/* Variáveis de cores */
:root {
    --color-primary: #0a5d36; /* Verde escuro profissional (Sustentabilidade) */
    --color-secondary: #1a4b78; /* Azul escuro profissional (Tecnologia) */
    --color-background: #f8f9fa; /* Cinza muito claro */
    --color-text: #212529; /* Quase preto */
    --color-text-light: #fff;
    --color-shadow: rgba(0, 0, 0, 0.1);
}

/* Reset e estilos básicos */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Roboto', sans-serif;
}

/* Tipografia fluida global (melhora em celulares, tablets e projetores) */
html {
    font-size: clamp(14px, 1.1vw, 18px);
}

/* Body */

body {
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
}

/* Skip link (Acessibilidade) */
.skip-link {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}
.skip-link:focus {
    left: 10px;
    top: 10px;
    width: auto;
    height: auto;
    padding: 8px 12px;
    background: var(--color-secondary);
    color: var(--color-text-light);
    border-radius: 4px;
    box-shadow: 0 2px 6px var(--color-shadow);
    z-index: 2000;
}

/* Foco visível em elementos interativos */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 3px solid var(--color-secondary);
    outline-offset: 2px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Área lateral do Sobre Nós (logo/equipe) */
.founders-aside {
    display: flex;
    justify-content: center;
    align-items: center;
}

.founders-aside img {
    width: 400px; /* maior no desktop para equilíbrio visual */
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 8px var(--color-shadow);
}

@media (max-width: 768px) {
    .founders-aside img {
        width: 140px; /* reduz em telas pequenas para manter proporção */
        height: auto;
    }
}

/* Header e navegação */
header {
    background-color: var(--color-text-light);
    box-shadow: 0 2px 4px var(--color-shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5em;
    font-weight: 700;
    color: var(--color-primary);
}

.logo img {
    height: 40px; 
    margin-right: 10px;
    /* Estilo para placeholder visual do logo (caso não carregue) */
    background-color: var(--color-primary); 
    border-radius: 4px;
}

.nav-links a {
    color: var(--color-text);
    text-decoration: none;
    margin-left: 25px;
    font-weight: 500;
    transition: color 0.3s;
}

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

/* Hero section */
.hero {
    background: 
        linear-gradient(rgba(10, 93, 54, 0.65), rgba(52, 152, 219, 0.55)),
        url('imgs/fundo-hero.svg') center/cover no-repeat;
    background-blend-mode: soft-light, normal;
    color: var(--color-text-light);
    text-align: center;
    padding: 100px 20px;
    min-height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeIn 1s forwards;
    animation-delay: 0.3s;
}

.hero h1 {
    font-size: 3em;
    margin-bottom: 10px;
    text-shadow: 0 2px 6px rgba(0,0,0,0.25);
}

.hero p {
    font-size: 1.5em;
    font-weight: 300;
    text-shadow: 0 1px 4px rgba(0,0,0,0.2);
}

.hero-description {
    font-size: 1.1em;
    margin-top: 20px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 400;
}

/* Seções gerais */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
    font-size: 2.5em;
    color: var(--color-primary);
}

.section-block {
    background-color: var(--color-text-light);
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 12px var(--color-shadow);
    margin-bottom: 40px;
    opacity: 0; 
    transform: translateY(20px); 
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.section-block.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Sobre Nós */
.about-content {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    align-items: center;
    margin-bottom: 30px;
}

.about-text {
    flex: 1;
    min-width: 300px;
}

.about-image {
    flex: 1;
    min-width: 300px;
    text-align: center;
}

.about-image .founders-aside img {
    height: auto;
    display: block;
    margin: 0 auto;
    box-shadow: 0 4px 8px var(--color-shadow);
}

.missao-valores {
    display: flex;
    gap: 20px;
    margin-top: 30px;
}

.mv-item {
    flex: 1;
    padding: 20px;
    border-left: 3px solid var(--color-secondary);
    background-color: #f9f9f9;
}

.mv-item h4 {
    color: var(--color-primary);
    margin-bottom: 10px;
    font-size: 1.2em;
}

/* Produtos e Tecnologias */
.product-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    text-align: center;
}

.product-card {
    padding: 20px;
    background-color: var(--color-text-light);
    border-radius: 8px;
    box-shadow: 0 4px 8px var(--color-shadow);
}

.product-card img {
    width: 100%;
    border-radius: 4px;
    margin-bottom: 15px;
    /* Mantém proporção constante dos cards sem cortes */
    aspect-ratio: 16 / 9;
    background-color: #fff;
    object-fit: contain;
}

.process-flow {
    margin-top: 40px;
    padding: 30px;
    background-color: var(--color-primary);
    color: var(--color-text-light);
    border-radius: 8px;
}

.process-flow h3 {
    text-align: center;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--color-text-light);
    padding-bottom: 10px;
}

.flow-step {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    gap: 15px;
}

.flow-step:last-child {
    margin-bottom: 0;
}

.step-number {
    font-size: 1.5em;
    font-weight: 700;
    color: var(--color-secondary);
    background-color: var(--color-text-light);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.effluent-treatment {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px dashed var(--color-text-light);
}

.process-flow p, .effluent-treatment p {
    font-size: 0.95em;
}

/* Sustentabilidade */
.sustainability-content {
    display: flex;
    gap: 40px;
    align-items: center;
}

.sustainability-text {
    flex: 2;
}

.sustainability-icon {
    flex: 1;
    text-align: center;
}

.sustainability-icon svg {
    width: 100px;
    height: 100px;
    fill: var(--color-primary);
}

.sustainability-subtitle {
    margin-top: 20px;
    color: var(--color-primary);
}

.benefits-list,
.target-list,
.value-list {
    margin-left: 20px;
    margin-bottom: 20px;
}

.value-list {
    margin-bottom: 0;
}

.subproducts-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

.table-header {
    background-color: rgba(255, 255, 255, 0.1);
}

.table-header th {
    padding: 8px;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

.table-row td {
    padding: 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.table-row:last-child td {
    border-bottom: none;
}

.effluent-note {
    margin-top: 15px;
}

/* Galeria / Projetos */
.gallery {
    display: grid;
    grid-template-columns: repeat(2, minmax(350px, 1fr)); /* Agrupa dois a dois */
    gap: 20px;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 4px 8px var(--color-shadow);
    aspect-ratio: 16 / 9;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    display: block;
    transition: transform 0.3s ease;
    object-fit: contain;
    background-color: #fff; /* Fundo neutro para barras quando necessário */
}

.gallery-item:hover img {
    transform: scale(1.05);
}

.gallery-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(30, 132, 73, 0.85);
    color: var(--color-text-light);
    padding: 15px;
    font-size: 1.1em;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.gallery-item:hover .gallery-caption {
    transform: translateY(0);
}

/* Contato */
.contact-content {
    display: flex;
    gap: 40px;
}

.contact-form-container {
    flex: 2;
}

.contact-info-container {
    flex: 1;
    padding: 20px;
    background-color: #eaf4fc;
    border-radius: 8px;
}

.contact-info-container h4 {
    color: var(--color-secondary);
    margin-bottom: 15px;
}

.contact-info-container p {
    margin-bottom: 10px;
}

.social-links a {
    color: var(--color-secondary);
    font-size: 1.5em;
    margin-right: 15px;
    transition: color 0.3s;
}

.social-links a:hover {
    color: var(--color-primary);
}

.contact-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 10px;
    margin-bottom: 20px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

.contact-form button {
    background-color: var(--color-secondary);
    color: var(--color-text-light);
    border: none;
    padding: 12px 25px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1em;
    transition: background-color 0.3s;
}

.contact-form button:hover {
    background-color: #2980b9;
}

/* Status de envio do formulário */
.contact-status {
    min-height: 20px;
    color: var(--color-secondary);
    font-weight: 500;
}

/* Footer */
footer {
    background-color: var(--color-text);
    color: var(--color-text-light);
    text-align: center;
    padding: 20px 0;
    margin-top: 40px;
}

/* Media Queries para Responsividade */
@media (max-width: 992px) {
    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        position: absolute;
        top: 70px; 
        left: 0;
        background-color: var(--color-text-light);
        box-shadow: 0 4px 8px var(--color-shadow);
        padding: 10px 20px;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-links a {
        margin: 10px 0;
        padding: 10px 0;
        border-bottom: 1px solid #eee;
    }
    
    .hamburger {
        display: block;
        cursor: pointer;
        font-size: 1.5em;
    }

    .hero h1 {
        font-size: 2.5em;
    }

    .sustainability-content, .contact-content, .missao-valores {
        flex-direction: column;
    }

    .sustainability-icon {
        margin-top: 30px;
    }
    
    .contact-form-container, .contact-info-container {
        flex: none;
        width: 100%;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 80px 15px;
    }
    
    .hero h1 {
        font-size: 2em;
    }
    
    .gallery {
        grid-template-columns: 1fr;
    }
    
    .product-list {
        grid-template-columns: 1fr;
    }
}

/* Ajustes específicos para celulares muito pequenos */
@media (max-width: 480px) {
    .section-title {
        font-size: 2em;
    }

    .hero h1 {
        font-size: 1.8em;
    }

    .hero p {
        font-size: 1.1em;
    }

}

/* Modo projetor / telas muito grandes */
@media (min-width: 1600px) {
    .container {
        max-width: 1600px;
    }

    .hero {
        min-height: 60vh;
    }

    .hero h1 {
        font-size: 3.5em;
    }

    .section-title {
        font-size: 3em;
    }

    .founders-aside img {
        width: 480px;
    }

    .gallery-item img {
        height: 420px;
    }
}

/* Efeitos de Transição (Fade-In) */
@keyframes fadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}