/* ============================================================
   Havilab - Happy Vicuna Laboratory
   Palette: primary #4B2E0F · secondary #E2A963 · bg #FFF2E1
            support #5C7A5E · highlight #F4C15D · cream #FAF7F2 · sage #A8B89C
   ============================================================ */

:root {
  --primary:   #4B2E0F;
  --secondary: #E2A963;
  --bg:        #FFF2E1;
  --support:   #5C7A5E;
  --highlight: #F4C15D;
  --cream:     #FAF7F2;
  --sage:      #A8B89C;

  --ink:       #4B2E0F;
  --ink-soft:  #6e5536;
  --line:      #e8d6bd;
  --shadow:    0 10px 30px -12px rgba(75, 46, 15, .25);
  --radius:    18px;
  --maxw:      1080px;

  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body:    "Inter", system-ui, sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, monospace;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container { width: min(var(--maxw), 92%); margin-inline: auto; }

h1, h2, h3 { font-family: var(--font-display); line-height: 1.12; font-weight: 600; letter-spacing: -.01em; }

.accent { color: var(--support); white-space: nowrap; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 242, 225, .82);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 700; font-size: 1.25rem; }
.brand__icon { border-radius: 50%; box-shadow: 0 2px 8px rgba(75,46,15,.2); }
.brand__name { color: var(--primary); }

.nav__links { list-style: none; display: flex; align-items: center; gap: 28px; margin: 0; padding: 0; font-weight: 500; }
.nav__links a { color: var(--ink-soft); transition: color .18s ease; }
.nav__links a:hover { color: var(--primary); }
.nav__cta {
  background: var(--primary); color: var(--cream) !important;
  padding: 8px 16px; border-radius: 999px; font-weight: 600;
}
.nav__cta:hover { background: #38220a; }

.nav__toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav__toggle span { width: 24px; height: 2px; background: var(--primary); border-radius: 2px; transition: .25s; }

/* ---------- Hero ---------- */
.hero {
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px;
  align-items: center; padding: 84px 0 72px;
}
.eyebrow {
  font-family: var(--font-mono); font-size: .8rem; letter-spacing: .18em;
  text-transform: uppercase; color: var(--support); margin: 0 0 14px;
}
.hero__title { font-size: clamp(2.1rem, 4.6vw, 3.4rem); margin: 0 0 20px; color: var(--primary); }
.hero__lede { font-size: 1.08rem; color: var(--ink-soft); max-width: 52ch; margin: 0 0 28px; }
.hero__lede a { color: var(--support); text-decoration: underline; text-underline-offset: 3px; }
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero__art { position: relative; display: flex; flex-direction: column; align-items: center; gap: 22px; }
.hero__poster {
  width: 100%; border-radius: var(--radius);
  background: var(--cream); padding: 18px;
  box-shadow: var(--shadow); border: 1px solid var(--line);
}
/* Interactive code-comment card */
.codecard {
  width: 100%; max-width: 360px;
  background: #fffaf2; border: 1px solid var(--line); border-radius: 14px;
  box-shadow: var(--shadow); overflow: hidden;
}
.codecard__bar {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px; background: #f2e3cb; border-bottom: 1px solid var(--line);
}
.codecard__dots { display: inline-flex; gap: 6px; }
.codecard__dots i { width: 10px; height: 10px; border-radius: 50%; background: var(--secondary); opacity: .7; }
.codecard__dots i:nth-child(1) { background: #d98b6a; }
.codecard__dots i:nth-child(2) { background: var(--highlight); }
.codecard__dots i:nth-child(3) { background: var(--support); }
.codecard__name { font-family: var(--font-mono); font-size: .8rem; color: var(--ink-soft); }
.codecard__langs { margin-left: auto; display: inline-flex; gap: 4px; background: var(--bg); padding: 3px; border-radius: 999px; }
.codecard__langs .lang {
  font-family: var(--font-mono); font-size: .74rem; font-weight: 500;
  border: 0; cursor: pointer; color: var(--ink-soft);
  padding: 4px 12px; border-radius: 999px; background: transparent;
  transition: background .18s ease, color .18s ease;
}
.codecard__langs .lang:hover { color: var(--primary); }
.codecard__langs .lang.is-active { background: var(--primary); color: var(--cream); }

.codecard__code {
  margin: 0; padding: 16px 18px; text-align: left;
  font-family: var(--font-mono); font-size: .74rem; line-height: 1.35;
  color: var(--support); white-space: pre; overflow-x: auto;
}
.codecard__code--swap { animation: codeSwap .28s ease; }
@keyframes codeSwap {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  .codecard__code--swap { animation: none; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block; padding: 12px 24px; border-radius: 999px;
  font-weight: 600; font-family: var(--font-display); font-size: .98rem;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
}
.btn--primary { background: var(--highlight); color: var(--primary); box-shadow: 0 8px 20px -8px rgba(244,193,93,.9); }
.btn--primary:hover { background: var(--secondary); transform: translateY(-2px); }
.btn--ghost { border: 2px solid var(--secondary); color: var(--primary); }
.btn--ghost:hover { background: var(--secondary); transform: translateY(-2px); }

/* ---------- Sections ---------- */
.section { padding: 78px 0; }
.section--alt { background: var(--cream); border-block: 1px solid var(--line); }
.section__head { max-width: 60ch; margin-bottom: 40px; }
.section__kicker { font-family: var(--font-mono); font-size: .82rem; color: var(--support); }
.section__head h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); margin: 8px 0 0; color: var(--primary); }
.section__sub { color: var(--ink-soft); margin: 12px 0 0; }

/* ---------- About ---------- */
.about { display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: start; }
.about__bio p { margin: 0 0 18px; color: var(--ink-soft); }
.about__bio em { color: var(--primary); font-style: italic; }
.about__side { display: grid; gap: 16px; }

.about__photo { margin: 0; }
.about__photo img {
  width: 100%; max-width: 240px; height: auto; aspect-ratio: 1 / 1; object-fit: cover;
  margin-inline: auto; display: block;
  border-radius: var(--radius); border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.about__photo figcaption {
  margin-top: 10px; text-align: center;
  font-family: var(--font-mono); font-size: .82rem; color: var(--ink-soft);
}

.card { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; }
.card--soft { box-shadow: var(--shadow); }
.card__title { margin: 0 0 6px; font-size: .82rem; text-transform: uppercase; letter-spacing: .12em; color: var(--support); }
.card__role { margin: 0 0 4px; font-weight: 600; color: var(--primary); font-family: var(--font-display); }
.card__meta { margin: 0; font-size: .92rem; color: var(--ink-soft); }

/* ---------- Tags ---------- */
.tags { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 22px; }
.tags--sm { margin-top: 14px; }
.tag {
  font-family: var(--font-mono); font-size: .76rem;
  background: var(--sage); color: #2f3d2f;
  padding: 4px 11px; border-radius: 999px; font-weight: 500;
}
.tags--sm .tag { background: rgba(92,122,94,.14); color: var(--support); }

/* ---------- Projects (swipeable carousel) ---------- */
.projects-wrap { position: relative; }
.carousel-nav__btn {
  position: absolute; top: 14px; z-index: 5;
  width: 40px; height: 40px; border: 0; cursor: pointer; padding: 0;
  display: grid; place-items: center; line-height: 1;
  font-family: var(--font-display); font-size: 2rem; font-weight: 500;
  background: transparent; color: var(--cream);
  text-shadow: 0 1px 8px rgba(75, 46, 15, .55);
  transition: opacity .18s ease, transform .18s ease;
}
.carousel-nav__btn--prev { left: 14px; }
.carousel-nav__btn--next { right: 14px; }
.carousel-nav__btn:hover:not(:disabled) { transform: scale(1.18); }
.carousel-nav__btn:disabled { opacity: .35; pointer-events: none; }

.projects {
  display: flex; gap: 26px;
  overflow-x: auto; scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: 6px 2px 18px; margin: 0 -2px;
  scrollbar-width: thin; scrollbar-color: var(--secondary) transparent;
}
.projects:focus-visible { outline: 2px solid var(--secondary); outline-offset: 4px; border-radius: 8px; }
.projects::-webkit-scrollbar { height: 8px; }
.projects::-webkit-scrollbar-thumb { background: var(--secondary); border-radius: 999px; }
.projects::-webkit-scrollbar-track { background: transparent; }

.project {
  flex: 0 0 calc((100% - 2 * 26px) / 3);   /* exactly 3 cards visible */
  scroll-snap-align: start;
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
  transition: transform .2s ease, box-shadow .25s ease;
}
.project:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.project__thumb {
  height: 132px; display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
}
.thumb__mono { font-family: var(--font-mono); font-size: 1.35rem; font-weight: 500; color: var(--cream); letter-spacing: -.02em; }
.thumb--vla    { background: linear-gradient(135deg, var(--primary), var(--support)); }
.thumb--rex    { background: linear-gradient(135deg, var(--support), var(--sage)); }
.thumb--facegen { background: linear-gradient(135deg, var(--highlight), var(--support)); }
.thumb--cpu { background: linear-gradient(135deg, var(--secondary), var(--highlight)); }
.thumb--cpu .thumb__mono { color: var(--primary); }
.project__thumb::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(255,255,255,.22), transparent 60%);
}
.project__body { padding: 22px; display: flex; flex-direction: column; flex: 1; }
.project__title { margin: 0 0 8px; font-size: 1.18rem; color: var(--primary); }
.project__desc { margin: 0; color: var(--ink-soft); font-size: .96rem; }
.project__link {
  margin-top: 18px; font-family: var(--font-display); font-weight: 600;
  color: var(--support); align-self: flex-start;
}
.project__link:hover { color: var(--primary); }

/* ---------- Contact ---------- */
.contacts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.contact {
  background: var(--cream); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; display: flex; align-items: center; gap: 16px;
  transition: transform .18s ease, border-color .2s ease, box-shadow .2s ease;
}
.contact:hover { transform: translateY(-4px); border-color: var(--secondary); box-shadow: var(--shadow); }
.contact__icon {
  flex: none; width: 46px; height: 46px; border-radius: 12px;
  display: grid; place-items: center;
  background: var(--bg); border: 1px solid var(--line); color: var(--support);
  transition: background .2s ease, color .2s ease;
}
.contact:hover .contact__icon { background: var(--support); color: var(--cream); }
.contact__text { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.contact__label { font-family: var(--font-display); font-weight: 600; color: var(--primary); }
.contact__handle { font-family: var(--font-mono); font-size: .85rem; color: var(--ink-soft); overflow: hidden; text-overflow: ellipsis; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); padding: 28px 0; background: var(--cream); }
.footer__inner { display: flex; align-items: center; gap: 14px; justify-content: center; text-align: center; flex-wrap: wrap; }
.footer__icon { border-radius: 50%; }
.site-footer p { margin: 0; font-size: .9rem; color: var(--ink-soft); }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding: 56px 0; gap: 40px; }
  .hero__art { order: -1; }
  .about { grid-template-columns: 1fr; }
  .project { flex-basis: 78%; }                    /* peek of next card hints swipe */
  .contacts { grid-template-columns: repeat(2, 1fr); }

  .nav__toggle { display: flex; }
  .nav__links {
    position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--line);
    padding: 8px 6%; max-height: 0; overflow: hidden;
    transition: max-height .3s ease, padding .3s ease;
  }
  .nav__links.is-open { max-height: 340px; padding: 16px 6% 22px; }
  .nav__links li { width: 100%; padding: 8px 0; }
}

@media (max-width: 480px) {
  .contacts { grid-template-columns: 1fr; }
  .project { flex-basis: 86%; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; transition: none; }
}