size: 1.1rem;
}

h5 {
    font-size: 1rem;
}

h6 {
    font-size: 0.9rem;
}

@media (max-width: 575.98px) {
    h1 {
        font-size: 1.5rem;
    }
    
    h2 {
        font-size: 1.25rem;
    }
    
    h3 {
        font-size: 1.1rem;
    }
    
    .lead {
        font-size: 1rem;
    }
}

/* ==================== 页脚优化 ==================== */
footer {
    padding-bottom: 80px;
    position: relative;
    clear: both;
    display: block;
}

@media (max-width: 767.98px) {
    footer .col-md-3 {
        flex: 0 0 50%;
        max-width: 50%;
    }
}

@media (max-width: 575.98px) {
    footer .col-md-3,
    footer .col-sm-6 {
        flex: 0 0 100%;
        max-width: 100%;
    }
    
    footer h5 {
        font-size: 1rem;
        margin-bottom: 0.75rem;
    }
    
    footer ul li {
        margin-bottom: 0.25rem;
    }
    
    footer ul li a {
        font-size: 0.9rem;
    }
}

/* ==================== Toast 优化 ==================== */
.alert {
    padding: 0.75rem 1rem;
}

@media (max-width: 575.98px) {
    .alert {
        left: 10px;
        right: 10px;
        top: 10px;
        max-width: none;
    }
}

/* ==================== 图片优化 ==================== */
img {
    max-width: 100%;
    height: auto;
}

.card-img-top {
    object-fit: cover;
    height: 180px;
}

@media (max-width: 575.98px) {
    .card-img-top {
        height: 150px;
    }
}

/* ==================== 列表优化 ==================== */
.list-group-item {
    padding: 0.75rem 1rem;
}

@media (max-width: 575.98px) {
    .list-group-item {
        padding: 0.6rem 0.75rem;
        font-size: 0.9rem;
    }
}

/* ==================== 间距微调 ==================== */
@media (max-width: 575.98px) {
    .mb-3 {
        margin-bottom: 0.75rem !important;
    }
    
    .mb-4 {
        margin-bottom: 1rem !important;
    }
    
    .mt-4 {
        margin-top: 1rem !important;
    }
    
    .py-3 {
        padding-top: 0.75rem !important;
        padding-bottom: 0.75rem !important;
    }
    
    .gap-3 {
        gap: 0.75rem !important;
    }
    
    .gap-4 {
        gap: 1rem !important;
    }
}

/* ==================== 触摸优化 ==================== */
/* 防止双击缩放 */
body {
    touch-action: manipulation;
}

/* 改善滚动体验 */
.section {
    -webkit-overflow-scrolling: touch;
}

/* 隐藏滚动条但保留功能 */
.hide-scrollbar::-webkit-scrollbar {
    display: none;
}

.hide-scrollbar {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

/* ==================== 加载状态优化 ==================== */
.loading-skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* ==================== 安全区域优化（针对刘海屏） ==================== */
@supports (padding: max(0px)) {
    body {
        padding-left: max(0px, env(safe-area-inset-left));
        padding-right: max(0px, env(safe-area-inset-right));
        padding-bottom: calc(70px + max(0px, env(safe-area-inset-bottom)));
    }
    
    .mobile-bottom-nav {
        padding-bottom: max(0px, env(safe-area-inset-bottom));
    }
}

/* ==================== 打印优化 ==================== */
@media print {
    .mobile-bottom-nav,
    .navbar-toggler,
    .carousel-control-prev,
    .carousel-control-next,
    .carousel-indicators {
        display: none !important;
    }
    
    body {
        padding-bottom: 0;
    }
}