* {
    box-sizing: border-box;
    font-family: 'Montserrat', sans-serif;
}

body {
    margin: 0;
}

:root{
    --header-height: 101px;
}

header{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    min-height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 60px;
    background: white;
    border-bottom: 1px solid #e5e5e5;
    z-index: 1000;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 100px;
}

nav {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 30px;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 35px;
    margin: 0;
    padding: 0;
}

nav ul li span,
nav ul li button,
nav ul li a {
    text-decoration: none;
    color: #464646;
    font-size: 18px;
    font-weight: 500;
    position: relative;
}

nav ul li a::after,
nav ul li span::after,
nav ul li button::after {
    content: "";
    position: absolute;
    width: 0;
    height: 2px;
    background: #0000ff;
    left: 0;
    bottom: -6px;
    transition: width 0.3s ease;
}

nav ul li a:hover::after,
nav ul li span:hover::after,
nav ul li button:hover::after {
    width: 100%;
}

.has-submenu {
    position: relative;
}

.submenu {
    position: absolute;
    top: 100%;
    left: 0;
    background: #fff;
    padding: 20px 30px;
    display: flex;
    gap: 40px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 1000;
}

.has-submenu:hover .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.submenu ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.submenu a {
    font-size: 16px;
    white-space: nowrap;
    color: #464646;
}

.menu-toggle {
    display: none;
    font-size: 28px;
    cursor: pointer;
}

.submenu-toggle {
    background: none;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    margin-left: 5px; 
    transition: transform 0.3s ease;
}

.has-submenu.active .submenu-toggle svg {
    transform: rotate(180deg);
}

.submenu-toggle svg {
    display: block;
    transition: transform 0.3s ease;
}

@media (min-width: 1025px) {
    .has-submenu:hover .submenu-toggle svg {
        transform: rotate(180deg);
    }
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.header-icons {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 35px;
    height: 35px;
    transition: transform 0.2s ease;
}

.header-icons a:hover {
    transform: scale(1.1);
}

.header-icons img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 20%;
}

.btn-inscribete {
    position: relative;
    overflow: hidden;
    color: #fff;
    font-weight: 700;
    font-size: 16px;
    text-decoration: none;
    padding: 12px 28px;
    border-radius: 30px;
    display: inline-block;
    z-index: 1;
}

.btn-inscribete::before,
.btn-inscribete::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    transition: opacity 1.5s ease;
    z-index: -1;
}

.btn-inscribete::before {
    background: linear-gradient(135deg, #0000ff, #32dbfd);
    opacity: 1;
}

.btn-inscribete::after {
    background: linear-gradient(135deg, #32dbfd, #0000ff);
    opacity: 0;
}

.btn-inscribete:hover::before {
    opacity: 0;
}

.btn-inscribete:hover::after {
    opacity: 1;
}

/* ============================== RESPONSIVE ============================== */
@media (max-width: 1024px) {

    .menu-toggle {
        display: block;
    }

    nav {
        position: fixed;
        top: 0;
        left: -100%;
        width: 300px;
        height: 100vh;
        background: #fff;
        padding: 100px 25px;
        transition: left 0.3s ease;
        box-shadow: 5px 0 20px rgba(0,0,0,0.15);
        z-index: 1001;
        overflow-y: auto;
        flex-direction: column;
        align-items: flex-start;
        justify-content: flex-start;
    }

    nav.active {
        left: 0;
    }

    nav ul {
        flex-direction: column;
        gap: 20px;
    }

    .has-submenu .submenu {
        display: none;
        flex-direction: column;
        padding-left: 15px;
        position: static;
        box-shadow: none;
    }

    .has-submenu.active .submenu {
        display: flex !important;
    }

    nav ul li span,
    nav ul li button,
    .submenu a {
        color: #464646;
        font-size: 16px;
    }

    .header-actions {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
        margin-top: 30px;
        width: 100%;
        border-top: 1px solid #e5e5e5;
        padding-top: 20px;
    }

    .header-icons {
        gap: 15px;
    }

    .btn-inscribete {
        width: 100%;
        text-align: center;
    }
}



@media (max-width: 1024px){

    :root{
        --header-height: 90px;
    }

    .logo img {
        height: 60px;
    }

}

@media (max-width: 576px){

    :root{
        --header-height: 80px;
    }

    header{
        padding: 10px 20px;
    }

    .logo img{
        height: 55px;
    }

}