body {
    background: linear-gradient(135deg, #11998e, #38ef7d);
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.card {
    background-color: #ffffff;
    border-radius: 25px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    border: none;
    overflow: hidden;
}

h3 {
    color: #11998e;
    font-weight: 700;
}

.form-control {
    background-color: #f1f3f5;
    border: 2px solid transparent;
    border-radius: 12px;
    padding: 12px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.form-control:focus {
    background-color: #fff;
    border-color: #38ef7d;
    box-shadow: 0 0 10px rgba(56, 239, 125, 0.2);
}

.btn-primary {
    background: #11998e;
    border: none;
    border-radius: 12px;
    padding: 12px;
    font-weight: bold;
    transition: transform 0.2s;
}

.btn-primary:hover {
    background: #0e857b;
    transform: scale(1.02);
}

.btn-outline-secondary {
    border-radius: 12px;
    border: 2px solid #ced4da;
}

.btn-outline-secondary:hover {
    background-color: #e9ecef;
    color: #333;
}

.resultado-box {
    background-color: #212529;
    color: #fff;
    border-radius: 15px;
    padding: 20px;
    margin-top: 25px;
    box-shadow: inset 0 0 20px rgba(0,0,0,0.5);
}

.resultado-box p {
    color: #adb5bd;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.resultado-box h5, 
.resultado-box h2 {
    color: #38ef7d;
    text-shadow: 0 0 10px rgba(56, 239, 125, 0.4);
}

.border-end {
    border-right: 1px solid #495057 !important;
}