:root {
    --bg: #0a0a0f;
    --bg2: #111118;
    --bg3: #16161f;
    --border: rgba(255,255,255,0.07);
    --border-accent: rgba(99,179,237,0.35);
    --text: #e8e8f0;
    --muted: #7a7a9a;
    --accent: #63b3ed;
    --accent2: #9f7aea;
    --accent3: #68d391;
    --mono: 'Space Mono', monospace;
    --sans: 'DM Sans', sans-serif;
    --nav-h: 64px;
  }
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.7;
    overflow-x: hidden;
  }
 
  /* ── NAV ── */
  nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    height: var(--nav-h);
    background: rgba(10,10,15,0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center;
    padding: 0 1rem;
    justify-content: space-between;
  }
  .nav-logo {
    font-family: var(--mono);
    font-size: 13px;
    color: var(--accent);
    letter-spacing: 0.04em;
  }
  .nav-links {
    display: flex; gap: 2px; list-style: none;
  }
  .nav-links a {
    font-family: var(--mono);
    font-size: 10px;
    color: var(--muted);
    text-decoration: none;
    padding: 5px 8px;
    border: 1px solid transparent;
    border-radius: 4px;
    transition: all 0.2s;
    letter-spacing: 0.04em;
    text-transform: uppercase;
  }
  .nav-links a:hover,
  .nav-links a.active {
    color: var(--accent);
    border-color: var(--border-accent);
    background: rgba(99,179,237,0.06);
  }
/* Esconde o hambúrguer por padrão (Desktop) */
.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
  z-index: 101; /* Fica acima do menu aberto */
}

.hamburger span {
  display: block;
  width: 18px;
  height: 1.5px;
  background-color: var(--muted);
  margin: 4px 0;
  transition: all 0.2s ease;
}

/* Regras para Telas Mobile (Abaixo de 768px) */
@media (max-width: 768px) {
  .hamburger {
    display: block; /* Mostra o botão no mobile */
  }

  .nav-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
    
    /* Posicionamento do menu lateral/suspenso */
    position: fixed;
    top: 0;
    right: -100%; /* Começa escondido na direita */
    width: 200px; /* Largura sutil pro menu */
    height: 100vh;
    padding: calc(var(--nav-h) + 1.5rem) 1.5rem 1.5rem 1.5rem;
    
    /* Mantendo a identidade visual do seu projeto */
    background: rgba(10, 10, 15, 0.95); 
    backdrop-filter: blur(12px);
    border-left: 1px solid var(--border);
    transition: right 0.3s ease;
  }

  /* Quando o menu estiver ativo, ele desliza para a tela */
  .nav-links.open {
    right: 0;
  }

  .nav-links a {
    display: block;
    font-size: 11px; /* Um pouquinho maior no mobile para facilitar o toque */
    padding: 8px 12px;
  }

  /* Animação do Hambúrguer virando "X" */
  .hamburger.open span:nth-child(1) {
    transform: translateY(5.5px) rotate(45deg);
    background-color: var(--accent);
  }
  .hamburger.open span:nth-child(2) {
    opacity: 0;
  }
  .hamburger.open span:nth-child(3) {
    transform: translateY(-5.5px) rotate(-45deg);
    background-color: var(--accent);
  }
}
 
  /* ── SECTIONS ── */
  section {
    min-height: 100vh;
    padding: calc(var(--nav-h) + 2.5rem) 1.25rem 3rem;
    display: flex; align-items: center;
  }
  section:nth-child(even) { background: var(--bg2); }
  .section-inner { width: 100%; max-width: 900px; margin: 0 auto; }
  .section-tag {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--accent);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
    opacity: 0.8;
  }
  h1, h2 {
    font-family: var(--mono);
    font-weight: 700;
    color: var(--text);
    line-height: 1.2;
  }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.4rem; margin-bottom: 2rem; }
  p { color: var(--muted); margin-bottom: 1rem; }
  strong { color: var(--text); font-weight: 500; }
 
  /* ── HERO ── */
  #hero { min-height: 100vh; position: relative; overflow: hidden; }
  .hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: center;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
  }
  .hero-greeting {
    font-family: var(--mono);
    font-size: 13px;
    color: var(--accent);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 1rem;
    opacity: 0;
    animation: fadeUp 0.6s 0.2s forwards;
  }
  .hero-name {
    opacity: 0;
    animation: fadeUp 0.6s 0.4s forwards;
    margin-bottom: 1rem;
  }
  .hero-name span { color: var(--accent2); }
  .hero-role {
    font-family: var(--mono);
    font-size: 0.85rem;
    color: var(--muted);
    margin-bottom: 1.5rem;
    opacity: 0;
    animation: fadeUp 0.6s 0.6s forwards;
    border-left: 2px solid var(--accent);
    padding-left: 1rem;
    line-height: 1.8;
  }
  .hero-desc {
    opacity: 0;
    animation: fadeUp 0.6s 0.8s forwards;
    max-width: 500px;
  }
  .hero-cta {
    display: flex; gap: 10px; flex-wrap: wrap;
    margin-top: 2rem;
    opacity: 0;
    animation: fadeUp 0.6s 1s forwards;
  }
  .btn {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 10px 18px;
    border-radius: 4px;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid var(--accent);
  }
  .btn-primary {
    background: var(--accent);
    color: var(--bg);
  }
  .btn-primary:hover { background: transparent; color: var(--accent); }
  .btn-outline { background: transparent; color: var(--accent); }
  .btn-outline:hover { background: rgba(99,179,237,0.1); }
 
  /* Avatar — oculto em mobile, visível em desktop */
  .avatar-wrap {
    display: none;
  }
  .avatar-ring {
    width: 200px; height: 200px;
    border-radius: 50%;
    border: 2px solid var(--border-accent);
    padding: 6px;
    background: var(--bg3);
    position: relative;
  }
  .avatar-inner {
    width: 100%; height: 100%;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--bg3) 0%, #1a1a2e 100%);
    display: flex; align-items: center; justify-content: center;
    overflow: hidden;
    font-family: var(--mono);
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: -2px;
    cursor: pointer;
    position: relative;
    transition: filter 0.2s;
  }
  .avatar-inner img {
    width: 100%; height: 100%;
    object-fit: cover;
    border-radius: 50%;
    display: block;
  }
  .avatar-overlay {
    position: absolute; inset: 0;
    border-radius: 50%;
    background: rgba(10,10,15,0.65);
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    gap: 6px;
    opacity: 0;
    transition: opacity 0.2s;
    pointer-events: none;
  }
  .avatar-inner:hover .avatar-overlay { opacity: 1; }
  .avatar-overlay-icon {
    font-size: 1.4rem;
  }
  .avatar-overlay-text {
    font-family: var(--mono);
    font-size: 9px;
    color: var(--accent);
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }
  .avatar-dot {
    position: absolute; bottom: 12px; right: 12px;
    width: 14px; height: 14px;
    background: var(--accent3);
    border-radius: 50%;
    border: 2px solid var(--bg);
  }
  /* label de upload invisível mas cobre o avatar */
  .avatar-upload-label {
    position: absolute; inset: 0;
    border-radius: 50%;
    cursor: pointer;
    z-index: 2;
  }
  #avatar-input { display: none; }
  .status-badge {
    display: inline-flex; align-items: center; gap: 6px;
    font-family: var(--mono);
    font-size: 10px;
    color: var(--accent3);
    border: 1px solid rgba(104,211,145,0.25);
    border-radius: 100px;
    padding: 4px 12px;
    margin-top: 1.5rem;
    letter-spacing: 0.05em;
  }
  .pulse {
    width: 6px; height: 6px;
    background: var(--accent3);
    border-radius: 50%;
    animation: pulse 2s infinite;
    flex-shrink: 0;
  }
 
  /* ── ABOUT GRID ── */
  .about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-top: 2rem;
  }
  .card {
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem;
    transition: border-color 0.2s, transform 0.2s;
  }
  .card:hover { border-color: var(--border-accent); transform: translateY(-2px); }
  .card-icon { font-size: 1.5rem; margin-bottom: 1rem; }
  .card h3 {
    font-family: var(--mono);
    font-size: 13px;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
  }
  .lang-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 0.75rem; }
  .tag {
    font-family: var(--mono);
    font-size: 11px;
    padding: 4px 12px;
    border-radius: 100px;
    letter-spacing: 0.04em;
  }
  .tag-blue   { background: rgba(99,179,237,0.1); color: var(--accent); border: 1px solid rgba(99,179,237,0.2); }
  .tag-green  { background: rgba(104,211,145,0.1); color: var(--accent3); border: 1px solid rgba(104,211,145,0.2); }
  .tag-purple { background: rgba(159,122,234,0.1); color: var(--accent2); border: 1px solid rgba(159,122,234,0.2); }
  .tag-amber  { background: rgba(246,173,85,0.1); color: #f6ad55; border: 1px solid rgba(246,173,85,0.2); }
 
  /* ── EDUCATION ── */
  .edu-card {
    background: var(--bg3);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    border-radius: 0 8px 8px 0;
    padding: 1.25rem 1.25rem;
    margin-bottom: 1.5rem;
  }
  .edu-card h3 {
    font-family: var(--mono);
    font-size: 13px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 4px;
  }
  .edu-meta {
    font-family: var(--mono);
    font-size: 10px;
    color: var(--accent);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
  }
  .subjects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 6px;
    margin-top: 1rem;
  }
  .subject-item {
    display: flex; align-items: center; gap: 8px;
    font-size: 13px;
    color: var(--muted);
    padding: 6px 10px;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border);
    border-radius: 4px;
  }
  .subject-dot {
    width: 5px; height: 5px;
    border-radius: 50%;
    background: var(--accent);
    flex-shrink: 0;
  }
 
  /* ── SKILLS / TECH ── */
  .skills-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .skill-card {
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem;
    transition: border-color 0.2s, transform 0.2s;
  }
  .skill-card:hover { border-color: var(--border-accent); transform: translateY(-2px); }
  .skill-header { display: flex; align-items: center; gap: 10px; margin-bottom: 1rem; }
  .skill-icon {
    width: 36px; height: 36px;
    border-radius: 6px;
    display: flex; align-items: center; justify-content: center;
    font-family: var(--mono); font-size: 11px; font-weight: 700;
    flex-shrink: 0;
  }
  .si-html { background: rgba(227,76,38,0.15); color: #e34c26; }
  .si-css  { background: rgba(38,77,228,0.15); color: #264ed4; }
  .si-java { background: rgba(240,152,42,0.15); color: #f0982a; }
  .si-js   { background: rgba(241,224,90,0.12); color: #c9b700; }
  .si-py   { background: rgba(55,118,171,0.15); color: var(--accent); }
  .si-git  { background: rgba(240,80,51,0.12); color: #f05033; }
  .si-sql  { background: rgba(38,77,228,0.15); color: #264ed4; }
  .skill-name {
    font-family: var(--mono); font-size: 13px; font-weight: 700;
    color: var(--text); letter-spacing: 0.04em;
  }
  .skill-sub { font-size: 12px; color: var(--muted); }
  .skill-bar-wrap {
    height: 4px; background: rgba(255,255,255,0.06);
    border-radius: 2px; margin: 0.75rem 0 0.5rem; overflow: hidden;
  }
  .skill-bar {
    height: 100%; border-radius: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent2));
  }
  .skill-status {
    font-family: var(--mono); font-size: 10px;
    color: var(--muted); letter-spacing: 0.08em; text-transform: uppercase;
  }
  .status-learning { color: var(--accent3) !important; }
  .status-planned  { color: #f6ad55 !important; }
  .status-done     { color: var(--accent) !important; }
 
  /* ── PROJECTS ── */
  .projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .project-card {
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem;
    display: flex; flex-direction: column;
    transition: border-color 0.2s, transform 0.2s;
    text-decoration: none; color: inherit;
  }
  .project-card:hover { border-color: var(--border-accent); transform: translateY(-3px); }
  .project-top { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 1rem; }
  .project-icon { font-family: var(--mono); font-size: 1.5rem; color: var(--accent); }
  .project-link-icon {
    font-size: 14px; color: var(--muted); opacity: 0.6;
    font-family: var(--mono);
  }
  .project-card:hover .project-link-icon { opacity: 1; color: var(--accent); }
  .project-card h3 {
    font-family: var(--mono); font-size: 14px; font-weight: 700;
    color: var(--text); margin-bottom: 0.5rem;
  }
  .project-card p { font-size: 13px; margin-bottom: 1rem; flex: 1; }
  .project-techs { display: flex; gap: 6px; flex-wrap: wrap; margin-top: auto; }
  .empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 2.5rem 1.5rem;
    background: var(--bg3);
    border: 1px dashed var(--border);
    border-radius: 8px;
  }
  .empty-state p { font-family: var(--mono); font-size: 13px; }
  .gh-link {
    display: inline-flex; align-items: center; gap: 8px;
    font-family: var(--mono); font-size: 13px;
    color: var(--accent);
    border: 1px solid var(--border-accent);
    padding: 10px 20px; border-radius: 6px;
    text-decoration: none; margin-top: 2rem;
    transition: background 0.2s;
  }
  .gh-link:hover { background: rgba(99,179,237,0.08); }
 
  /* ── CONTACT ── */
  .contact-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;          /* Espaçamento vertical entre os cards */
  width: 100%;        /* Ocupa a largura total disponível */
  padding: 0 1rem;    /* Adiciona margem interna nas laterais para não encostar na borda da tela */
  box-sizing: border-box; /* Garante que o padding não aumente o tamanho final do container */
}
    
  .contact-btn {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.5rem 1.75rem;
    text-decoration: none;
    color: inherit;
    transition: border-color 0.2s, transform 0.2s, background 0.2s;
    min-height: 80px;
  }
  .contact-btn:hover {
    border-color: var(--border-accent);
    background: rgba(99,179,237,0.04);
    transform: translateY(-3px);
  }
  .contact-btn-icon {
    width: 52px; height: 52px;
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem;
    flex-shrink: 0;
  }
  .ci-email    { background: rgba(99,179,237,0.12); }
  .ci-linkedin { background: rgba(10,102,194,0.18); }
  .ci-github   { background: rgba(255,255,255,0.07); }
  .ci-whatsapp { background: rgba(37,211,102,0.14); }
  .contact-btn-body {
    display: flex; flex-direction: column; gap: 4px;
    min-width: 0; flex: 1;
  }
  .contact-btn-label {
    font-family: var(--mono);
    font-size: 10px;
    color: var(--muted);
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }
  .contact-btn-value {
    font-family: var(--mono);
    font-size: 14px;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .contact-btn-arrow {
    margin-left: auto;
    font-family: var(--mono);
    font-size: 20px;
    color: var(--muted);
    opacity: 0.35;
    flex-shrink: 0;
    transition: opacity 0.2s, color 0.2s, transform 0.2s;
  }
  .contact-btn:hover .contact-btn-arrow {
    opacity: 1;
    color: var(--accent);
    transform: translate(2px, -2px);
  }
 
  /* ── FOOTER ── */
  footer {
    background: var(--bg);
    border-top: 1px solid var(--border);
    text-align: center;
    padding: 2rem 1rem;
    font-family: var(--mono);
    font-size: 11px;
    color: var(--muted);
  }
  footer span { color: var(--accent); }
 
  /* ── BG DECORATION ── */
  .bg-grid {
    position: fixed; inset: 0; z-index: 0; pointer-events: none;
    background-image:
      linear-gradient(rgba(99,179,237,0.025) 1px, transparent 1px),
      linear-gradient(90deg, rgba(99,179,237,0.025) 1px, transparent 1px);
    background-size: 60px 60px;
  }
  section { position: relative; z-index: 1; }
  nav { z-index: 100; }
 
  /* ── ANIMATIONS ── */
  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
  }
  @keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
  }
  @keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%       { opacity: 0.5; transform: scale(0.8); }
  }
 
  /* ── TABLET (≥ 600px) ── */
  @media (min-width: 600px) {
    nav { padding: 0 2rem; }
    .nav-links a { font-size: 11px; padding: 6px 12px; gap: 4px; }
    section { padding: calc(var(--nav-h) + 3rem) 2.5rem 3.5rem; }
    h1 { font-size: clamp(2rem, 4vw, 3rem); }
    h2 { font-size: clamp(1.4rem, 2.5vw, 1.8rem); }
 
    .about-grid { grid-template-columns: 1fr 1fr; gap: 1.25rem; }
    .subjects-grid { grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); }
    .skills-grid { grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
    .contact-grid { grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
    .projects-grid { grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
    .edu-card { padding: 1.5rem 1.75rem; }
    .status-badge { font-size: 11px; }
  }
 
  /* ── DESKTOP (≥ 900px) ── */
  @media (min-width: 900px) {
    nav { padding: 0 clamp(1rem, 5vw, 4rem); }
    .nav-links { gap: 8px; }
    .nav-links a { font-size: 12px; padding: 6px 14px; letter-spacing: 0.05em; }
    section { padding: calc(var(--nav-h) + 4rem) clamp(1rem, 8vw, 8rem) 4rem; }
    h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
    h2 { font-size: clamp(1.4rem, 3vw, 2rem); }
 
    .hero-grid { grid-template-columns: 1fr auto; gap: 4rem; }
    .avatar-wrap {
      display: block;
      opacity: 0;
      animation: fadeIn 0.8s 0.5s forwards;
      flex-shrink: 0;
    }
    .hero-role { font-size: clamp(0.85rem, 1.5vw, 1rem); }
    .btn { font-size: 12px; padding: 10px 22px; }
 
    .about-grid { gap: 1.5rem; }
    .card { padding: 1.5rem; }
 
    .edu-card { padding: 1.5rem 2rem; }
    .subjects-grid { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 8px; }
 
    .skills-grid { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1.5rem; }
    .skill-card { padding: 1.5rem; }
 
    .projects-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; }
    .project-card { padding: 1.5rem; }
 
    .status-badge { font-size: 11px; }
    footer { font-size: 12px; }
  }