* { 
    margin: 0; 
    padding: 0; 
    box-sizing: border-box; 
    text-decoration: none;
}

:root {
    --azul-petroleo: #033683;
    --azul-claro: #064db8;
    --azul: #2e87e0;
    --cinza-escuro: #1E272E;
    --cinza-claro: #F5F6FA; 
    --branco: #F8F9FA;
    --sombra: 0 10px 30px rgba(0,0,0,0.08);
    --gradienteAzulBranco: linear-gradient(135deg, #F8F9FA 0%, #033683 100%);
}

html { 
    scroll-behavior: smooth; 
}

body { 
    font-family: 'Arial', sans-serif; 
    color: var(--cinza-escuro); 
    line-height: 1.7; 
    background: var(--gradienteAzulBranco);
    background-attachment: fixed;
    min-height: 100vh;
}

.container { 
    max-width: 1400px; 
    margin: 0 auto; 
    padding: 0 24px; 
}

h1, h2, h3, h4 { 
    font-weight: 700; 
    color: var(--azul); 
}

h1 { 
    font-size: 3.2rem; 
    line-height: 1.2; 
}

h2 { 
    font-size: 2.5rem; 
    margin-bottom: 16px; 
}

h3 { 
    font-size: 1.5rem; 
}

p { 
    margin-bottom: 16px; 
    color: #555; 
    text-align: justify;
}

header { 
    position: fixed; 
    width: 100%; 
    top: 0; 
    z-index: 1000; 
    background: rgba(255,255,255,0.95); 
    backdrop-filter: blur(10px); 
    box-shadow: 0 2px 20px rgba(0,0,0,0.05); 
}

nav { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    padding: 20px 0; 
}

.logo { 
    font-size: 1.5rem; 
    font-weight: 700; 
    color: var(--azul-petroleo); 
}

.logo span { 
    color: var(--azul); 
    font-weight: 500; 
}

.nav-links { 
    display: flex; 
    list-style: none; 
    gap: 32px; 
}

.nav-links a { 
    text-decoration: none; 
    color: var(--cinza-escuro); 
    font-weight: 600; 
    transition: color 0.3s; 
}

.nav-links a:hover { 
    color: var(--azul-claro); 
}

.btn-nav { 
    background: var(--azul-petroleo); 
    color: var(--branco); 
    padding: 10px 20px;
    border-radius: 8px; 
    text-decoration: none; 
    font-weight: 600; 
    transition: all 0.3s ease;
}

.btn-nav:hover { 
    background: var(--azul-claro); 
    transform: translateY(-2px); 
}

.hero { 
    height: 60vh; 
    background: url('imgSobreNos.jpg') center/cover no-repeat;
    position: relative; 
    display: flex; 
    align-items: center; 
    justify-content: center;
}

/* Overlay azul por cima da foto pra escurecer e dar contraste no texto */
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(3,54,131,0.85) 0%, rgba(30,39,46,0.8) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2; /* texto fica por cima do overlay */
    max-width: 700px;
    padding: 40px;
    color: var(--branco);
}

.hero-content h1 {
    color: var(--branco);
}

.hero-content h1 span { 
    color: var(--azul); 
}

.hero-content p { 
    font-size: 1.2rem; 
    color: rgba(255,255,255,0.9); 
    margin: 24px 0 32px; 
}

section { 
    padding: 100px 0; 
}

.sobre {
    background: var(--branco);
}

.section-header { 
    max-width: 700px; 
    margin: 0 auto 60px; 
    text-align: center; 
}

.section-header h2 {
    color: var(--azul-claro);
}

.section-header p {
    color: var(--cinza-escuro);
    font-size: 20px;
    font-style: italic;
}

.cards-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); 
    gap: 24px; 
}

.card-servico { 
    background: var(--branco); 
    padding: 40px 30px; 
    border-radius: 12px; 
    border: 2px solid var(--cinza-escuro);
    box-shadow: var(--sombra); 
}

.card-servico::before {
    content: 'CREA-SP';
    position: absolute;
    top: 15px;
    right: -35px;
    width: 150px;
    padding: 5px 0;
    background: var(--azul-petroleo);
    color: var(--branco);
    font-size: 0.75rem;
    font-weight: 700;
    text-align: center;
    transform: rotate(45deg);
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}
.card-icon { 
    width: 60px; 
    height: 60px; 
    background: rgba(3,54,131,0.1); 
    border-radius: 12px; 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    margin-bottom: 20px; 
}

.card-icon i { 
    font-size: 2rem; 
    color: var(--azul-petroleo); 
}

.card-servico h3 {
    color: var(--azul-petroleo);
}

.card-servico p strong {
    color: var(--cinza-escuro);
}

footer { 
    background: #0D1117; 
    color: rgba(255,255,255,0.7); 
    padding: 60px 0 0; 
}

.footer-grid { 
    display: grid; 
    grid-template-columns: 2fr 1fr 1fr 1fr; 
    gap: 40px; 
    padding-bottom: 40px; 
}

.footer-brand .logo { 
    color: var(--branco); 
    margin-bottom: 16px; 
}

.footer-links h4, .footer-social h4 { 
    color: var(--branco); 
    margin-bottom: 16px; 
    font-size: 1.1rem; 
}

.footer-links a { 
    display: block; 
    color: rgba(255,255,255,0.7); 
    text-decoration: none; 
    margin-bottom: 10px; 
    transition: color 0.3s; 
}

.footer-links a:hover { 
    color: var(--azul); 
}

.social-icons { 
    display: flex; 
    gap: 16px; 
}

.social-icons a { 
    width: 40px; 
    height: 40px; 
    background: rgba(255,255,255,0.1); 
    border-radius: 8px; 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    color: var(--branco); 
    transition: all 0.3s; 
}

.social-icons a:hover { 
    background: var(--azul); 
}

.footer-bottom { 
    border-top: 1px solid rgba(255,255,255,0.1); 
    padding: 20px 0; 
    text-align: center; 
    font-size: 0.9rem; 
}


/* HEADER */
.accordion-header {
    background-color: var(--bra);
    margin-bottom: 0;
    font-size: 10px;
}

/* CORPO COM ANIMAÇÃO */
.accordion-body {
  padding: var(--bs-accordion-body-padding-y) var(--bs-accordion-body-padding-x);
  background: var(--branco);
  font-size: 1.08rem;
  line-height: 1.7;
  animation: fadeInUp .4s ease-out;
}

/* ANIMAÇÃO DE ABERTURA */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* CLASSES DO BOOTSTRAP PRA FUNCIONAR */
.collapse:not(.show) {
  display: none;
}

.collapsing {
  height: 0;
  overflow: hidden;
  transition: height .4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* RESPONSIVO */
/* ===== MENU HAMBÚRGUER - VERSÃO FINAL ===== */

/* Remove o display: none antigo do 768px */
@media (max-width: 768px) {
    h1 { font-size: 2.2rem; }
    h2 { font-size: 1.8rem; }
    .btn-nav { display: none; } /* só esconde o botão, não o nav-links */
    .hero-cta { flex-direction: column; }
    .sobre-grid, .contato-grid, .footer-grid { grid-template-columns: 1fr; }
    section { padding: 60px 0; }
}

/* Botão hambúrguer */
.menu-toggle {
  display: none;
  background: transparent;
  border: 2px solid var(--azul-petroleo);
  color: var(--azul-petroleo); /* Cor escura pra aparecer no header branco */
  font-size: 1.4rem;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: all .3s ease;
  z-index: 1001;
}

.menu-toggle:hover {
  background: var(--azul-petroleo);
  color: var(--branco);
}

.menu-toggle.active {
  background: var(--laranja);
  border-color: var(--laranja);
  color: var(--branco);
}

/* MOBILE - 992px pra pegar tablet também */
@media (max-width: 992px) {
  .menu-toggle {
    display: block;
  }

  nav .btn-nav {
    display: none;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--cinza-escuro);
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    padding: 100px 32px;
    gap: 0;
    transition: right .4s ease;
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.3);
    z-index: 1000;
  }

  .nav-links.active {
    right: 0;
  }

  .nav-links li {
    width: 100%;
    list-style: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .nav-links li:last-child {
    border-bottom: none;
  }

  .nav-links a {
    display: block;
    color: var(--branco);
    font-size: 1.1rem;
    padding: 16px 0;
    width: 100%;
    transition: all .3s;
  }

  .nav-links a:hover {
    color: var(--dourado);
    padding-left: 8px;
  }
}


.hero { 
    height: 100vh; 
    background: url('imgSobreNos.jpg') center/cover no-repeat;
    position: relative; 
    display: flex; 
    align-items: center; 
}

/* Tablet pra baixo - até 992px */
@media (max-width: 992px) {
    .hero {
        background-size: 80%; /* imagem fica com 80% no tablet */
        background-color: var(--azul-petroleo); /* cor pro fundo que sobrar */
    }
}

/* Celular - até 768px */
@media (max-width: 768px) {
    .hero {
        height: 70vh; /* diminui a altura no celular */
        background: url('imgSobreNos.jpg') center/cover no-repeat;
        background-attachment: scroll; /* tira o fixed que buga no mobile */
    }
    
    .hero-content {
        max-width: 100%; /* ocupa a largura toda */
        padding: 0 20px;
        text-align: left;
    }

    .hero-content h1 {
        font-size: 2.2rem;
    }
}