/* Importação de fonte leve (Inter é otimizada para leitura digital) */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;800&display=swap');

:root {
    --primary: #0d47a1;    /* Azul Engenharia */
    --accent: #ffc107;     /* Amarelo NR10/Aviso */
    --dark: #1a1a1a;
    --light: #f8f9fa;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Inter', sans-serif;
    scroll-behavior: smooth;
    color: #333;
    line-height: 1.6;
}

/* Hero Section com Overlay Otimizado */
.hero-section {
    background: linear-gradient(45deg, rgba(13, 71, 161, 0.9), rgba(0, 0, 0, 0.7)), 
                url('https://images.unsplash.com/photo-1581092160562-40aa08e78837?auto=format&fit=crop&q=60&w=1200');
    background-size: cover;
    background-position: center;
    background-attachment: fixed; /* Efeito Parallax suave */
    min-height: 85vh;
}

/* Estilização da Foto de Perfil */
.profile-img {
    width: 280px;
    height: 280px;
    object-fit: cover;
    border-radius: 20px;
    border: 5px solid var(--accent);
    box-shadow: 0 15px 35px rgba(0,0,0,0.2);
    transition: var(--transition);
}

.profile-img:hover {
    transform: translateY(-10px);
}

/* Cards de Cursos */
.card {
    border: none;
    border-radius: 12px;
    transition: var(--transition);
    background: #fff;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.1) !important;
}

/* Botão WhatsApp Fluido */
.btn-whatsapp-fixo {
    position: fixed;
    width: 55px;
    height: 55px;
    bottom: 30px;
    right: 30px;
    background-color: #25d366;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    box-shadow: 0 6px 15px rgba(37, 211, 102, 0.4);
    z-index: 1000;
    text-decoration: none;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7); }
    70% { transform: scale(1.05); box-shadow: 0 0 0 10px rgba(37, 211, 102, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

/* FAQ Accordion */
.accordion-button:not(.collapsed) {
    background-color: var(--light);
    color: var(--primary);
    box-shadow: none;
}

.accordion-button:focus {
    box-shadow: none;
    border-color: rgba(0,0,0,.125);
}

/* Responsividade */
@media (max-width: 768px) {
    .hero-section { min-height: 60vh; }
    .profile-img { width: 200px; height: 200px; }
}