/* 导航条基础样式 */
.bd-navbar {
    padding: .75rem 0;
    background-color: #7331f9;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    height: 64px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1030;
}

/* 主内容区域样式 */
body {
    padding-top: 64px; /* 与导航栏高度相同 */
}

@media (max-width: 991.98px) {
    body {
        padding-top: 56px; /* 移动端导航栏高度 */
    }
}

/* 导航条过渡效果 */
.navbar-transition {
    transition: transform 0.5s ease-out, 
                background-color 0.5s ease,
                box-shadow 0.5s ease;
    will-change: transform;
}

/* 导航条滚动效果 */
.navbar-scrolled {
    background-color: rgba(115, 49, 249, 0.98);
    backdrop-filter: blur(8px);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

/* 导航条隐藏效果 */
.navbar-hidden {
    transform: translateY(-100%);
    transition: transform 0.5s ease-out;
}

/* Logo样式 */
.navbar-brand {
    transition: transform 0.3s ease;
    font-weight: 600;
    display: flex;
    align-items: center;
    padding: 0.5rem 1rem;
    margin-right: 1rem;
}

.navbar-brand:hover {
    transform: scale(1.05);
}

.navbar-brand img {
    width: 40px;
    height: 31.86px;
}

/* 导航菜单样式 */
.navbar-nav {
    --bs-nav-link-padding-x: 0;
    --bs-nav-link-padding-y: 0.5rem;
    --bs-nav-link-font-weight: 500;
    --bs-nav-link-color: var(--bs-navbar-color);
    --bs-nav-link-hover-color: var(--bs-navbar-hover-color);
    --bs-nav-link-disabled-color: var(--bs-navbar-disabled-color);
    display: flex;
    flex-direction: row;
    padding-left: 0;
    margin-bottom: 0;
    list-style: none;
}

.bd-navbar-nav {
    margin-right: auto;
}

.bd-navbar-nav .nav-item {
    margin-right: 0.125rem;
}

.bd-navbar-nav .nav-link {
    padding: 0.5rem 0.75rem !important;
}

.navbar-nav.ms-md-auto .nav-item {
    margin-left: 0.25rem;
}

.navbar-nav.ms-md-auto .nav-link {
    padding: 0.5rem 0.75rem !important;
}

.nav-link {
    color: rgba(255, 255, 255, 0.85) !important;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 1rem !important;
    transition: all 0.3s ease;
    height: 40px;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: #fff;
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::before,
.nav-link:focus::before,
.nav-link.active::before {
    width: calc(100% - 2rem);
}

.nav-link:hover,
.nav-link:focus {
    color: #fff !important;
    transform: translateY(-1px);
}

.nav-link.active {
    color: #fff !important;
    font-weight: 600;
}

/* 图标样式 */
.navbar-nav .bi {
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.navbar-nav .bi:hover {
    transform: scale(1.1);
}

/* 分割线样式 */
.vr {
    height: 24px;
    margin: 0 0.375rem;
    opacity: 0.2;
    background-color: #fff;
    align-self: center;
    transition: opacity 0.3s ease;
}

.navbar-scrolled .vr {
    opacity: 0.15;
}

/* 移动端样式 */
@media (max-width: 991.98px) {
    .bd-navbar {
        height: 56px;
    }

    .navbar-nav {
        padding: 0.5rem 0;
        gap: 0.25rem;
    }

    .nav-link {
        padding: 0.625rem 1rem !important;
        height: 44px;
    }

    .nav-link::before {
        bottom: 6px;
    }

    .navbar-nav .bi {
        margin-right: 0.75rem;
    }

    .vr {
        display: none;
    }

    .bd-navbar .offcanvas-lg {
        background-color: #7331f9;
        box-shadow: 0 1rem 3rem rgba(0, 0, 0, .175);
        backdrop-filter: blur(8px);
    }
    
    .bd-navbar .navbar-nav .nav-link {
        padding: 0.75rem 1rem;
    }
}

/* 响应式布局 */
@media (min-width: 992px) {
    .navbar-nav {
        flex-direction: row;
        align-items: center;
    }

    .nav-item {
        display: flex;
        align-items: center;
    }
}

/* 登录注册图标样式 */
.nav-link[href="/login.php"],
.nav-link[href="/register.php"] {
    position: relative;
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.nav-link[href="/login.php"]:hover::before,
.nav-link[href="/register.php"]:hover::before {
    width: calc(100% - 2rem);
}

.nav-link[href="/login.php"] .bi,
.nav-link[href="/register.php"] .bi {
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.nav-link[href="/login.php"]:hover .bi,
.nav-link[href="/register.php"]:hover .bi {
    transform: scale(1.1);
}

/* 导航栏切换按钮 */
.navbar-toggler {
    padding: 0.5rem;
    border: none;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

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

.navbar-toggler .bi {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.5rem;
    transition: all 0.3s ease;
}

.navbar-toggler:hover .bi {
    color: #fff;
    transform: scale(1.1);
}

/* 移动端菜单优化 */
.offcanvas-lg {
    background-color: #7331f9;
    transition: transform 0.3s ease-in-out;
}

/* 搜索框样式 */
#docsearch {
    min-width: 200px;
}

/* 版本选择按钮样式 */
.btn-bd-version {
    color: rgba(255, 255, 255, .85);
}

.btn-bd-version:hover,
.btn-bd-version:focus {
    color: #fff;
}

/* 主题图标样式 */
.theme-icon-active {
    display: none;
}

[data-bs-theme="light"] .theme-icon-active.theme-icon-light,
[data-bs-theme="dark"] .theme-icon-active.theme-icon-dark,
.theme-icon-active.theme-icon-auto {
    display: inline-block;
}

/* 响应式调整 */
@media (max-width: 991.98px) {
    .bd-navbar .offcanvas-lg {
        background-color: #7331f9;
        box-shadow: 0 1rem 3rem rgba(0, 0, 0, .175);
    }
    
    .bd-navbar .navbar-nav .nav-link {
        padding: .5rem 0;
    }
    
    .bd-navbar .dropdown-menu {
        background-color: transparent;
        border: 0;
        padding-left: 1rem;
    }
    
    .bd-navbar .dropdown-item {
        color: rgba(255, 255, 255, .85);
    }
    
    .bd-navbar .dropdown-item:hover,
    .bd-navbar .dropdown-item:focus {
        color: #fff;
        background-color: rgba(255, 255, 255, 0.1);
    }
}

/* Logo hover 效果 */
.navbar-brand {
    transition: transform 0.3s ease;
}

.navbar-brand:hover {
    transform: scale(1.05);
}

/* 社交媒体图标动画 */
.bd-navbar .navbar-nav .bi {
    transition: transform 0.3s ease;
}

.bd-navbar .navbar-nav a:hover .bi {
    transform: translateY(-2px);
}

/* 滚动效果 */
.bd-navbar.navbar-scrolled {
    background-color: rgba(115, 49, 249, 0.95);
    backdrop-filter: blur(8px);
    height: 56px;
}

/* 主题切换图标动画 */
.theme-icon-active {
    transition: transform 0.3s ease;
}

.btn-bd-primary:hover .theme-icon-active {
    transform: rotate(180deg);
}

/* 导航栏基础样式 */
.navbar {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 0.75rem 0;
}

.navbar-brand {
    font-weight: 600;
    color: #212529;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-brand img {
    transition: transform 0.3s ease;
}

.navbar-brand:hover img {
    transform: scale(1.1);
}

.nav-link {
    color: #495057;
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #0d6efd;
}

.nav-auth-buttons {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-auth-buttons .btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.nav-auth-buttons .btn-outline-primary {
    border-color: #0d6efd;
    color: #0d6efd;
}

.nav-auth-buttons .btn-outline-primary:hover {
    background-color: #0d6efd;
    color: white;
    transform: translateY(-1px);
}

.nav-auth-buttons .btn-primary {
    background-color: #0d6efd;
    border-color: #0d6efd;
    color: white;
}

.nav-auth-buttons .btn-primary:hover {
    background-color: #0b5ed7;
    border-color: #0a58ca;
    transform: translateY(-1px);
}

/* 响应式调整 */
@media (max-width: 991.98px) {
    .nav-auth-buttons {
        margin-top: 1rem;
        justify-content: center;
    }
    
    .nav-auth-buttons .btn {
        width: 100%;
        justify-content: center;
    }
}

/* 登录注册按钮组样式 */
.nav-auth-group {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    margin-left: 0.25rem;
}

.nav-auth-group .nav-link {
    padding: 0.5rem 0.75rem !important;
}

@media (max-width: 991.98px) {
    .nav-auth-group {
        flex-direction: column;
        gap: 0;
        margin-left: 0;
    }

    .nav-auth-group .nav-link {
        padding: 0.625rem 1rem !important;
    }
}

/* 用户导航组样式 */
.nav-user-group {
    display: flex;
    align-items: center;
    margin-left: 0.5rem;
    position: relative;
}

.nav-user-group .nav-link {
    padding: 0.5rem 0.75rem !important;
    height: 40px;
    display: flex;
    align-items: center;
    color: rgba(255, 255, 255, 0.85) !important;
    transition: all 0.2s ease;
}

.nav-user-group .nav-link:hover,
.nav-user-group .nav-link:focus {
    color: #fff !important;
}

.nav-user-group .dropdown-toggle::after {
    margin-left: 0.5rem;
    vertical-align: middle;
    opacity: 0.8;
}

.nav-user-group .bi {
    font-size: 1.25rem;
}

.nav-user-group .bi-person-circle {
    font-size: 1.5rem;
    margin-right: 0.5rem;
}

/* 用户下拉菜单样式 */
.nav-user-group .dropdown-menu {
    display: none;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
    box-shadow: 0 4px 12px rgba(115, 49, 249, 0.15);
    border: none;
    border-radius: 8px;
    padding: 0.5rem 0;
    min-width: 200px;
    background-color: var(--bs-body-bg);
    margin-top: 0.5rem;
    position: absolute;
    top: 100%;
    right: 0;
    z-index: 1031;
}

.nav-user-group .dropdown-menu.show {
    display: block;
    opacity: 1;
    transform: translateY(0);
    animation: dropdownShow 0.3s ease forwards;
}

@keyframes dropdownShow {
    0% {
        opacity: 0;
        transform: translateY(-10px);
        box-shadow: 0 2px 5px rgba(115, 49, 249, 0.1);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
        box-shadow: 0 4px 12px rgba(115, 49, 249, 0.2);
    }
}

.nav-user-group .dropdown-item {
    padding: 0.6rem 1.2rem;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
    color: var(--bs-body-color);
}

.nav-user-group .dropdown-item:hover {
    background-color: rgba(115, 49, 249, 0.05);
    color: #7331f9;
    transform: translateX(5px);
}

.nav-user-group .dropdown-item:active {
    background-color: rgba(115, 49, 249, 0.1);
    color: #7331f9;
}

.nav-user-group .dropdown-divider {
    margin: 0.5rem 0;
    border-top: 1px solid var(--bs-border-color);
}

/* 移动端适配 */
@media (max-width: 991.98px) {
    .nav-user-group {
        margin: 0;
        width: 100%;
    }

    .nav-user-group .nav-link {
        padding: 0.75rem 1rem !important;
        flex-direction: column;
        align-items: flex-start;
    }

    .nav-user-group .d-lg-none {
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        margin-top: 0.5rem;
        padding-top: 0.5rem;
    }

    .nav-user-group .d-lg-none .nav-link {
        padding: 0.5rem 0 !important;
    }

    .nav-user-group .dropdown-menu {
        position: static;
        width: 100%;
        margin: 0;
        padding: 0.25rem 0;
        box-shadow: none;
        background-color: transparent;
        border: none;
        border-radius: 0;
    }

    .nav-user-group .dropdown-item {
        padding: 0.625rem 0;
        color: rgba(255, 255, 255, 0.85);
    }

    .nav-user-group .dropdown-item:hover,
    .nav-user-group .dropdown-item:focus {
        background-color: transparent;
        color: #fff;
    }

    .nav-user-group .dropdown-item .bi {
        color: rgba(255, 255, 255, 0.85);
    }

    .nav-user-group .dropdown-item:hover .bi {
        color: #fff;
    }

    .nav-user-group .dropdown-divider {
        border-color: rgba(255, 255, 255, 0.1);
        margin: 0.375rem 0;
        opacity: 0.2;
    }
}