:root {
    --eco-green: #2ecc71;
    --eco-dark-green: #27ae60;
    --eco-bg: #f8f9fa;
    --eco-card-bg: #ffffff;
    --text-dark: #2c3e50;
    --text-muted: #7f8c8d;
}

body {
    background-color: var(--eco-bg);
    color: var(--text-dark);
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    font-size: 15px;
}

.card-eco {
    background: var(--eco-card-bg);
    border: none;
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.04);
}

.btn-eco {
    background-color: var(--eco-green);
    color: #ffffff;
    border: none;
    border-radius: 12px;
    padding: 12px 20px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-eco:hover, .btn-eco:focus {
    background-color: var(--eco-dark-green);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(46, 204, 113, 0.3);
}

.form-control-eco {
    border-radius: 12px;
    padding: 12px 16px;
    border: 1px solid #e2e8f0;
    background-color: #fcfdfd;
}

.form-control-eco:focus {
    border-color: var(--eco-green);
    box-shadow: 0 0 0 3px rgba(46, 204, 113, 0.15);
}

/* Responsivitas Antarmuka Seluler */
@media (max-width: 576px) {
    .card-eco {
        border-radius: 12px;
    }
    .btn-eco {
        padding: 14px 20px; /* Tombol lebih besar di HP agar mudah ditekan ibu-ibu */
    }
}