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

  :root {
    --bg: #0a0c0a;
    --bg2: #0f110f;
    --bg3: #141814;
    --border: rgba(255,255,255,0.07);
    --border2: rgba(255,255,255,0.12);
    --green: #4ade80;
    --green-dim: #22c55e;
    --green-dark: #16a34a;
    --green-glow: rgba(74,222,128,0.12);
    --amber: #fbbf24;
    --blue: #60a5fa;
    --coral: #f87171;
    --teal: #2dd4bf;
    --text: #e8ede8;
    --text2: #8a9a8a;
    --text3: #5a6a5a;
    --mono: 'JetBrains Mono', monospace;
    --sans: 'Syne', sans-serif;
  }

  body.theme-blue {
    --bg: #060810;
    --bg2: #080c14;
    --bg3: #0e1420;
    --border: rgba(255,255,255,0.07);
    --border2: rgba(255,255,255,0.12);
    --green: #38bdf8;
    --green-dim: #0ea5e9;
    --green-dark: #075985;
    --green-glow: rgba(56,189,248,0.12);
    --amber: #fbbf24;
    --blue: #818cf8;
    --coral: #f87171;
    --teal: #22d3ee;
    --text: #ddeeff;
    --text2: #7a9ab8;
    --text3: #3a5a78;
  }

  body.theme-amber {
            --green: #c084fc;      /* Roxo Neon */
            --green-dim: #a855f7;
            --green-dark: #9333ea;
            --green-glow: rgba(192, 132, 252, 0.12);
            --blue: #2dd4bf;       /* Ciano */
            --coral: #fb7185;      /* Rosa */
            --amber: #fde047;      /* Amarelo claro */
            --text: #f3e8ff;
            --text2: #d8b4fe;
            --text3: #9333ea;
            --bg: #0a0510;         /* Fundo arroxeado bem escuro */
            --bg2: #0f0817;
            --bg3: #140b1e;
  }

  body.theme-switching {
    overflow: hidden;
  }

  body.theme-exit nav,
  body.theme-exit main,
  body.theme-exit::before,
  body.theme-exit::after {
    animation: themeExitUp 0.36s ease forwards;
    pointer-events: none;
  }

  body.theme-enter nav,
  body.theme-enter main,
  body.theme-enter::before,
  body.theme-enter::after {
    animation: themeEnterDown 0.42s ease forwards;
    pointer-events: none;
  }

  html { scroll-behavior: smooth; }

  body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    min-height: 100vh;
    overflow-x: hidden;
  }

  /* SCANLINE overlay */
  body::before {
    content: '';
    position: fixed;
    inset: 0;
    background: repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(0,0,0,0.03) 2px,
      rgba(0,0,0,0.03) 4px
    );
    pointer-events: none;
    z-index: 1000;
  }

  /* NOISE texture */
  body::after {
    content: '';
    position: fixed;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 999;
    opacity: 0.4;
  }

  /* ── BOOT SCREEN ── */
  #boot {
    position: fixed;
    inset: 0;
    background: var(--bg);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0;
    transition: opacity 0.6s ease, visibility 0.6s ease;
  }
  #boot.hidden { opacity: 0; visibility: hidden; }

  .boot-logo {
    font-family: var(--mono);
    font-size: clamp(10px, 1.5vw, 13px);
    color: var(--green);
    line-height: 1.2;
    text-align: center;
    margin-bottom: 2rem;
    white-space: pre;
    animation: fadeIn 0.5s ease forwards;
  }

  .boot-lines {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--text3);
    width: min(480px, 90vw);
  }
  .boot-line {
    opacity: 0;
    margin-bottom: 4px;
    animation: bootIn 0.3s ease forwards;
  }
  .boot-line .ok { color: var(--green); }
  .boot-line .warn { color: var(--amber); }
  .boot-line .info { color: var(--blue); }

  .progress-bar {
    width: min(480px, 90vw);
    height: 2px;
    background: var(--border);
    margin-top: 1.5rem;
    overflow: hidden;
    border-radius: 2px;
  }
  .progress-fill {
    height: 100%;
    background: var(--green);
    width: 0%;
    transition: width 0.1s linear;
    box-shadow: 0 0 8px var(--green);
  }

  /* ── MAIN ── */
  main { opacity: 0; transition: opacity 0.8s ease; }
  main.visible { opacity: 1; }

  /* ── NAV ── */
  nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 0 2rem;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(10,12,10,0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
  }

  .nav-logo {
    font-family: var(--mono);
    font-size: 13px;
    color: var(--green);
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .nav-logo span { color: var(--text3); }

  .nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
  }
  .nav-links a {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--text3);
    text-decoration: none;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: color 0.2s;
  }
  .nav-links a:hover { color: var(--green); }

  body.theme-blue nav {
    background: rgba(6,8,16,0.85);
  }

  body.theme-amber nav {
    background: rgba(16,11,5,0.85);
  }

  .nav-status {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--text3);
    display: flex;
    align-items: center;
    gap: 6px;
  }

  .nav-theme {
    margin-left: 10px;
    padding: 6px 10px;
    border-radius: 4px;
    border: 1px solid var(--border2);
    background: transparent;
    color: var(--text2);
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s, background 0.2s, transform 0.2s, box-shadow 0.2s;
    position: relative;
    overflow: hidden;
  }
  .nav-theme:hover {
    border-color: var(--green);
    color: var(--green);
    background: var(--green-glow);
  }
  .nav-theme.is-animating {
    animation: themePulse 0.6s ease;
    box-shadow: 0 0 0 0 var(--green-glow), 0 0 18px var(--green-glow);
  }
  .nav-theme.is-animating::after {
    content: '';
    position: absolute;
    inset: -40%;
    border-radius: inherit;
    background: radial-gradient(circle, var(--green-glow) 0%, transparent 65%);
    animation: themeSweep 0.6s ease forwards;
    pointer-events: none;
  }
  .status-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--green);
    animation: pulse 2s ease infinite;
  }

  /* ── HERO ── */
  .hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 5rem 2rem 4rem;
    max-width: 1100px;
    margin: 0 auto;
    position: relative;
  }

  .hero-eyebrow {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--green);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    opacity: 0;
    animation: slideUp 0.6s ease 0.2s forwards;
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .hero-eyebrow::before {
    content: '';
    display: inline-block;
    width: 32px;
    height: 1px;
    background: var(--green);
  }

  .hero-title {
    font-size: clamp(2.8rem, 7vw, 6rem);
    font-weight: 800;
    line-height: 1.0;
    margin-bottom: 1.5rem;
    opacity: 0;
    animation: slideUp 0.6s ease 0.35s forwards;
  }
  .hero-title .line2 {
    color: var(--green);
    display: block;
  }
  .hero-title .line3 {
    color: var(--text3);
    font-weight: 400;
    font-size: 0.6em;
    display: block;
    margin-top: 0.2em;
    font-family: var(--mono);
    letter-spacing: -0.01em;
  }

  .hero-desc {
    font-family: var(--mono);
    font-size: 14px;
    color: var(--text2);
    max-width: 560px;
    line-height: 1.8;
    margin-bottom: 2.5rem;
    opacity: 0;
    animation: slideUp 0.6s ease 0.5s forwards;
  }

  .hero-ctas {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    opacity: 0;
    animation: slideUp 0.6s ease 0.65s forwards;
  }

  .btn-primary {
    padding: 12px 28px;
    background: var(--green);
    color: #0a0c0a;
    border: none;
    border-radius: 4px;
    font-family: var(--mono);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.2s, transform 0.15s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
  }
  .btn-primary:hover { background: #e3e2e2; transform: translateY(-1px); }

  .btn-ghost {
    padding: 12px 28px;
    background: transparent;
    color: var(--text2);
    border: 1px solid var(--border2);
    border-radius: 4px;
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    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(--green); color: var(--green); }

  .hero-grid {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 340px;
    height: 340px;
    opacity: 0.06;
    background-image:
      linear-gradient(var(--green) 1px, transparent 1px),
      linear-gradient(90deg, var(--green) 1px, transparent 1px);
    background-size: 28px 28px;
    border-radius: 50%;
    pointer-events: none;
  }

  /* ── SECTION COMMON ── */
  section {
    padding: 5rem 2rem;
    max-width: 1100px;
    margin: 0 auto;
  }

  .section-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 3rem;
  }
  .section-num {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--green);
    background: var(--green-glow);
    padding: 4px 10px;
    border-radius: 3px;
    border: 1px solid rgba(74,222,128,0.2);
  }
  .section-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text);
  }
  .section-line {
    flex: 1;
    height: 1px;
    background: var(--border);
  }

  /* ── STACK ── */
  .stack-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1px;
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
  }

  .stack-cell {
    background: var(--bg2);
    padding: 1.5rem;
    transition: background 0.2s;
  }
  .stack-cell:hover { background: var(--bg3); }

  .stack-cell-label {
    font-family: var(--mono);
    font-size: 10px;
    color: var(--text3);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .stack-cell-label::after { content: ''; flex: 1; height: 1px; background: var(--border); }

  .tags { display: flex; flex-wrap: wrap; gap: 6px; }
  .tag {
    font-family: var(--mono);
    font-size: 11px;
    font-weight: 500;
    padding: 3px 9px;
    border-radius: 3px;
    border: 1px solid transparent;
  }
  .tag-g { background: rgba(74,222,128,0.08); color: #86efac; border-color: rgba(74,222,128,0.15); }
  .tag-t { background: rgba(45,212,191,0.08); color: #5eead4; border-color: rgba(45,212,191,0.15); }
  .tag-a { background: rgba(251,191,36,0.08); color: #fcd34d; border-color: rgba(251,191,36,0.15); }
  .tag-b { background: rgba(96,165,250,0.08); color: #93c5fd; border-color: rgba(96,165,250,0.15); }
  .tag-r { background: rgba(248,113,113,0.08); color: #fca5a5; border-color: rgba(248,113,113,0.15); }

  /* ── PROJECTS ── */
  .projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
  }

  .project-card {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.75rem;
    position: relative;
    overflow: hidden;
    transition: border-color 0.25s, transform 0.2s;
    cursor: default;
  }
  .project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    opacity: 0;
    transition: opacity 0.25s;
  }
  .project-card:hover { border-color: var(--border2); transform: translateY(-2px); }
  .project-card:hover::before { opacity: 1; }

  .proj-1::before { background: linear-gradient(90deg, transparent, var(--blue), transparent); }
  .proj-2::before { background: linear-gradient(90deg, transparent, var(--coral), transparent); }
  .proj-3::before { background: linear-gradient(90deg, transparent, var(--green), transparent); }

  .project-num {
    font-family: var(--mono);
    font-size: 10px;
    color: var(--text3);
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
  }

  .project-icon-wrap {
    width: 44px; height: 44px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 1rem;
  }
  .icon-blue { background: rgba(96,165,250,0.1); }
  .icon-coral { background: rgba(248,113,113,0.1); }
  .icon-green { background: rgba(74,222,128,0.1); }

  .project-title-text {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
    color: var(--text);
  }
  .project-focus {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--text3);
    margin-bottom: 1.25rem;
  }

  .project-field { margin-bottom: 1rem; }
  .project-field-label {
    font-family: var(--mono);
    font-size: 10px;
    color: var(--text3);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 5px;
  }
  .project-field-val {
    font-size: 13px;
    color: var(--text2);
    line-height: 1.6;
  }

  .project-code {
    display: inline-block;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border);
    border-radius: 3px;
    font-family: var(--mono);
    font-size: 11px;
    padding: 1px 6px;
    color: var(--green);
  }

  .project-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 1.25rem; }

  /* ── README CARD ── */
  .readme-card {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
  }

  .readme-topbar {
    background: var(--bg3);
    border-bottom: 1px solid var(--border);
    padding: 12px 1.5rem;
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .readme-dots { display: flex; gap: 6px; }
  .rdot { width: 10px; height: 10px; border-radius: 50%; }
  .rdot-r { background: #ff5f57; }
  .rdot-y { background: #febc2e; }
  .rdot-g { background: #28c840; }
  .readme-filename {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--text3);
    margin-left: 4px;
  }

  .readme-body {
    padding: 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
  }

  .readme-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
  }
  .readme-num-badge {
    font-family: var(--mono);
    font-size: 11px;
    font-weight: 700;
    color: var(--bg);
    background: var(--green);
    width: 22px; height: 22px;
    border-radius: 3px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 1px;
  }
  .readme-item-text {
    font-size: 13px;
    color: var(--text2);
    line-height: 1.6;
  }
  .readme-item-text strong { color: var(--text); font-weight: 500; display: block; margin-bottom: 2px; }

  /* ── PLATAFORMA ── */
  .platform-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1rem;
  }

  .platform-card {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    transition: border-color 0.2s;
  }
  .platform-card:hover { border-color: var(--border2); }

  .platform-icon {
    font-size: 22px;
    flex-shrink: 0;
    margin-top: 2px;
  }
  .platform-name {
    font-weight: 600;
    font-size: 15px;
    margin-bottom: 4px;
    color: var(--text);
  }
  .platform-badge {
    display: inline-block;
    font-family: var(--mono);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.08em;
    padding: 2px 7px;
    border-radius: 3px;
    margin-bottom: 8px;
  }
  .badge-required { background: rgba(74,222,128,0.15); color: var(--green); border: 1px solid rgba(74,222,128,0.25); }
  .badge-optional { background: rgba(251,191,36,0.1); color: var(--amber); border: 1px solid rgba(251,191,36,0.2); }

  .platform-desc { font-size: 13px; color: var(--text2); line-height: 1.6; }

  /* ── FOOTER ── */
  footer {
    border-top: 1px solid var(--border);
    padding: 2rem;
    text-align: center;
    font-family: var(--mono);
    font-size: 12px;
    color: var(--text3);
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
  }
  footer span { color: var(--green); }

  /* ── DIVIDER ── */
  .divider {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    height: 1px;
    background: var(--border);
  }

  /* ── KEYFRAMES ── */
  @keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
  @keyframes slideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
  @keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }
  @keyframes bootIn { from { opacity: 0; transform: translateX(-8px); } to { opacity: 1; transform: translateX(0); } }
  @keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }
  @keyframes themePulse {
    0% { transform: scale(1); }
    35% { transform: scale(0.92) rotate(-4deg); }
    70% { transform: scale(1.08) rotate(4deg); }
    100% { transform: scale(1); }
  }
  @keyframes themeSweep {
    0% { transform: scale(0.2); opacity: 0; }
    35% { opacity: 1; }
    100% { transform: scale(1.3); opacity: 0; }
  }
  @keyframes themeExitUp {
    0% { transform: translateY(0) scale(1); opacity: 1; filter: blur(0); }
    100% { transform: translateY(-28px) scale(0.985); opacity: 0; filter: blur(8px); }
  }
  @keyframes themeEnterDown {
    0% { transform: translateY(18px) scale(0.985); opacity: 0; filter: blur(8px); }
    100% { transform: translateY(0) scale(1); opacity: 1; filter: blur(0); }
  }

  .cursor-blink {
    display: inline-block;
    width: 8px;
    height: 14px;
    background: var(--green);
    margin-left: 2px;
    vertical-align: middle;
    animation: blink 1s step-end infinite;
  }

  /* ── SCROLL REVEAL ── */
  .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }
  .reveal.in { opacity: 1; transform: translateY(0); }

  /* ── RESPONSIVE ── */
  @media (max-width: 640px) {
    nav .nav-links { display: none; }
    .hero { padding: 5rem 1.25rem 3rem; }
    section { padding: 3.5rem 1.25rem; }
    .hero-grid { display: none; }
    footer { justify-content: center; }
  }