/* ---------- Tokens ---------- */
:root {
  --ink: #12151f;
  --ink-soft: #1c2030;
  --paper: #ffffff;
  --paper-alt: #f3f5f8;
  --text: #2b3040;
  --muted: #6b7285;
  --accent: #14a38b;
  --accent-light: #5eead4;
  --nav-h: 64px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--nav-h); }
body { margin: 0; font-family: var(--font); line-height: 1.7; color: var(--text); background: var(--paper); }
h1, h2, h3, p, ul { margin: 0; }
ul { padding: 0; list-style: none; }
a { color: var(--accent); }
:focus-visible { outline: 3px solid var(--accent-light); outline-offset: 3px; }

.container { width: min(1000px, 100% - 3rem); margin-inline: auto; }

/* ---------- Navbar ---------- */
.navbar {
  position: fixed; inset: 0 0 auto 0; z-index: 50; height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 clamp(1rem, 4vw, 3rem);
  transition: background .3s, box-shadow .3s;
}
.navbar.is-scrolled { background: var(--ink); box-shadow: 0 2px 12px rgb(0 0 0 / .25); }
.navbar__brand { color: #fff; font-weight: 700; font-size: 1.15rem; text-decoration: none; }
.navbar__menu { display: flex; gap: 2rem; }
.navbar__menu a { color: #e6e9f2; text-decoration: none; padding: .4rem 0; border-bottom: 2px solid transparent; transition: color .2s, border-color .2s; }
.navbar__menu a:hover, .navbar__menu a.is-active { color: var(--accent-light); border-color: var(--accent-light); }

.navbar__toggle { display: none; background: none; border: 0; padding: .5rem; margin: 0 -.5rem 0 auto; cursor: pointer; }
.navbar__toggle span { display: block; width: 24px; height: 2px; margin: 5px 0; background: #fff; transition: transform .3s, opacity .3s; }
.navbar__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.navbar__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Banner ---------- */
.banner {
  position: relative; min-height: max(320px, 50vh); padding-top: var(--nav-h); display: grid; place-items: center; text-align: center; color: #fff;
  background:
    radial-gradient(circle at 20% 25%, rgb(20 163 139 / .35), transparent 45%),
    radial-gradient(circle at 80% 75%, rgb(94 234 212 / .15), transparent 40%),
    var(--ink);
}
.banner h1 { font-size: clamp(2.2rem, 6vw, 3.5rem); line-height: 1.1; letter-spacing: -.02em; }
.banner p { margin-top: 1rem; font-size: clamp(1.1rem, 3vw, 1.6rem); color: var(--accent-light); }
.banner__arrow {
  position: absolute; bottom: 1.25rem; left: 50%; width: 16px; height: 16px; margin-left: -8px; margin-bottom: 1rem;
  border: solid #fff; border-width: 0 3px 3px 0; transform: rotate(45deg);
  animation: bounce 2s infinite;
}
@keyframes bounce { 50% { transform: translateY(10px) rotate(45deg); } }

/* ---------- Sections ---------- */
.section { padding: 6rem 0; }
.section--alt { background: var(--paper-alt); }
.section__title { font-size: clamp(1.8rem, 4vw, 2.5rem); text-align: center; margin-bottom: 1rem; color: var(--ink); }
.section__title::after { content: ""; display: block; width: 56px; height: 4px; margin: .75rem auto 0; background: var(--accent); border-radius: 2px; }
.section__lead { max-width: 60ch; margin: 1.5rem auto 3rem; text-align: center; color: var(--muted); }
.section h3 { color: var(--ink); }

/* About */
.about { display: grid; grid-template-columns: 240px 1fr; gap: 3rem; align-items: center; margin-top: 3rem; }
.about__photo { display: block; width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 50%; }
.about__text p + p { margin-top: 1rem; }
.about__text h3 { margin: 1.5rem 0 .75rem; }
.tags { display: flex; flex-wrap: wrap; gap: .6rem; }
.tags li { padding: .25rem 1rem; border: 2px solid var(--accent); border-radius: 999px; font-weight: 600; color: var(--accent); }

/* What I do */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 2rem; margin-top: 3rem; }
.card { background: var(--paper); padding: 2rem; border-top: 4px solid var(--accent); border-radius: 4px; box-shadow: 0 2px 10px rgb(18 21 31 / .08); }
.card h3 { margin-bottom: .75rem; font-size: 1.4rem; }

/* Experience */
.experience { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: 3rem; align-items: start; }
.experience h3 { margin-bottom: 1.5rem; text-align: center; font-size: 1.2rem; }

.skills, .employers { display: grid; gap: 1rem; }
.skills { grid-template-columns: repeat(auto-fill, minmax(84px, 1fr)); }
.employers { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }

.skills a, .employers a {
  position: relative; display: grid; place-items: center; padding: .9rem;
  /* background: var(--paper-alt); border-radius: 8px; */
  transition: transform .25s ease, box-shadow .25s ease;
}
.skills a { aspect-ratio: 1; }
.employers a { aspect-ratio: 3 / 2; }
.skills a:hover, .skills a:focus-visible, .employers a:hover, .employers a:focus-visible {
  z-index: 1; transform: scale(1.18);
}
.skills img, .employers img { display: block; width: 100%; height: 100%; object-fit: contain; }

@media (max-width: 860px) {
  .experience { grid-template-columns: 1fr; gap: 3rem; }
}

.btn { display: inline-block; padding: .8rem 2.2rem; background: var(--accent); color: #fff; font-weight: 700; text-decoration: none; border-radius: 4px; transition: transform .2s, background .2s; }
.btn:hover { background: var(--ink); transform: translateY(-2px); }
.btn--light { background: transparent; color: #fff; border: 2px solid var(--accent-light); }
.btn--light:hover { background: var(--accent-light); color: var(--ink); }

/* Projects */
.filters { display: flex; flex-wrap: wrap; justify-content: center; gap: .6rem; margin-bottom: 2rem; }
.filters[hidden], .projects__empty[hidden] { display: none; }
.filter {
  padding: .3rem 1rem; border: 2px solid var(--accent); border-radius: 999px; background: transparent;
  color: var(--accent); font: inherit; font-size: .9rem; font-weight: 600; cursor: pointer;
  transition: background .2s, color .2s;
}
.filter:hover { background: rgb(20 163 139 / .12); }
.filter[aria-pressed="true"] { background: var(--accent); color: #fff; }
.projects__empty { margin-top: 1rem; text-align: center; color: var(--muted); }

.projects { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 1.25rem; }
.project { position: relative; aspect-ratio: 4 / 3; border: 0; padding: 0; width: 100%; cursor: pointer; overflow: hidden; border-radius: 4px; color: #fff; font: inherit; }
.project__thumb { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.project__label { position: absolute; inset: 0; display: grid; place-items: center; padding: 1rem; text-align: center; font-weight: 700; background: rgb(18 21 31 / .8); opacity: 0; transition: opacity .25s; }
.project:hover .project__thumb { transform: scale(1.08); }
.project:hover .project__label, .project:focus-visible .project__label { opacity: 1; }

/* Modal */
.modal { width: min(700px, 100% - 2rem); max-height: 90vh; padding: 0; border: 0; border-radius: 6px; overflow: auto; color: var(--text); }
.modal::backdrop { background: rgb(18 21 31 / .75); }
.modal[open] { animation: pop .25s ease-out; }
@keyframes pop { from { opacity: 0; transform: scale(.96); } }
.modal__close { position: absolute; top: .5rem; right: .75rem; z-index: 1; background: rgb(18 21 31 / .6); color: #fff; border: 0; width: 36px; height: 36px; border-radius: 50%; font-size: 1.5rem; line-height: 1; cursor: pointer; }
.modal__visual { display: block; width: 100%; aspect-ratio: 16 / 7; object-fit: cover; }
.modal__body { padding: 1.75rem 2rem 2rem; }
.modal__subtitle { color: var(--accent); font-weight: 600; margin-bottom: 1rem; }
.modal__links { margin-top: 1.25rem; display: flex; flex-wrap: wrap; gap: 1.25rem; font-weight: 600; }

/* Contact */
.contact { padding: 6rem 0; text-align: center; color: #fff; background: var(--ink); }
.contact .section__title { color: #fff; }
.contact .section__lead { margin-bottom: 2rem; color: #b9bfd0; }
.socials { display: flex; flex-wrap: wrap; justify-content: center; gap: 1.5rem; margin-top: 3rem; }
.socials a { color: #b9bfd0; text-decoration: none; transition: color .2s; }
.socials a:hover { color: var(--accent-light); }

/* Footer */
.footer { padding: 2rem 1rem; text-align: center; background: var(--ink-soft); color: #8b92a8; font-size: .9rem; }

/* ---------- Back to top ---------- */
.back-to-top {
  position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 40; width: 48px; height: 48px;
  display: grid; place-items: center; border-radius: 50%; background: #2f6a67; color: #fff;
  box-shadow: 0 2px 10px rgb(0 0 0 / .3);
  opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: opacity .3s, transform .3s, visibility .3s, filter .2s;
}
.back-to-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.back-to-top:hover { filter: brightness(1.2); }

/* ---------- Reveal on scroll ---------- */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s, transform .6s; }
.js .reveal.is-visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 760px) {
  .navbar__toggle { display: block; }
  .navbar__menu {
    position: absolute; top: var(--nav-h); left: 0; right: 0; flex-direction: column; gap: 0;
    padding: .5rem 1.5rem 1rem; background: var(--ink); transform: translateY(-120%); visibility: hidden;
    transition: transform .3s, visibility .3s;
  }
  .navbar__menu.is-open { transform: none; visibility: visible; }
  .navbar__menu a { display: block; padding: .8rem 0; }
  .navbar.is-open { background: var(--ink); }
  .about { grid-template-columns: 1fr; text-align: center; }
  .about__photo { width: 180px; margin-inline: auto; }
  .tags { justify-content: center; }
  .section, .contact { padding: 4rem 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}