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

    /* =============================================
       VARIAVEIS DE COR
    ============================================= */
    :root {
      --bg:           #f5f6f8;
      --ink:          #0f1c2e;
      --muted:        #7a8a9a;
      --accent:       #1e4d8c;
      --accent-light: #3a7bd5;
      --border:       #e0e5f0;
      --card:         #ffffff;
    }

    /* =============================================
       BASE
    ============================================= */
    html {
      scroll-behavior: smooth;
      font-size: 19px;
    }

    body {
      background: var(--bg);
      color: var(--ink);
      font-family: 'Inter', sans-serif;
      font-weight: 400;
      line-height: 1.75;
      min-height: 100vh;
      scroll-behavior: smooth;
    }

    /* =============================================
       LANG TOGGLE (canto superior direito)
    ============================================= */
    .lang-toggle {
      position: fixed;
      top: 1.3rem;
      right: 3rem;
      z-index: 100;
      display: flex;
      gap: .2rem;
      background: var(--card);
      border: 2px solid #a8b8cc;
      border-radius: 2rem;
      padding: .3rem .25rem;
      box-shadow: 0 2px 12px rgba(15, 28, 46, .12);
    }

    .lang-toggle button {
      background: none;
      border: none;
      cursor: pointer;
      font-family: 'Inter', sans-serif;
      font-size: .78rem;
      font-weight: 600;
      letter-spacing: .06em;
      padding: .4rem 1rem;
      border-radius: 2rem;
      color: var(--muted);
      transition: all .2s;
    }

    .lang-toggle button.active {
      background: var(--ink);
      color: #fff;
    }

    /* =============================================
       NAVEGACAO SUPERIOR
    ============================================= */
    nav {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      padding: 1.7rem 3.2rem;
      display: flex;
      align-items: center;
      z-index: 50;
      background: var(--bg);
      border-bottom: 1px solid var(--border);
    }

    .nav-logo {
      font-weight: 800;
      font-size: 1.1rem;
      letter-spacing: -.02em;
      text-decoration: none;
      color: var(--ink);
    }

    .nav-links {
      margin-left: auto;
      /* aumentar afastamento da direita para não colar no botão de idioma */
      margin-right: 9.5rem;
      display: flex;
      gap: 2.7rem;
      list-style: none;
    }

    .nav-links a {
      font-size: .78rem;
      font-weight: 700;
      letter-spacing: .12em;
      text-transform: uppercase;
      text-decoration: none;
      color: var(--muted);
      transition: color .2s;
    }

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

    /* =============================================
       HERO
    ============================================= */
    #hero {
      min-height: 100vh;
      display: grid;
      grid-template-columns: 1fr 1fr;
      padding: 0 4.2rem;
      gap: 3.5rem;
    }

    .hero-left {
      display: flex;
      flex-direction: column;
      justify-content: center;
      padding-right: 4.2rem;
      padding-top: 3.2rem;
    }

    .hero-tag {
      font-size: .78rem;
      font-weight: 700;
      letter-spacing: .22em;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 1.5rem;
      opacity: 0;
      animation: fadeUp .6s .1s forwards;
    }

    .hero-name {
      font-weight: 900;
      font-size: clamp(2.8rem, 4.5vw, 4rem);
      line-height: 1.05;
      letter-spacing: -.03em;
      opacity: 0;
      animation: fadeUp .6s .2s forwards;
    }

    .hero-name span {
      color: var(--accent);
    }

    .hero-sub {
      margin-top: 1.8rem;
      font-size: 1.1rem;
      font-weight: 600;
      color: var(--ink);
      max-width: 34ch;
      line-height: 1.65;
      opacity: 0;
      animation: fadeUp .6s .35s forwards;
    }

    .hero-cta {
      margin-top: 2.8rem;
      display: flex;
      gap: 1rem;
      opacity: 0;
      animation: fadeUp .6s .45s forwards;
    }

    /* =============================================
       BOTOES
    ============================================= */
    .btn {
      display: inline-block;
      padding: .85rem 2.2rem;
      font-family: 'Inter', sans-serif;
      font-size: .78rem;
      font-weight: 700;
      letter-spacing: .08em;
      text-transform: uppercase;
      text-decoration: none;
      border-radius: .3rem;
      transition: all .2s;
      cursor: pointer;
    }

    .btn-primary {
      background: var(--accent);
      color: #fff;
      border: 2px solid var(--accent);
    }

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

    .btn-ghost {
      background: transparent;
      color: var(--ink);
      border: 2px solid var(--ink);
    }

    .btn-ghost:hover {
      background: var(--ink);
      color: #fff;
    }

    /* =============================================
       HERO DIREITO (circulo)
    ============================================= */
    .hero-right {
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
      opacity: 0;
      animation: fadeIn .8s .5s forwards;
      /* card styling */
      padding: 2.5rem;
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: 1rem;
      box-shadow: 0 2px 8px rgba(15, 28, 46, 0.04);
    }

    .hero-graphic {
      width: min(340px, 80%);
      aspect-ratio: 1;
      border-radius: 50%;
      /* background image for the circular hero - correct relative path from css_ folder */
      background-image: url('../assents/imageEu.jpg');
      background-position: center;
      background-size: cover;
      background-repeat: no-repeat;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 6rem;
      color: rgba(255, 255, 255, .9);
      letter-spacing: -.05em;
      -webkit-user-select: none;
      -moz-user-select: none;
      -ms-user-select: none;
      user-select: none;
      position: relative;
      overflow: hidden;
    }

    .hero-graphic::before,
    .hero-graphic::after {
      content: '';
      position: absolute;
      inset: 0;
      border-radius: 50%;
      pointer-events: none;
    }

    /* subtle darker tint to add depth */
    .hero-graphic::before {
      /* reduzir intensidade para a imagem ficar mais visivel */
      background: rgba(15,28,46,0.06);
      mix-blend-mode: multiply;
      z-index: 1;
    }

    /* light gradient wash for highlights */
    .hero-graphic::after {
      /* tons mais suaves para apenas sugerir profundidade */
      background: linear-gradient(135deg, rgba(58,123,213,0.04), rgba(15,28,46,0.02));
      z-index: 2;
    }

    .hero-scroll {
      position: absolute;
      bottom: 2rem;
      left: 50%;
      transform: translateX(-50%);
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: .5rem;
      font-size: .7rem;
      font-weight: 700;
      letter-spacing: .18em;
      text-transform: uppercase;
      color: var(--muted);
      opacity: 0;
      animation: fadeIn 1s 1s forwards;
    }

    .hero-scroll-line {
      width: 1px;
      height: 3rem;
      background: var(--accent);
      animation: lineDown 1.5s 1.2s infinite;
    }

    /* =============================================
       SECOES GERAIS (FULLSCREEN FIXAS)
    ============================================= */
    section {
      min-height: 100vh;
      padding: 5.5rem 4.2rem;
      max-width: 1200px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .section-label {
      font-size: 1rem;
      font-weight: 900;
      letter-spacing: .22em;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 1rem;
    }

    .section-title {
      font-weight: 800;
      font-size: clamp(2.2rem, 4vw, 3.2rem);
      line-height: 1.1;
      letter-spacing: -.03em;
      margin-bottom: 2.5rem;
    }

    .section-divider {
      min-height: 1px;
      width: 100%;
      background: var(--border);
      max-width: 1200px;
      margin: 0 auto;
    }

    /* =============================================
       SOBRE
    ============================================= */
    .about-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 3.8rem;
      align-items: start;
    }

    .about-text p {
      font-size: 1.05rem;
      font-weight: 600;
      color: #3a4a5c;
      margin-bottom: 1.3rem;
      line-height: 1.8;
    }

    .about-stats {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1.6rem;
    }

    .stat-card {
      padding: 2rem;
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: .6rem;
      box-shadow: 0 1px 3px rgba(15, 28, 46, 0.04);
      transition: border-color .2s, box-shadow .2s;
    }

    .stat-card:hover {
      border-color: var(--accent);
      box-shadow: 0 4px 12px rgba(15, 28, 46, 0.08);
    }

    .stat-number {
      font-size: 2.8rem;
      font-weight: 900;
      color: var(--accent);
      line-height: 1;
      letter-spacing: -.03em;
    }

    .stat-label {
      font-size: .9rem;
      font-weight: 600;
      color: var(--muted);
      margin-top: .5rem;
    }

    /* =============================================
       SKILLS
    ============================================= */
    .skills-categories {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(225px, 1fr));
      gap: 1.6rem;
    }

    .skill-cat {
      padding: 1.8rem;
      background: var(--card);
      border: 2px solid #b5c3d5;
      border-radius: .6rem;
      transition: border-color .2s, transform .2s, box-shadow .2s;
      box-shadow: 0 1px 3px rgba(15, 28, 46, 0.04);
    }

    .skill-cat:hover {
      border-color: var(--accent);
      transform: translateY(-3px);
      box-shadow: 0 4px 12px rgba(15, 28, 46, 0.08);
    }

    .skill-cat-title {
      font-size: .80rem;
      font-weight: 800;
      letter-spacing: .18em;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 1.2rem;
    }

    .skill-tags {
      display: flex;
      flex-wrap: wrap;
      gap: .5rem;
      justify-content: flex-start;
    }

    .skill-tag {
      font-size: .9rem;
      font-weight: 600;
      padding: .4rem 1rem;
      background: #e8ecf2;
      border: 2px solid #b5c3d5;
      border-radius: 2rem;
      color: var(--ink);
    }

    .skill-tag--clickable {
      cursor: pointer;
      transition: background .2s, border-color .2s, color .2s;
      -webkit-user-select: none;
      -moz-user-select: none;
      -ms-user-select: none;
      user-select: none;
    }

    .skill-tag--clickable:hover {
      background: var(--accent);
      border-color: var(--accent);
      color: #fff;
    }

    /* =============================================
       TOOLTIP (balao das skills)
    ============================================= */
    .skill-tooltip {
      position: absolute;
      bottom: calc(100% + 12px);
      left: 50%;
      transform: translateX(-50%) translateY(8px);
      background: var(--ink);
      color: #fff;
      border-radius: .7rem;
      padding: 1rem 1.3rem;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: .6rem;
      min-width: 140px;
      box-shadow: 0 10px 28px rgba(15, 28, 46, .2);
      z-index: 200;
      opacity: 0;
      transition: opacity .2s, transform .2s;
      pointer-events: none;
    }

    .skill-tooltip.visible {
      opacity: 1;
      transform: translateX(-50%) translateY(0);
      pointer-events: all;
    }

    .skill-tooltip::after {
      content: '';
      position: absolute;
      top: 100%;
      left: 50%;
      transform: translateX(-50%);
      border: 7px solid transparent;
      border-top-color: var(--ink);
    }

    .skill-tooltip img {
      width: 38px;
      height: 38px;
      object-fit: contain;
    }

    .skill-tooltip-name {
      font-size: .85rem;
      font-weight: 600;
    }

    .skill-tooltip-link {
      font-size: .75rem;
      color: var(--accent-light);
      text-decoration: none;
      font-weight: 600;
      transition: color .15s;
    }

    .skill-tooltip-link:hover {
      color: #fff;
    }

    /* =============================================
       ANIMACOES (moved from inline <style> in index.html)
    ============================================= */
    @keyframes fadeUp {
      from { opacity: 0; transform: translateY(20px); }
      to   { opacity: 1; transform: translateY(0); }
    }

    @keyframes fadeIn {
      from { opacity: 0; }
      to   { opacity: 1; }
    }

    @keyframes lineDown {
      0%, 100% { transform: scaleY(1); opacity: 1; }
      50%       { transform: scaleY(.5); opacity: .4; }
    }

    /* =============================================
       RESPONSIVO — TABLET (768px) (moved from index.html)
    ============================================= */
    @media (max-width: 768px) {
      html { font-size: 17px; }

      #hero {
        grid-template-columns: 1fr;
        padding: 0 2rem;
        padding-top: 8rem;
      }

      .hero-right  { display: none; }
      .hero-left   { padding-right: 0; }
      .nav-links   { display: none; }

      section      { padding: 4.5rem 2.3rem; }

      .about-grid,
      .contact-grid { grid-template-columns: 1fr; gap: 3rem; }

      .lang-toggle { top: 1.2rem; right: 1.5rem; }
      nav          { padding: 1.2rem 2rem; }
    }

    /* =============================================
       RESPONSIVO — MOBILE (480px) (moved from index.html)
    ============================================= */
    @media (max-width: 480px) {
      html { font-size: 15.5px; }

      .lang-toggle { top: 1rem; right: 1rem; }
      .lang-toggle button { padding: .3rem .7rem; font-size: .72rem; }

      section { padding: 3.8rem 1.7rem; }

      .hero-name { font-size: clamp(3rem, 12vw, 4rem); }
    }

    /* =============================================
       PROJETOS
    ============================================= */
    .projects-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(305px, 1fr));
      gap: 2rem;
    }

    .project-card {
      padding: 2.2rem;
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: .6rem;
      display: flex;
      flex-direction: column;
      gap: .9rem;
      transition: border-color .2s, transform .2s, box-shadow .2s;
      text-decoration: none;
      color: inherit;
      box-shadow: 0 1px 3px rgba(15, 28, 46, 0.04);
    }

    .project-card:hover {
      border-color: var(--accent);
      transform: translateY(-5px);
      box-shadow: 0 8px 16px rgba(15, 28, 46, 0.1);
    }

    .project-num {
      font-size: 2rem;
      font-weight: 900;
      color: var(--accent);
      letter-spacing: -.03em;
    }

    .project-title {
      font-size: 1.3rem;
      font-weight: 800;
      letter-spacing: -.02em;
    }

    .project-desc {
      font-size: 1rem;
      font-weight: 600;
      color: #3a4a5c;
      line-height: 1.7;
    }

    .project-arrow {
      margin-top: auto;
      font-size: .78rem;
      font-weight: 700;
      letter-spacing: .1em;
      text-transform: uppercase;
      color: var(--accent);
      display: flex;
      align-items: center;
      gap: .4rem;
    }

    /* =============================================
       CONTATO
    ============================================= */
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3.8rem;
      /* centraliza verticalmente a coluna de contato para alinhar com o texto */
      align-items: center;
    }

    .contact-text p {
      font-size: 1.05rem;
      font-weight: 700;
      color: #3a4a5c;
      margin-bottom: 2rem;
      line-height: 1.8;
    }

    .contact-links {
      display: flex;
      flex-direction: column;
      gap: 1.2rem;
      /* centraliza horizontalmente os itens dentro da coluna */
      justify-content: center;
    }

    .contact-link {
      display: flex;
      align-items: center;
      gap: 1.2rem;
      padding: 1.2rem 1.8rem;
      background: var(--card);
      border: 2px solid #b5c3d5;
      border-radius: .6rem;
      text-decoration: none;
      color: var(--ink);
      font-size: .95rem;
      font-weight: 700;
      transition: border-color .2s, background .2s, box-shadow .2s;
      box-shadow: 0 1px 3px rgba(15, 28, 46, 0.04);
    }

    .contact-link:hover {
      border-color: var(--accent);
      background: #f0f4fa;
      box-shadow: 0 4px 12px rgba(15, 28, 46, 0.08);
    }

    .contact-link-icon {
      font-size: 1.3rem;
    }

    .contact-link-label {
      color: var(--muted);
      font-size: .82rem;
      font-weight: 700;
    }

    /* =============================================
       FOOTER
    ============================================= */
    footer {
      text-align: center;
      padding: 3rem 2rem;
      font-size: .85rem;
      font-weight: 500;
      color: var(--muted);
      border-top: 1px solid var(--border);
    }

    /* =============================================
       SETAS DE NAVEGACAO (FLUTUANTE FIXA)
    ============================================= */
    .scroll-nav {
      position: fixed;
      right: 2rem;
      bottom: 2rem;
      z-index: 40;
      display: flex;
      flex-direction: column;
      gap: 1rem;
      align-items: center;
    }

    .scroll-btn {
      width: 50px;
      height: 50px;
      border: 2px solid var(--accent);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      color: var(--accent);
      transition: all .3s ease;
      background: rgba(255, 255, 255, 0.9);
      box-shadow: 0 4px 12px rgba(15, 28, 46, 0.1);
      cursor: pointer;
      opacity: 1;
    }

    .scroll-btn.hidden {
      opacity: 0;
      pointer-events: none;
    }

    .scroll-btn:hover {
      border-color: var(--accent-light);
      color: var(--accent-light);
      background: #fff;
      box-shadow: 0 6px 20px rgba(58, 123, 213, 0.2);
      transform: scale(1.1);
    }

    .scroll-btn.up {
      animation: bounceUp 2s infinite;
    }

    .scroll-btn.down {
      animation: bounceDown 2s infinite;
    }

    @keyframes bounceUp {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-8px); }
    }

    @keyframes bounceDown {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(8px); }
    }