.pvc-calculator-container {
    max-width: 600px;
    margin: 30px auto;
    padding: 30px;
    background: #fff;
    border-radius: 15px;
    box-shadow: 0 5px 25px rgba(0,0,0,0.1);
    font-family: 'Poppins', sans-serif;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease; /* <-- TRANSIÇÃO ADICIONADA AQUI */
}

.pvc-calculator-container.fade-in {
    opacity: 1;
    transform: translateY(0);
}

.pvc-step {
    animation: fadeIn 0.5s ease-in;
}

.slide-in {
    animation: slideInRight 0.6s ease-out;
}

.pvc-form-group {
    margin-bottom: 20px;
}

.pvc-form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #34495e;
}

.pvc-form-group input,
.pvc-form-group select {
    width: 100%;
    padding: 12px;
    border: 2px solid #ecf0f1;
    border-radius: 8px;
    font-size: 16px;
    transition: border 0.3s, box-shadow 0.3s; /* <-- TRANSIÇÃO ADICIONADA */
}

.pvc-form-group input:focus,
.pvc-form-group select:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1); /* <-- DESTAQUE VISUAL */
}

.pvc-form-group label input[type="radio"] {
    width: auto;
    margin-right: 10px;
}

.pvc-btn {
    padding: 14px 28px;
    border: none;
    border-radius: 50px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    margin: 10px 5px;
    transition: all 0.3s ease; /* <-- TRANSIÇÃO MANTIDA */
    display: inline-block;
}

.pvc-btn-next {
    background: #27ae60;
    color: white;
}

.pvc-btn-prev {
    background: #e67e22;
    color: white;
}

.pvc-btn-calculate {
    background: #3498db;
    color: white;
    font-size: 18px;
    padding: 16px 32px;
}

.pvc-btn-reset {
    background: #e74c3c;
    color: white;
}

.pvc-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.pvc-result {
    text-align: center;
    padding: 20px;
}

.pvc-result-box {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px;
    border-radius: 15px;
    margin: 20px 0;
    text-align: left;
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.6s cubic-bezier(0.2, 0.8, 0.3, 1.2); /* <-- TRANSIÇÃO ADICIONADA */
    animation: bounceIn 1s forwards;
}

.pvc-result-box p {
    margin: 10px 0;
    font-size: 18px;
}

.pvc-result-box strong {
    display: inline-block;
    width: 220px;
}

/* KEYFRAMES - NÃO PRECISAM DE TRANSITION, POIS SÃO ANIMAÇÕES CSS PURAS */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes bounceIn {
    0% { transform: scale(0.3); opacity: 0; }
    50% { transform: scale(1.05); opacity: 1; }
    70% { transform: scale(0.9); }
    100% { transform: scale(1); }
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.pulse {
    animation: pulse 1.5s infinite;
}