:root {
      --bg: #f9f7f0;
      --blue: #0a27cd;
      --pink: #fea7ef;
      --blush: #ffbfbf;
      --text: #0a27cd;
      --muted: rgba(10,39,205,0.45);
    }

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

    html { scroll-behavior: smooth; }

    body {
      background: var(--bg);
      color: var(--text);
      font-family: 'DM Sans', sans-serif;
      font-size: 16px;
      line-height: 1.7;
      min-height: 100vh;
    }

    /* ── Language Toggle ── */
    #lang-toggle {
      position: fixed;
      top: 1.4rem;
      right: 2rem;
      z-index: 100;
      display: flex;
      gap: 0;
      border: 1.5px solid var(--blue);
      border-radius: 20px;
      overflow: hidden;
      background: var(--bg);
    }
    #lang-toggle button {
      background: none;
      border: none;
      padding: .28rem .85rem;
      font-family: 'Space Mono', monospace;
      font-size: .7rem;
      color: var(--blue);
      cursor: pointer;
      transition: background .2s, color .2s;
      letter-spacing: .04em;
    }
    #lang-toggle button.active {
      background: var(--blue);
      color: var(--bg);
    }

    /* ── Nav ── */
    nav {
      position: fixed;
      top: 0; left: 0;
      width: 100%;
      display: flex;
      align-items: center;
      padding: 1.2rem 2rem;
      z-index: 50;
      mix-blend-mode: normal;
      transition: background-color 180ms ease, box-shadow 180ms ease;
    }
    nav ul {
      display: flex;
      gap: 2.2rem;
      list-style: none;
    }
    nav ul li a {
      font-family: 'Space Mono', monospace;
      font-size: .72rem;
      color: var(--blue);
      text-decoration: none;
      letter-spacing: .08em;
      text-transform: lowercase;
      opacity: .65;
      transition: opacity .2s;
    }
    nav ul li a:hover { opacity: 1; }

    /* ── Layout ── */
    .container {
      max-width: 960px;
      margin: 0 auto;
      padding: 0 2rem;
    }

    /* ── Hero ── */
    #hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      padding-top: 5rem;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 220px 1fr;
      gap: 3.5rem;
      align-items: center;
      width: 100%;
    }

    /* Photo placeholder */
    .photo-wrap {
      position: relative;
    }
    .photo-frame {
      width: 200px;
      height: 240px;
      border-radius: 4px;
      background: linear-gradient(145deg, var(--blush) 0%, var(--pink) 100%);
      position: relative;
      overflow: hidden;
      border: 2px solid var(--blue);
    }
    .photo-frame img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }
    .photo-label {
      font-family: 'Space Mono', monospace;
      font-size: .6rem;
      color: var(--muted);
      margin-top: .6rem;
      letter-spacing: .06em;
      text-align: center;
    }
    /* decorative dots */
    .photo-wrap::after {
      content: '';
      position: absolute;
      bottom: 28px;
      right: -18px;
      width: 48px;
      height: 48px;
      background-image: radial-gradient(var(--blue) 1.5px, transparent 1.5px);
      background-size: 8px 8px;
      opacity: .35;
    }

    .hero-text h1 {
      font-family: 'DM Serif Display', serif;
      font-size: clamp(2.4rem, 5vw, 3.4rem);
      line-height: 1.08;
      margin-bottom: .5rem;
      letter-spacing: -.01em;
    }
    .hero-text h1 em {
      font-style: italic;
      color: var(--pink);
      -webkit-text-stroke: 1px var(--pink);
    }
    .hero-subtitle {
      font-family: 'Space Mono', monospace;
      font-size: .78rem;
      letter-spacing: .1em;
      color: var(--muted);
      text-transform: uppercase;
      margin-bottom: 1.6rem;
    }
    .hero-desc {
      font-size: 1rem;
      color: var(--blue);
      max-width: 520px;
      opacity: .82;
      margin-bottom: 2rem;
      font-weight: 300;
    }

    /* Social icons */
    .socials {
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
    }
    .socials a {
      display: flex;
      align-items: center;
      gap: .4rem;
      font-family: 'Space Mono', monospace;
      font-size: .65rem;
      letter-spacing: .06em;
      color: var(--blue);
      text-decoration: none;
      border: 1.5px solid var(--blue);
      border-radius: 20px;
      padding: .3rem .85rem;
      transition: background .2s, color .2s;
      opacity: .75;
    }
    .socials a:hover {
      background: var(--blue);
      color: var(--bg);
      opacity: 1;
    }
    .socials a svg {
      width: 13px; height: 13px;
      fill: currentColor;
      flex-shrink: 0;
    }

    /* ── Section base ── */
    section {
      padding: 5rem 0;
      border-top: 1px solid rgba(10,39,205,.12);
    }
    .section-tag {
      font-family: 'Space Mono', monospace;
      font-size: .65rem;
      letter-spacing: .14em;
      text-transform: uppercase;
      color: var(--pink);
      margin-bottom: .8rem;
      display: block;
    }
    .section-title {
      font-family: 'DM Serif Display', serif;
      font-size: 2rem;
      margin-bottom: 1.6rem;
      line-height: 1.15;
    }

    /* ── About ── */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
    }
    .about-text p {
      font-size: .97rem;
      opacity: .82;
      font-weight: 300;
      margin-bottom: 1rem;
    }
    .about-aside {
      display: flex;
      flex-direction: column;
      gap: 1.4rem;
    }
    .aside-block {
      border-left: 3px solid var(--blush);
      padding-left: 1rem;
    }
    .aside-block .label {
      font-family: 'Space Mono', monospace;
      font-size: .62rem;
      letter-spacing: .1em;
      text-transform: uppercase;
      color: var(--muted);
      margin-bottom: .25rem;
    }
    .aside-block p {
      font-size: .9rem;
      font-weight: 300;
      opacity: .85;
    }
    .tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: .4rem;
      margin-top: .3rem;
    }
    .tag {
      font-family: 'Space Mono', monospace;
      font-size: .6rem;
      letter-spacing: .06em;
      border: 1px solid var(--blush);
      border-radius: 12px;
      padding: .18rem .7rem;
      color: var(--blue);
      opacity: .8;
    }
    .tag.strong {
      border-color: var(--blue);
      opacity: 1;
    }

    /* ── Goals / Horizons ── */
    .horizons-grid {
      display: grid;
      gap: 1.2rem;
    }
    .horizon-card {
      display: grid;
      grid-template-columns: 3rem 1fr;
      gap: 1.2rem;
      align-items: start;
      padding: 1.4rem 1.6rem;
      border: 1.5px solid rgba(10,39,205,.12);
      border-radius: 6px;
      transition: border-color .25s, background .25s;
    }
    .horizon-card:hover {
      border-color: var(--pink);
      background: rgba(254,167,239,.04);
    }
    .horizon-num {
      font-family: 'DM Serif Display', serif;
      font-style: italic;
      font-size: 1.6rem;
      color: var(--blush);
      line-height: 1;
      padding-top: .1rem;
    }
    .horizon-card h3 {
      font-family: 'DM Serif Display', serif;
      font-size: 1.05rem;
      margin-bottom: .3rem;
    }
    .horizon-card p {
      font-size: .9rem;
      font-weight: 300;
      opacity: .78;
    }

    /* ── Experience ── */
    .timeline {
      position: relative;
      padding-left: 1.6rem;
    }
    .timeline::before {
      content: '';
      position: absolute;
      left: 0; top: 6px; bottom: 0;
      width: 1.5px;
      background: linear-gradient(to bottom, var(--pink), var(--blush), transparent);
    }
    .tl-item {
      position: relative;
      margin-bottom: 2.4rem;
    }
    .tl-item::before {
      content: '';
      position: absolute;
      left: -1.6rem;
      top: 7px;
      width: 8px; height: 8px;
      border-radius: 50%;
      background: var(--blue);
      border: 2px solid var(--bg);
      outline: 1.5px solid var(--blue);
    }
    .tl-item.current::before { background: var(--pink); outline-color: var(--pink); }
    .tl-meta {
      font-family: 'Space Mono', monospace;
      font-size: .62rem;
      letter-spacing: .08em;
      color: var(--muted);
      text-transform: uppercase;
      margin-bottom: .2rem;
    }
    .tl-item h3 {
      font-family: 'DM Serif Display', serif;
      font-size: 1.05rem;
      margin-bottom: .15rem;
    }
    .tl-item .company {
      font-size: .82rem;
      color: var(--pink);
      font-weight: 500;
      margin-bottom: .4rem;
    }
    .tl-item p {
      font-size: .9rem;
      font-weight: 300;
      opacity: .78;
    }

    /* ── Projects (placeholder) ── */
    .projects-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
      gap: 1.4rem;
    }
    .project-card {
      border: 1.5px dashed rgba(10,39,205,.25);
      border-radius: 6px;
      padding: 1.8rem 1.4rem;
      min-height: 180px;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      gap: .5rem;
      position: relative;
      transition: border-color .25s;
    }
    .project-card:hover { border-color: var(--pink); }
    .project-card .placeholder-label {
      font-family: 'Space Mono', monospace;
      font-size: .62rem;
      letter-spacing: .1em;
      color: var(--muted);
      text-transform: uppercase;
    }
    .project-card .placeholder-title {
      font-family: 'DM Serif Display', serif;
      font-size: 1.1rem;
      color: rgba(10,39,205,.3);
    }
    .project-card .placeholder-corner {
      position: absolute;
      top: 1rem; right: 1rem;
      width: 28px; height: 28px;
      border-top: 2px solid var(--blush);
      border-right: 2px solid var(--blush);
    }

    /* ── Papers (placeholder) ── */
    .papers-list {
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }
    .paper-card {
      border: 1.5px dashed rgba(10,39,205,.25);
      border-radius: 6px;
      padding: 1.2rem 1.6rem;
      display: flex;
      align-items: center;
      gap: 1.2rem;
      transition: border-color .25s;
    }
    .paper-card:hover { border-color: var(--pink); }
    .paper-card .paper-icon {
      font-family: 'DM Serif Display', serif;
      font-size: 1.4rem;
      font-style: italic;
      color: var(--blush);
      flex-shrink: 0;
    }
    .paper-card .paper-text .placeholder-label {
      font-family: 'Space Mono', monospace;
      font-size: .6rem;
      letter-spacing: .1em;
      color: var(--muted);
      text-transform: uppercase;
    }
    .paper-card .paper-text p {
      font-size: .88rem;
      color: rgba(10,39,205,.35);
      font-style: italic;
    }

    /* ── Footer ── */
    footer {
      border-top: 1px solid rgba(10,39,205,.12);
      padding: 2.4rem 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 1rem;
    }
    footer p {
      font-family: 'Space Mono', monospace;
      font-size: .62rem;
      letter-spacing: .06em;
      color: var(--muted);
    }
    footer .footer-heart { color: var(--pink); }

    /* ── Animations ── */
    @keyframes fadeUp {
      from { opacity: 0; transform: translateY(22px); }
      to   { opacity: 1; transform: translateY(0); }
    }
    .fade-up { animation: fadeUp .7s ease both; }
    .delay-1 { animation-delay: .12s; }
    .delay-2 { animation-delay: .24s; }
    .delay-3 { animation-delay: .36s; }
    .delay-4 { animation-delay: .48s; }

    /* ── Scroll down indicator ── */
    .scroll-down {
      position: absolute;
      bottom: 2rem;
      left: 50%;
      transform: translateX(-50%);
      text-align: center;
      z-index: 10;
    }
    .scroll-down a {
      text-decoration: none;
      color: var(--blue);
      display: inline-block;
      opacity: .7;
      transition: opacity .3s;
    }
    .scroll-down a:hover {
      opacity: 1;
    }
    .scroll-text {
      font-family: 'Space Mono', monospace;
      font-size: .65rem;
      letter-spacing: .1em;
      text-transform: uppercase;
      display: block;
      margin-bottom: .5rem;
    }
    .scroll-arrow {
      width: 20px;
      height: 20px;
      fill: currentColor;
      animation: bounce 2s infinite;
    }
    @keyframes bounce {
      0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
      }
      40% {
        transform: translateY(-10px);
      }
      60% {
        transform: translateY(-5px);
      }
    }

    /* ── Responsive ── */
    @media (max-width: 720px) {
      .hero-grid { grid-template-columns: 1fr; }
      .photo-frame { width: 160px; height: 195px; }
      .about-grid { grid-template-columns: 1fr; }
      nav ul { gap: 1.2rem; }
    }

/* pequena escurecida ao rolar (só um pouquinho) */
nav.scrolled {
  /* opaco e levemente mais escuro que o fundo (sem transparência) */
  background-color: #efece7;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.06);
  border-bottom: 1px solid rgba(10,39,205,0.04);
}