/* Paper page: a hero above the field of the paper, then the snapshot, the
   overview and the citation. The title of a paper is long, so the font is
   smaller than in hero.css. */

#paper-field {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  /* A keyframe with a from step only moves to the computed opacity, which
     is less on the mobile canvas. */
  animation: field-in 900ms ease-out;
}

@keyframes field-in {
  from { opacity: 0; }
}

.paper-hero { min-height: calc(80vh - 3.2rem); }
.paper-hero { min-height: calc(80svh - 3.2rem); }

.paper-hero h1 {
  font-size: clamp(1.85rem, 4.2vw, 3.05rem);
  line-height: 1.1;
  letter-spacing: -0.025em;
  max-width: 17em;
  margin: 1rem 0 1.3rem;
}

.paper-authors {
  max-width: 44em;
  font-size: 1.02rem;
  color: var(--muted);
}

.paper-authors .me { color: var(--ink); font-weight: 600; }

.paper-venue {
  margin-top: 0.9rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* One line that names the scene, in the bottom padding of the panel. */
.field-note {
  position: absolute;
  left: 1.5rem;
  right: 1.5rem;
  bottom: 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
  opacity: 0.75;
}

/* Snapshot ------------------------------------------------------------ */

/* The 1px lines are gaps, so an empty cell is a grey block. Each count of
   columns must divide six. */
.snapshot {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.snapshot .fact {
  background: var(--surface);
  padding: 1.3rem 1.4rem 1.4rem;
}

.snapshot .fact-value { overflow-wrap: anywhere; }

.topics {
  margin-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.topic {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.32rem 0.85rem;
}

/* Overview ------------------------------------------------------------ */

.paper-brief {
  max-width: var(--w-prose);
  font-size: clamp(1.12rem, 2.1vw, 1.28rem);
  line-height: 1.55;
}

.paper-brief em { font-style: italic; }

.contributions {
  margin-top: 2.4rem;
  display: grid;
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  list-style: none;
}

.contributions li {
  background: var(--paper);
  padding: 1.25rem 0 1.35rem;
  display: grid;
  grid-template-columns: 3.2rem 1fr;
  align-items: baseline;
  gap: 0.5rem;
}

.contributions .index {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--accent);
}

.contributions p {
  max-width: var(--w-prose);
  color: var(--muted);
  font-size: 0.99rem;
  line-height: 1.62;
}

.abstract-head {
  margin-top: 3rem;
  margin-bottom: 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.paper-abstract {
  max-width: var(--w-prose);
  color: var(--muted);
  line-height: 1.7;
}

.paper-abstract .source {
  display: block;
  margin-top: 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  opacity: 0.8;
}

/* Page foot: a link to the list, and a link to a related paper. */
.paper-nav {
  margin-top: 2.6rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.75rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
}

.paper-nav a {
  color: var(--accent-strong);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: border-color 140ms ease;
}

.paper-nav a:hover, .paper-nav a:focus-visible {
  border-bottom-color: color-mix(in srgb, var(--accent) 45%, transparent);
}

@media (max-width: 860px) {
  .snapshot { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 460px) {
  .snapshot { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 720px) {
  .paper-hero { min-height: 0; }

  /* On a phone the scene is behind the title, so the canvas gets more
     transparent. */
  #paper-field { opacity: 0.45; }

  .paper-hero h1 {
    font-size: clamp(1.6rem, 7.2vw, 2.2rem);
    margin: 0.8rem 0 1.05rem;
  }

  .paper-authors { font-size: 0.96rem; }
  .paper-venue { font-size: 0.71rem; gap: 0.5rem 0.8rem; }

  /* Not enough space in the padding, so the note comes after the links. */
  .field-note {
    position: static;
    margin-top: 1.7rem;
    font-size: 0.62rem;
  }

  .snapshot .fact { padding: 1.1rem 1.15rem 1.2rem; }
  .paper-brief { font-size: 1.06rem; }
  .contributions li { grid-template-columns: 2.4rem 1fr; }
}