/* GLOBAL VARIABLES */
:root {
    --azul-vertex: #3b93d1; 
    --azul-escuro-header: #141e37; 
    --branco: #ffffff;
    --azul-claro: #94a3b8;
    --transicao: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

/* --- HEADER --- */
header {
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    background-color: var(--azul-escuro-header);
    transition: var(--transicao);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    align-items: center; 
}

.logo {
    flex: 1; 
    display: flex;
    align-items: center;
}

.logo img {
    height: 45px;
    width: auto;
}

.nav-menu {
    flex: 2; 
    display: flex;
    justify-content: center;
}

.nav-menu ul {
    display: flex;
    list-style: none;
    gap: 35px;
    flex-wrap: wrap; 
}

.nav-link {
    text-decoration: none;
    color: var(--azul-claro);
    font-weight: 600;
    font-size: 0.95rem;
    position: relative;
    padding: 10px 0;
    transition: var(--transicao);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--azul-vertex);
    transition: var(--transicao);
}

.nav-link:hover {
    color: var(--branco);
}

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

.header-cta {
    flex: 1; 
    display: flex;
    justify-content: flex-end;
}

.link-icone-github {
    display: inline-block;
    transition: var(--transicao);
}

.icone-img {
    height: 32px; 
    width: auto;
    display: block;
    filter: brightness(0) invert(1); 
}

.link-icone-github:hover {
    transform: translateY(-3px) scale(1.1);
}

header.scrolled {
    padding: 12px 0;
    background-color: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* --- HOME --- */
.hero-portal {
    background-color: var(--azul-escuro-header);
    padding: 100px 20px; 
    text-align: center;
    color: var(--branco);
}

.hero-portal .badge {
    background: rgba(59, 147, 209, 0.2);
    color: var(--azul-vertex);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 20px;
    display: inline-block;
}

.hero-portal h1 {
    font-size: 3rem;
    line-height: 1.2;
    margin-bottom: 20px;
}

.about-section {
    padding-top: 100px;
    padding-bottom: 60px;
    background-color: var(--branco);
}

.about-container {
    max-width: 1450px;
    margin: 0 auto;
    display: flex;
    align-items: center; 
    gap: 60px;
    padding: 0 40px; 
}

.about-content {
    flex: 1; 
}

.about-content .badge {
    color: var(--azul-vertex);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 1px;
}

.about-content h2 {
    font-size: 2.5rem;
    color: var(--azul-escuro-header);
    margin: 15px 0 25px;
}

.about-content p {
    color: #475569;
    line-height: 1.8;
    margin-bottom: 10px;
}

.objectives-list {
    list-style: none;
    margin-top: 25px;
}

.objectives-list li {
    margin-bottom: 12px;
    color: #334155;
    position: relative;
    padding-left: 25px;
}

.objectives-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--azul-vertex);
    font-weight: bold;
}

.about-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.about-image img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.latest-articles-home { 
    padding: 80px 20px; 
    background: #fff; 
}

.section-nav {
    max-width: 1370px;
    margin: 0 auto 40px auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.link-explorar {
    color: var(--azul-vertex);
    text-decoration: none;
    font-weight: 600;
}

.featured-articles-grid {
    max-width: 1340px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.article-card-featured {
    border: 1px solid #eee;
    padding: 40px;
    border-radius: 15px;
    transition: var(--transicao);
}

.article-card-featured:hover {
    border-color: var(--azul-vertex);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.card-tag {
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--azul-vertex);
    text-transform: uppercase;
    margin-bottom: 20px;
}

.article-meta {
    font-size: 0.85rem;
    color: #888;
    margin-bottom: 15px;
}

.article-teaser {
    color: #555;
    line-height: 1.6;
    margin-bottom: 25px;
}

.btn-read {
    text-decoration: none;
    color: var(--azul-escuro-header);
    font-weight: 700;
    border-bottom: 2px solid var(--azul-vertex);
    padding-bottom: 3px;
}


/* --- TEAM --- */
.team-hero {
    background-color: var(--azul-escuro-header);
    color: var(--branco);
    padding: 60px 20px;
    text-align: center;
}

.team-hero h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.team-hero p {
    color: var(--azul-claro);
    font-size: 1.1rem;
}

.team-grid-section {
    padding: 50px 20px;
    background-color: #fcfcfc;
}

.filter-container {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 16px;
    border: 2px solid var(--azul-vertex);
    background: transparent;
    color: var(--azul-vertex);
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.filter-btn:hover, .filter-btn.active {
    background-color: var(--azul-vertex);
    color: white;
}

.hide { display: none !important; }

.team-grid.compact {
    max-width: 1500px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); 
    gap: 20px;
}

.team-card-lean {
    background: #f7f7f5;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 25px 20px;
    text-align: center;
    transition: var(--transicao);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.team-card-lean:hover {
    transform: translateY(-5px);
    border-color: var(--azul-vertex);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
}

.member-data h3 {
    font-size: 1.1rem;
    color: var(--azul-escuro-header);
}

.member-data .institution {
    display: block;
    font-size: 0.85rem;
    color: var(--azul-vertex);
    font-weight: 600;
    margin: 5px 0 15px 0;
}

.focus-area {
    font-size: 0.85rem;
    color: #1c1a1a;
    line-height: 1.4;
    margin: 15px 0;
}

.member-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: auto;
}

.link-lattes {
    font-size: 0.8rem;
    color: var(--azul-escuro-header);
    font-weight: 700;
    text-decoration: underline;
    text-decoration-color: var(--azul-vertex);
    transition: color 0.3s;
}

.link-lattes:hover { color: var(--azul-vertex); }

.icon-mail-img {
    width: 30px; 
    height: auto;
    opacity: 0.7;
    transition: var(--transicao);
    margin-top: 10px;
}

.email-protection:hover .icon-mail-img {
    opacity: 1;
    transform: scale(1.1);
    filter: brightness(1.2); 
}

/* --- RESOURCES --- */
.recursos-hero {
    background-color: var(--azul-escuro-header);
    padding: 80px 20px;
    text-align: center;
    color: var(--branco);
}

.main-recursos-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 60px 20px;
}

.categoria-recurso {
    background: #fff;
    margin-bottom: 20px;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
}

.categoria-header {
    padding: 30px;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid transparent;
}

.categoria-recurso[open] .categoria-header {
    border-bottom: 1px solid #edf2f7;
    background-color: #f8fafc;
}

.categoria-header h2 {
    color: var(--azul-escuro-header);
    font-size: 1.3rem;
    margin: 0px;
}

.seta-categoria::after {
    content: '▼';
    color: var(--azul-vertex);
    transition: 0.3s;
    display: inline-block;
}

.categoria-recurso[open] .seta-categoria::after { transform: rotate(180deg); }

.categoria-content { padding: 30px; animation: fadeIn 0.4s ease-in-out; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

.artigo-item {
    background: var(--branco);
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    margin-bottom: 20px;
    transition: var(--transicao);
    overflow: hidden;
}

.artigo-item[open] {
    border-color: var(--azul-vertex);
    box-shadow: 0 10px 25px rgba(59, 147, 209, 0.1);
}

.artigo-header {
    padding: 25px 30px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    list-style: none;
}

.artigo-header h3 {
    font-size: 1.1rem;
    color: var(--azul-escuro-header);
    margin-bottom: 8px;
    line-height: 1.4;
}

.artigo-meta {
    display: flex;
    gap: 20px;
    font-size: 0.85rem;
    color: var(--azul-claro);
    font-weight: 600;
}

.artigo-local { color: var(--azul-vertex); }
.icon-open { font-size: 1.5rem; color: var(--azul-vertex); font-weight: 300; }

.artigo-body {
    padding: 0 30px 30px 30px;
    border-top: 1px solid #f1f5f9;
    background-color: #fafbfc;
}

.artigo-body h4 {
    margin-top: 20px;
    font-size: 0.9rem;
    text-transform: uppercase;
    color: var(--azul-escuro-header);
    margin-bottom: 10px;
}

.artigo-body p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: #475569;
    margin-bottom: 20px;
}

.btn-download {
    display: inline-block;
    color: var(--azul-vertex);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.85rem;
    border: 1px solid var(--azul-vertex);
    padding: 8px 20px;
    border-radius: 5px;
    transition: var(--transicao);
}

.btn-download:hover { background: var(--azul-vertex); color: var(--branco); }

/* --- FOOTER --- */
.main-footer {
    background-color: var(--azul-escuro-header);
    color: var(--branco);
    padding: 60px 0 0 0; 
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 50px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    justify-content: space-between;
    gap: 40px;
    padding-bottom: 60px;
}

.partners-triad {
    display: grid;
    grid-template-columns: repeat(3, auto); 
    gap: 25px 40px;
    justify-content: center; 
    align-items: center; 
}

.ufabc-logo, .unifesp-logo, .unicamp-logo, .ita-logo, .telecom-paris, .efrei-logo{
    width: auto;
    justify-self: center;
}

.telecom-paris { max-height: 70px; filter: brightness(95%); }
.ufabc-logo { max-height: 60px; filter: brightness(125%); }
.unifesp-logo { max-height: 50px; filter: brightness(125%); }
.unicamp-logo { max-height: 60px; filter: brightness(95%); }
.ita-logo { max-height: 50px; filter: brightness(95%); }
.efrei-logo { max-height: 70px; filter: brightness(95%); }



.footer-column h3, .footer-contact h3 {
    color: var(--azul-vertex);
    font-size: 1.1rem;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-column ul { list-style: none; }
.footer-column ul li { margin-bottom: 12px; }

.footer-column ul li a {
    text-decoration: none;
    color: var(--azul-claro);
    font-size: 0.9rem;
    transition: var(--transicao);
}
.footer-column ul li a:hover { color: var(--branco); padding-left: 5px; }

.footer-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
    max-width: 300px;
}

.footer-input, .footer-textarea {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    padding: 10px;
    color: #fff;
    font-size: 0.85rem;
    transition: border-color 0.3s ease;
}

.footer-input:focus, .footer-textarea:focus {
    outline: none;
    border-color: var(--azul-vertex);
    background: rgba(255, 255, 255, 0.1);
}

.footer-textarea { height: 80px; resize: none; }

.footer-submit {
    background-color: var(--azul-vertex);
    color: #fff;
    border: none;
    padding: 10px;
    border-radius: 4px;
    font-weight: 700;
    cursor: pointer;
    transition: filter 0.3s ease;
}

.footer-submit:hover { filter: brightness(1.2); }


/* =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= */
/* MEDIA QUERIES (Responsiveness)      */
/* =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= */

@media (max-width: 900px) {
    .footer-container {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .footer-contact {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 768px) {
    
    /* Header (Empilha Logo, Menu e GitHub) */
    .header-container {
        flex-direction: column;
        gap: 15px;
        padding: 0 20px;
    }
    
    .nav-menu ul {
        gap: 20px;
    }

    .hero-portal h1 { font-size: 2.2rem; }
    
    .about-container {
        flex-direction: column; 
        text-align: center;
        padding: 0 20px;
    }
    
    .objectives-list li {
        text-align: left;
    }

    .featured-articles-grid {
        grid-template-columns: 1fr;
    }
    
    .section-nav {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .artigo-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .artigo-meta {
        flex-direction: column;
        gap: 5px;
    }
    
    .icon-open {
        align-self: flex-end;
    }

    .partners-triad {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}