:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --text: #1b1d22;
  --muted: #5d6270;
  --line: #e6e3dc;
  --accent: #0f6b5c;
  --accent-soft: #e2f1ec;
  --warn: #8a5a00;
  --warn-soft: #fbefd6;
  --radius: 14px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111317;
    --surface: #181b21;
    --text: #e9eaee;
    --muted: #9aa0ad;
    --line: #2a2e37;
    --accent: #5fd0b4;
    --accent-soft: #163a33;
    --warn: #f0c46c;
    --warn-soft: #3a2f17;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 72px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.65 Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 920px; margin: 0 auto; padding: 0 20px; }

/* Topbar */
.topbar {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 16px; }
.brand { font: 500 17px "JetBrains Mono", ui-monospace, monospace; color: var(--text); }
.brand span { color: var(--accent); }
.brand:hover { text-decoration: none; }
nav { display: flex; gap: 22px; }
nav a { color: var(--muted); font-size: 15px; font-weight: 500; }
nav a:hover { color: var(--text); text-decoration: none; }
.topbar-inner nav { margin-left: auto; }
.lang-switch {
  display: inline-flex; padding: 3px; gap: 2px;
  border: 1px solid var(--line); border-radius: 999px; background: var(--surface);
}
.lang-switch a {
  font: 500 12px/1 "JetBrains Mono", ui-monospace, monospace;
  padding: 6px 10px; border-radius: 999px; color: var(--muted);
  transition: background .15s, color .15s;
}
.lang-switch a:hover { color: var(--text); text-decoration: none; }
.lang-switch a[aria-current="page"] { background: var(--accent); color: var(--bg); }

/* Hero */
.hero { padding: 96px 20px 72px; }
.eyebrow {
  font: 500 13px "JetBrains Mono", ui-monospace, monospace;
  color: var(--accent); letter-spacing: .04em; text-transform: uppercase; margin: 0 0 14px;
}
h1 { font-size: clamp(34px, 6vw, 54px); line-height: 1.1; letter-spacing: -.025em; margin: 0 0 20px; }
.lead { font-size: 19px; color: var(--muted); max-width: 640px; margin: 0 0 32px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-block; padding: 11px 20px; border-radius: 999px;
  border: 1px solid var(--line); color: var(--text); font-weight: 500; background: var(--surface);
}
.btn:hover { text-decoration: none; border-color: var(--accent); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--bg); }

/* Sections */
.section { padding: 56px 20px; border-top: 1px solid var(--line); }
h2 {
  font: 500 13px "JetBrains Mono", ui-monospace, monospace;
  text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 0 0 28px;
}
h3 { font-size: 20px; margin: 0; letter-spacing: -.01em; }

.about { display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; }
.about p { margin: 0 0 16px; }
.facts { margin: 0; display: grid; gap: 16px; }
.facts dt { font-size: 13px; font-weight: 600; color: var(--muted); }
.facts dd { margin: 2px 0 0; }

/* Projects */
.section-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 28px; }
.section-head h2 { margin: 0; }

/* Projetos: trilha horizontal com encaixe; sem JS continua rolando para o lado */
.projects {
  display: grid; grid-auto-flow: column; grid-auto-columns: calc((100% - 20px) / 2); gap: 20px;
  overflow-x: auto; scroll-snap-type: x mandatory; scroll-behavior: smooth;
  scrollbar-width: none; overscroll-behavior-x: contain;
}
.projects::-webkit-scrollbar { display: none; }
.projects > .card { scroll-snap-align: start; }
.projects:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; border-radius: var(--radius); }
@media (prefers-reduced-motion: reduce) { .projects { scroll-behavior: auto; } }

.carousel-arrows { display: flex; gap: 8px; }
.carousel-arrows[hidden], .carousel-dots[hidden] { display: none; }
.carousel-btn {
  width: 38px; height: 38px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface);
  color: var(--text); font: 500 16px/1 Inter, system-ui, sans-serif; cursor: pointer;
}
.carousel-btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.carousel-btn:disabled { opacity: .35; cursor: default; }
.carousel-btn:focus-visible, .carousel-dots button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.carousel-dots { display: flex; justify-content: center; gap: 4px; margin-top: 16px; }
.carousel-dots button { width: 24px; height: 24px; padding: 0; border: 0; background: none; cursor: pointer; display: grid; place-items: center; }
.carousel-dots button::after { content: ""; width: 8px; height: 8px; border-radius: 999px; background: var(--line); transition: background .2s, width .2s; }
.carousel-dots button[aria-current="true"]::after { background: var(--accent); width: 20px; }

.card.card-backlog { border-style: dashed; background: transparent; }
.backlog-list { list-style: none; padding: 0; margin: 10px 0 0; display: grid; gap: 14px; }
.backlog-list li + li { border-top: 1px solid var(--line); padding-top: 14px; }
.backlog-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.backlog-head strong { font-size: 15px; }
.backlog-list p { margin: 4px 0 0 !important; font-size: 14px; color: var(--muted); }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; display: flex; flex-direction: column;
}
.card p { margin: 0 0 14px; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 6px; }
.card-tagline { color: var(--muted); font-style: italic; }
.tag { font-size: 12px; font-weight: 600; padding: 3px 10px; border-radius: 999px; white-space: nowrap; }
.tag-live { background: var(--accent-soft); color: var(--accent); }
.tag-wip { background: var(--warn-soft); color: var(--warn); }
.list { padding-left: 18px; margin: 0 0 18px; font-size: 15px; }
.list li { margin-bottom: 6px; }
.card-link { margin-top: auto; font-weight: 600; }
.note { font-size: 13px; color: var(--muted); margin: 0 !important; }

.progress { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 16px; }
.progress span {
  font-size: 12px; padding: 3px 9px; border-radius: 6px;
  border: 1px dashed var(--line); color: var(--muted);
}
.progress .done { border: 1px solid var(--accent-soft); background: var(--accent-soft); color: var(--accent); }
.progress .now { border: 1px solid var(--warn); color: var(--warn); }

/* Contact */
.contact > p { margin: 0 0 20px; font-size: 18px; }
.contact-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.contact-list li { display: grid; grid-template-columns: 100px 1fr; }
.contact-list span { color: var(--muted); font-size: 15px; }

.footer { padding: 32px 20px 48px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.footer p { margin: 0; }

/* 404 */
.notfound { min-height: 80vh; display: flex; flex-direction: column; justify-content: center; }

@media (max-width: 760px) {
  nav { gap: 14px; }
  nav a { font-size: 14px; }
  .hero { padding: 64px 16px 48px; }
  .section { padding: 44px 16px; }
  .wrap { padding-left: 16px; padding-right: 16px; }
  .about { grid-template-columns: 1fr; gap: 24px; }
  .projects { grid-auto-columns: 86%; gap: 14px; }
}

@media (max-width: 480px) {
  .brand { display: none; }
  .topbar-inner nav { margin-left: 0; }
}