/*
 * Portfólio pessoal — folha de estilos.
 * Estrutura: temas > componentes > seções > responsividade > acessibilidade.
 */


/* ========================================
   01. TEMAS E VARIÁVEIS
======================================== */

/* Alterar estas variáveis muda as cores de todo o portfólio, inclusive no tema claro. */

:root {
    --bg-primary: #0B1120;
    --bg-secondary: #172338;

    --color-primary: #3B82F6;
    --color-accent: #22D3EE;

    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;

    --border-color: #334155;

    --tag-bg: #243854;
    --tag-text: #93C5FD;
}

:root.tema-claro {
    --bg-primary: #F8FAFC;
    --bg-secondary: #FFFFFF;

    --color-primary: #1D4ED8;
    --color-accent: #0E7490;

    --text-primary: #0F172A;
    --text-secondary: #475569;

    --border-color: #CBD5E1;

    --tag-bg: #DBEAFE;
    --tag-text: #1E40AF;
}


/* ========================================
   02. ESTILOS GERAIS
======================================== */

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 100px;
}

body {
    min-height: 100vh;

    background-color: var(--bg-primary);
    color: var(--text-primary);

    font-family: Arial, Helvetica, sans-serif;
    font-size: 16px;
    line-height: 1.6;

    transition:
        background-color 0.3s ease,
        color 0.3s ease;
}

a {
    color: inherit;
}

button,
input,
textarea {
    font: inherit;
}

button {
    cursor: pointer;
}

img {
    max-width: 100%;
}

[hidden] {
    display: none !important;
}


/* ========================================
   03. CABEÇALHO E NAVEGAÇÃO
======================================== */

header {
    position: sticky;
    top: 0;
    z-index: 1000;

    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;

    width: 100%;
    padding: 16px max(24px, calc((100% - 1200px) / 2));

    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.marca {
    margin: 0;
    flex-shrink: 0;
}

.marca-link {
    display: inline-flex;
    align-items: center;
    gap: 12px;

    text-decoration: none;
    white-space: nowrap;
}

.marca-icone {
    color: var(--color-accent);

    font-family: Consolas, monospace;
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -2px;

    transition: transform 0.3s ease;
}

.marca-nome {
    color: var(--text-primary);

    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.marca-nome span {
    color: var(--color-accent);
}

.marca-link:hover .marca-icone {
    transform: translateX(4px);
}

header nav {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 24px;
}

header nav a {
    color: var(--text-primary);

    font-size: 14px;
    font-weight: 600;
    text-decoration: none;

    transition: color 0.3s ease;
}

header nav a:hover {
    color: var(--color-accent);
}

.botao-tema {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;

    padding: 10px 16px;
    flex-shrink: 0;

    background-color: var(--bg-secondary);
    color: var(--text-primary);

    border: 1px solid var(--border-color);
    border-radius: 8px;

    font-size: 14px;

    transition: border-color 0.3s ease;
}

.botao-tema:hover {
    border-color: var(--color-accent);
}

.botao-tema svg {
    width: 18px;
    height: 18px;

    flex-shrink: 0;

    color: var(--color-accent);
}

.botao-menu {
    display: none;

    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;

    width: 44px;
    height: 44px;
    padding: 0;

    background-color: var(--bg-secondary);
    color: var(--text-primary);

    border: 1px solid var(--border-color);
    border-radius: 8px;

    cursor: pointer;

    transition: border-color 0.3s ease;
}

.menu-linha {
    display: block;

    width: 20px;
    height: 2px;

    background-color: var(--color-accent);
    border-radius: 2px;

    transition:
        transform 0.3s ease,
        opacity 0.3s ease;
}

.botao-menu:hover {
    border-color: var(--color-accent);
}

.botao-menu[aria-expanded="true"] .menu-linha:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.botao-menu[aria-expanded="true"] .menu-linha:nth-child(2) {
    opacity: 0;
}

.botao-menu[aria-expanded="true"] .menu-linha:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}


/* ========================================
   04. ESTRUTURA DA PÁGINA
======================================== */

/* main centraliza o conteúdo; as seções mantêm a mesma margem lateral. */

main {
    width: min(1200px, calc(100% - 48px));
    margin: 0 auto;
}

main section {
    position: relative;

    padding: 80px 0;

    border-bottom: 1px solid var(--border-color);

    scroll-margin-top: 100px;
}

main section > p {
    max-width: 650px;

    margin-bottom: 24px;

    color: var(--text-secondary);
    font-size: 17px;
    line-height: 1.8;
}


/* ========================================
   05. TÍTULOS DAS SEÇÕES
======================================== */

/* ::after desenha a linha azul sem exigir um elemento extra no HTML. */

#sobre .titulo-secao,
#experiencia .titulo-secao,
#projetos .titulo-secao,
#habilidades .titulo-secao,
#certificacoes .titulo-secao,
#contato .titulo-secao {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;

    color: var(--text-primary);

    font-size: clamp(30px, 3vw, 42px);
    font-weight: 700;
    line-height: 1.2;

    margin-bottom: 24px;
}

.titulo-secao::after {
    content: "";

    display: block;

    width: 48px;
    height: 4px;

    background-color: var(--color-primary);
    border-radius: 4px;
}

#sobre .titulo-secao {
    margin-bottom: 0;
}

#certificacoes > p {
    max-width: 100%;
}


/* ========================================
   06. APRESENTAÇÃO / INÍCIO
======================================== */

#inicio.hero {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    gap: 12px;

    min-height: 520px;
    padding: 96px 0;

    position: relative;

    /* Gradiente no próprio fundo evita cortes visíveis nas bordas. */
    background: radial-gradient(
        ellipse 340px 280px at 68% 48%,
        rgba(59, 130, 246, 0.16) 0%,
        rgba(59, 130, 246, 0.07) 45%,
        transparent 100%
    );
}

#inicio h1,
#inicio h2,
#inicio p {
    margin-bottom: 0;
}

#inicio .hero-etiqueta {
    color: var(--color-accent);

    font-size: 14px;
    font-weight: 700;

    text-transform: uppercase;
    letter-spacing: 2px;
}

#inicio .hero-nome {
    color: var(--text-primary);

    font-size: clamp(42px, 5vw, 68px);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1.5px;

    max-width: 900px;
}

#inicio .hero-nome span {
    color: var(--color-accent);
}

#inicio .hero-titulo {
    color: var(--color-primary);

    font-size: clamp(26px, 3vw, 38px);
    font-weight: 700;
    line-height: 1.3;

    max-width: 850px;
}

#inicio > * {
    position: relative;
    z-index: 1;
}


/* ========================================
   07. BOTÕES
======================================== */

.botao {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;

    padding: 12px 24px;

    border: 1px solid transparent;
    border-radius: 10px;

    font-size: 16px;
    font-weight: 600;
    text-decoration: none;

    transition:
        background-color 0.3s ease,
        border-color 0.3s ease,
        transform 0.3s ease;
}

.botao-primario {
    background-color: var(--color-primary);
    color: #FFFFFF;
}

.botao-primario:hover {
    background-color: #2563EB;
}

.botao-secundario {
    background-color: transparent;
    color: var(--text-primary);

    border-color: var(--color-primary);
}

.botao-secundario:hover {
    background-color: var(--tag-bg);
}

.botao:hover {
    transform: translateY(-3px);
}

.hero-acoes {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;

    margin-top: 24px;
}


/* ========================================
   08. SOBRE MIM
======================================== */

#sobre.secao-sobre {
    padding: 96px 0;
}

.sobre-grid {
    display: grid;
    grid-template-columns:
        minmax(0, 0.8fr)
        minmax(0, 1.2fr);

    align-items: center;
    gap: 64px;
}

.sobre-foto {
    width: 100%;
    max-width: 340px;

    aspect-ratio: 3 / 4;
    overflow: hidden;

    background-color: var(--bg-secondary);

    border: 1px solid var(--border-color);
    border-radius: 18px;

    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
}

.sobre-foto img {
    display: block;

    width: 100%;
    height: 100%;

    object-fit: cover;
    object-position: center;
}

.sobre-conteudo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
}

.sobre-conteudo p {
    max-width: 100%;
    margin-bottom: 0;

    color: var(--text-secondary);

    font-size: 17px;
    line-height: 1.8;
}

.sobre-conteudo strong {
    color: var(--text-primary);
    font-weight: 700;
}


/* ========================================
   09. EXPERIÊNCIA PROFISSIONAL
======================================== */

.experiencia-lista {
    display: flex;
    flex-direction: column;
    gap: 24px;

    margin: 32px 0 0 10px;
    padding: 0 0 0 32px;

    border-left: 2px solid var(--border-color);

    list-style: none;
}

.experiencia-item {
    position: relative;
}

.experiencia-item::before {
    content: "";

    position: absolute;
    left: -41px;
    top: 30px;

    width: 16px;
    height: 16px;

    background-color: var(--color-accent);

    border: 3px solid var(--bg-primary);
    border-radius: 50%;

    box-shadow: 0 0 0 2px var(--color-primary);
}

.experiencia-card {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;

    padding: 28px;

    background-color: var(--bg-secondary);

    border: 1px solid var(--border-color);
    border-radius: 12px;

    transition:
        border-color 0.3s ease,
        box-shadow 0.3s ease;
}

.experiencia-card:hover {
    border-color: var(--color-primary);

    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.10);
}

.experiencia-periodo {
    color: var(--color-accent);

    font-size: 14px;
    font-weight: 600;
}

.experiencia-card h3 {
    color: var(--text-primary);

    font-size: 22px;
    font-weight: 700;
    line-height: 1.4;
}

.experiencia-empresa {
    color: var(--color-primary);

    font-size: 16px;
    font-weight: 600;
}

.experiencia-atividades {
    display: flex;
    flex-direction: column;
    gap: 10px;

    padding-left: 20px;
    margin-top: 8px;

    color: var(--text-secondary);
}

.experiencia-atividades li {
    font-size: 15px;
    line-height: 1.8;
}

.experiencia-atividades li::marker {
    color: var(--color-accent);
}


/* ========================================
   10. PROJETOS E FILTROS
======================================== */

/* A classe .ativo é controlada pelo JavaScript; [hidden] é tratado no reset. */

.projetos-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;

    margin-top: 32px;
}

.projeto-card {
    display: flex;
    flex-direction: column;
    gap: 16px;

    min-width: 0;
    min-height: 220px;
    padding: 24px;

    background-color: var(--bg-secondary);

    border: 1px solid var(--border-color);
    border-radius: 12px;

    transition:
        transform 0.3s ease,
        border-color 0.3s ease,
        box-shadow 0.3s ease;
}

.projeto-card:hover {
    transform: translateY(-6px);

    border-color: var(--color-primary);

    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.projeto-card h3 {
    color: var(--text-primary);

    font-size: 20px;
    line-height: 1.4;
}

.projeto-card p {
    color: var(--text-secondary);

    font-size: 15px;
    line-height: 1.7;
}

.tecnologias {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;

    margin-top: auto;
}

.tecnologias span {
    display: inline-flex;
    align-items: center;

    padding: 6px 12px;

    background-color: var(--tag-bg);
    color: var(--tag-text);

    border-radius: 6px;

    font-size: 13px;
    font-weight: 500;
}

.filtros-projetos {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;

    margin-top: 24px;
}

.filtro-btn {
    padding: 9px 16px;

    background-color: var(--bg-secondary);
    color: var(--text-secondary);

    border: 1px solid var(--border-color);
    border-radius: 8px;

    font-size: 13px;

    transition:
        background-color 0.3s ease,
        color 0.3s ease,
        border-color 0.3s ease;
}

.filtro-btn:hover {
    border-color: var(--color-primary);
    color: var(--text-primary);
}

.filtro-btn.ativo {
    background-color: var(--color-primary);
    color: #FFFFFF;

    border-color: var(--color-primary);
}

.sem-projetos {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;

    margin-top: 32px;
    padding: 48px 24px;

    background-color: var(--bg-secondary);

    border: 1px dashed var(--border-color);
    border-radius: 12px;

    text-align: center;
}

.sem-projetos svg {
    width: 40px;
    height: 40px;

    color: var(--color-accent);
}

.sem-projetos h3 {
    color: var(--text-primary);
    font-size: 20px;
}

.sem-projetos p {
    color: var(--text-secondary);
    font-size: 15px;
}


/* ========================================
   11. HABILIDADES
======================================== */

.habilidades-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;

    margin-top: 32px;
    padding: 0;

    list-style: none;
}

.habilidade-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;

    min-width: 0;
    min-height: 165px;
    padding: 24px 16px;

    background-color: var(--bg-secondary);

    border: 1px solid var(--border-color);
    border-radius: 12px;

    text-align: center;

    transition:
        transform 0.3s ease,
        border-color 0.3s ease,
        box-shadow 0.3s ease;
}

.habilidade-card:hover {
    transform: translateY(-6px);

    border-color: var(--color-primary);

    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.habilidade-icone {
    display: flex;
    align-items: center;
    justify-content: center;

    width: 60px;
    height: 60px;

    background-color: var(--tag-bg);
    color: var(--color-accent);

    border: 1px solid var(--border-color);
    border-radius: 14px;
}

.habilidade-icone svg {
    width: 34px;
    height: 34px;
}

.habilidade-card h3 {
    color: var(--text-primary);

    font-size: 17px;
    font-weight: 600;
    line-height: 1.4;
}

.habilidade-categoria {
    color: var(--text-secondary);
    font-size: 12px;
}


/* ========================================
   12. CERTIFICAÇÕES
======================================== */

/* grid-auto-columns define 4 cartões visíveis; as media queries ajustam para 2 ou 1. */

.certificacoes-carrossel {
    display: grid;
    grid-template-columns: 44px minmax(0, 1fr) 44px;
    align-items: center;
    gap: 12px;

    margin-top: 32px;
}

.certificacoes-janela {
    min-width: 0;

    overflow-x: auto;
    overflow-y: hidden;

    scroll-behavior: smooth;
    scroll-snap-type: x mandatory;

    scrollbar-width: none;
}

.certificacoes-janela::-webkit-scrollbar {
    display: none;
}

.certificacoes-trilha {
    --espaco-certificacoes: 20px;

    display: grid;
    grid-auto-flow: column;

    grid-auto-columns: calc(
        (100% - 3 * var(--espaco-certificacoes)) / 4
    );

    gap: var(--espaco-certificacoes);
}

.certificacao-card {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;

    min-width: 0;
    min-height: 290px;
    padding: 24px;

    background-color: var(--bg-secondary);

    border: 1px solid var(--border-color);
    border-radius: 12px;

    scroll-snap-align: start;

    transition:
        border-color 0.3s ease,
        box-shadow 0.3s ease;
}

.certificacao-card:hover {
    border-color: var(--color-primary);

    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.10);
}

.certificacao-icone {
    display: flex;
    align-items: center;
    justify-content: center;

    width: 56px;
    height: 56px;

    flex-shrink: 0;

    background-color: var(--tag-bg);
    color: var(--color-accent);

    border: 1px solid var(--border-color);
    border-radius: 14px;
}

.certificacao-icone svg {
    width: 30px;
    height: 30px;
}

.certificacao-card h3 {
    color: var(--text-primary);

    font-size: 18px;
    font-weight: 700;
    line-height: 1.4;
}

.certificacao-card p {
    color: var(--text-secondary);

    font-size: 14px;
    line-height: 1.6;
}

.certificacao-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    width: 100%;

    margin-top: auto;
    padding: 10px 12px;

    color: var(--color-primary);

    border: 1px solid var(--color-primary);
    border-radius: 8px;

    font-size: 14px;
    font-weight: 600;
    text-align: center;
    text-decoration: none;

    transition:
        background-color 0.3s ease,
        color 0.3s ease;
}

.certificacao-link:hover {
    background-color: var(--color-primary);
    color: #FFFFFF;
}

.certificacao-seta {
    display: flex;
    align-items: center;
    justify-content: center;

    width: 44px;
    height: 44px;

    background-color: var(--bg-secondary);
    color: var(--color-accent);

    border: 1px solid var(--border-color);
    border-radius: 50%;

    font-size: 20px;

    transition:
        background-color 0.3s ease,
        border-color 0.3s ease;
}

.certificacao-seta:hover:not(:disabled) {
    background-color: var(--tag-bg);
    border-color: var(--color-primary);
}

.certificacao-seta:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.certificacoes-indicadores {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;

    margin-top: 24px;
}

.certificacao-indicador {
    width: 9px;
    height: 9px;

    padding: 0;

    background-color: var(--border-color);

    border: none;
    border-radius: 50%;

    transition:
        width 0.3s ease,
        background-color 0.3s ease;
}

.certificacao-indicador.ativo {
    width: 24px;

    background-color: var(--color-primary);
    border-radius: 20px;
}


/* ========================================
   13. CONTATO
======================================== */

.contato-grid {
    display: grid;
    grid-template-columns:
        minmax(0, 1.5fr)
        minmax(0, 1fr);

    align-items: start;
    gap: 48px;

    margin-top: 32px;
}

.form-contato {
    display: flex;
    flex-direction: column;
    gap: 20px;

    min-width: 0;
    max-width: 650px;
}

.campo {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.campo label {
    color: var(--text-primary);

    font-size: 14px;
    font-weight: 600;
}

.campo input,
.campo textarea {
    display: block;

    width: 100%;
    padding: 14px 16px;

    background-color: var(--bg-secondary);
    color: var(--text-primary);

    border: 1px solid var(--border-color);
    border-radius: 8px;

    font-size: 16px;

    transition:
        border-color 0.3s ease,
        box-shadow 0.3s ease;
}

.campo input::placeholder,
.campo textarea::placeholder {
    color: var(--text-secondary);
    opacity: 0.8;
}

.campo textarea {
    resize: vertical;
    min-height: 150px;
}

.campo input:focus,
.campo textarea:focus {
    outline: none;

    border-color: var(--color-primary);

    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.form-contato .botao {
    width: 100%;
}

.resposta-contato {
    color: var(--color-accent);

    font-size: 14px;
    line-height: 1.6;
}

.resposta-contato:empty {
    display: none;
}

.textarea-container {
    position: relative;
    width: 100%;
}

.textarea-container textarea {
    padding-bottom: 40px;
}

.contador-mensagem {
    position: absolute;

    right: 16px;
    bottom: 12px;

    padding: 2px 4px;

    background-color: var(--bg-secondary);
    color: var(--text-secondary);

    font-size: 12px;

    pointer-events: none;
}

.form-contato .botao:disabled {
    opacity: 0.65;
    cursor: wait;
    transform: none;
}

.resposta-contato[data-tipo="sucesso"] {
    color: var(--color-accent);
}

.resposta-contato[data-tipo="erro"] {
    color: #EF4444;
}

.contato-detalhes {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contato-bloco {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.contato-bloco h3 {
    color: var(--text-primary);
    font-size: 22px;
}

.contato-email {
    color: var(--color-accent);

    text-decoration: none;
    overflow-wrap: anywhere;
}

.contato-email:hover {
    text-decoration: underline;
}

.redes-sociais {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.rede-social {
    display: flex;
    align-items: center;
    gap: 12px;

    color: var(--text-primary);

    font-weight: 500;
    text-decoration: none;

    transition: color 0.3s ease;
}

.rede-social-icone {
    display: flex;
    align-items: center;
    justify-content: center;

    width: 46px;
    height: 46px;

    background-color: var(--bg-secondary);

    border: 1px solid var(--border-color);
    border-radius: 10px;

    transition:
        border-color 0.3s ease,
        transform 0.3s ease;
}

.rede-social-icone svg {
    width: 24px;
    height: 24px;
}

.rede-social:hover {
    color: var(--color-accent);
}

.rede-social:hover .rede-social-icone {
    border-color: var(--color-accent);
    transform: translateY(-3px);
}


/* ========================================
   14. RODAPÉ
======================================== */

.rodape {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;

    padding: 40px 24px;

    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);

    text-align: center;
}

.rodape-marca {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;

    color: var(--text-primary);

    font-size: 18px;
    font-weight: 700;
}

.rodape-icone {
    color: var(--color-accent);

    font-family: Consolas, monospace;
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -2px;
}

.rodape p {
    color: var(--text-secondary);

    font-size: 14px;
    line-height: 1.7;
}


/* ========================================
   15. VOLTAR AO TOPO
======================================== */

.botao-topo {
    position: fixed;

    bottom: 24px;
    right: 24px;

    z-index: 900;

    display: flex;
    align-items: center;
    justify-content: center;

    width: 52px;
    height: 52px;
    padding: 0;

    background-color: var(--color-primary);
    color: #FFFFFF;

    border: none;
    border-radius: 50%;

    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);

    transition:
        background-color 0.3s ease,
        transform 0.3s ease;
}

.botao-topo svg {
    width: 20px;
    height: 20px;

    stroke: currentColor;
    stroke-width: 2.6;
    stroke-linecap: round;
    stroke-linejoin: round;

    fill: none;
}

.botao-topo:hover {
    background-color: var(--color-accent);
    transform: translateY(-4px);
}


/* ========================================
   16. ANIMAÇÕES
======================================== */

html.animacoes-ativas .revelar {
    opacity: 0;
    transform: translateY(30px);

    transition:
        opacity 0.7s ease,
        transform 0.7s ease;
}

html.animacoes-ativas .revelar.visivel {
    opacity: 1;
    transform: translateY(0);
}


/* ========================================
   17. RESPONSIVIDADE
======================================== */

/* As regras móveis ficam juntas no final para não sobrescrever o desktop por acidente. */

@media (max-width: 1100px) {

    header {
        gap: 20px;
        padding: 16px 24px;
    }

    header nav {
        gap: 16px;
    }

    .marca-nome {
        font-size: 19px;
    }
}

@media (max-width: 900px) {

    header {
        flex-wrap: wrap;
        justify-content: space-between;
    }

    header nav {
        order: 3;

        width: 100%;
        justify-content: center;
    }

    .projetos-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .habilidades-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .certificacoes-trilha {
        grid-auto-columns: calc(
            (100% - var(--espaco-certificacoes)) / 2
        );
    }
}

@media (max-width: 800px) {

    .sobre-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .sobre-foto {
        max-width: 300px;
        margin: 0 auto;
    }

    #sobre.secao-sobre {
        padding: 64px 0;
    }

    .sobre-conteudo p {
        font-size: 16px;
    }

    .contato-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .form-contato {
        max-width: none;
    }
}

@media (max-width: 600px) {

    main {
        width: calc(100% - 40px);
    }

    main section {
        padding: 64px 0;
    }

    html {
        scroll-padding-top: 20px;
    }

    header {
        position: relative;

        flex-direction: column;
        align-items: center;
        gap: 16px;

        padding: 20px;
    }

    header nav {
        order: 0;

        justify-content: center;
        gap: 12px 16px;
    }

    header nav a {
        font-size: 13px;
    }

    .marca-icone {
        font-size: 26px;
    }

    .marca-nome {
        font-size: 20px;
    }

    #inicio.hero {
        min-height: auto;
        padding: 70px 0;
    }

    #inicio .hero-nome {
        font-size: clamp(36px, 8vw, 48px);
        letter-spacing: -1px;
    }

    #inicio .hero-titulo {
        font-size: clamp(24px, 6vw, 30px);
    }

    #inicio .hero-descricao {
        font-size: 16px;
    }

    .hero-acoes {
        width: 100%;
        flex-direction: column;
    }

    .hero-acoes .botao {
        width: 100%;
    }

    .sobre-foto {
        max-width: 280px;
    }

    .projetos-grid {
        grid-template-columns: 1fr;
    }

    .habilidades-grid {
        gap: 12px;
    }

    .habilidade-card {
        min-height: 145px;
        padding: 18px 12px;
    }

    .habilidade-icone {
        width: 52px;
        height: 52px;
    }

    .habilidade-icone svg {
        width: 30px;
        height: 30px;
    }

    .certificacoes-carrossel {
        grid-template-columns: 32px minmax(0, 1fr) 32px;
        gap: 8px;
    }

    .certificacoes-trilha {
        grid-auto-columns: 100%;
    }

    .certificacao-seta {
        width: 32px;
        height: 32px;

        font-size: 16px;
    }

    .certificacao-card {
        min-height: 260px;
        padding: 20px;
    }

    .botao-topo {
        right: 16px;
        bottom: 16px;

        width: 46px;
        height: 46px;
    }
}

@media (max-width: 380px) {

    .habilidades-grid {
        grid-template-columns: 1fr;
    }

    .sobre-foto {
        max-width: 260px;
    }

    .marca-nome {
        font-size: 18px;
    }

    .filtros-projetos {
        gap: 8px;
    }

    .filtro-btn {
        padding: 8px 12px;
    }
}

@media (max-width: 600px) {

    .experiencia-lista {
        padding-left: 22px;
    }

    .experiencia-item::before {
        left: -31px;
    }

    .experiencia-card {
        padding: 20px;
    }

    .experiencia-card h3 {
        font-size: 19px;
    }

    .experiencia-atividades li {
        font-size: 14px;
    }
}

@media (max-width: 900px) {

    header {
        display: grid;
        grid-template-columns: minmax(0, 1fr) auto auto;
        align-items: center;
        gap: 12px;

        position: sticky;
        top: 0;

        padding: 14px 20px;
    }

    .botao-menu {
        display: flex;
    }

    header nav#menu-navegacao {
        display: none;

        position: absolute;
        top: calc(100% + 8px);
        right: 20px;
        z-index: 1001;

        width: min(320px, calc(100vw - 40px));
        padding: 12px;

        background-color: var(--bg-secondary);
        border: 1px solid var(--border-color);
        border-radius: 12px;

        box-shadow: 0 12px 32px rgba(0, 0, 0, 0.20);
    }

    header nav#menu-navegacao.menu-aberto {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
    }

    header nav#menu-navegacao a {
        display: block;
        padding: 12px 16px;

        color: var(--text-primary);
        text-decoration: none;

        border-radius: 8px;

        transition:
            background-color 0.3s ease,
            color 0.3s ease;
    }

    header nav#menu-navegacao a:hover {
        background-color: var(--tag-bg);
        color: var(--color-accent);
    }

    html {
        scroll-padding-top: 90px;
    }

    main section {
        scroll-margin-top: 90px;
    }
}

@media (max-width: 600px) {

    .marca-link {
        gap: 6px;
    }

    .marca-icone {
        font-size: 23px;
    }

    .marca-nome {
        font-size: 16px;
    }

    .marca-nome span {
        display: none;
    }

    header .botao-tema {
        width: 44px;
        height: 44px;
        padding: 10px;
    }

    header .botao-tema span {
        display: none;
    }
}


/* ========================================
   18. ACESSIBILIDADE E MOVIMENTO REDUZIDO
======================================== */

.marca-link:focus-visible,
header nav a:focus-visible,
.botao-tema:focus-visible,
.botao:focus-visible,
.filtro-btn:focus-visible,
.certificacao-seta:focus-visible,
.certificacao-indicador:focus-visible,
.certificacao-link:focus-visible,
.certificacoes-janela:focus-visible,
.contato-email:focus-visible,
.rede-social:focus-visible,
.botao-topo:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 4px;
}

@media (prefers-reduced-motion: reduce) {

    html {
        scroll-behavior: auto;
    }

    html.animacoes-ativas .revelar,
    html.animacoes-ativas .revelar.visivel {
        opacity: 1;
        transform: none;
        transition: none;
    }

    body,
    .marca-icone,
    header nav a,
    .botao-tema,
    .botao,
    .projeto-card,
    .filtro-btn,
    .habilidade-card,
    .certificacao-card,
    .certificacao-link,
    .certificacao-seta,
    .certificacao-indicador,
    .campo input,
    .campo textarea,
    .rede-social,
    .rede-social-icone,
    .botao-topo {
        transition: none;
    }

    .botao:hover,
    .projeto-card:hover,
    .habilidade-card:hover,
    .rede-social:hover .rede-social-icone,
    .botao-topo:hover,
    .marca-link:hover .marca-icone {
        transform: none;
    }

    .certificacoes-janela {
        scroll-behavior: auto;
    }
}

@media (prefers-reduced-motion: reduce) {

    .experiencia-card {
        transition: none;
    }
}

.botao-menu:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 4px;
}

@media (prefers-reduced-motion: reduce) {

    .botao-menu,
    .menu-linha,
    header nav#menu-navegacao a {
        transition: none;
    }
}