/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #0ea5e9;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --dark: #1e293b;
    --light: #f8fafc;
    --gray: #64748b;
    --shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.15);
    --shadow-hover: 0 20px 50px -12px rgba(0, 0, 0, 0.25);
    --radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Poppins', 'Segoe UI', system-ui, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    color: var(--dark);
    line-height: 1.6;
}

/* ===== WRAPPER & HEADER ===== */
.main-wrapper {
    width: 100%;
    max-width: 520px;
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.header {
    text-align: center;
    margin-bottom: 24px;
    color: white;
}

.header h1 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 8px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.header p {
    font-size: 0.95rem;
    opacity: 0.9;
    font-weight: 300;
}

/* ===== CARD PRINCIPAL ===== */
.card {
    background: white;
    border-radius: var(--radius);
    padding: 32px 28px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

/* ===== FORMULÁRIO ===== */
#formVida {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.input-group label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 6px;
}

.input-group label::before {
    content: "";
    width: 4px;
    height: 14px;
    background: var(--primary);
    border-radius: 2px;
    display: inline-block;
}

.input-group select,
.input-group input {
    width: 100%;
    padding: 14px 16px;
    font-size: 1rem;
    font-family: inherit;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    background: var(--light);
    color: var(--dark);
    transition: var(--transition);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
}

.input-group select:focus,
.input-group input:focus {
    outline: none;
    border-color: var(--primary);
    background-color: white;
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
}

.input-group input::placeholder {
    color: var(--gray);
    opacity: 0.7;
}

/* ===== LINHA COM DOIS CAMPOS ===== */
.input-group-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* ===== BOTÃO ===== */
.btn-primary {
    width: 100%;
    padding: 16px 24px;
    margin-top: 8px;
    font-size: 1.05rem;
    font-weight: 600;
    font-family: inherit;
    color: white;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.btn-primary::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.6);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* ===== RESULTADO ===== */
.resultado-box {
    margin-top: 28px;
    padding: 24px;
    background: linear-gradient(135deg, #f0f9ff 0%, #f5f3ff 100%);
    border-radius: 14px;
    border-left: 4px solid var(--primary);
    text-align: center;
    font-size: 1.1rem;
    color: var(--dark);
    display: none;
    animation: slideIn 0.4s ease-out;
}

.resultado-box.show {
    display: block;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.resultado-box strong {
    color: var(--primary-dark);
    font-size: 1.4rem;
    display: block;
    margin: 8px 0;
}

.resultado-box .highlight {
    color: var(--success);
    font-weight: 600;
    font-size: 1.3rem;
}

.resultado-box .warning {
    color: var(--warning);
}

.resultado-box .error {
    color: var(--danger);
}

/* ===== FOOTER ===== */
footer {
    text-align: center;
    margin-top: 24px;
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.85rem;
    font-weight: 300;
}

footer a {
    color: white;
    text-decoration: none;
    font-weight: 500;
}

footer a:hover {
    text-decoration: underline;
}

/* ===== RESPONSIVIDADE ===== */
@media (max-width: 480px) {
    .header h1 {
        font-size: 1.4rem;
    }
    
    .card {
        padding: 24px 20px;
        border-radius: 20px;
    }
    
    .input-group-row {
        grid-template-columns: 1fr;
        gap: 18px;
    }
    
    .btn-primary {
        padding: 14px 20px;
        font-size: 1rem;
    }
    
    .resultado-box {
        padding: 20px 16px;
        font-size: 1rem;
    }
    
    .resultado-box strong {
        font-size: 1.25rem;
    }
}

/* ===== EFEITOS DE FOCO E VALIDAÇÃO ===== */
.input-group input:invalid:not(:placeholder-shown),
.input-group select:invalid:not(:placeholder-shown) {
    border-color: var(--danger);
}

.input-group input:valid:not(:placeholder-shown),
.input-group select:valid:not(:placeholder-shown) {
    border-color: var(--success);
}

/* ===== PLACEHOLDER ANIMADO PARA SELECT ===== */
select option:disabled {
    color: var(--gray);
    font-style: italic;
}

/* ===== ADIÇÕES AO CSS ANTERIOR ===== */

.required {
    color: var(--danger);
    font-weight: 600;
}

.optional {
    color: var(--gray);
    font-weight: 400;
    font-size: 0.85rem;
}

.help-text {
    display: block;
    font-size: 0.8rem;
    color: var(--gray);
    margin-top: 4px;
    font-style: italic;
}

/* Destaque para o estado selecionado no dropdown */
#estado option:checked {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    font-weight: 500;
}

/* Animação de carregamento no botão */
.btn-primary.loading {
    position: relative;
    pointer-events: none;
}

.btn-primary.loading::after {
    content: "";
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin: -10px 0 0 -10px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Resultado com destaque para valores */
.resultado-box .valor-principal {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-dark), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    margin: 12px 0;
}

.resultado-box .sub-info {
    font-size: 0.95rem;
    color: var(--gray);
    margin-top: 8px;
}

/* Badge do estado */
.estado-badge {
    display: inline-block;
    padding: 4px 12px;
    background: var(--light);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--primary-dark);
    margin: 8px 0;
}

/* Responsividade extra */
@media (max-width: 380px) {
    .header h1 { font-size: 1.3rem; }
    .card { padding: 20px 16px; }
    .btn-primary { font-size: 0.95rem; padding: 14px; }
    .resultado-box .valor-principal { font-size: 1.75rem; }
}