/* Reset dasar */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Poppins", sans-serif;
}

body {
    background: #f7f7f7;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    background: #fff;
    width: 360px;
    border: 3px solid #000;
    border-radius: 40px;
    overflow: hidden;
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    display: flex;
    align-items: center;
    padding: 15px;
    border-bottom: 2px solid #000;
    background: linear-gradient(135deg, #2c3e50, #3498db);
    color: #fff;
}

    header .logo img {
        border-radius: 50%;
        border: 2px solid #fff;
        margin-right: 10px;
    }

    header .title h1 {
        font-size: 16px;
        font-weight: bold;
    }

    header .title p {
        font-size: 14px;
    }

/* Navigasi */
nav {
    border-bottom: 2px solid #000;
    background: #f1f1f1;
}

    nav ul {
        list-style: none;
        display: flex;
        justify-content: flex-end;
        padding: 5px 10px;
    }

        nav ul li {
            margin-left: 8px;
        }

            nav ul li a {
                text-decoration: none;
                padding: 5px 10px;
                border: 1px solid #000;
                border-radius: 5px;
                background: #fff;
                color: #333;
                font-size: 13px;
                transition: all 0.3s;
            }

                nav ul li a:hover {
                    background: #3498db;
                    color: #fff;
                    border-color: #3498db;
                }

/* Konten utama */
main {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 30px 15px;
    font-size: 16px;
    font-weight: 500;
}

/* Footer */
footer {
    border-top: 2px solid #000;
    text-align: center;
    padding: 12px;
    font-size: 14px;
    background: #f9f9f9;
    color: #555;
    border-bottom-left-radius: 40px;
    border-bottom-right-radius: 40px;
}