* {
    box-sizing: border-box;
    margin: 0;
}

main {
    max-width: 1400px;
    width: 90%;
    margin: 50px auto 50px auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

h2 {
    text-align: center;
    font-size: 50px;
    background: linear-gradient(to bottom, #4d6799, #31466b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
    margin: 0;
    user-select: none;
}

h3{
    text-align: left;
    font-size: 35px;
    background: linear-gradient(to bottom, #f5daa4, #dec184);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
    margin: 0 0 20px 0;
    user-select: none;
}

.staff-container {
    margin: 50px 0;
    width: 100%;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}


.subject-dropdown {
    background-color: #fffbf7;
    border: 2px solid #ddd7d2;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    overflow: hidden;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    margin-bottom: 10px;
}

.subject-dropdown.is-expanded {
    border-color: #dec184;
}

.subject-dropdown summary {
    padding: 18px 25px;
    font-size: 25px;
    font-weight: bold;
    background: linear-gradient(to bottom, #4d6799, #31466b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
}

.subject-dropdown summary::-webkit-details-marker {
    display: none;
}

.subject-dropdown summary::after {
    content: '+';
    color: #dec184;
    font-size: 25px;
    line-height: 1;
    font-weight: normal;
    transition: transform 0.3s ease;
}

.subject-dropdown.is-expanded summary::after {
    content: '\2212';
}

.teachers-list {
    margin: 0;
    padding: 0 25px;
    list-style-type: none;
    border-top: 1px solid transparent;
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, opacity 0.3s ease-out, padding 0.3s ease-out;
}

.subject-dropdown.is-expanded .teachers-list {
    max-height: 400px;
    opacity: 1;
    padding: 15px 25px 20px 25px;
    border-top: 1px solid #ddd7d2;
}

.teachers-list li {
    color: #746d68;
    font-size: 22px;
    padding: 8px 0;
    position: relative;
    padding-left: 20px;
}

.teachers-list li::before {
    content: "\2022";
    color: #dec184;
    font-size: 22px;
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    line-height: 1;
}

.link-container{
    width: 100%;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px 30px ;
    margin-bottom: 50px;
}

.link-container:last-child{
    margin-bottom: 0;
}

.link{
    text-decoration: none;
    width: 100%;
    background-color: #fffbf7;
    border: 2px solid #ddd7d2;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    overflow: hidden;
    transition: border-color 0.3s ease, background-color 0.3s ease, color 0.3s ease, transform 0.3s ease;
    padding: 18px 25px;
    font-size: 25px;
    font-weight: bold;
    color: #3B537F;
    text-align: center;
    height: fit-content;
    margin: auto 0;
}

.link:hover{
    color: #fffbf7;
    background-color: #3B537F;
    border-color: #3B537F;
    transform: translateY(-5px);
}

@media screen and (max-width: 1024px) {
    h2{
        font-size: 40px;
    }
    h3{
        font-size: 28px;
    }
    .staff-container {
        gap: 30px;
    }
    .subject-dropdown summary, .subject-dropdown summary::after, .link {
        font-size: 20px;
    }
    .teachers-list li, .teachers-list li::before {
        font-size: 18px;
    }
}

@media screen and (max-width: 768px) {
    .staff-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .link-container{
        grid-template-columns: repeat(1, 1fr);
        gap: 10px
    }
}

@media screen and (max-width: 480px) {
    h2{
        font-size: 32px;
    }
    h3{
        font-size: 23px;
    }
    .subject-dropdown summary, .subject-dropdown summary::after,.teachers-list li, .teachers-list li::before,.link {
        font-size: 16px;
    }
    .teachers-list li{
        padding-left: 15px;
    }
}