/* Reset CSS */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    background-color: #f8fafc;
    color: #1e293b;
}

/* Header & Navigasi */
header {
    background-color: #0f172a;
    color: #ffffff;
    padding: 15px 20px;
}

.situs-nav {
    max-width: 950px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.situs-nav h2 {
    font-size: 20px;
    font-weight: 600;
}

nav a {
    color: #94a3b8;
    text-decoration: none;
    margin-left: 15px;
    font-weight: 500;
    transition: color 0.2s;
}

nav a:hover, nav a.active {
    color: #38bdf8;
    border-bottom: 2px solid #38bdf8;
}

/* Container Utama */
.konten-utama {
    max-width: 950px;
    margin: 30px auto;
    padding: 30px;
    background-color: #ffffff;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Gambar Responsif */
img {
    max-width: 100%;
    height: auto;
}

/* Hero Section (Beranda) */
.hero-wrapper {
    display: flex;
    align-items: center;
    gap: 30px;
}

.hero-text {
    flex: 1;
}

.hero-text h1 {
    color: #0f172a;
    margin-bottom: 10px;
}

.tombol-cta {
    display: inline-block;
    background-color: #0284c7;
    color: #ffffff;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 5px;
    margin-top: 15px;
    font-weight: 500;
}

.tombol-cta:hover {
    background-color: #0369a1;
}

/* Layout Biodata (CSS Grid) */
.layout-biodata {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 25px;
    margin-bottom: 25px;
}

/* Foto Profil Sesuai Syarat (Rasio 3:4 & max-width 200px) */
.foto-profil {
    width: 100%;
    max-width: 200px;
    aspect-ratio: 3 / 4;
    object-fit: cover;
    border-radius: 6px;
    border: 1px solid #cbd5e1;
}

/* Tabel Akademik */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

table th, table td {
    border: 1px solid #cbd5e1;
    padding: 10px;
    text-align: center;
}

table th {
    background-color: #f1f5f9;
    color: #0f172a;
}

/* Galeri Liburan (Flexbox Wajib) */
.galeri-flex {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
    align-items: stretch;
    gap: 15px;
    margin-top: 20px;
}

.kartu-foto {
    flex: 1 1 calc(33.333% - 15px);
    min-width: 240px;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    padding: 10px;
    background-color: #f8fafc;
    text-align: center;
}

.kartu-foto img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 4px;
}

.kartu-foto p {
    margin-top: 8px;
    font-size: 14px;
    color: #475569;
}

/* Form Kontak */
.form-kontak {
    display: flex;
    flex-direction: column;
    gap: 15px;
    max-width: 600px;
    margin-top: 15px;
}

.grup-input {
    display: flex;
    flex-direction: column;
}

.grup-input label {
    margin-bottom: 5px;
    font-weight: 600;
}

.grup-input input, .grup-input textarea {
    padding: 10px;
    border: 1px solid #cbd5e1;
    border-radius: 4px;
    font-size: 14px;
}

.btn-submit {
    background-color: #0284c7;
    color: white;
    padding: 10px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
}

.btn-submit:hover {
    background-color: #0369a1;
}

/* Footer */
footer {
    background-color: #0f172a;
    color: #94a3b8;
    text-align: center;
    padding: 20px;
    margin-top: 40px;
    font-size: 14px;
}

/* Responsif Mobile Layout */
@media (max-width: 768px) {
    .situs-nav {
        flex-direction: column;
        gap: 10px;
    }

    nav a {
        margin: 0 8px;
    }

    .hero-wrapper, .layout-biodata {
        flex-direction: column;
        grid-template-columns: 1fr;
        text-align: center;
    }

    .foto-profil {
        margin: 0 auto;
    }

    .kartu-foto {
        flex: 1 1 100%;
    }
}