body {
    margin: 0;
    background-color: #ffffff;
    color: #222222;
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.6;
}

header, main, footer {
    max-width: 700px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

header {
    padding-top: 1.25rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid #dddddd;
}

header nav {
    display: flex;
    justify-content: center;
}

header ul {
    list-style: none;
    display: flex;
    gap: 2rem;
    margin: 0;
    padding: 0;
}

header a {
    color: #2f4b4a;
}

a:focus-visible {
    outline: 2px solid #2f4b4a;
    outline-offset: 2px;
}

main section {
    padding: 1rem 0;
}

#about-me {
    padding-bottom: 0;
}

#mata-kuliah {
    border-top: 2px solid #dddddd;
}

h1 {
    margin: 0.75rem 0 0.25rem;
    font-size: 1.8rem;
}

h2 {
    margin-top: 0;
    font-size: 1.3rem;
}

h3 {
    font-size: 1.05rem;
    margin-bottom: 0.5rem;
}

.peran {
    color: #555555;
    margin-top: 0;
}

.profil-header {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.profil-text {
    flex: 1 1 240px;
    min-width: 0;
}

.profil-text h1 {
    margin-top: 0;
}

.foto-profil {
    display: block;
    width: 140px;
    height: auto;
    border-radius: 4px;
    object-fit: cover;
    flex-shrink: 0;
}


.info-columns {
    display: flex;
    gap: 2.5rem;
    flex-wrap: wrap;
}

.info-column {
    flex: 1 1 220px;
}

dl {
    margin: 0 0 1.5rem;
}

dt {
    font-weight: bold;
    margin-top: 0.5rem;
}

dd {
    margin: 0 0 0.5rem;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    text-align: left;
    padding: 0.5rem;
    border-bottom: 1px solid #dddddd;
}

footer {
    padding-top: 2rem;
    padding-bottom: 2rem;
}

.kontak-icons {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.icon-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid #dddddd;
    color: #555555;
    text-decoration: none;
}

.icon-link svg {
    width: 18px;
    height: 18px;
}

.icon-link:hover,
.icon-link:focus-visible {
    color: #2f4b4a;
    border-color: #2f4b4a;
}

footer p {
    color: #555555;
    font-size: 0.9rem;
    margin: 0;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}