/* The landing page and its 404 page. The carousel is styled in showcase.css. */

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

.hero {
  background:
    radial-gradient(ellipse 50% 40% at 85% 0%, color-mix(in srgb, var(--principal) 11%, transparent), transparent 70%),
    radial-gradient(ellipse 40% 35% at 10% 35%, color-mix(in srgb, var(--derived) 8%, transparent), transparent 70%),
    var(--bg);
}

.hero {
  position: relative;
  padding: 52px 0 28px;
  overflow: hidden;
  text-align: center;
}

/* A faint dot grid behind the headline. */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(var(--line-strong) 1px, transparent 1px);
  background-size: 20px 20px;
  opacity: 0.5;
  -webkit-mask-image: linear-gradient(to bottom, #000, transparent 85%);
  mask-image: linear-gradient(to bottom, #000, transparent 85%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  max-width: 860px;
}

.hero h1 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(36px, 4.8vw, 56px);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -0.025em;
}

.hero-accent {
  background: linear-gradient(95deg, var(--principal) 10%, var(--derived) 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lede {
  max-width: 62ch;
  margin: 0 auto 20px;
  color: var(--ink-2);
  font-size: 17.5px;
  line-height: 1.6;
}

.hero .actions { justify-content: center; }

@media (max-width: 640px) {
  .hero { padding: 36px 0 20px; }
  .hero h1 .hero-accent { display: block; }
}

/* ---------- Bands ---------- */

.band {
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
}

.free > .band:nth-of-type(odd) { background: var(--bg-sunken); }

.band-head {
  max-width: 760px;
  margin-bottom: 24px;
}

.band-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(25px, 3vw, 34px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.band-body > * + * { margin-top: 16px; }

/* A subheading within a band, above a group of cards; the first one sits right under the title. */
.band-subhead {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.band-body > * + .band-subhead { margin-top: 32px; }
.band-body > .band-subhead + * { margin-top: 10px; }

.band-body p,
.band-body li {
  color: var(--ink-2);
  font-size: 16px;
  line-height: 1.65;
}

.split-col > ul {
  padding-left: 1.2em;
  list-style: disc;
}

.split-col > ul > li { margin: 6px 0; }
.split-col > ul > li::marker { color: var(--accent); }
.band-body li > p { margin: 0; }

.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
  gap: 32px;
}

/* Text on the left, a wider column of code on the right. */
.split.code-right { grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 28px; }
.split.code-left { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 28px; }

.band-body code.hl.lean.block,
.band-body pre { font-size: 13px; }

/* Steps laid out in a row under a full-width code block. */
.steps.row ol { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

.split-col { min-width: 0; }
.split-col > * + * { margin-top: 12px; }

@media (max-width: 900px) {
  .band { padding: 40px 0; }
  .split,
  .split.code-right,
  .split.code-left { grid-template-columns: minmax(0, 1fr); gap: 28px; }
}

#next .band-head { margin-bottom: 16px; }

/* ---------- Steps and features ---------- */

.steps ol {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.steps li {
  position: relative;
  padding: 14px 16px 14px 58px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-raised);
  counter-increment: step;
}

.steps li::before {
  content: counter(step);
  position: absolute;
  top: 13px;
  left: 16px;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: var(--accent-ink);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
}

.band-body .steps li p { font-size: 15.5px; line-height: 1.6; }

.features ul {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.features li {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-raised);
}

.band-body .features li p { font-size: 15.5px; line-height: 1.65; }

.features li strong {
  display: block;
  margin-bottom: 4px;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
}

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

/* ---------- 404 ---------- */

.not-found {
  padding: 80px 24px 96px;
  text-align: center;
}

.not-found h1 {
  max-width: 18ch;
  margin: 0 auto 16px;
  font-family: var(--font-display);
  font-size: clamp(32px, 4.6vw, 54px);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.not-found p:not(.kicker) {
  margin: 0 0 32px;
  color: var(--ink-2);
  font-size: 18px;
}

.not-found .actions { justify-content: center; }

/* ---------- BibTeX entries ---------- */

.bibtex summary {
  width: max-content;
  color: var(--ink-2);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

.bibtex summary:hover { color: var(--ink); }
.bibtex pre { margin-top: 12px; font-size: 12.5px; white-space: pre-wrap; }


/* ---------- Publications ---------- */

.pub-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.pub {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-raised);
}

.band-body .pub p { margin: 0; }
.band-body .pub > * + * { margin-top: 6px; }

.band-body .pub .pub-venue {
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
}

.pub-title {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.3;
}

.pub-title a { color: var(--ink); }
.pub-title a:hover { color: var(--accent); }

.band-body .pub .pub-authors { font-size: 15px; }
.band-body .pub .actions { margin-top: 12px; }
.pub .bibtex { margin-top: 12px; }

/* A page with a single section, like Publications: the section fills the window down to the footer. */
#content:has(> main.free > .band:only-child) { display: flex; flex-direction: column; }
main.free:has(> .band:only-child) { display: flex; flex: 1; flex-direction: column; }
.free > .band:only-child { flex: 1; border-bottom: 0; }