/* 导航栏基础样式 */
.navbar {
    background: var(--gradient-primary);
    box-shadow: var(--box-shadow);
    padding: 1rem 0;
    transition: var(--transition);
}

.navbar-brand {
    padding: 0;
}

.navbar-brand img {
    height: 40px;
    transition: var(--transition);
}

/* PC端导航样式 */
@media (min-width: 992px) {
    .navbar-nav {
        gap: 0.5rem;
    }
    
    .navbar-nav .nav-item {
        position: relative;
    }
    
    .navbar-nav .nav-link {
        color: var(--white-color) !important;
        padding: 0.5rem 1rem;
        border-radius: var(--border-radius);
        transition: var(--transition);
        font-weight: 500;
    }
    
    .navbar-nav .nav-link:hover {
        background: rgba(255, 255, 255, 0.15);
        transform: translateY(-1px);
    }
    
    /* 下拉菜单样式 */
    .dropdown-menu {
        margin-top: 0.5rem;
        border: none;
        border-radius: var(--border-radius);
        box-shadow: var(--box-shadow);
        padding: 0.5rem 0;
        min-width: 200px;
    }
    
    .dropdown-item {
        padding: 0.75rem 1.5rem;
        transition: var(--transition);
        font-weight: 500;
    }
    
    .dropdown-item:hover {
        background-color: var(--light-color);
        color: var(--primary-color);
        transform: translateX(5px);
    }
}

/* 移动端导航样式 */
@media (max-width: 991.98px) {
    .navbar-collapse {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        width: 300px;
        height: 100vh;
        padding: 2rem 1.5rem;
        background: var(--white-color);
        box-shadow: -2px 0 10px rgba(0,0,0,0.1);
        z-index: 1050;
        transform: translateX(100%);
        transition: transform 0.3s ease-in-out;
    }
    
    .navbar-collapse.show {
        transform: translateX(0);
    }
    
    /* 移动端菜单样式 */
    .navbar-nav {
        margin: 1.5rem 0;
    }
    
    .navbar-nav .nav-link {
        color: var(--dark-color) !important;
        padding: 1rem 0;
        border-bottom: 1px solid rgba(0,0,0,0.05);
        font-weight: 500;
    }
    
    .navbar-nav .nav-link:active {
        color: var(--primary-color) !important;
    }
    
    /* 移动端搜索框样式 */
    .navbar-collapse .d-flex {
        margin: 1rem 0;
    }
    
    .form-control {
        border-radius: var(--border-radius);
        padding: 0.75rem 1rem;
    }
    
    /* 移动端购物车按钮样式 */
    .navbar-collapse .btn {
        width: 100%;
        padding: 0.75rem;
        margin-top: 1rem;
    }
}

/* 汉堡菜单按钮样式 */
.navbar-toggler {
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 0.5rem;
    width: 44px;
    height: 40px;
    position: relative;
    background-color: transparent;
    border-radius: var(--border-radius);
}

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

.navbar-toggler-icon,
.navbar-toggler-icon::before,
.navbar-toggler-icon::after {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--white-color);
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    transition: var(--transition);
}

.navbar-toggler-icon {
    top: 50%;
    transform: translate(-50%, -50%);
}

.navbar-toggler-icon::before {
    content: '';
    top: -7px;
}

.navbar-toggler-icon::after {
    content: '';
    bottom: -7px;
}

/* 展开状态的汉堡菜单 */
.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon {
    background: transparent;
}

.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::before {
    top: 0;
    transform: translate(-50%, 0) rotate(45deg);
}

.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon::after {
    bottom: 0;
    transform: translate(-50%, 0) rotate(-45deg);
}

/* 搜索框和购物车按钮样式 */
.navbar .form-control {
    border: none;
    background: rgba(255, 255, 255, 0.1);
    color: var(--white-color);
}

.navbar .form-control::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.navbar .btn-light {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: var(--white-color);
}

.navbar .btn-light:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* 购物车徽章样式 */
.cart-count {
    font-size: 0.7rem;
    padding: 0.25rem 0.5rem;
    transform: translate(-50%, -50%) !important;
}

/* 导航栏右侧工具栏样式 */
.navbar .navbar-tools {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* 搜索框样式优化 */
.navbar .search-form {
    position: relative;
    margin-right: 0.5rem;
}

.navbar .form-control {
    border: none;
    background: rgba(255, 255, 255, 0.15);
    color: var(--white-color);
    padding-right: 2.5rem;
    min-width: 200px;
    backdrop-filter: blur(5px);
}

.navbar .form-control:focus {
    background: rgba(255, 255, 255, 0.2);
    box-shadow: 0 0 0 0.2rem rgba(255, 255, 255, 0.1);
}

.navbar .form-control::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

/* 购物车按钮样式 */
.navbar .cart-btn {
    position: relative;
    padding: 0.5rem 1rem;
    color: var(--white-color);
    background: rgba(255, 255, 255, 0.15);
    border: none;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.navbar .cart-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-1px);
}

.navbar .cart-count {
    position: absolute;
    top: 0;
    right: 0;
    transform: translate(25%, -25%) !important;
    background-color: var(--danger-color);
    color: var(--white-color);
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border-radius: 1rem;
    min-width: 1.5rem;
    text-align: center;
}

/* 移动端适配 */
@media (max-width: 991.98px) {
    .navbar .navbar-tools {
        margin-top: 1rem;
        flex-direction: column;
        width: 100%;
        gap: 1rem;
    }

    .navbar .search-form {
        width: 100%;
        margin-right: 0;
    }

    .navbar .form-control {
        width: 100%;
        background: var(--light-color);
        color: var(--dark-color);
    }

    .navbar .form-control::placeholder {
        color: rgba(0, 0, 0, 0.5);
    }

    .navbar .cart-btn {
        width: 100%;
        background: var(--primary-color);
        padding: 0.75rem;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 0.5rem;
    }

    .navbar .cart-btn:hover {
        background: var(--primary-color);
        transform: none;
    }

    .navbar .cart-count {
        position: relative;
        transform: none !important;
        display: inline-block;
        margin-left: 0.5rem;
    }
}

/* 搜索按钮样式 */
.navbar .search-btn {
    background: transparent;
    border: none;
    color: var(--white-color);
    padding: 0.5rem 0.75rem;
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
}

.navbar .search-btn:hover {
    color: rgba(255, 255, 255, 0.9);
}