/* 导航栏样式 */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: bold;
    color: #333;
    text-decoration: none;
    transition: color 0.2s;
}

.navbar-brand:hover {
    color: #007bff;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* 用户菜单样式 */
.user-menu {
    position: relative;
}

.user-menu-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: none;
    border: none;
    cursor: pointer;
    color: #333;
    font-size: 1rem;
    transition: color 0.2s;
}

.user-menu-button:hover {
    color: #007bff;
}

.user-menu-button .icon {
    width: 1rem;
    height: 1rem;
    transition: transform 0.2s;
}

.user-menu.active .user-menu-button .icon {
    transform: rotate(180deg);
}

.user-menu-content {
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 150px;
    background-color: #fff;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    display: none;
    z-index: 1000;
}

.user-menu.active .user-menu-content {
    display: block;
}

.user-menu-item {
    display: block;
    padding: 0.75rem 1rem;
    color: #333;
    text-decoration: none;
    transition: background-color 0.2s;
}

.user-menu-item:hover {
    background-color: #f8f9fa;
    color: #007bff;
}

.user-menu-item:first-child {
    border-top-left-radius: 4px;
    border-top-right-radius: 4px;
}

.user-menu-item:last-child {
    border-bottom-left-radius: 4px;
    border-bottom-right-radius: 4px;
}

/* 登录注册按钮 */
.auth-buttons {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.login-button {
    padding: 0.5rem 1rem;
    border: 1px solid var(--primary-color);
    border-radius: 6px;
    color: var(--primary-color);
    background: white;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.login-button:hover {
    background: rgba(76, 175, 80, 0.05);
    transform: translateY(-1px);
}

.register-button {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 6px;
    color: white;
    background: var(--primary-color);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(76, 175, 80, 0.2);
}

.register-button:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(76, 175, 80, 0.2);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar {
        padding: 0.75rem 1rem;
    }
}

@media (max-width: 480px) {
    .navbar {
        padding: 0.75rem;
    }

    .auth-buttons {
        gap: 0.5rem;
    }

    .login-button,
    .register-button {
        padding: 0.5rem 0.75rem;
    }
}