/* Mateusz G. Twardawa — personal page · "winter canopy" theme
   Zero JavaScript, zero external resources. */

:root {
  --bg: #f8f5f6;          /* frost */
  --surface: #ffffff;
  --surface-2: #f1e8ec;
  --text: #1f1418;        /* deep winter night */
  --muted: #6a5960;
  --line: #e6dbe0;
  --accent: #6e002e;      /* clear January sky */
  --accent-strong: #4a001f;
  --accent-soft: #f5e6ec;
  --bark: #8a5a2b;        /* oak bark — small warm details */
  --link: #6e002e;
  --hero-ink: #ffffff;
  --shadow: 0 1px 2px rgba(40, 10, 24, .05), 0 8px 24px -12px rgba(40, 10, 24, .18);
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --maxw: 68rem;
  --radius: 10px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #140a0f;
    --surface: #1d1017;
    --surface-2: #26151e;
    --text: #f1e7eb;
    --muted: #b9a3ad;
    --line: #3a2430;
    --accent: #e9a6c3;
    --accent-strong: #f6cadc;
    --accent-soft: #2e1622;
    --bark: #dcae7a;
    --link: #e9a6c3;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 28px -14px rgba(0, 0, 0, .6);
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 1.0625rem/1.65 var(--sans);
  display: flex; flex-direction: column; min-height: 100vh;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--link); text-underline-offset: .18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 3px; }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.22; text-wrap: balance; letter-spacing: -.005em; }
h1 { font-size: clamp(2rem, 4.5vw, 3rem); margin: 0; }
h2 { font-size: 1.6rem; margin: 2.6rem 0 1rem; }
h3 { font-size: 1.18rem; margin: 1.8rem 0 .5rem; }
p { margin: 0 0 1rem; }

.skip { position: absolute; left: -999px; top: 0; background: var(--accent); color: var(--bg); padding: .5rem 1rem; z-index: 10; }
.skip:focus { left: 1rem; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 1rem; }

/* ------------------------------------------------------------ header */
.site-header { background: var(--surface); border-bottom: 1px solid var(--line); position: relative; z-index: 2; }
.site-header .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .6rem 2rem; padding-top: .9rem; padding-bottom: .9rem; }
.brand { display: flex; align-items: center; gap: .7rem; color: var(--text); text-decoration: none; }
.brand img { width: 34px; height: 34px; border-radius: 8px; }
.brand span { font-family: var(--serif); font-size: 1.2rem; font-weight: 600; line-height: 1.15; }
.brand small { display: block; font-family: var(--sans); font-size: .78rem; font-weight: 400; color: var(--muted); }
nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .15rem .3rem; }
nav a { display: block; color: var(--muted); text-decoration: none; font-size: .94rem; padding: .35rem .7rem; border-radius: 999px; }
nav a:hover { color: var(--text); background: var(--surface-2); }
nav a[aria-current="page"] { color: var(--accent-strong); background: var(--accent-soft); font-weight: 500; }

/* ------------------------------------------------------------ hero (photo) */
.hero {
  position: relative; color: var(--hero-ink);
  background: #2a0716 url(../img/flow-wide.jpg) center 35% / cover no-repeat;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(30, 6, 18, .10) 0%, rgba(30, 6, 18, .28) 45%, rgba(30, 6, 18, .78) 100%);
}
.hero .wrap { position: relative; padding-top: 3.2rem; padding-bottom: 2rem; }
.hero.home .wrap { padding-top: 10rem; padding-bottom: 7rem; }
.hero h1 { text-shadow: 0 2px 18px rgba(0, 0, 0, .35); }
.hero .sub { margin: .5rem 0 0; font-size: 1.1rem; opacity: .92; max-width: 44rem; text-shadow: 0 1px 10px rgba(0, 0, 0, .4); }
.hero .crumbs { margin: 0 0 .5rem; font-size: .88rem; opacity: .9; }
.hero .crumbs a { color: inherit; }
.credit { position: absolute; right: .6rem; bottom: .35rem; font-size: .68rem; opacity: .75; z-index: 1; }
.credit a { color: inherit; }
@media (max-width: 800px) {
  .hero { background-image: url(../img/flow-small.jpg); }
  .hero.home .wrap { padding-top: 6rem; padding-bottom: 5.5rem; }
}

main { flex: 1; padding: 2.4rem 0 3.5rem; }
main > .wrap > :first-child { margin-top: 0; }
.lead { font-size: 1.15rem; color: var(--muted); }

/* ------------------------------------------------------------ home */
.intro { display: grid; grid-template-columns: minmax(0, 17rem) 1fr; gap: 2.5rem; align-items: start; }
.intro figure { margin: -5.5rem 0 0; position: relative; z-index: 1; }
.intro img { border-radius: var(--radius); aspect-ratio: 3 / 4; object-fit: cover; width: 100%; border: 4px solid var(--surface); box-shadow: var(--shadow); }
.intro h2 { margin-top: 0; }
.actions { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1.4rem; }
.tags { list-style: none; padding: 0; margin: .4rem 0 1rem; display: flex; flex-wrap: wrap; gap: .45rem; }
.tags li { background: var(--accent-soft); color: var(--accent-strong); border-radius: 999px; padding: .2rem .8rem; font-size: .88rem; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem 2.5rem; }
@media (max-width: 760px) {
  .intro { grid-template-columns: 1fr; gap: 1.5rem; }
  .intro figure { max-width: 13rem; margin-top: -4rem; }
  .two-col { grid-template-columns: 1fr; }
}

/* ------------------------------------------------------------ buttons, notes, cards */
.button { display: inline-block; background: var(--accent); color: var(--bg); padding: .6rem 1.1rem; border-radius: 8px; text-decoration: none; font-weight: 500; font-size: .96rem; }
.button:hover { background: var(--accent-strong); }
.button.ghost { background: transparent; color: var(--accent); border: 1px solid var(--line); }
.button.ghost:hover { border-color: var(--accent); background: var(--accent-soft); }
.note { background: var(--accent-soft); border-left: 3px solid var(--accent); padding: .85rem 1.1rem; border-radius: 0 8px 8px 0; margin: 1rem 0 1.6rem; }
.note p:last-child { margin: 0; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem 1.25rem; box-shadow: var(--shadow); }

.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.section-head a { font-size: .92rem; }

/* ------------------------------------------------------------ badges */
.badge { display: inline-block; font-size: .72rem; letter-spacing: .04em; text-transform: uppercase; border: 1px solid var(--line); color: var(--muted); border-radius: 4px; padding: .05rem .45rem; margin-right: .4rem; vertical-align: .12em; white-space: nowrap; }
.badge.live { border-color: var(--accent); color: var(--accent); }
.badge.award, .badge.lead-role { border-color: var(--bark); color: var(--bark); }

/* ------------------------------------------------------------ publication / talk lists */
.pubs { list-style: none; padding: 0; margin: 0; }
.pubs li { display: grid; grid-template-columns: 2.5rem 1fr; gap: .8rem; padding: 1rem 0; border-top: 1px solid var(--line); }
.pubs li:last-child { border-bottom: 1px solid var(--line); }
.pubs .n { font-family: var(--serif); color: var(--muted); text-align: right; }
.pubs .t { font-weight: 600; }
.pubs .meta { color: var(--muted); font-size: .92rem; }
.year { font-family: var(--serif); font-size: 1.35rem; color: var(--bark); margin: 2.2rem 0 .3rem; }

/* ------------------------------------------------------------ timeline (projects, experience) */
.timeline { list-style: none; padding: 0; margin: 0; position: relative; }
.timeline > li { display: grid; grid-template-columns: 11rem 1fr; gap: 1.5rem; padding: 1.25rem 0; border-top: 1px solid var(--line); }
.timeline > li:last-child { border-bottom: 1px solid var(--line); }
.when { font-size: .88rem; color: var(--bark); font-variant-numeric: tabular-nums; padding-top: .15rem; }
.when .badge { display: table; margin: .45rem 0 0; }
.timeline h3 { margin: 0 0 .25rem; font-size: 1.12rem; }
.timeline .acr { font-family: var(--sans); font-weight: 700; letter-spacing: .02em; color: var(--accent-strong); }
.timeline .meta { color: var(--muted); font-size: .9rem; margin: 0 0 .5rem; }
.timeline p.role { margin: 0; }
.timeline .role-label { font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); display: block; margin-bottom: .1rem; }
@media (max-width: 640px) {
  .timeline > li { grid-template-columns: 1fr; gap: .35rem; }
  .when .badge { display: inline-block; margin: 0 0 0 .5rem; }
}

/* ------------------------------------------------------------ teaching */
.courses { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr)); gap: 1rem; }
.courses a { display: flex; flex-direction: column; height: 100%; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.05rem 1.2rem; text-decoration: none; color: var(--text); box-shadow: var(--shadow); transition: border-color .15s, transform .15s; }
.courses a:hover, .courses a:focus-visible { border-color: var(--accent); transform: translateY(-2px); }
.courses strong { font-family: var(--serif); font-size: 1.12rem; line-height: 1.3; margin-bottom: .35rem; }
.courses span { color: var(--muted); font-size: .88rem; }
.courses .forms { margin-top: auto; padding-top: .6rem; color: var(--bark); font-size: .82rem; }
@media (prefers-reduced-motion: reduce) { .courses a { transition: none; } .courses a:hover { transform: none; } }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr)); gap: 1rem; margin: 1rem 0 2rem; }
.stats div { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: .9rem 1rem; }
.stats b { display: block; font-family: var(--serif); font-size: 1.7rem; color: var(--accent-strong); line-height: 1.1; }
.stats span { color: var(--muted); font-size: .86rem; }

.facts { display: grid; grid-template-columns: max-content 1fr; gap: .5rem 1.5rem; margin: 0 0 1.6rem; padding: 1.1rem 1.25rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; }
@media (max-width: 480px) { .facts { grid-template-columns: 1fr; gap: 0; } .facts dd { margin-bottom: .6rem; } }
.files { padding-left: 1.2rem; }

/* ------------------------------------------------------------ footer */
.site-footer { background: #1c0a13; color: #cdb9c2; font-size: .9rem; }
.site-footer .wrap { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 1.5rem; padding-top: 2.4rem; padding-bottom: 2rem; }
.site-footer h2 { font-family: var(--sans); font-size: .76rem; text-transform: uppercase; letter-spacing: .1em; margin: 0 0 .7rem; color: #ffffff; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin: .3rem 0; }
.site-footer a { color: #cdb9c2; text-decoration-color: rgba(205, 185, 194, .4); }
.site-footer a:hover { color: #ffffff; }
@media (max-width: 700px) { .site-footer .wrap { grid-template-columns: 1fr; } }
.copy { grid-column: 1 / -1; border-top: 1px solid #3a1d2b; padding-top: 1rem; font-size: .82rem; color: #a38d97; }
.copy a { color: #a38d97; }

@media print {
  .hero { background: none; color: #000; }
  .hero::before, nav, .site-footer, .credit { display: none; }
  body { background: #fff; color: #000; }
}
.card p:last-child { margin-bottom: 0; }

/* ================================================================ v2 additions */
.hero .kicker { margin: 0 0 .7rem; font-size: .92rem; letter-spacing: .02em; opacity: .9; text-shadow: 0 1px 8px rgba(0,0,0,.4); }
.hero.home h1 { font-size: clamp(1.8rem, 3.8vw, 2.7rem); max-width: 46rem; }
.hero.home .wrap { padding-top: 7.5rem; padding-bottom: 3rem; }
@media (max-width: 800px) { .hero.home .wrap { padding-top: 4.5rem; padding-bottom: 2.4rem; } }

.bio { display: grid; grid-template-columns: 8.5rem 1fr; gap: 1.6rem; align-items: start; }
.bio img { width: 8.5rem; aspect-ratio: 1; object-fit: cover; object-position: 50% 50%; border-radius: 50%; border: 3px solid var(--surface); box-shadow: var(--shadow); }
.bio p { margin-bottom: .7rem; }
@media (max-width: 560px) { .bio { grid-template-columns: 1fr; } .bio img { width: 7rem; } }

.threads { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(14.5rem, 1fr)); gap: 1rem; }
.threads a { display: flex; flex-direction: column; height: 100%; padding: 1.1rem 1.2rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); color: var(--text); text-decoration: none; box-shadow: var(--shadow); transition: border-color .15s, transform .15s; }
.threads a:hover, .threads a:focus-visible { border-color: var(--accent); transform: translateY(-2px); }
.threads strong { font-family: var(--serif); font-size: 1.12rem; line-height: 1.3; margin-bottom: .45rem; }
.threads span { color: var(--muted); font-size: .92rem; }
.threads .more { margin-top: auto; padding-top: .7rem; color: var(--accent); font-size: .88rem; }
@media (prefers-reduced-motion: reduce) { .threads a { transition: none; } .threads a:hover { transform: none; } }

.band { margin: 2.8rem 0 0; padding: 1.6rem 1.7rem; border-radius: var(--radius); background: var(--accent-soft); border: 1px solid var(--line); display: grid; grid-template-columns: 1fr auto; gap: 1rem 2rem; align-items: center; }
.band h2 { margin: 0 0 .4rem; font-size: 1.35rem; }
.band p { margin: 0; }
@media (max-width: 700px) { .band { grid-template-columns: 1fr; } }

.news { list-style: none; padding: 0; margin: 0; }
.news li { display: grid; grid-template-columns: 5rem 1fr; gap: 1rem; padding: .7rem 0; border-top: 1px solid var(--line); }
.news li:last-child { border-bottom: 1px solid var(--line); }
.news .d { color: var(--bark); font-variant-numeric: tabular-nums; font-size: .92rem; }

.thread { padding-top: .5rem; }
.thread + .thread { border-top: 1px solid var(--line); margin-top: 2.5rem; padding-top: 1rem; }
.thread h2 { margin-top: 1.2rem; }
.q { font-family: var(--serif); font-size: 1.22rem; line-height: 1.45; color: var(--accent-strong); margin: 0 0 1.2rem; }
.kv { display: grid; grid-template-columns: 10rem 1fr; gap: .6rem 1.5rem; margin: 0 0 1.2rem; }
.kv dt { font-size: .78rem; text-transform: uppercase; letter-spacing: .07em; color: var(--muted); padding-top: .25rem; }
.kv dd { margin: 0; }
.kv dd.seek { background: var(--accent-soft); border-left: 3px solid var(--accent); padding: .5rem .8rem; border-radius: 0 6px 6px 0; }
@media (max-width: 640px) { .kv { grid-template-columns: 1fr; gap: .15rem; } .kv dd { margin-bottom: .7rem; } }
details.outputs { margin: .4rem 0 0; }
details.outputs summary { cursor: pointer; color: var(--accent); font-size: .95rem; }
details.outputs ul { margin: .6rem 0 0; padding-left: 1.2rem; font-size: .93rem; }
details.outputs li { margin: .35rem 0; }

.jump { display: flex; flex-wrap: wrap; gap: .4rem; margin: 0 0 1.5rem; padding: 0; list-style: none; }
.jump a { display: block; padding: .3rem .8rem; border: 1px solid var(--line); border-radius: 999px; text-decoration: none; font-size: .9rem; color: var(--muted); background: var(--surface); }
.jump a:hover { color: var(--accent); border-color: var(--accent); }

.offer { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: 1rem; margin: 1rem 0 0; }
.offer .card h3 { margin-top: 0; }
.offer ul { margin: 0; padding-left: 1.1rem; }
.offer li { margin: .3rem 0; }

.cv h2 { font-size: 1.3rem; border-bottom: 1px solid var(--line); padding-bottom: .3rem; }
.cv-list { list-style: none; padding: 0; margin: 0; }
.cv-list li { display: grid; grid-template-columns: 9.5rem 1fr; gap: 1rem; padding: .45rem 0; }
.cv-list .d { color: var(--bark); font-size: .9rem; font-variant-numeric: tabular-nums; }
@media (max-width: 600px) { .cv-list li { grid-template-columns: 1fr; gap: 0; } }
.cv ol.plain { padding-left: 1.6rem; }
.cv ol.plain li { margin: .45rem 0; font-size: .95rem; }
.updated { color: var(--muted); font-size: .85rem; }
.orig { display: block; color: var(--muted); font-size: .85rem; font-style: italic; margin-top: .15rem; }
ol.topics { padding-left: 1.5rem; margin: .3rem 0 1rem; }
ol.topics li { margin: .25rem 0; }