/* --- PALETA DE CORES TEMA "DEEP BLUE LIGHT TECH" --- */
:root {
    --bg-page: #e2e8f0;        /* Fundo principal cinza suave (não cansa a vista) */
    --bg-header: #1d4ed8;      /* Azul escuro forte e elegante para o topo */
    --bg-header-grad: #172554; /* Azul marinho profundo para o gradiente do topo */
    --accent-color: #2563eb;   /* Azul royal sólido (Destaque principal) */
    --accent-hover: #1e40af;   /* Azul mais fechado e sóbrio (Hover) */
    --text-main: #334155;      /* Cinza chumbo para leitura super confortável */
    --text-title: #0f172a;     /* Azul marinho quase preto para títulos */
    --card-bg: #f8fafc;        /* Fundo dos cartões off-white (quase branco) */
    --tag-bg: #dbeafe;         /* Fundo azul claro acinzentado para as tags */
    --tag-text: #1e40af;       /* Texto azul escuro nas tags */
    --border-color: #cbd5e1;   /* Linhas divisórias um tom mais escuras para contraste */
    
    /* Fontes 100% Ubuntu */
    --font-heading: 'Ubuntu', sans-serif;
    --font-body: 'Ubuntu', sans-serif;
    --font-code: 'Ubuntu Mono', monospace; /* Para dar uma pegada de terminal */
}

/* Container do perfil (layout horizontal) */
.perfil-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
    text-align: left;
}

/* Imagem */
.perfil-imagem img {
    width: 180px;
    height: 180px;
    object-fit: cover;
    border-radius: 50%; /* transforma em círculo */
    border: 4px solid #ffffff;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

/* Texto */
.perfil-texto {
    max-width: 600px;
}

/* Responsivo */
@media (max-width: 768px) {
    .perfil-content {
        flex-direction: column;
        text-align: center;
    }

    .perfil-texto {
        max-width: 100%;
    }
}

/* --- CONFIGURAÇÕES GLOBAIS --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-page);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    color: var(--text-title);
    margin-bottom: 10px;
}

/* --- CABEÇALHO (HERO SECTION) --- */
.perfil-container {
    background: linear-gradient(135deg, var(--bg-header), var(--bg-header-grad));
    color: #ffffff;
    text-align: center;
    padding: 100px 20px 60px;
    border-bottom: 4px solid var(--accent-color);
}

.perfil-container h1 {
    font-size: 3.2rem;
    color: #ffffff; 
    font-weight: 700;
    letter-spacing: -1px;
    text-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.perfil-container h2 {
    font-size: 1.3rem;
    font-weight: 300;
    color: #e0f2fe;
    margin-bottom: 25px;
    font-family: var(--font-code);
}

.perfil-container p {
    max-width: 650px;
    margin: 0 auto 20px;
    color: #bae6fd;
    font-weight: 300;
    font-size: 1.1rem;
}

/* --- LINKS SOCIAIS (INICIAL E AO ROLAR) --- */
.links-sociais {
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #f8fafc; /* Fundo off-white na barra de navegação */
    padding: 15px 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    border-bottom: 1px solid var(--border-color);
    transition: all 0.4s ease;
}

.nav-logo {
    display: none; 
    flex-direction: column;
}

.nome-logo {
    color: var(--text-title);
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    text-transform: lowercase;
}

.nome-logo::before {
    content: "$_ ";
    color: var(--accent-color);
}

.cargo-logo {
    color: var(--text-main);
    font-family: var(--font-code);
    font-size: 0.8rem;
}

.nav-links {
    display: flex;
}

.nav-links a {
    display: inline-block;
    margin: 0 10px;
    color: var(--text-main);
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 0.9rem;
    text-decoration: none;
    padding: 8px 20px;
    border-radius: 4px;
    border: 1px solid transparent;
    transition: all 0.3s ease;
}

.nav-links a:hover {
    color: var(--accent-color);
    border-bottom: 1px solid var(--accent-color);
    transform: translateY(-2px);
}

/* --- ESTADO "SCROLLED" --- */
.links-sociais.scrolled {
    justify-content: space-between;
    padding: 15px 50px;
    background: rgba(248, 250, 252, 0.95);
    backdrop-filter: blur(10px);
}

.links-sociais.scrolled .nav-logo {
    display: flex;
    animation: fadeInLogo 0.5s ease forwards;
}

@keyframes fadeInLogo {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

@media (max-width: 768px) {
    .links-sociais.scrolled {
        flex-direction: column;
        padding: 15px 20px;
        gap: 15px;
    }
    .links-sociais.scrolled .nav-logo {
        align-items: center;
    }
}

/* --- SEÇÃO DE HABILIDADES (SKILL CARDS) --- */
.stack-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr); 
    gap: 25px;
    max-width: 1200px;
    margin: -40px auto 60px;
    padding: 0 20px;
    position: relative;
    z-index: 10;
}

.stack-bloco {
    background: var(--card-bg);
    padding: 30px 20px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05); 
    border: 1px solid var(--border-color);
    border-top: 3px solid var(--accent-color); 
    width: 100%;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
}

@media (max-width: 1080px) {
    .stack-container { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 650px) {
    .stack-container {
        grid-template-columns: 1fr;
        margin-top: 40px;
    }
}

.stack-bloco:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 25px rgba(2, 132, 199, 0.12);
}

.stack-bloco h4 {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-title);
    margin-bottom: 25px;
    text-align: center;
    width: 100%;
    border-bottom: 1px dashed var(--border-color);
    padding-bottom: 15px;
}

.stack {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    width: 100%;
    justify-items: center;
    align-items: center;
}

.each_stack {
    position: relative; 
    display: flex; 
    align-items: center;
    justify-content: center;
    cursor: pointer;
    width: 55px;
    height: 55px;
    border-radius: 8px;
    background: #f1f5f9; /* Fundo cinza bem suave em repouso */
    border: 1px solid var(--border-color);
    box-shadow: inset 0 2px 4px rgba(255,255,255,0.5); /* Leve volume */
    transition: all 0.3s ease; 
}

.each_stack img {
    height: 35px;        
    width: 35px;         
    object-fit: contain; 
    transition: all 0.3s ease;
    filter: grayscale(10%) opacity(0.9); 
}

.each_stack:hover {
    background: #ffffff; /* Dá um "pop" acendendo em branco no hover */
    border-color: var(--accent-color);
    box-shadow: 0 4px 10px rgba(2, 132, 199, 0.15);
    transform: scale(1.1);
}

.each_stack:hover img {
    filter: grayscale(0%) opacity(1);
}

.each_stack::after {
    content: attr(data-nome); 
    position: absolute;
    bottom: 130%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background-color: var(--text-title); 
    color: #ffffff; 
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 700;
    white-space: nowrap; 
    box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.15);
    z-index: 10;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease; 
}

.each_stack::before {
    content: "";
    position: absolute;
    bottom: 112%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    border-width: 6px;
    border-style: solid;
    border-color: var(--text-title) transparent transparent transparent;
    z-index: 10;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.each_stack:hover::after,
.each_stack:hover::before {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0); 
}

/* --- SEÇÃO DE PROJETOS --- */
.projetos-container {
    max-width: 1100px;
    margin: 80px auto;
    padding: 0 20px;
}

.titulo-secao {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 40px;
    color: var(--text-title);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* Filtros de Projetos */
.filtros {
    text-align: center;
    margin-bottom: 50px;
}

.filtros button {
    padding: 8px 25px;
    margin: 5px;
    border: 1px solid var(--border-color);
    border-radius: 4px; 
    background: var(--card-bg);
    color: var(--text-main);
    font-family: var(--font-code);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s;
}

.filtros button:hover {
    background: var(--tag-bg);
    color: var(--accent-color);
    border-color: var(--accent-color);
}

/* Grid e Cartões */
.grid-projetos {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

@media (max-width: 768px) {
    .grid-projetos { grid-template-columns: 1fr; }
}

.cartao-projeto {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 35px;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.cartao-projeto:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.1);
}

.cartao-projeto h4 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text-title);
}

.cartao-projeto > .tags span:first-child {
    background: var(--accent-color);
    color: #ffffff;
    font-weight: 700;
    border-color: var(--accent-color);
}

.descricao-projeto {
    margin: 15px 0 25px 0;
    padding-left: 18px;
    font-size: 0.95rem;
    color: var(--text-main);
    flex-grow: 1;
}

.descricao-projeto li {
    margin-bottom: 10px;
}

/* Tags das Tecnologias */
.tags {
    margin-bottom: 20px;
}

.tags span {
    display: inline-block;
    background-color: var(--tag-bg);
    color: var(--tag-text);
    font-size: 0.75rem;
    font-family: var(--font-code);
    padding: 4px 10px;
    border-radius: 4px;
    margin-right: 6px;
    margin-bottom: 8px;
    border: 1px solid var(--border-color);
}

/* Botão do GitHub */
.btn-projeto {
    display: block;
    text-align: center;
    margin-top: 15px;
    padding: 12px 16px;
    background: transparent;
    color: var(--accent-color);
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 0.95rem;
    border: 1px solid var(--accent-color);
    border-radius: 4px;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-projeto::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 0; height: 100%;
    background-color: var(--accent-color);
    transition: width 0.3s ease;
    z-index: -1;
}

.btn-projeto:hover {
    color: #ffffff; /* Fica branco no hover */
}

.btn-projeto:hover::before {
    width: 100%;
}

/* --- RODAPÉ --- */
footer {
    text-align: center;
    padding: 40px 20px;
    background-color: #cbd5e1; /* Rodapé um pouco mais destacado do fundo da página */
    color: var(--text-title);
    margin-top: 80px;
    font-family: var(--font-code);
    font-size: 0.85rem;
}