/* 1. IMPORTAÇÃO E VARIÁVEIS */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;800&display=swap');

:root {
    --primary-color: #000000;
    --bg-color: #ffffff;
    --text-color: #000000;
    --border-color: #000000;
    --font-main: 'Inter', -apple-system, system-ui, sans-serif;
    --transition: all 0.2s ease-in-out;
    --light-gray: #f0f0f0;
    --medium-gray: #999;
}

/* 2. RESET E BASE */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-main);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

/* 3. CONTAINER E ESTRUTURA */
#multiStepForm {
    background: #ffffff;
    max-width: 500px; /* Leve aumento para comportar o grid 2x2 confortavelmente */
    width: 100%;
    padding: 40px;
    border: 1px solid var(--border-color);
}

.step {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.step.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 4. BARRA DE PROGRESSO E INFO */
.progress-bar {
    width: 100%;
    height: 2px;
    background: var(--light-gray);
    margin-bottom: 40px;
}

.progress {
    width: 33.3%;
    height: 100%;
    background: var(--primary-color);
    transition: var(--transition);
}

.step-info {
    font-size: 0.65rem;
    font-weight: 800;
    letter-spacing: 0.15em;
    color: var(--medium-gray);
    margin-bottom: 8px;
    text-transform: uppercase;
}

h3 {
    margin-bottom: 35px;
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    text-transform: uppercase;
    line-height: 1.1;
}

/* 5. FORMULÁRIO E INPUTS */
label {
    display: block;
    margin-top: 25px;
    margin-bottom: 10px;
    font-size: 0.7rem;
    font-weight: 800;
    text-transform: uppercase; /* Mantém o rótulo em maiúsculo */
    letter-spacing: 0.1em;
}

input[type="text"],
input[type="email"],
select,
textarea {
    font-family: var(--font-main);
    width: 100%;
    padding: 12px 0;
    border: none;
    border-bottom: 1px solid var(--border-color);
    font-size: 1rem;
    background: transparent;
    border-radius: 0;
    transition: var(--transition);
}

input::placeholder {
    color: #ccc;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-bottom-width: 2px;
}

/* 6. GRID DE OPÇÕES (CARDS) */
.options-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-top: 10px;
}

.option-card {
    cursor: pointer;
}

.option-card input {
    display: none; /* Esconde o radio original */
}

.card-box {
    border: 1px solid #eee;
    padding: 20px;
    height: 100%;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.radio-circle {
    width: 18px;
    height: 18px;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fff;
}

.card-title {
    display: block;
    font-weight: 800;
    font-size: 0.75rem;
    margin-bottom: 8px;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.card-box p {
    font-size: 0.65rem;
    color: #666;
    line-height: 1.4;
    text-transform: uppercase;
}

/* 7. ESTADOS DOS CARDS */
.option-card:hover .card-box {
    border-color: var(--medium-gray);
}

.option-card input:checked + .card-box {
    border-color: var(--primary-color);
    background-color: #fafafa;
}

/* Ponto interno do rádio quando selecionado */
.option-card input:checked + .card-box .radio-circle::after {
    content: '';
    width: 10px;
    height: 10px;
    background: var(--primary-color);
    border-radius: 50%;
}

/* 8. BOTÕES */
.btn-group {
    margin-top: 50px;
    display: flex;
    gap: 12px;
}

button {
    font-family: var(--font-main);
    flex: 1;
    padding: 16px;
    border: 1px solid var(--border-color);
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: var(--transition);
    background: transparent;
}

.next-btn, button[type="submit"] {
    background-color: var(--primary-color);
    color: white;
}

.prev-btn {
    background-color: white;
    color: black;
}

button:hover {
    background-color: #222;
    color: white;
    transform: translateY(-1px);
}

.prev-btn:hover {
    background-color: #000;
    color: #fff;
}

/* 9. RESPONSIVIDADE */
@media (max-width: 480px) {
    #multiStepForm {
        padding: 25px;
    }
    .options-grid {
        grid-template-columns: 1fr;
    }
}