/* ============================================== */
/* 0. CSS RESET & VARIÁVEIS GLOBAIS */
/* ============================================== */
:root {
    --primary-color: #007BFF; /* Azul de destaque */
    --secondary-color: #6C757D; /* Cinza secundário */
    --accent-color: #FFC107; /* Amarelo para ênfase (opcional) */

    --text-dark: #212529;
    --text-light: #F8F9FA;

    --bg-white: #FFFFFF;
    --bg-light: #F8F9FA; /* Cor de fundo para seções claras */
    --bg-dark: #343A40; /* Cor de fundo para seções escuras */

    --border-radius: 8px;
    --section-padding: 80px 0;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-dark);
}

a {
    text-decoration: none;
    color: var(--primary-color);
}

ul {
    list-style: none;
    padding: 0;
}

/* CONTAINER E SEÇÕES GERAIS */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: var(--section-padding);
}

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

.bg-dark {
    background-color: var(--bg-dark);
    color: var(--text-light);
}

.bg-dark h2, .bg-dark p {
    color: var(--text-light);
}

.flow > * + * {
    margin-top: 1em; /* Espaçamento entre parágrafos e elementos */
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 40px;
    text-align: center;
}

/* ============================================== */
/* 1. BOTÕES (BUTTONS) */
/* ============================================== */
.button {
    display: inline-block;
    padding: 10px 25px;
    border-radius: 50px;
    font-weight: 600;
    transition: background-color 0.3s, color 0.3s, transform 0.2s;
    border: 2px solid transparent;
    text-align: center;
}

.button:hover {
    transform: translateY(-2px);
}

.button.primary {
    background-color: var(--primary-color);
    color: var(--bg-white);
}

.button.primary:hover {
    background-color: #0056b3; /* Tom mais escuro */
}

.button.secondary {
    background-color: var(--bg-white);
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.button.secondary:hover {
    background-color: var(--primary-color);
    color: var(--bg-white);
}

.button.primary-alt {
    background-color: var(--accent-color);
    color: var(--text-dark);
    border-color: var(--accent-color);
}

.button.primary-alt:hover {
    background-color: #d8a000;
}

/* ============================================== */
/* 2. HERO SECTION */
/* ============================================== */
.hero-section {
    padding: 120px 20px;
    text-align: center;
    background: var(--bg-light);
}

.hero-section h1 {
    font-size: 4rem;
    margin-bottom: 15px;
}

.role-tag {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 10px;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 1px;
}

.tagline {
    font-size: 1.25rem;
    color: var(--secondary-color);
    max-width: 700px;
    margin: 0 auto 30px;
}

.cta-links a {
    margin: 0 10px;
}

/* ============================================== */
/* 3. EXPERIENCE TIMELINE */
/* ============================================== */
.job-timeline {
    display: flex;
    flex-direction: column;
    gap: 30px;
    max-width: 800px;
    margin: 0 auto;
}

.job-card {
    background: var(--bg-white); /* Alterado de var(--bg-light) para var(--bg-white) para contraste na seção bg-light */
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    border-left: 5px solid var(--primary-color); 
    transition: box-shadow 0.3s, transform 0.3s;
}

.job-card:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transform: translateX(5px);
}

.job-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.job-card h3 {
    margin: 0;
    color: var(--primary-color);
    font-size: 1.4rem;
}

.job-period {
    font-size: 0.9rem;
    color: #64748B;
    font-weight: 400;
}

.company-name {
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-dark);
    font-style: italic;
    border-bottom: 1px dashed #E2E8F0;
    padding-bottom: 5px;
}

.job-responsibilities {
    list-style: none;
    padding-left: 0;
}

.job-responsibilities li {
    position: relative;
    margin-bottom: 10px;
    font-size: 0.95rem;
    padding-left: 1.5em; /* Espaço para o bullet */
}

.job-responsibilities li::before {
    content: "•";
    color: var(--primary-color);
    font-weight: 700;
    position: absolute;
    left: 0;
}

/* ============================================== */
/* 4. SKILLS / EXPERTISE (GRID FIX) */
/* ============================================== */
.skills-grid {
    display: grid;
    /* 3 colunas, mínimo de 300px por coluna, espaçamento de 30px */
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); 
    gap: 30px;
    margin-top: 30px;
}

.skill-card {
    background: var(--bg-white); 
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border-top: 3px solid var(--primary-color);
}

.skill-card h3 {
    font-size: 1.25rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.skill-card ul {
    padding-left: 20px;
    list-style-type: square;
    color: var(--text-dark);
}

.skill-card li {
    margin-bottom: 8px;
    font-size: 0.95rem;
}

/* ============================================== */
/* 5. WORK HIGHLIGHTS & RESEARCH (LIST FIX) */
/* ============================================== */
.project-card-list {
    display: flex;
    flex-direction: column;
    gap: 40px;
    max-width: 900px;
    margin: 0 auto;
}

.project-card {
    background: var(--bg-white); /* Alterado para contraste */
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.project-card h3 {
    margin: 0;
    font-size: 1.4rem;
}

.tag {
    background-color: var(--accent-color);
    color: var(--text-dark);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
}

.project-card p {
    margin-bottom: 15px;
}

.project-link {
    font-weight: 600;
}

/* ============================================== */
/* 6. CONTACT SECTION (GRID FIX) */
/* ============================================== */
.contact-grid {
    text-align: center;
    max-width: 700px;
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.contact-btn {
    border-color: var(--text-light) !important;
}

.bg-dark .contact-btn.secondary {
    background-color: var(--bg-dark);
    color: var(--text-light);
    border-color: var(--text-light);
}

.bg-dark .contact-btn.secondary:hover {
    background-color: var(--text-light);
    color: var(--bg-dark);
}

.bg-dark .contact-btn.primary-alt {
    background-color: var(--accent-color);
    color: var(--text-dark);
}


/* ============================================== */
/* 7. FOOTER */
/* ============================================== */
footer {
    padding: 20px 0;
    text-align: center;
    border-top: 1px solid #E2E8F0;
    background-color: var(--bg-white);
    font-size: 0.85rem;
    color: var(--secondary-color);
}

/* ============================================== */
/* 8. MEDIA QUERIES (RESPONSIVIDADE) */
/* ============================================== */
@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }

    .hero-section h1 {
        font-size: 3rem;
    }

    h2 {
        font-size: 2rem;
        margin-bottom: 30px;
    }

    /* Experiência - Stacked Header */
    .job-header {
        flex-direction: column;
        align-items: flex-start;
    }
    .job-period {
        margin-top: 5px;
    }

    /* Skills - Grid de 1 ou 2 colunas */
    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }

    /* Contato */
    .contact-links {
        flex-direction: column;
        gap: 10px;
    }

    .button {
        width: 100%;
    }
}