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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-image: url(images/wallhaven-e89l8k.jpg);
    background-size: cover;
    background-attachment: fixed;
    background-position: center;
    min-height: 100vh;
    padding: 20px 0;
}

#wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

#header {
    background-color: rgba(0, 0, 0, 0.5);
    padding: 20px 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 15px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
    margin-bottom: 30px;
}

#header img {
    width: 55px;
    height: 55px;
    background: white;
    padding: 5px;
    object-fit: contain;
}

#menu-utama {
    list-style: none;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

#menu-utama a {
    color: white;
    text-decoration: none;
    padding: 10px 22px;
    background-color: rgba(0, 0, 0, 0.5);
    font-weight: 500;
    transition: background 0.3s, transform 0.3s;
    display: block;
}

#menu-utama a:hover {
    background: rgba(255,255,255,0.25);
    transform: translateY(-2px);
}

#header input[type="text"] {
    padding: 10px 20px;
    border: none;
    width: 240px;
    max-width: 100%;
    font-size: 14px;
    background: rgba(255, 255, 255, 0.9);
    transition: width 0.3s, box-shadow 0.3s;
}

#header input[type="text"]:focus {
    outline: none;
    width: 270px;
    box-shadow: 0 0 0 3px rgba(255,255,255,0.3);
}

#content-area {
    display: flex;
    gap: 25px;
    align-items: flex-start;
}

#daftar-artikel {
    flex: 1;
    min-width: 0;
}

.artikel {
    background-color: rgba(255, 255, 255, 0.8);
    overflow: hidden;
    margin-bottom: 25px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.artikel:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 45px rgba(0,0,0,0.15);
}

.artikel img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    display: block;
}

.artikel-content {
    padding: 25px 30px;
}

.artikel h2 {
    color: #36454f;
    font-size: 22px;
    margin-bottom: 10px;
}

.artikel-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 12px;
}

.artikel-meta b {
    color: #777;
    font-size: 13px;
    font-weight: 500;
}

.artikel p {
    color: #555;
    line-height: 1.8;
    margin-bottom: 18px;
}

.artikel a {
    display: inline-block;
    background-color: #36454f;
    color: white;
    text-decoration: none;
    padding: 10px 26px;
    font-weight: 500;
    transition: transform 0.3s, box-shadow 0.3s;
}

.artikel a:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

#sidebar {
    width: 300px;
    flex-shrink: 0;
    background-color: rgba(255, 255, 255, 0.8);
    padding: 28px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    position: sticky;
    top: 20px;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
}

#sidebar h2 {
    color: #000000;
    font-size: 20px;
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 3px solid #000000;
}

#sidebar p {
    color: #555;
    line-height: 1.8;
    font-size: 14px;
}

#footer {
    background-color: #36454f;
    padding: 22px;
    text-align: center;
    margin-top: 30px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

#footer p {
    color: white;
    font-size: 14px;
}

@media (max-width: 900px) {
    #content-area {
        flex-direction: column;
    }
    #sidebar {
        width: 100%;
        position: static;
        max-height: none;
        overflow-y: visible;
    }
    #header {
        flex-direction: column;
        text-align: center;
    }
    #header input[type="text"] {
        width: 100%;
    }
    #header input[type="text"]:focus {
        width: 100%;
    }
}

@media (max-width: 600px) {
    #wrapper {
        padding: 0 12px;
    }
    #menu-utama {
        flex-direction: column;
        width: 100%;
    }
    #menu-utama a {
        text-align: center;
    }
    .artikel-content {
        padding: 18px;
    }
    .artikel h2 {
        font-size: 18px;
    }
}