/* tahokovi.github.io — production stylesheet ("The Pipe" design). */

@font-face {
  font-family: "Schibsted Grotesk";
  src: url("assets/fonts/schibsted-grotesk-latin.woff2") format("woff2");
  font-weight: 400 800;
  font-style: normal;
  font-display: swap;
}

:root {
  --paper: #fcfcfa;
  --ink: #211f1c;
  --muted: #6b665f;
  --line: #e6e3dc;
  --cardinal: #8c1515;
  --cardinal-deep: #701010;
  --tint: #f6efec;
  --sans: "Schibsted Grotesk", "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --shell: 64rem;
  --pad-x: clamp(1.25rem, 4vw, 3rem);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--cardinal); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { color: var(--cardinal-deep); }
:focus-visible { outline: 2px solid var(--cardinal); outline-offset: 2px; border-radius: 2px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: var(--pad-x); top: -3rem; z-index: 10;
  background: var(--ink); color: #fff; padding: 0.5rem 0.9rem; border-radius: 0 0 6px 6px;
  transition: top 120ms ease;
}
.skip-link:focus { top: 0; }

main {
  max-width: var(--shell); margin: 0 auto; padding: 0 var(--pad-x);
  min-height: 100svh; display: flex; flex-direction: column;
}
main > * { width: 100%; }
.colophon { margin-top: auto; }

/* ---------- Hero / masthead ---------- */

.hero { padding-top: clamp(2.5rem, 8vh, 5.5rem); }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(1.5rem, 5vw, 4rem);
  align-items: start;
}

.hero-role {
  margin: 0 0 0.6rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cardinal);
}

.hero-name { margin: 0; font-size: clamp(2rem, 5.2vw, 3.4rem); font-weight: 750; letter-spacing: -0.02em; line-height: 1.04; }
.hero-name a { color: inherit; text-decoration: none; }

.hero-deck {
  margin: 1.1rem 0 0;
  font-size: clamp(1.125rem, 2.2vw, 1.375rem);
  line-height: 1.45;
  max-width: 34ch;
  text-wrap: balance;
}

.hero-affiliation { margin: 0.9rem 0 0; max-width: 44ch; color: var(--muted); font-size: 1rem; }

.hero-fields {
  list-style: none; margin: 1.1rem 0 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 0.4rem 0.6rem;
  anchor-name: --field-row;
}
.hero-fields button {
  display: inline-flex; align-items: center; gap: 0.5rem; min-height: 44px;
  font: inherit; font-size: 0.8125rem; font-weight: 550; color: var(--muted);
  border: 1px solid var(--line); border-radius: 999px; padding: 0.4rem 0.65rem 0.4rem 0.85rem;
  background: #fff; cursor: pointer;
  transition: color 140ms ease, background-color 140ms ease, border-color 140ms ease, transform 140ms ease;
}
.hero-fields button span {
  display: inline-grid; place-items: center; width: 1.25rem; height: 1.25rem;
  border: 1px solid currentColor; border-radius: 50%;
  font-family: var(--mono); font-size: 0.6875rem; line-height: 1;
}
.hero-fields button:hover {
  color: var(--cardinal-deep); background: var(--tint); border-color: var(--cardinal); transform: translateY(-1px);
}

.field-popover {
  width: min(22rem, calc(100vw - 2rem));
  margin: 0; padding: 1rem 3rem 1rem 1rem;
  color: var(--ink); background: #fff;
  border: 1px solid var(--cardinal); border-radius: 10px;
  box-shadow: 0 6px 8px rgb(33 31 28 / 0.14);
  font-family: var(--sans); font-size: 0.9375rem; line-height: 1.5;
}
.field-popover::backdrop { background: transparent; }
.field-popover p { margin: 0; }
.field-popover-title { margin-bottom: 0.35rem !important; color: var(--cardinal-deep); font-weight: 700; }
.field-popover-close {
  position: absolute; top: 0.35rem; right: 0.35rem;
  width: 44px; height: 44px; padding: 0;
  color: var(--muted); background: transparent; border: 0; border-radius: 6px;
  font: inherit; font-size: 1.35rem; line-height: 1; cursor: pointer;
}
.field-popover-close:hover { color: var(--cardinal-deep); background: var(--tint); }

@supports (position-anchor: --field-row) {
  .field-popover {
    position: fixed; position-anchor: --field-row;
    inset: auto; top: anchor(bottom); left: 50vw;
    margin-top: 0.6rem; transform: translateX(-50%);
  }
}

@media (prefers-reduced-motion: no-preference) {
  .field-popover:popover-open { animation: field-popover-in 160ms cubic-bezier(0.25, 1, 0.5, 1) both; }
}
@keyframes field-popover-in {
  from { opacity: 0; transform: translateX(-50%) translateY(-4px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  .hero-fields button { transition: none; }
  .hero-fields button:hover { transform: none; }
}

.portrait { margin: 0.4rem 0 0; width: clamp(150px, 21vw, 230px); }
.portrait img { width: 100%; aspect-ratio: 4 / 4.4; object-fit: cover; object-position: 50% 42%; border-radius: 12px; }
.portrait figcaption { margin-top: 0.5rem; font-size: 0.78rem; color: var(--muted); }

/* ---------- Choices + console ---------- */

.choices {
  margin-top: clamp(1.6rem, 4vh, 2.8rem);
  padding-top: 0.8rem;
  border-top: 1px solid var(--line);
}
.choices ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.55rem; }
.choices li { position: relative; }
.choices a {
  position: relative;
  display: inline-flex; align-items: center; min-height: 44px;
  color: var(--ink); text-decoration: none; font-weight: 650; font-size: 1.0625rem;
  background: #fff; border: 1px solid var(--line); border-radius: 8px;
  padding: 0.5rem 0.9rem;
  transition: color 140ms ease, background-color 140ms ease, border-color 140ms ease, transform 140ms ease;
}
.choices a::before {
  content: "\2192"; order: 2; margin-left: 0.55rem;
  color: var(--cardinal); font-size: 0.9em; line-height: 1;
  transition: transform 140ms ease, color 140ms ease;
}
.choices a:hover { color: var(--cardinal-deep); background: var(--tint); border-color: var(--cardinal); transform: translateY(-1px); }
.choices a:hover::before { transform: translateX(2px); }
.choices a[aria-current="true"] { background: var(--cardinal); border-color: var(--cardinal); color: #fff; }
.choices a[aria-current="true"]::before { color: #fff; }
.choices a[aria-current="true"]:hover { background: var(--cardinal-deep); border-color: var(--cardinal-deep); color: #fff; }

/* the quiet hint: the function each choice will run */
.choices a::after {
  content: attr(data-fn);
  position: absolute; left: 0.7rem; top: calc(100% + 0.22rem);
  font-family: var(--mono); font-size: 0.6875rem; font-weight: 400; color: var(--muted);
  opacity: 0; transform: translateY(-2px); transition: opacity 140ms ease, transform 140ms ease;
  pointer-events: none; white-space: nowrap;
}
.choices a:hover::after, .choices a:focus-visible::after { opacity: 0.75; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .choices a, .choices a::before, .choices a::after { transition: none; }
  .choices a:hover, .choices a:hover::before { transform: none; }
}

.console {
  margin: 1rem 0 0; min-height: 1.6rem;
  font-family: var(--mono); font-size: 0.8125rem; line-height: 1.6rem;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.console .cmd { color: var(--ink); }
.console .cmd .fn { color: var(--cardinal); }
.console .cmd.typing::after {
  content: ""; display: inline-block; width: 1px; height: 0.95em;
  background: var(--cardinal); margin-left: 1px; vertical-align: -0.12em;
}
html:not(.js) .console { display: none; }

/* ---------- View routing ---------- */

.view { padding: clamp(1.8rem, 4.5vh, 3rem) 0 1rem; border-bottom: 1px solid var(--line); }
html.js .view { display: none; border-bottom: 0; }
html.js body[data-view="research"] #research,
html.js body[data-view="about"] #about,
html.js body[data-view="cv"] #cv,
html.js body[data-view="contact"] #contact { display: block; }

/* compact masthead while a view is open */
html.js body:not([data-view="home"]) .hero { padding-top: clamp(1.4rem, 4vh, 2.2rem); }
html.js body:not([data-view="home"]) .hero-deck,
html.js body:not([data-view="home"]) .hero-affiliation,
html.js body:not([data-view="home"]) .hero-fields,
html.js body:not([data-view="home"]) .portrait { display: none; }
html.js body:not([data-view="home"]) .hero-name { font-size: 1.375rem; }
html.js body:not([data-view="home"]) .hero-role { margin-bottom: 0.2rem; font-size: 0.6875rem; }
html.js body:not([data-view="home"]) .choices { margin-top: 0.9rem; }

/* entrance: content resolves from the command line */
@media (prefers-reduced-motion: no-preference) {
  html.js .view.entering { animation: view-in 260ms cubic-bezier(0.2, 0.7, 0.3, 1) both; }
  html.js .view.entering .work { animation: view-in 300ms cubic-bezier(0.2, 0.7, 0.3, 1) both; }
  html.js .view.entering .work:nth-child(3) { animation-delay: 40ms; }
  html.js .view.entering .work:nth-child(4) { animation-delay: 80ms; }
  html.js .view.entering .work:nth-child(5) { animation-delay: 120ms; }
}
@keyframes view-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

.view-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.8rem 1.6rem; margin-bottom: 1.4rem; }
.view-head h2 { margin: 0; font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 720; letter-spacing: -0.015em; }
.view-head h2:focus { outline: none; }
.view-head h2:focus-visible { outline: 2px solid var(--cardinal); outline-offset: 4px; }

/* ---------- Research ---------- */

.filters { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.filters button {
  font: inherit; font-size: 0.8125rem; font-weight: 550; color: var(--muted);
  background: #fff; border: 1px solid var(--line); border-radius: 999px;
  padding: 0.42rem 0.85rem; min-height: 34px; cursor: pointer;
}
.filters button:hover { border-color: var(--muted); color: var(--ink); }
.filters button[aria-pressed="true"] { background: var(--tint); border-color: var(--cardinal); color: var(--cardinal-deep); }
html:not(.js) .filters { display: none; }

#research[data-filter="authored"] .block:not([data-block="authored"]),
#research[data-filter="progress"] .block:not([data-block="progress"]),
#research[data-filter="supported"] .block:not([data-block="supported"]) { display: none; }

.block { margin-bottom: 2.2rem; }
.block-head { margin-bottom: 1rem; }
.block-head h3 { margin: 0; font-size: 0.8125rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink); }
.block-head p { margin: 0.2rem 0 0; font-size: 0.9rem; color: var(--muted); max-width: 60ch; }

.work { padding: 1rem 0; border-top: 1px solid var(--line); max-width: 66ch; }
.work-meta { margin: 0 0 0.3rem; font-family: var(--mono); font-size: 0.72rem; color: var(--muted); }
.work h4 { margin: 0; font-size: 1.0625rem; font-weight: 650; line-height: 1.4; }
.work h4 a { color: inherit; }
.work h4 a:hover { color: var(--cardinal-deep); }
.work-people { margin: 0.25rem 0 0; font-size: 0.9375rem; color: var(--muted); }
.work-note { margin: 0.35rem 0 0; font-size: 0.875rem; color: var(--muted); }
.work-compact h4 { font-size: 1rem; }

/* ---------- About ---------- */

.about-grid { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: clamp(1.5rem, 4vw, 3.5rem); }
.bio p { margin: 0 0 1rem; max-width: 58ch; }
.experience h3 { margin: 0 0 0.8rem; font-size: 0.8125rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; }
.experience ul { list-style: none; margin: 0; padding: 0; }
.experience li { display: grid; grid-template-columns: 6.2em minmax(0, 1fr); gap: 0.8rem; padding: 0.5rem 0; border-top: 1px solid var(--line); font-size: 0.9375rem; }
.experience li > span:first-child { color: var(--muted); font-family: var(--mono); font-size: 0.78rem; line-height: 1.9; }

/* ---------- CV / Contact ---------- */

.cv-date { margin: 0 0 1.2rem; font-family: var(--mono); font-size: 0.78rem; color: var(--muted); }
.cv-actions { display: flex; flex-wrap: wrap; gap: 1rem 1.4rem; align-items: center; }

.button {
  display: inline-flex; align-items: center; min-height: 44px;
  background: var(--cardinal); color: #fff; text-decoration: none;
  font-weight: 650; font-size: 0.9375rem; padding: 0 1.3rem; border-radius: 8px;
}
.button:hover { background: var(--cardinal-deep); color: #fff; }
.text-link { font-weight: 550; display: inline-flex; align-items: center; min-height: 44px; }

.contact-email { margin: 0 0 1rem; font-size: clamp(1.25rem, 3vw, 1.75rem); font-weight: 650; }
address { font-style: normal; color: var(--muted); margin-bottom: 1.2rem; }
.socials { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.4rem 1.4rem; }
.socials a { display: inline-flex; align-items: center; min-height: 44px; font-weight: 550; }

/* ---------- Footer ---------- */

.colophon { display: flex; flex-wrap: wrap; gap: 0.3rem 1.5rem; justify-content: space-between; padding: 2.2rem 0 1.6rem; font-size: 0.8125rem; color: var(--muted); }
.colophon p { margin: 0; }

/* ---------- No-JS: an ordinary stacked page ---------- */
html:not(.js) .view { border-top: 1px solid var(--line); }

/* ---------- Mobile ---------- */

@media (max-width: 44rem) {
  .hero { padding-top: 1.6rem; }
  .hero-grid { grid-template-columns: minmax(0, 1fr) auto; gap: 1rem; }
  .portrait { width: 96px; margin-top: 0.2rem; }
  .portrait img { aspect-ratio: 1 / 1.05; border-radius: 10px; }
  .portrait figcaption { display: none; }
  .hero-deck { font-size: 1.0625rem; }
  .hero-affiliation { font-size: 0.9375rem; }
  .choices ul { gap: 0.5rem; }
  .choices a { font-size: 1rem; }
  .console { font-size: 0.72rem; white-space: normal; overflow: visible; }
  .about-grid { grid-template-columns: minmax(0, 1fr); }
  .view-head { flex-direction: column; align-items: flex-start; gap: 0.6rem; }
}

@media (max-width: 26rem) {
  .choices ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .choices a { width: 100%; justify-content: space-between; }
  .choices a::after { display: none; }
}

@media print {
  html.js .view { display: block !important; }
  .console, .filters, .skip-link { display: none !important; }
}