/* GIF工具箱 - 导航栏样式 */

/* 导航栏基础样式 */
.navbar {
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.08);
    padding: 0.5rem 0;
    background-color: #fff !important;
    transition: all 0.3s ease;
}

/* 品牌样式 */
.navbar-brand {
    font-size: 1.3rem;
    font-weight: 600;
    padding: 0.5rem 0;
    color: #333;
    transition: color 0.3s ease;
}

.navbar-brand:hover {
    color: #4caf50;
}

.navbar-brand i {
    font-size: 1.4rem;
    margin-right: 0.3rem;
    color: #4caf50;
}

/* 导航菜单样式 */
.navbar-nav {
    margin-left: auto;
}

.navbar-nav .nav-link {
    padding: 0.5rem 1rem;
    color: #555;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: 0.25rem;
    transition: all 0.3s ease;
    position: relative;
}

.navbar-nav .nav-link:hover {
    color: #4caf50;
    background-color: #f5f5f5;
}

.navbar-nav .nav-link.active {
    color: #4caf50;
    background-color: #e8f5e9;
    font-weight: 600;
}

.navbar-nav .nav-link i {
    margin-right: 0.3rem;
    font-size: 1rem;
}

/* 下拉菜单样式 */
.dropdown-menu {
    border: none;
    border-radius: 0.5rem;
    box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.15);
    padding: 0.5rem 0;
    margin-top: 0.25rem;
    min-width: 200px;
    animation: dropdownFade 0.3s ease;
}

@keyframes dropdownFade {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown-item {
    padding: 0.6rem 1.5rem;
    font-size: 0.9rem;
    color: #555;
    transition: all 0.2s ease;
    border-radius: 0.25rem;
    margin: 0 0.5rem;
}

.dropdown-item:hover {
    background-color: #f5f5f5;
    color: #4caf50;
    transform: translateX(5px);
}

.dropdown-item.active {
    background-color: #e8f5e9;
    color: #4caf50;
    font-weight: 600;
}

.dropdown-item i {
    margin-right: 0.5rem;
    width: 1.2rem;
    text-align: center;
}

/* 下拉箭头样式 */
.dropdown-toggle::after {
    margin-left: 0.4rem;
    vertical-align: 0.15em;
    transition: transform 0.3s ease;
}

.dropdown-toggle[aria-expanded="true"]::after {
    transform: rotate(180deg);
}

/* 移动端菜单按钮样式 */
.navbar-toggler {
    border: none;
    padding: 0.5rem;
}

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

/* 移动端样式 */
@media (max-width: 991px) {
    .navbar-nav {
        margin-left: 0;
        padding-top: 1rem;
    }

    .navbar-nav .nav-link {
        padding: 0.7rem 1rem;
        margin: 0.2rem 0;
    }

    .dropdown-menu {
        box-shadow: none;
        border-left: 3px solid #4caf50;
        margin-left: 1rem;
        margin-top: 0.5rem;
        background-color: #f9f9f9;
    }

    .dropdown-item {
        padding: 0.5rem 1rem;
    }

    .dropdown-item:hover {
        transform: translateX(0);
    }
}

/* 响应式优化 */
@media (min-width: 992px) {
    .navbar-expand-lg .navbar-nav .nav-link {
        margin: 0 0.2rem;
    }

    /* 桌面端悬浮显示下拉菜单 */
    .dropdown:hover .dropdown-menu {
        display: block;
    }

    /* 保持下拉菜单打开，即使鼠标在菜单和触发器之间移动 */
    .dropdown-menu {
        margin-top: 0;
    }

    /* 使用伪元素填补间隙 */
    .dropdown::before {
        content: '';
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        height: 0.25rem;
        background: transparent;
    }
}

/* 页面内容顶部间距 */
body {
    padding-top: 76px;
}

/* 广告卡片样式 */
.ad-card {
    margin-top: 20px;
    margin-bottom: 20px;
}

.ad-card .card-body {
    text-align: center;
    padding: 20px;
}

/* 版权链接样式 */
.card-footer a {
    text-decoration: none;
    color: inherit;
}

.card-footer a:hover {
    text-decoration: underline;
}