.card {
    border-radius: 15px;
    border: none;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
}

.form-control, .form-select {
    border-radius: 10px;
    padding: 12px;
    border: 1px solid #e0e0e0;
}

.form-control:focus, .form-select:focus {
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.25);
    border-color: #667eea;
}

.btn-calculate {
    background: linear-gradient(45deg, #667eea, #764ba2);
    border: none;
    padding: 12px;
    border-radius: 10px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-calculate:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.result-card {
    transition: all 0.3s ease;
}

.result-card:hover {
    transform: translateY(-5px);
}

.bmi-value {
    font-size: 3.5rem;
    font-weight: bold;
    background: linear-gradient(45deg, #0f3bff, #2916f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo {
    width: 200px;
    height: auto;
    display: block;
    margin: 0 auto 2rem;
    border-radius: 15px;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

/* .gradient-custom {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
} */

#bmi-form {
    background-color: #f8f9fa;
    border-radius: 15px;
}

.form-label {
    font-weight: 600;
    color: #4a5568;
    margin-bottom: 0.5rem;
}