/* ============================================================
   Roksana Goworek — personal site
   Palette: deep ink-indigo, muted multi-hue "sense" accents.
   Type: Space Grotesk (display) / Newsreader (body) / IBM Plex Mono (utility)
   ============================================================ */

:root {
  --bg:        #0E0F1A;
  --surface:   #16182A;
  --text:      #ECEAE3;
  --muted:     #9A9DB4;
  --line:      #262A40;
  --accent:    #8A92C9;   /* periwinkle */
  --accent-ink:#AEB4DC;

  /* "sense" hues — used in the canvas and sparingly in type */
  --s-teal:    #6FA8A0;
  --s-peri:    #8A92C9;
  --s-rose:    #C98AA6;
  --s-amber:   #C9A86F;

  --maxw: 880px;
  --pad: clamp(1.1rem, 4vw, 2rem);

  --f-display: "Sora", system-ui, sans-serif;
  --f-body:    "Newsreader", Georgia, serif;
  --f-mono:    "IBM Plex Mono", ui-monospace, monospace;
}

[data-theme="light"] {
  --bg:        #EEF0F6;
  --surface:   #FFFFFF;
  --text:      #1B1D2A;
  --muted:     #565A77;
  --line:      #D5D9E6;
  --accent:    #5760A8;
  --accent-ink:#434C8F;
  --s-teal:    #3E7A72;
  --s-peri:    #5760A8;
  --s-rose:    #A85C7E;
  --s-amber:   #9A7A3C;
}

* { box-sizing: border-box; }

html { background: var(--bg); scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--text);
  background: transparent;
  font-family: var(--f-body);
  font-size: 1.075rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* the drifting embedding field, behind everything */
#field {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;     /* never blocks a real click */
}

.wrap {
  position: relative;
  z-index: 1;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--pad);
}

/* ---------- top bar ---------- */
.topbar {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1.4rem var(--pad) 0;
  font-family: var(--f-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}
.topbar nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 1.1rem;
}
.topbar nav a:hover { color: var(--text); }
.topbar nav a[aria-current="page"] { color: var(--text); }
.topbar .home { color: var(--text); text-decoration: none; }

#theme-toggle {
  font: inherit;
  color: var(--muted);
  background: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.2rem 0.7rem;
  cursor: pointer;
  margin-left: 1.1rem;
}
#theme-toggle:hover { color: var(--text); border-color: var(--muted); }

/* ---------- hero ---------- */
.hero {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding-top: clamp(2.5rem, 12vh, 7rem);
  padding-bottom: 0.5rem;
}
.eyebrow {
  font-family: var(--f-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 0 0 0.5rem;
}
.hero h1 {
  font-family: "Times New Roman", Times, serif;
  font-weight: 700;
  font-size: clamp(2.7rem, 9vw, 4.6rem);
  line-height: 1.0;
  letter-spacing: -0.01em;
  margin: 0;
}
.hero .tagline {
  font-family: var(--f-body);
  /* font-style: italic; */
  font-size: clamp(1.15rem, 2.8vw, 1.5rem);
  line-height: 1.45;
  color: var(--text);
  margin: 1.4rem 0 0;
  max-width: 44ch;
}
/* one phrase, several senses */
.tagline .s1 { color: var(--s-teal); font-style: normal; }
.tagline .s2 { color: var(--s-peri); font-style: normal; }
.tagline .s3 { color: var(--s-rose); font-style: normal; }

/* hero profile links row */
.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.7rem 0 0;
  padding: 0;
  list-style: none;
}
.hero-links a {
  font-family: var(--f-mono);
  font-size: 0.8rem;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.3rem 0.7rem;
}
.hero-links a:hover { color: var(--accent-ink); border-color: var(--accent); }

/* ---------- sections ---------- */
section { padding: 3.4rem 0; }
.intro { padding-top: 0.75rem; }
.sec-label {
  font-family: var(--f-display);
  font-size: 1.45rem;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: none;
  color: var(--text);
  margin: 0 0 1.5rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--line);
}
section h2 {
  font-family: var(--f-display);
  font-weight: 500;
  font-size: 1.05rem;   /* the mono label does the heavy lifting; h2 stays quiet */
  margin: 0;
}
.prose p { margin: 0 0 1.1rem; max-width: 62ch; }
.prose a { color: var(--accent-ink); text-decoration: none; border-bottom: 1px solid var(--line); }
.prose a:hover { border-color: var(--accent-ink); }

/* ---------- publications ---------- */
.pub-list { list-style: none; margin: 0; padding: 0; }
.pub {
  display: grid;
  grid-template-columns: 4.2rem 1fr;
  gap: 0 1.4rem;
  padding: 0.8rem 0;
  border-top: 1px solid var(--line);
}
.pub:last-child { border-bottom: 1px solid var(--line); }
.pub .yr {
  font-family: var(--f-mono);
  font-size: 0.82rem;
  color: var(--muted);
  padding-top: 0.28rem;
}
.pub .title {
  font-family: var(--f-display);
  font-weight: 500;
  font-size: 1.08rem;
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 0 0 0.2rem;
}
.pub .title a { color: inherit; text-decoration: none; }
.pub .title a:hover { color: var(--accent-ink); }
.pub .authors {
  font-family: var(--f-body);
  font-size: 0.95rem;
  color: var(--muted);
  margin: 0 0 0.08rem;
}
.pub .authors .me { color: var(--text); font-weight: 600; }
.pub .venue {
  font-family: var(--f-mono);
  font-size: 0.76rem;
  color: var(--muted);
  margin: 0 0 0.4rem;
}
.chips { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.chip {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.03em;
  color: var(--accent-ink);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0.12rem 0.5rem;
}
.chip:hover { border-color: var(--accent-ink); background: var(--surface); }
.chip.todo { color: var(--muted); }

/* ---------- updates timeline ---------- */
.timeline { list-style: none; margin: 0; padding: 0; }
.timeline li {
  display: grid;
  grid-template-columns: 4.2rem 1fr;
  gap: 0 1.4rem;
  padding: 0.7rem 0;
}
.timeline .date {
  font-family: var(--f-mono);
  font-size: 0.8rem;
  color: var(--accent);
}
.timeline .what { color: var(--text); }

/* ---------- updates: neural timeline ---------- */
.timeline-nn {
  --axis: 9.6rem;          /* x-position of the vertical line */
  --date-w: 8.4rem;
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}
.timeline-nn::before {     /* the axon running down the left */
  content: "";
  position: absolute;
  left: var(--axis);
  top: 0.7rem;
  bottom: 0.7rem;
  width: 2px;
  background: linear-gradient(to bottom, transparent, var(--accent) 12%, var(--accent) 88%, transparent);
  opacity: 0.4;
}
.tl-item {
  position: relative;
  display: grid;
  grid-template-columns: var(--date-w) 1fr;
  column-gap: 2.6rem;
  padding: 0.55rem 0;
  align-items: start;
}
.tl-date {
  font-family: var(--f-mono);
  font-size: 0.74rem;
  color: var(--muted);
  text-align: right;
  padding-top: 0.2rem;
  white-space: nowrap;
}
.tl-title {
  font-family: var(--f-body);
  font-size: 1.0rem;
  line-height: 1.35;
  color: var(--text);
}
.tl-title a { color: inherit; text-decoration: none; border-bottom: 1px solid var(--line); }
.tl-title a:hover { color: var(--accent-ink); border-color: var(--accent-ink); }

/* the neuron sitting on the axis */
.tl-node {
  --nh: var(--s-peri);
  position: absolute;
  left: var(--axis);
  top: 0.5rem;
  transform: translateX(-50%);
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--nh);
  box-shadow: 0 0 0 4px var(--bg), 0 0 10px color-mix(in srgb, var(--nh) 55%, transparent);
  z-index: 1;
  transition: transform 0.15s ease;
}
.tl-item:hover .tl-node { transform: translateX(-50%) scale(1.25); }

/* hue cycle, echoing the hero field */
.tl-item:nth-child(4n+1) .tl-node { --nh: var(--s-teal); }
.tl-item:nth-child(4n+2) .tl-node { --nh: var(--s-peri); }
.tl-item:nth-child(4n+3) .tl-node { --nh: var(--s-rose); }
.tl-item:nth-child(4n)   .tl-node { --nh: var(--s-amber); }

/* multi-month items: the neuron becomes a capsule spanning downward */
.tl-span .tl-node {
  height: 2.4rem;
  width: 8px;
  border-radius: 6px;
  background: linear-gradient(to bottom, var(--nh), color-mix(in srgb, var(--nh) 22%, transparent));
}
.tl-item.tl-span:hover .tl-node { transform: translateX(-50%) scaleX(1.25); }

.tl-more {
  margin: 1.3rem 0 0 calc(var(--date-w) + 2.6rem);
  font-family: var(--f-mono);
  font-size: 0.78rem;
  color: var(--muted);
  background: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.35rem 0.95rem;
  cursor: pointer;
}
.tl-more:hover { color: var(--text); border-color: var(--muted); }
.timeline-nn:not(.expanded) .tl-extra { display: none; }

@media (max-width: 560px) {
  .timeline-nn { --axis: 5.4rem; --date-w: 4.5rem; }
  .tl-item { column-gap: 1.4rem; }
  .tl-date { white-space: normal; font-size: 0.7rem; }
}

/* ---------- cards (demos / talks / favourites) ---------- */
.cards { display: grid; gap: 1rem; }
.card {
  display: block;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1.1rem 1.25rem;
  background: color-mix(in srgb, var(--surface) 55%, transparent);
  transition: border-color 0.18s ease, transform 0.18s ease;
}
a.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card .ctitle {
  font-family: var(--f-display);
  font-weight: 500;
  font-size: 1.08rem;
  margin: 0 0 0.3rem;
}
.card .kind {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.5rem;
}
.card p { margin: 0; color: var(--muted); font-size: 0.98rem; }

/* ---------- elsewhere / contact ---------- */
.links { display: flex; flex-wrap: wrap; gap: 0.6rem 0.6rem; margin: 0; padding: 0; list-style: none; }
.links a {
  font-family: var(--f-mono);
  font-size: 0.82rem;
  color: var(--text);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.4rem 0.8rem;
}
.links a:hover { border-color: var(--accent); color: var(--accent-ink); }

footer {
  border-top: 1px solid var(--line);
  margin-top: 2rem;
  padding: 2rem 0 3rem;
  font-family: var(--f-mono);
  font-size: 0.75rem;
  color: var(--muted);
}

/* ---------- easter-egg link hotspot (invisible; the connecting lines are
   themselves clickable hyperlinks, guarded against real links) ---------- */
#egg {
  position: fixed;
  z-index: 40;
  display: none;
  width: 20px;
  height: 20px;
  transform: translate(-50%, -50%);
  cursor: pointer;
  background: none;
}

/* ---------- reveal-on-scroll ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 560px) {
  .pub, .timeline li { grid-template-columns: 1fr; gap: 0.2rem; }
  .pub .yr { padding-top: 0; }
}

/* ---------- accessibility ---------- */
a:focus-visible, button:focus-visible, .chip:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 3px;
}

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