/* =========================================================
   Paleta & configuração geral
   ========================================================= */
@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&display=swap');

:root {
    /* Roxos (primários) */
    --purple-900: #2e0845;   /* bem escuro, quase berinjela   */
    --purple-700: #4c1d95;   /* roxo profundo / masculino     */
    --purple-500: #7042d9;   /* roxo médio para detalhes      */
    --purple-300: #9b7cf5;   /* highlight / hover             */

    /* Cinzas neutros */
    --gray-900: #0f0f11;     /* fundo principal               */
    --gray-700: #232329;     /* cards / seções                */
    --gray-100: #f3f4f6;     /* textos claros                 */

    /* Outros */
    --radius-lg : 0.75rem;
    --transition-fast: 200ms ease-in-out;
}

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

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--gray-100);
    background-color: var(--gray-900);
    scroll-behavior: smooth;
}

/* =========================================================
   Layout utilitário
   ========================================================= */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1rem;
}

section {
    padding: 3rem 0;
}

h1, h2, h3 {
    font-weight: 700;
}

h2 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    border-left: 5px solid var(--purple-500);
    padding-left: 0.6rem;
}

h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--purple-300);
}

/* =========================================================
   Cabeçalho & Navegação
   ========================================================= */
header {
    background-image: url('../img/headerIndex.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    border-bottom: 4px solid var(--purple-700);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
    color: var(--gray-100);
    position: relative;
}

/* Sobreposição escura para melhorar o contraste */
header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(20, 0, 40, 0.6);
    z-index: 0;
}

#header {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 2.5rem 1rem;
}


#header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    letter-spacing: 1px;
}

#header p {
    font-size: 1rem;
    color: var(--purple-300);
    max-width: 600px;
    margin: 0.5rem auto 1.5rem;
}

nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.25rem;
}

nav a {
    position: relative;
    font-weight: 700;
    text-decoration: none;
    color: var(--gray-100);
    padding: 0.5rem 0;
    transition: color var(--transition-fast);
}

nav a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 0;
    height: 2px;
    background-color: var(--purple-300);
    transition: width var(--transition-fast);
}

nav a:hover,
nav a:focus {
    color: var(--purple-300);
}

nav a:hover::after,
nav a:focus::after {
    width: 100%;
}

/* =========================================================
   Listas & conteúdo de seções
   ========================================================= */
ul, ol {
    list-style: none;
}

section#HabExp .container > div {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

section#HabExp div > div,
section#Projetos ol li > div {
    background-color: var(--gray-700);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 8px rgba(0,0,0,0.35);
    transition: transform var(--transition-fast);
}

section#HabExp div > div:hover,
section#Projetos ol li > div:hover {
    transform: translateY(-6px);
}

section#HabExp ul li,
section#Projetos p {
    margin-left: 1rem;
    position: relative;
}

section#HabExp ul li::before {
    content: '▹';
    position: absolute;
    left: -1rem;
    color: var(--purple-500);
}

section#Projetos ol {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    counter-reset: proj;
    align-items: stretch;
}

section#Projetos ol li {
    counter-increment: proj;
    height: 100%;
}

section#Projetos ol li > div {
    background-color: var(--gray-700);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 8px rgba(0,0,0,0.35);
    transition: transform 200ms ease-in-out;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    height: 100%;
}


section#Projetos ol li h3::before {
    content: counter(proj, decimal-leading-zero) '. ';
    color: var(--purple-500);
}

h3 a:link,
h3 a::after{
    text-decoration: none;
    color: inherit;
}

h3 a:hover {
    color: var(--purple-500);
}

/* =========================================================
   Rodapé
   ========================================================= */
footer {
    background-color: var(--purple-900);
    border-top: 4px solid var(--purple-700);
    margin-top: 3rem;
    padding: 3rem 1rem 2rem;
}

footer h2 {
    text-align: center;
    margin-bottom: 2rem;
}

footer #Contato {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

footer #Contato div {
    background-color: var(--gray-700);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: 0 4px 8px rgba(0,0,0,0.35);
}

footer #Contato img {
    width: 48px;
    height: 48px;
    margin-bottom: 0.75rem;
    filter: grayscale(100%) opacity(80%);
    transition: transform var(--transition-fast), filter var(--transition-fast);
}

footer #Contato div:hover img {
    transform: scale(1.1);
    filter: grayscale(0%) opacity(100%);
}

/* =========================================================
   Responsividade extra
   ========================================================= */
@media (max-width: 600px) {
    #header h1 {
        font-size: 1.9rem;
    }

    h2 {
        font-size: 1.4rem;
    }

    nav a {
        font-size: 0.9rem;
    }
}