body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #0d47a1, #42a5f5);
    margin: 0;
    padding: 0;
    color: #000000;
}

.container {
    width: 90%;
    max-width: 900px;
    margin: 60px auto;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
    padding: 30px;
    text-align: center;
}

h1, h2 {
    letter-spacing: 1px;
    font-weight: 600;
    color: #fff;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 25px;
}

th, td {
    padding: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.2);
}

th {
    background: rgba(255,255,255,0.15);
    font-weight: 600;
}

tr:hover {
    background: rgba(255,255,255,0.1);
}

a {
    text-decoration: none;
}

.btn-tambah, .btn-edit, .btn-hapus, .btn-submit, .btn-back {
    display: inline-block;
    padding: 10px 18px;
    border-radius: 8px;
    margin: 5px;
    transition: 0.3s;
    font-weight: 500;
}

.btn-tambah {
    background: #2196f3;
    color: white;
}

.btn-edit {
    background: #00c853;
    color: white;
}

.btn-hapus {
    background: #e53935;
    color: white;
}

.btn-submit {
    background: #1976d2;
    color: white;
    width: 100%;
    border: none;
}

.btn-back {
    background: #546e7a;
    color: white;
    display: block;
    text-align: center;
    margin-top: 10px;
}

.btn-tambah:hover, .btn-edit:hover, .btn-hapus:hover, .btn-submit:hover, .btn-back:hover {
    opacity: 0.85;
}

.form-container {
    width: 90%;
    max-width: 400px;
    margin: 100px auto;
    background: rgba(255,255,255,0.1);
    padding: 25px;
    border-radius: 16px;
    backdrop-filter: blur(10px);
    text-align: center;
    box-shadow: 0 6px 15px rgba(0,0,0,0.3);
}

input {
    width: 100%;
    padding: 12px;
    margin: 8px 0;
    border-radius: 6px;
    border: none;
    outline: none;
    font-size: 14px;
}