/* ------------------ NavBar ------------------ */
.navbar {
    display: flex;
    justify-content: space-between;
    background-color: var(--white);
    padding: 1rem 2rem;
    z-index: 1000;
    box-shadow: 0 2px 2px var(--navBar-shadow);
    align-items: center;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 2001;
}

.nav-logged-in {
    align-self: self-end;
}

.nav-btn {
    background-color: var(--nav-btn);
    font-size: large;
    color: var(--white);
    border: none;
    border-radius: 999px;
    padding: 0.5rem 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.nav-btn:hover {
    background-color: var(--nav-btn-hvr);
    transform: scale(1.05);
}

.logo-img {
    width: 120px;
    height: auto;
}

/***************************************************************/
/************************* NavBar Menu *************************/
.avatar-menu {
    position: relative;
    cursor: pointer;
    display: flex;
    align-items: center;
}

.avatar-img {
    width: 80px;
    height: 80px;
    margin-left: auto;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 2px solid var(--border-white);
    border-radius: 50%;
    object-fit: cover;
}

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

/******************* Dropdown Menu *****************/
.dropdown-menu {
    position: absolute;
    top: 100%;
    transform: translateX(-50%);
    background-color: var(--white);
    border: 1px solid var(--submit-grey);
    border-radius: 6px;
    box-shadow: 0 6px 16px var(--navMenu-shadow);
    flex-direction: column;
    width: 200px;
    z-index: 10000;
    overflow: hidden;
    display: none;
}

.avatar-menu:hover .dropdown-menu {
    display: flex;
}

/********** Dropdown Header (username) **********/
.dropdown-header {
    background-color: var(--body-bg2);
    color: var(--grey-mr);
    font-weight: 500;
    padding: 12px;
    text-align: center;
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
}

/**************** Dropdown Links ****************/
.dropdown-menu li {
    list-style: none;
}

.dropdown-menu a, .profile-link {
    text-decoration: none;
    color: var(--content-grey);
    font-size: 0.875rem;
    padding: 12px 16px;
    font-family: 'Inter', sans-serif;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background-color 0.15s ease, color 0.15s ease;
}

.dropdown-menu a:hover, .profile-link:hover {
    background-color: var(--nav-menu-hvr);
    color: var(--dark-grey);
}

.dropdown-menu a i, .profile-link {
    font-size: 1rem;
    color: var(--content-grey);
    transition: color 0.15s ease;
}

.dropdown-menu a:hover i, .profile-link:hover{
    color: var(--grey-mr);
}

/* ------------- Floating "+" Button ------------- */
.fab, .back-to-top{
    position: fixed;
    bottom: 20px;
    right: 75px;
    background-color: var(--nav-btn);
    color: var(--white);
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    box-shadow: 3px 3px 3px var(--notif-shadow);
    transition: transform 0.3s ease, background-color 0.3s ease;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

.fab {
    right: 20px;
}

.back-to-top {
    font-size: 12px;
    color: white; 
}

.fab:hover, .back-to-top:hover {
    animation: rotateTransition 0.3s ease-in-out;
    background-color: var(--submit-btn);
    transform: scale(1.1);
}

@keyframes rotateTransition {
    0% { transform: rotate(0deg) scale(1.1); }
    100% { transform: rotate(360deg) scale(1.1); }
}

/* Responsive */
@media (max-width: 500px) {
    .navbar {
        flex-wrap: wrap;
        padding: 0.5rem 1rem;
    }

    .nav-btn {
        padding: 0.3rem 0.7rem;
        font-size: 1.2rem;
    }

    .avatar-img {
        width: 60px;
        height: 60px;
    }

    .dropdown-menu {
        width: 150px;
        transform: translateX(-60%);
    }

    .dropdown-menu a, .profile-link {
        font-size: 0.8rem;
    }

    .back-to-top {
        right: 55px;
        width: 30px;
        height: 30px;
        font-size: 10px;
    }

    .fab {
        width: 30px;
        height: 30px;
        font-size: 20px;
    }
}

@media (max-width: 280px) {
    .logo-img {
        width: 90px;
    }
}