:root {
    --primary: #004a99;
    --dark: #002d62;
    --accent: #ffcc00;
    --light-bg: #f8fafc;
    --text: #1e293b;
    --success: #22c55e;
}

* { box-sizing: border-box; }

body { 
    font-family: 'Inter', sans-serif; /* Recomendo importar a Inter do Google Fonts */
    margin: 0; 
    color: var(--text);
    line-height: 1.6;
    padding-top: 70px;
}

header {
    position: fixed;
    top: 0; width: 100%; height: 70px;
    background: white;
    display: flex; align-items: center;
    padding: 0 5%;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    z-index: 1000;
}

.logo {
    font-size: 1.5rem; font-weight: 800;
    color: var(--primary);
    letter-spacing: -1px;
}

.container { max-width: 1000px; margin: 0 auto; padding: 0 20px; }

/* Section Problemas */
.section-problemas { padding: 80px 0; background: white; text-align: center; }
.grid-problemas { 
    display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); 
    gap: 30px; margin-top: 40px; 
}
.item-problema { padding: 20px; border-bottom: 3px solid var(--light-bg); }
.item-problema span { font-size: 2rem; }

/* Section IA (Destaque Tecnológico) */
.section-ia { 
    padding: 80px 0; background: var(--dark); color: white; text-align: center;
    border-radius: 40px 40px 0 0;
}
.ia-badge { 
    display: inline-block; background: var(--primary); padding: 5px 15px; 
    border-radius: 20px; font-size: 0.8rem; margin-bottom: 20px;
}
.ia-features { 
    display: flex; flex-wrap: wrap; justify-content: center; gap: 20px; margin-top: 30px;
}
.feature { background: rgba(255,255,255,0.1); padding: 15px 25px; border-radius: 10px; }

/* Section Form */
.section-form { padding: 80px 0; background: var(--light-bg); }
.contato-form { 
    max-width: 500px; margin: 40px auto; background: white; 
    padding: 40px; border-radius: 20px; box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1);
}
.form-group { margin-bottom: 20px; text-align: left; }
.form-group label { display: block; font-weight: 600; margin-bottom: 8px; }
.form-group input { 
    width: 100%; padding: 12px; border: 1px solid #e2e8f0; border-radius: 8px;
    outline-color: var(--primary);
}

/* Container do checkbox */
.checkbox-group {
    margin: 25px 0; /* Espaçamento extra em volta */
}

.checkbox-label {
    display: flex;
    align-items: center; /* Alinha verticalmente no centro */
    gap: 12px; /* Espaço entre o quadradinho e o texto */
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text);
    user-select: none; /* Impede selecionar o texto ao clicar rápido */
}

/* Estilizando o quadrado do checkbox */
.checkbox-label input[type="checkbox"] {
    /* Remove a aparência padrão chata do navegador */
    appearance: none;
    -webkit-appearance: none;
    
    /* Tamanho maior */
    width: 22px;
    height: 22px;
    
    border: 2px solid var(--primary);
    border-radius: 6px;
    background-color: white;
    cursor: pointer;
    position: relative;
    transition: all 0.2s ease;
    
    /* Importante para não amassar em telas pequenas */
    flex-shrink: 0; 
}

/* Efeito quando marcado */
.checkbox-label input[type="checkbox"]:checked {
    background-color: var(--primary);
}

/* O check (v) branco dentro da caixa */
.checkbox-label input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    color: white;
    font-size: 16px;
    font-weight: bold;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -55%);
}

/* Feedback visual ao passar o mouse */
.checkbox-label:hover input[type="checkbox"] {
    border-color: var(--dark);
    background-color: #f0f7ff;
}

.btn-submit { 
    width: 100%; background: var(--success); color: white; padding: 18px; 
    border: none; border-radius: 8px; font-weight: bold; cursor: pointer;
    font-size: 1.1rem; transition: transform 0.2s;
}
.btn-submit:hover { transform: scale(1.02); }
.btn-submit:disabled {
    background: #94a3b8 !important;
    cursor: not-allowed;
    transform: none !important;
}

.row-tel {
    display: flex;
    gap: 15px;
}
.ddd-box { flex: 0 0 70px; } /* Largura fixa para o DDD */
.num-box { flex: 1; }       /* Número ocupa o restante */

.form-group input:invalid:focus {
    border-color: #d9534f; /* Feedback visual para erro */
}

/* Estilização da Simulação de IA via JS */
.progress-container-ia {
    margin-top: 20px;
    background: #e2e8f0;
    border-radius: 10px;
    height: 10px;
    overflow: hidden;
}

.progress-bar-ia {
    background: var(--primary);
    width: 0%;
    height: 100%;
    transition: width 0.4s ease;
}

.status-text-ia {
    font-size: 0.85rem;
    color: var(--primary);
    margin-top: 10px;
    font-weight: 600;
    text-align: center;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

footer { text-align: center; padding: 40px; font-size: 0.9rem; color: #64748b; }