:root {
    --primary-blue: #0D2B4F; /* Biru tua dari website */
    --secondary-gold: #D4AF37; /* Emas sebagai aksen */
    --light-gray: #f4f7f6;
    --dark-gray: #333;
    --text-color: #4A4A4A;
    --border-color: #dcdcdc;
    --success-bg: #d4edda;
    --success-border: #c3e6cb;
    --success-text: #155724;
    --danger-bg: #f8d7da;
    --danger-border: #f5c6cb;
    --danger-text: #721c24;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--light-gray);
    color: var(--text-color);
    margin: 0;
    padding: 2rem 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.form-container {
    background-color: #fff;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 800px;
    box-sizing: border-box;
}

.form-header {
    text-align: center;
    margin-bottom: 2rem;
}

.form-header .logo {
    max-width: 200px;
    margin-bottom: 1rem;
}

.form-header h1 {
    color: var(--primary-blue);
    font-size: 2rem;
    font-weight: 700;
    margin: 0;
}

.form-header p {
    font-size: 1rem;
    color: #666;
    margin-top: 0.5rem;
}

form {
    display: flex;
    flex-direction: column;
}

fieldset {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

legend {
    color: var(--primary-blue);
    font-weight: 600;
    font-size: 1.2rem;
    padding: 0 0.5rem;
    margin-left: 1rem;
}

.form-group {
    margin-bottom: 1.25rem;
    display: flex;
    flex-direction: column;
}

.form-row {
    display: flex;
    gap: 1.5rem;
}

.form-row .form-group {
    flex: 1;
}

label {
    font-weight: 500;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="date"],
input[type="url"],
select,
textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    font-family: 'Poppins', sans-serif;
    box-sizing: border-box;
    transition: border-color 0.3s, box-shadow 0.3s;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(13, 43, 79, 0.1);
}

.checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    background-color: var(--light-gray);
    padding: 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s;
    font-weight: 400;
}

.checkbox-group label:hover {
    background-color: #e9ecef;
}

.checkbox-group input[type="checkbox"] {
    margin-right: 0.75rem;
    width: 1.2em;
    height: 1.2em;
    accent-color: var(--primary-blue);
}

.agreement {
    flex-direction: row;
    align-items: center;
    font-size: 0.9rem;
}

.agreement input[type="checkbox"] {
    margin-right: 0.75rem;
}

.submit-btn {
    background: linear-gradient(90deg, var(--secondary-gold), #e6c25c);
    color: var(--primary-blue);
    font-weight: 600;
    font-size: 1.1rem;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 6px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    align-self: center;
    margin-top: 1rem;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.4);
}

/* Alert styles */
.alert {
    padding: 1rem;
    margin-bottom: 1rem;
    border: 1px solid transparent;
    border-radius: .25rem;
    text-align: center;
}

.alert-success {
    color: var(--success-text);
    background-color: var(--success-bg);
    border-color: var(--success-border);
}

.alert-danger {
    color: var(--danger-text);
    background-color: var(--danger-bg);
    border-color: var(--danger-border);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .form-container {
        padding: 1.5rem;
    }
    .form-row {
        flex-direction: column;
        gap: 0;
    }
    .form-header h1 {
        font-size: 1.5rem;
    }
}