* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/*Definição das Variáveis CSS */
:root {
    --color-marinho: #191970;
    --color-amarelo-chave: #FFD700;
    --color-azul-bone: #003366;
    --color-urgencia: #FF4500;
    --color-gray-300: #d1d5db;
}

/*Estilos personalizados */
.bg-marinho {
    background-color: var(--color-marinho);
}

.bg-azul-bone {
    background-color: var(--color-azul-bone);
}

.text-urgencia {
    color: var(--color-urgencia);
}

.bg-urgencia {
    background-color: var(--color-urgencia);
}

.hover-bg-urgencia:hover {
    background-color: #e03e00;
    transition: background-color 0.3s ease;
}

.text-amarelo-chave {
    color: var(--color-amarelo-chave);
}

.border-urgencia {
    border-color: var(--color-urgencia);
}

.hover-text-amarelo:hover {
    color: var(--color-amarelo-chave);
    transition: color 0.3s ease;
}

/*Menu fixo */
.nav-fixed {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* Ajuste para o conteúdo não ficar atrás do menu fixo */
main {
    margin-top: 80px;
}

/*Estilo do ícone/cadeado */
.icon-cadeado {
    width: 1.5rem;
    height: 1.5rem;
    background-color: var(--color-amarelo-chave);
    border-radius: 4px;
    display: inline-block;
}

/*Estilo do hero background */
.hero-background {
    background-image: url('imagens/serv_cop.jpeg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(25, 25, 112, 0.7);
    z-index: 1;
}

.hero-background > * {
    position: relative;
    z-index: 2;
}

/*Estilo do mapa */
.mapa-com-efeito-vidro {
    box-shadow: 1px 10px 20px 1px rgba(0, 0, 0, 0.37);
    border-radius: 10px;
    border: 2px solid transparent;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.1);
}
.image-card-central {
    background-image: url(imagens/maquina_corte.png);
}

.mapa-com-efeito-vidro iframe {
    border-radius: 10px;
}

/* 7. Navegação */
.nav-link {
    position: relative;
    padding: 0.5rem 0;
    transition: all 0.3s ease;
    text-decoration: none;
    cursor: pointer;
}

.nav-link::before {
    content: '';
    position: absolute;
    width: 0;
    height: 3px;
    bottom: 0;
    left: 50%;
    background-color: var(--color-amarelo-chave);
    transition: all 0.3s ease;
    transform: translateX(-50%);
    border-radius: 2px;
}

.nav-link:hover::before {
    width: 100%;
}

.nav-link.active::before {
    width: 100%;
    background-color: var(--color-urgencia);
}

.nav-link:hover {
    color: var(--color-urgencia) !important;
}

.nav-link.active {
    color: var(--color-urgencia) !important;
    font-weight: 600;
}

/* 8. Cards de serviços */
.card-residencial,
.card-automotivo,
.card-industrial {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    min-height: 350px;
    position: relative;
    transition: all 0.3s ease;
}

.card-residencial {
    background-image: url('imagens/serv_cop.jpeg');
}

.card-automotivo {
    background-image: url('imagens/serv_car4.jpeg');
}

.card-industrial {
    background-image: url('imagens/serv_por.jpeg');
}

/* Overlay gradiente para melhor legibilidade */
.card-residencial::before,
.card-automotivo::before,
.card-industrial::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0.2) 0%,
        rgba(0, 0, 0, 0.5) 50%,
        rgba(0, 0, 0, 0.8) 100%
    );
    z-index: 1;
    transition: all 0.3s ease;
}

.card-residencial:hover::before,
.card-automotivo:hover::before,
.card-industrial:hover::before {
    background: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0.3) 0%,
        rgba(0, 0, 0, 0.6) 50%,
        rgba(0, 0, 0, 0.9) 100%
    );
}

.card-residencial > *,
.card-automotivo > *,
.card-industrial > * {
    position: relative;
    z-index: 2;
}

/* Efeito hover nos cards */
.card-residencial:hover,
.card-automotivo:hover,
.card-industrial:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* Melhor contraste para texto */
.card-residencial h3,
.card-automotivo h3,
.card-industrial h3,
.card-residencial p,
.card-automotivo p,
.card-industrial p {
    text-shadow: 2px 2px 4px rgba(0,0,0,0.8);
}

/* 9. Botões */
.btn-primario {
    background-color: var(--color-urgencia);
    color: white;
    font-weight: bold;
    padding: 12px 24px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.btn-primario:hover {
    background-color: #e03e00;
    transform: scale(1.05);
}

/*  Responsividade */
@media (max-width: 768px) {
    .hero-background h1 {
        font-size: 2.5rem;
    }
    
    .mapa-com-efeito-vidro {
        width: 100%;
        margin: 0 auto;
    }
    
    .nav-fixed {
        position: relative;
    }
    
    main {
        margin-top: 0;
    }
    
    .card-residencial,
    .card-automotivo,
    .card-industrial {
        min-height: 300px;
    }
}

@media (max-width: 640px) {
    .nav-link {
        padding: 0.75rem 0;
        font-size: 1.1rem;
    }
    
    .nav-link::before {
        height: 2px;
    }
    
    .hero-background h1 {
        font-size: 2rem;
    }
}

/* Animações */
* {
    scroll-behavior: smooth;
}

.fade-in {
    animation: fadeIn 0.8s ease-in;
}

@keyframes fadeIn {
    from { 
        opacity: 0; 
        transform: translateY(20px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

/*Acessibilidade */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto;
    }
}

a:focus, 
button:focus {
    outline: 2px solid transparent;
    outline-offset: 2px;
}

/* Fallbacks */
.card-residencial,
.card-automotivo,
.card-industrial {
    background-color: var(--color-azul-bone);
}