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

  :root {
    --black: #0a0a0a;
    --white: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #e8e8e8;
    --gray-400: #a0a0a0;
    --gray-600: #666;
    --gray-800: #222;
    --font-display: 'DM Serif Display', Georgia, serif;
    --font-body: 'DM Sans', system-ui, sans-serif;
    --nav-w: 280px;
    --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  }

  html {
    scroll-behavior: smooth;
    overflow-x: hidden;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
  }

  img, svg { max-width: 100%; }

  section[id] { scroll-margin-top: 0; }

  body {
    background: var(--white);
    color: var(--black);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  ::selection { background: var(--black); color: var(--white); }

  ::-webkit-scrollbar { width: 2px; }
  ::-webkit-scrollbar-track { background: transparent; }
  ::-webkit-scrollbar-thumb { background: var(--gray-200); }

  .layout { display: flex; min-height: 100vh; }

  .sidebar {
    position: fixed;
    top: 0; left: 0;
    width: var(--nav-w);
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 56px 40px 48px;
    border-right: 1px solid var(--gray-200);
    background: var(--white);
    z-index: 100;
    transition: transform 0.4s var(--ease);
  }

  .logo {
    font-family: var(--font-display);
    font-size: 22px;
    color: var(--black);
    text-decoration: none;
    letter-spacing: -0.5px;
    display: block;
    margin-bottom: 4px;
  }

  .tagline {
    font-size: 11px;
    color: var(--gray-400);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    font-weight: 400;
  }

  nav { margin-top: 56px; }

  nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    font-size: 13px;
    font-weight: 400;
    color: var(--gray-400);
    text-decoration: none;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    transition: color 0.2s, gap 0.2s;
    position: relative;
  }

  nav a::before {
    content: '';
    display: block;
    width: 20px;
    height: 1px;
    background: var(--gray-400);
    transition: width 0.3s var(--ease), background 0.2s;
    flex-shrink: 0;
  }

  nav a:hover, nav a.active { color: var(--black); gap: 16px; }
  nav a:hover::before, nav a.active::before { width: 36px; background: var(--black); }

  .social-links { display: flex; gap: 16px; margin-bottom: 24px; }

  .social-links a {
    width: 34px; height: 34px;
    display: flex; align-items: center; justify-content: center;
    border: 1px solid var(--gray-200);
    border-radius: 50%;
    color: var(--gray-600);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.2s;
  }

  .social-links a:hover { background: var(--black); border-color: var(--black); color: var(--white); }

  .cv-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border: 1px solid var(--black);
    background: transparent;
    color: var(--black);
    font-family: var(--font-body);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    text-decoration: none;
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.25s var(--ease);
    white-space: nowrap;
  }

  .cv-btn:hover { background: var(--black); color: var(--white); }
  .cv-btn svg { flex-shrink: 0; transition: transform 0.2s; }
  .cv-btn:hover svg { transform: translateY(1px); }

  main {
    margin-left: var(--nav-w);
    flex: 1;
    padding: 0 80px;
    max-width: calc(760px + var(--nav-w));
  }

  section {
    padding: 96px 0;
    border-bottom: 1px solid var(--gray-200);
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
  }

  section.visible { opacity: 1; transform: translateY(0); }
  section:last-child { border-bottom: none; }

  #hero { padding-top: 120px; padding-bottom: 80px; }

  .hero-top {
    display: flex;
    align-items: flex-start;
    gap: 40px;
    margin-bottom: 40px;
  }

  .hero-photo {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    object-position: center top;
    border: 2px solid var(--gray-200);
    flex-shrink: 0;
    filter: grayscale(10%);
    transition: filter 0.3s;
  }

  .hero-photo:hover { filter: grayscale(0%); }

  .hero-text { flex: 1; }

  .greeting {
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--gray-400);
    margin-bottom: 20px;
    font-weight: 400;
  }

  h1 {
    font-family: var(--font-display);
    font-size: clamp(42px, 6vw, 72px);
    line-height: 1.05;
    letter-spacing: -2px;
    color: var(--black);
    margin-bottom: 20px;
  }

  h1 em { font-style: italic; color: var(--gray-400); }

  .hero-desc {
    font-size: 17px;
    line-height: 1.8;
    color: var(--gray-600);
    max-width: 520px;
    font-weight: 300;
    margin-bottom: 40px;
  }

  .hero-desc strong { color: var(--black); font-weight: 500; }

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

  .btn-primary {
    padding: 13px 28px;
    background: var(--black);
    color: var(--white);
    font-family: var(--font-body);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.5px;
    border: none;
    border-radius: 2px;
    cursor: pointer;
    text-decoration: none;
    transition: opacity 0.2s;
    display: inline-flex; align-items: center; gap: 8px;
  }

  .btn-primary:hover { opacity: 0.75; }

  .btn-ghost {
    padding: 13px 28px;
    background: transparent;
    color: var(--black);
    font-family: var(--font-body);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.5px;
    border: 1px solid var(--gray-200);
    border-radius: 2px;
    cursor: pointer;
    text-decoration: none;
    transition: border-color 0.2s, color 0.2s;
    display: inline-flex; align-items: center; gap: 8px;
  }

  .btn-ghost:hover { border-color: var(--black); }

  .section-label {
    font-size: 11px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--gray-400);
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    gap: 16px;
    font-weight: 400;
  }

  .section-label::after {
    content: '';
    display: block;
    height: 1px;
    width: 60px;
    background: var(--gray-200);
  }

  .about-text {
    font-size: 16px;
    line-height: 1.9;
    color: var(--gray-600);
    font-weight: 300;
    max-width: 580px;
  }

  .about-text p + p { margin-top: 20px; }
  .about-text strong { color: var(--black); font-weight: 500; }

  .skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    margin-top: 48px;
    border: 1px solid var(--gray-200);
    border-radius: 4px;
    overflow: hidden;
  }

  .skill-item {
    padding: 20px 24px;
    border-right: 1px solid var(--gray-200);
    border-bottom: 1px solid var(--gray-200);
  }

  .skill-item:nth-child(3n) { border-right: none; }
  .skill-item-label { font-size: 11px; color: var(--gray-400); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px; }
  .skill-item-value { font-size: 14px; color: var(--black); font-weight: 500; line-height: 1.4; }

  .exp-list { display: flex; flex-direction: column; gap: 0; }

  .exp-item {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 0 32px;
    padding: 40px 0;
    border-bottom: 1px solid var(--gray-200);
    cursor: default;
    transition: background 0.2s;
    position: relative;
  }

  .exp-item:first-child { padding-top: 0; }
  .exp-item:last-child { border-bottom: none; padding-bottom: 0; }

  .exp-item::before {
    content: '';
    position: absolute;
    left: -80px; right: -80px;
    top: 0; bottom: 0;
    background: var(--gray-100);
    opacity: 0;
    transition: opacity 0.2s;
    z-index: -1;
  }

  .exp-item:hover::before { opacity: 1; }

  .exp-date { font-size: 12px; color: var(--gray-400); padding-top: 4px; letter-spacing: 0.5px; line-height: 1.5; }
  .exp-date span { display: block; font-size: 10px; text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 4px; color: var(--gray-200); }
  .exp-role { font-size: 15px; font-weight: 500; color: var(--black); margin-bottom: 4px; letter-spacing: -0.2px; }
  .exp-company { font-size: 13px; color: var(--gray-400); margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }
  .exp-company::before { content: ''; display: inline-block; width: 4px; height: 4px; background: var(--gray-200); border-radius: 50%; }
  .exp-desc { font-size: 14px; color: var(--gray-600); line-height: 1.8; font-weight: 300; margin-bottom: 16px; }

  .tag-list { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
  .tag { font-size: 11px; font-weight: 500; color: var(--gray-600); background: var(--gray-100); padding: 4px 10px; border-radius: 2px; letter-spacing: 0.3px; }

  .projects-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: var(--gray-200);
    border: 1px solid var(--gray-200);
    border-radius: 4px;
    overflow: hidden;
  }

  .project-card {
    background: var(--white);
    padding: 36px 32px;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: background 0.2s;
    position: relative;
    min-height: 260px;
    min-width: 0;
  }

  .project-card.no-link { cursor: default; }
  .project-card.no-link::after { content: none; }
  .project-card.no-link .project-title { padding-right: 0; }

  .project-card:hover { background: var(--gray-100); }

  .project-card::after {
    content: '↗';
    position: absolute;
    top: 28px; right: 28px;
    font-size: 16px;
    color: var(--gray-200);
    transition: color 0.2s, transform 0.2s;
  }

  .project-card:hover::after { color: var(--black); transform: translate(2px, -2px); }

  .project-num { font-size: 11px; color: var(--gray-200); letter-spacing: 2px; font-weight: 500; }
  .project-title { font-family: var(--font-display); font-size: 19px; color: var(--black); letter-spacing: -0.3px; line-height: 1.2; padding-right: 32px; }
  .project-desc { font-size: 13px; color: var(--gray-400); line-height: 1.7; font-weight: 300; flex: 1; }

  .contact-inner { max-width: 480px; }
  .contact-heading { font-family: var(--font-display); font-size: clamp(28px, 4vw, 42px); line-height: 1.1; letter-spacing: -1px; color: var(--black); margin-bottom: 20px; }
  .contact-sub { font-size: 15px; color: var(--gray-600); line-height: 1.8; font-weight: 300; margin-bottom: 40px; }
  .contact-email { display: inline-flex; align-items: center; gap: 10px; font-size: 15px; color: var(--black); text-decoration: none; border-bottom: 1px solid var(--black); padding-bottom: 2px; font-weight: 400; transition: opacity 0.2s; }
  .contact-email:hover { opacity: 0.5; }
  .contact-links { display: flex; flex-direction: column; align-items: flex-start; gap: 18px; }
  .contact-links .contact-email { max-width: 100%; overflow-wrap: anywhere; }

  .mobile-header {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 60px;
    background: rgba(250,250,250,0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 200;
    padding: 0 24px;
    align-items: center;
    justify-content: space-between;
  }

  .mobile-logo { font-family: var(--font-display); font-size: 18px; color: var(--black); text-decoration: none; }

  .hamburger { width: 32px; height: 32px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px; background: none; border: none; cursor: pointer; padding: 0; }
  .hamburger span { display: block; width: 18px; height: 1px; background: var(--black); transition: all 0.3s var(--ease); transform-origin: center; }
  .hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
  .hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

  .mobile-menu {
    display: none;
    position: fixed;
    top: 60px; left: 0; right: 0; bottom: 0;
    background: var(--white);
    z-index: 150;
    padding: 40px 32px;
    flex-direction: column;
    gap: 32px;
    transform: translateX(100%);
    transition: transform 0.4s var(--ease);
  }

  .mobile-menu { overflow-y: auto; visibility: hidden; transition: transform 0.4s var(--ease), visibility 0s linear 0.4s; }
  .mobile-menu.open { transform: translateX(0); visibility: visible; transition: transform 0.4s var(--ease), visibility 0s; }
  .mobile-menu nav { display: flex; flex-direction: column; margin-top: 0; }
  .mobile-menu nav a { padding: 14px 0; font-size: 22px; font-family: var(--font-display); color: var(--black); text-decoration: none; border-bottom: 1px solid var(--gray-200); letter-spacing: -0.3px; text-transform: none; display: block; transition: opacity 0.2s; }
  .mobile-menu nav a:hover { opacity: 0.5; }
  .mobile-menu nav a::before { display: none; }
  .mobile-menu .cv-btn { align-self: flex-start; margin-top: 8px; }

  footer { padding: 40px 0; font-size: 12px; color: var(--gray-400); display: flex; justify-content: space-between; align-items: center; border-top: 1px solid var(--gray-200); margin-top: 0; flex-wrap: wrap; gap: 12px; }

  /* Notebooks e tablets deitados: sidebar visível, menos respiro lateral */
  @media (min-width: 901px) and (max-width: 1180px) {
    :root { --nav-w: 240px; }
    .sidebar { padding: 48px 32px 40px; }
    main { padding: 0 48px; }
    .exp-item::before { left: -48px; right: -48px; }
    .exp-item { grid-template-columns: 120px 1fr; gap: 0 24px; }
    .project-card { padding: 28px 24px; }
  }

  /* Telas baixas (notebook pequeno / tablet deitado): sidebar rola se faltar altura */
  @media (min-width: 901px) and (max-height: 640px) {
    .sidebar { overflow-y: auto; padding-top: 32px; padding-bottom: 32px; }
    nav { margin-top: 32px; }
  }

  @media (max-width: 900px) {
    .sidebar { display: none; }
    section[id] { scroll-margin-top: 60px; }
    .mobile-header { display: flex; }
    .mobile-menu { display: flex; }
    main { margin-left: 0; padding: 80px 32px 0; max-width: 100%; }
    #hero { padding-top: 80px; }
    .hero-top { flex-direction: column; gap: 24px; }
    .hero-photo { width: 90px; height: 90px; }
    .exp-item { grid-template-columns: 1fr; gap: 8px; }
    .exp-item::before { left: -32px; right: -32px; }
    .exp-date span { display: inline; margin-right: 6px; }
    .projects-grid { grid-template-columns: 1fr 1fr; }
    .project-card { padding: 26px 22px; min-height: 0; }
    .project-title { font-size: 17px; }
    .project-desc { font-size: 13px; }
    .project-card::after { top: 22px; right: 20px; }
  }

  /* Celulares */
  @media (max-width: 600px) {
    main { padding: 80px 20px 0; }
    #hero { padding-top: 56px; padding-bottom: 64px; }
    section { padding: 72px 0; }
    .exp-item::before { left: -20px; right: -20px; }
    .exp-item { padding: 32px 0; }
    .hero-desc { font-size: 16px; }
    .hero-cta a { flex: 1 1 auto; justify-content: center; }
    .skills-grid { grid-template-columns: 1fr 1fr; margin-top: 40px; }
    .skill-item { padding: 16px; }
    .skill-item:nth-child(3n) { border-right: 1px solid var(--gray-200); }
    .skill-item:nth-child(2n) { border-right: none; }
    .skill-item:last-child:nth-child(odd) { grid-column: 1 / -1; border-right: none; }
    .skill-item-value { font-size: 13px; }
    .projects-grid { grid-template-columns: 1fr; }
    .project-card { padding: 24px 20px; }
    .contact-email { font-size: 14px; }
    footer { flex-direction: column; align-items: flex-start; }
  }

  /* Celulares bem estreitos (ex.: iPhone SE 1ª geração, Galaxy Fold fechado) */
  @media (max-width: 360px) {
    main { padding: 76px 16px 0; }
    .exp-item::before { left: -16px; right: -16px; }
    .mobile-header { padding: 0 16px; }
    .mobile-menu { padding: 32px 16px; }
    h1 { font-size: 38px; letter-spacing: -1.5px; }
    .greeting { letter-spacing: 1.5px; font-size: 11px; }
    .skills-grid { grid-template-columns: 1fr; }
    .skill-item, .skill-item:nth-child(3n) { border-right: none; }
  }

  /* Celular deitado: menu cabe na altura */
  @media (max-width: 900px) and (max-height: 500px) {
    .mobile-menu { padding: 16px 32px; gap: 16px; }
    .mobile-menu nav a { padding: 8px 0; font-size: 18px; }
  }

  .progress { position: fixed; top: 0; left: 0; height: 2px; background: var(--black); z-index: 999; width: 0%; transition: width 0.1s linear; }

  @media (max-width: 900px) { .progress { top: 60px; } }