/* 导航栏样式 - 自定义覆盖Bootstrap默认样式 */
.navbar {
    min-height: 56px;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    will-change: transform;
}

.navbar.bg-primary {
    background-color: rgba(53, 128, 240, 0.85) !important;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    padding-top: 0 !important;
    padding-bottom: 0 !important;
}

.navbar .container {
    max-width: 1200px !important;
    margin: 0 auto !important;
    width: 100% !important;
    padding-left: 0 !important;
    padding-right: 0 !important;
}

.navbar-dark .navbar-brand {
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-left: 30px;
}

.navbar-nav .nav-item {
    margin-left: 5px;
    margin-right: 5px;
    min-width: 80px;
    text-align: center;
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
}

.navbar-nav .nav-link {
    position: relative;
    padding: 0.75rem 1rem !important;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.95);
    transition: none;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus {
    color: #ffffff;
}

.navbar-nav .nav-link i {
    margin-right: 5px;
    width: 16px;
    text-align: center;
}

.navbar-toggler {
    margin: 0 !important;
    padding: 0 !important;
    border: none !important;
    background: none !important;
    box-shadow: none !important;
}

.navbar-toggler-icon {
    width: 2rem;
    height: 2rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
}

/* 覆盖 Bootstrap 导航排列 - 始终横向排列 */
.navbar-nav {
    align-items: center;
}

/* 下拉菜单样式 - 自定义覆盖 */
.dropdown-toggle::after {
    opacity: 0;
    transition: none;
}

.nav-item.dropdown:hover .dropdown-toggle::after,
.dropdown-toggle:focus::after,
.dropdown-toggle.show::after {
    opacity: 1;
}

.dropdown-menu {
    border: none;
    border-radius: 0;
    padding: 0;
    margin-top: 4px;
    background-color: rgb(247, 249, 250);
    box-shadow: none;
    width: 130px !important;
    min-width: 130px !important;
    max-width: 130px !important;
    transform-origin: top;
}

.dropdown-item {
    padding: 0.8rem 0.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    color: #333;
    text-align: left;
    transition: background-color 0.2s ease;
}

.dropdown-item:hover,
.dropdown-item:focus {
    background-color: rgba(0, 0, 0, 0.05);
}

.dropdown-item:last-child {
    border-bottom: none;
}

.dropdown-item.active,
.dropdown-item:active {
    color: #333;
    text-decoration: none;
    background-color: transparent;
}

body {
    background-color: #f5f5f5;
}

main {
    flex: 1 0 auto;
    margin-top: 56px;
    min-height: calc(100vh - 200px);
}

.footer {
    margin-top: 2rem;
    padding: 1rem 0;
    background-color: #f8f9fa;
    flex-shrink: 0;
}

.user-avatar {
    width: 23px;
    height: 23px;
    object-fit: cover;
}

html {
    scroll-behavior: smooth;
}

#flash-messages {
    display: none;
}

html, body {
    overflow-x: hidden; /* 防止横向滚动条 */
}