/* =========================================
   VARIÁVEIS CSS (PALETA DO LINUX MINT) E RESETS
   ========================================= */

/* Definindo Modo Claro (Padrão) */
:root {
    --bg-color: #f5f7f6;
    /* Fundo principal claro */
    --bg-alt: #ffffff;
    /* Fundo alternativo cartões */
    --text-color: #2c3e38;
    /* Cinza escuro/esverdeado para o texto */
    --text-muted: #5b6e65;
    --primary-color: #5bdc8d;
    /* Verde Mint moderno */
    --primary-hover: #48c47b;
    --border-color: #d1d9d5;
    --error-color: #e74c3c;
    --navbar-bg: rgba(255, 255, 255, 0.95);

    /* Variáveis de layout */
    --container-width: 1000px;
}

/* Definindo Modo Escuro (Acionado pelo JS via atributo) */
[data-theme="dark"] {
    --bg-color: #1a1e1c;
    /* Cinza escuro (estilo terminal) */
    --bg-alt: #242a27;
    --text-color: #e0e8e4;
    --text-muted: #9baaa2;
    --primary-color: #6de29d;
    --primary-hover: #5bdc8d;
    --border-color: #3b4540;
    --navbar-bg: rgba(36, 42, 39, 0.95);
}

/* Reset básico para padronizar renderização de navegadores */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Ativa a rolagem suave ao clicar nos links âncora */
html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
    /* Transição suave na troca de tema */
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* =========================================
   CABEÇALHO E NAVEGAÇÃO
   ========================================= */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: var(--navbar-bg);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 20px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.2s;
}

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

.btn-theme {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 8px 12px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    transition: 0.3s;
}

.btn-theme:hover {
    background: var(--bg-alt);
    border-color: var(--primary-color);
}

/* =========================================
   ESTRUTURA DAS SEÇÕES
   ========================================= */
.section {
    padding: 100px 0 60px 0;
    /* Padding superior compensa a barra fixa */
}

.bg-alt {
    background-color: var(--bg-alt);
}

h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    border-bottom: 3px solid var(--primary-color);
    display: inline-block;
}

h3 {
    margin-bottom: 10px;
    color: var(--primary-color);
}

/* =========================================
   SOBRE MIM
   ========================================= */
.about-wrapper {
    display: flex;
    align-items: center;
    gap: 40px;
}

.about-img {
    flex-shrink: 0;
    width: 250px;
}

.about-img img {
    width: 100%;
    height: auto;
    border-radius: 50%;
    border: 3px solid var(--primary-color);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.about-content {
    flex-grow: 1;
}

/* =========================================
   FORMAÇÃO, CONHECIMENTOS E HOBBIES
   ========================================= */
.education-card {
    background-color: var(--bg-color);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-bottom: 30px;
}

.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    list-style: none;
}

.skills-list li {
    background-color: var(--bg-color);
    padding: 8px 15px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    font-size: 0.9rem;
    font-weight: bold;
}

.hobbies {
    margin-top: 20px;
}

.hobbies ul {
    list-style: none;
}

.hobbies li {
    margin-bottom: 8px;
}

/* =========================================
   PORTFÓLIO (CSS GRID)
   ========================================= */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.project-card {
    background-color: var(--bg-alt);
    padding: 25px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s;
}

.project-card:hover {
    transform: translateY(-5px);
}

.project-card p {
    flex-grow: 1;
    /* Faz o botão empurrar para o fundo */
    margin-bottom: 20px;
    color: var(--text-muted);
}

.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: #1a1e1c;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    text-align: center;
    border: none;
    cursor: pointer;
    transition: background 0.3s;
}

.btn:hover {
    background-color: var(--primary-hover);
}

/* =========================================
   FORMULÁRIO DE CONTATO E MODAL
   ========================================= */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 5px;
    font-weight: bold;
}

.form-group input,
.form-group textarea {
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: inherit;
    font-size: 1rem;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.error-msg {
    color: var(--error-color);
    font-size: 0.85rem;
    margin-top: 5px;
    display: none;
    /* Oculto por padrão, ativado pelo JS */
}

.form-group.invalid input,
.form-group.invalid textarea {
    border-color: var(--error-color);
}

.form-group.invalid .error-msg {
    display: block;
    /* Mostra erro se for inválido */
}

/* MODAL */
.modal {
    display: none;
    /* Oculto por padrão */
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 2000;
    justify-content: center;
    align-items: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background-color: var(--bg-alt);
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    max-width: 400px;
    width: 90%;
}

.modal-content h3 {
    margin-bottom: 10px;
}

.modal-content button {
    margin-top: 20px;
}

/* =========================================
   RODAPÉ
   ========================================= */
footer {
    background-color: var(--navbar-bg);
    color: var(--text-muted);
    text-align: center;
    padding: 20px 0;
    border-top: 1px solid var(--border-color);
}

/* =========================================
   RESPONSIVIDADE (MOBILE-FRIENDLY)
   ========================================= */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        height: auto;
        padding: 15px 0;
        gap: 15px;
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .section {
        padding-top: 150px;
        /* Compensa o menu mobile mais alto */
    }

    .about-wrapper {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
}