/* Presentation layer for the concise research website.
   Keeps the information architecture compact while restoring visual depth. */

:root {
  --showcase-blue: #3d6fb6;
  --showcase-blue-dark: #244f86;
  --showcase-purple: #756bb1;
  --showcase-teal: #168c7e;
  --showcase-ink: #172b4d;
  --showcase-soft-blue: #edf4fc;
  --showcase-soft-purple: #f2effa;
  --showcase-shadow: 0 24px 64px -34px rgba(23, 43, 77, 0.48);
  --showcase-shadow-soft: 0 14px 34px -24px rgba(23, 43, 77, 0.42);
}

.md-header {
  background: linear-gradient(100deg, #132844 0%, #1d3e68 58%, #284f7f 100%);
  box-shadow: 0 10px 30px -24px rgba(4, 17, 36, 0.9);
}

.md-tabs {
  background: linear-gradient(100deg, #132844 0%, #1d3e68 58%, #284f7f 100%);
}

.md-main {
  background:
    radial-gradient(circle at 7% 5%, rgba(61, 111, 182, 0.08), transparent 25rem),
    radial-gradient(circle at 94% 14%, rgba(117, 107, 177, 0.07), transparent 24rem),
    var(--research-bg);
}

.md-typeset .md-button,
.hero-button {
  transition: transform 160ms ease, border-color 160ms ease, color 160ms ease,
    box-shadow 160ms ease, background 160ms ease;
}

.md-typeset .md-button:is(:hover, :focus-visible),
.hero-button:is(:hover, :focus-visible) {
  transform: translateY(-2px);
  box-shadow: var(--showcase-shadow-soft);
}

.md-typeset .md-button--primary,
.hero-button.primary {
  border-color: transparent;
  background: linear-gradient(135deg, var(--showcase-blue-dark), var(--showcase-blue));
  box-shadow: 0 12px 26px -18px rgba(36, 79, 134, 0.95);
}

.hero-button.github-button {
  border-color: #24292f;
  color: #ffffff;
  background: #24292f;
}

.hero-button.github-button:is(:hover, :focus-visible) {
  border-color: #24292f;
  color: #ffffff;
  background: #11161c;
}

.hero-button svg,
.demo-action svg {
  width: 1rem;
  height: 1rem;
  flex: 0 0 auto;
}

/* Homepage hero */
.home-hero.showcase-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.13fr) minmax(21rem, 0.87fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  overflow: hidden;
  max-width: none;
  min-height: 34rem;
  margin: 0.8rem 0 3.5rem;
  padding: clamp(2.1rem, 5vw, 4.4rem);
  border: 1px solid rgba(61, 111, 182, 0.18);
  border-radius: 1.35rem;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(237, 244, 252, 0.9) 56%, rgba(242, 239, 250, 0.88));
  box-shadow: var(--showcase-shadow);
  isolation: isolate;
}

.home-hero.showcase-hero::before,
.home-hero.showcase-hero::after {
  position: absolute;
  z-index: -1;
  width: 20rem;
  height: 20rem;
  border-radius: 50%;
  filter: blur(1px);
  opacity: 0.6;
  content: "";
  pointer-events: none;
}

.home-hero.showcase-hero::before {
  top: -12rem;
  right: -8rem;
  background: radial-gradient(circle, rgba(61, 111, 182, 0.22), transparent 68%);
}

.home-hero.showcase-hero::after {
  bottom: -13rem;
  left: 32%;
  background: radial-gradient(circle, rgba(117, 107, 177, 0.18), transparent 68%);
}

.showcase-hero .hero-copy,
.showcase-hero .hero-visual {
  position: relative;
  z-index: 1;
}

.showcase-hero .hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  width: fit-content;
  padding: 0.42rem 0.72rem;
  border: 1px solid rgba(61, 111, 182, 0.2);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
}

.showcase-hero .hero-kicker::before {
  width: 0.52rem;
  height: 0.52rem;
  border-radius: 50%;
  background: var(--showcase-teal);
  box-shadow: 0 0 0 0.25rem rgba(22, 140, 126, 0.12);
  content: "";
}

.showcase-hero h1.paper-title {
  max-width: 23ch;
  font-size: clamp(2.2rem, 4.6vw, 3.95rem);
  line-height: 1.055;
  letter-spacing: -0.046em;
}

.showcase-hero .title-accent {
  color: var(--showcase-blue-dark);
}

.showcase-hero .hero-lead {
  max-width: 45rem;
  margin: 1.25rem 0 1.55rem;
  font-size: clamp(0.98rem, 1.4vw, 1.1rem);
}

.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1.3rem;
}

.hero-proof span {
  padding: 0.38rem 0.68rem;
  border: 1px solid rgba(61, 111, 182, 0.15);
  border-radius: 999px;
  color: var(--research-muted);
  background: rgba(255, 255, 255, 0.65);
  font-size: 0.68rem;
  font-weight: 700;
}

/* Compact scientific visual used in the hero. */
.hero-system-card {
  position: relative;
  padding: 1rem;
  border: 1px solid rgba(61, 111, 182, 0.18);
  border-radius: 1.1rem;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 22px 48px -32px rgba(23, 43, 77, 0.62);
  transform: rotate(1deg);
}

.hero-system-card::before {
  position: absolute;
  inset: 0.55rem -0.55rem -0.55rem 0.55rem;
  z-index: -1;
  border: 1px solid rgba(117, 107, 177, 0.16);
  border-radius: 1.1rem;
  background: rgba(242, 239, 250, 0.72);
  content: "";
}

.system-card-header,
.system-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--research-muted);
  font-size: 0.64rem;
  font-weight: 800;
  letter-spacing: 0.055em;
  text-transform: uppercase;
}

.system-card-header span:first-child {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  color: var(--showcase-teal);
}

.system-card-header span:first-child::before {
  width: 0.48rem;
  height: 0.48rem;
  border-radius: 50%;
  background: var(--showcase-teal);
  box-shadow: 0 0 0 0.22rem rgba(22, 140, 126, 0.12);
  content: "";
}

.hero-wave {
  display: block;
  width: 100%;
  margin: 0.85rem 0 0.7rem;
  border: 1px solid #e5ebf2;
  border-radius: 0.8rem;
  background: #fbfcfe;
}

.hero-model-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr)) 1.25fr 1.25fr;
  gap: 0.35rem;
  align-items: center;
  margin-bottom: 0.75rem;
}

.hero-model-row span,
.hero-model-row strong {
  padding: 0.48rem 0.3rem;
  border-radius: 0.45rem;
  text-align: center;
  font-size: 0.62rem;
}

.hero-model-row span {
  border: 1px solid #dce6f1;
  color: var(--showcase-blue-dark);
  background: var(--showcase-soft-blue);
}

.hero-model-row strong {
  color: #ffffff;
  background: linear-gradient(135deg, var(--showcase-blue), var(--showcase-purple));
}

.hero-record-list {
  display: grid;
  gap: 0.42rem;
}

.hero-record-list div {
  display: grid;
  grid-template-columns: 6.2rem 1fr;
  gap: 0.65rem;
  align-items: center;
  padding: 0.55rem 0.65rem;
  border: 1px solid #e0e7ef;
  border-radius: 0.52rem;
  background: #ffffff;
}

.hero-record-list time {
  color: var(--showcase-blue);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.62rem;
  font-weight: 700;
}

.hero-record-list strong {
  color: var(--showcase-ink);
  font-size: 0.7rem;
}

.system-card-footer {
  margin-top: 0.75rem;
}

/* Homepage content rhythm */
.home-section {
  margin: 3.5rem 0;
}

.home-section > h2 {
  margin-top: 0;
  border-bottom: 0;
  font-size: clamp(1.6rem, 2.8vw, 2.15rem);
}

.home-section .section-intro {
  max-width: 51rem;
  color: var(--research-muted);
  font-size: 0.94rem;
}

.home-section .pipeline-frame img {
  width: 100%;
  min-width: 0;
  height: auto;
}

.record-transform.showcase-transform {
  justify-content: center;
  padding: 1.2rem;
  border-color: rgba(61, 111, 182, 0.18);
  background: linear-gradient(135deg, var(--research-surface), var(--showcase-soft-blue));
  box-shadow: var(--showcase-shadow-soft);
}

.method-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 1.25rem 0 1.7rem;
}

.method-point {
  position: relative;
  padding: 1.05rem;
  border: 1px solid var(--research-border);
  border-radius: 0.72rem;
  background: var(--research-surface);
  box-shadow: var(--showcase-shadow-soft);
}

.method-point span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.9rem;
  height: 1.9rem;
  margin-bottom: 0.75rem;
  border-radius: 0.55rem;
  color: #ffffff;
  background: linear-gradient(135deg, var(--showcase-blue), var(--showcase-purple));
  font-size: 0.68rem;
  font-weight: 800;
}

.method-point h3 {
  margin: 0 0 0.35rem;
}

.method-point p {
  margin: 0;
  color: var(--research-muted);
  font-size: 0.78rem;
}

.metric-strip.showcase-metrics .metric {
  border-color: rgba(61, 111, 182, 0.16);
  box-shadow: var(--showcase-shadow-soft);
}

.metric-strip.showcase-metrics .metric strong {
  color: var(--showcase-blue-dark);
  font-size: 1.55rem;
}

.evidence-summary {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 1rem;
  align-items: stretch;
}

.evidence-highlight,
.evidence-scope {
  padding: 1.15rem;
  border: 1px solid var(--research-border);
  border-radius: 0.72rem;
  background: var(--research-surface);
}

.evidence-highlight {
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
  background: linear-gradient(145deg, var(--showcase-soft-blue), var(--showcase-soft-purple));
}

.evidence-highlight strong {
  color: var(--showcase-blue-dark);
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1;
}

.evidence-highlight span {
  margin-top: 0.55rem;
  color: var(--research-muted);
  font-size: 0.72rem;
  font-weight: 700;
}

.evidence-scope h3 {
  margin-top: 0;
}

.evidence-scope p:last-child {
  margin-bottom: 0;
}

/* Dedicated demo showcase on the homepage. */
.demo-showcase {
  display: grid;
  grid-template-columns: minmax(0, 1.28fr) minmax(18rem, 0.72fr);
  gap: clamp(1.25rem, 3vw, 2.3rem);
  align-items: center;
  padding: clamp(1rem, 2vw, 1.35rem);
  border: 1px solid rgba(61, 111, 182, 0.2);
  border-radius: 1rem;
  background: linear-gradient(135deg, var(--research-surface), var(--showcase-soft-blue));
  box-shadow: var(--showcase-shadow);
}

.demo-showcase__media {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--research-border);
  border-radius: 0.8rem;
  background: #ffffff;
  box-shadow: var(--showcase-shadow-soft);
}

.demo-showcase__media img {
  display: block;
  width: 100%;
  height: auto;
  transition: transform 220ms ease;
}

.demo-showcase__media:hover img {
  transform: scale(1.015);
}

.demo-showcase__media span {
  position: absolute;
  right: 0.8rem;
  bottom: 0.8rem;
  padding: 0.46rem 0.7rem;
  border-radius: 999px;
  color: #ffffff;
  background: rgba(23, 43, 77, 0.9);
  backdrop-filter: blur(8px);
  font-size: 0.66rem;
  font-weight: 800;
}

.demo-showcase__copy .hero-kicker {
  margin-bottom: 0.75rem;
}

.demo-showcase__copy h3 {
  margin: 0 0 0.7rem;
  font-size: clamp(1.3rem, 2.5vw, 1.85rem);
}

.demo-showcase__copy p,
.demo-showcase__copy li {
  color: var(--research-muted);
}

.demo-showcase__copy ul {
  margin: 0.8rem 0 1.1rem;
  padding-left: 1.15rem;
}

.demo-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.demo-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 2.5rem;
  padding: 0.6rem 0.85rem;
  border: 1px solid var(--research-border);
  border-radius: 0.55rem;
  color: var(--research-text);
  background: var(--research-surface);
  font-size: 0.7rem;
  font-weight: 800;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.demo-action.primary {
  border-color: transparent;
  color: #ffffff;
  background: linear-gradient(135deg, var(--showcase-blue-dark), var(--showcase-blue));
}

.demo-action.github {
  border-color: #24292f;
  color: #ffffff;
  background: #24292f;
}

.demo-action:is(:hover, :focus-visible) {
  transform: translateY(-2px);
  box-shadow: var(--showcase-shadow-soft);
}

.resource-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
}

.resource-card {
  display: block;
  min-height: 9.5rem;
  padding: 1rem;
  border: 1px solid var(--research-border);
  border-radius: 0.72rem;
  color: var(--research-text);
  background: var(--research-surface);
  box-shadow: var(--showcase-shadow-soft);
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.resource-card:hover {
  border-color: var(--showcase-blue);
  transform: translateY(-3px);
  box-shadow: var(--showcase-shadow);
}

.resource-card span {
  color: var(--showcase-blue);
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.resource-card h3 {
  margin: 0.55rem 0 0.35rem;
}

.resource-card p {
  margin: 0;
  color: var(--research-muted);
  font-size: 0.75rem;
}

/* Demo documentation page. */
.demo-page-hero {
  display: grid;
  grid-template-columns: minmax(18rem, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(1.4rem, 4vw, 3rem);
  align-items: center;
  margin: 0.8rem 0 2.5rem;
  padding: clamp(1.4rem, 3vw, 2.25rem);
  border: 1px solid rgba(61, 111, 182, 0.2);
  border-radius: 1rem;
  background: linear-gradient(135deg, var(--research-surface), var(--showcase-soft-blue));
  box-shadow: var(--showcase-shadow);
}

.demo-page-hero h1 {
  margin: 0 0 0.8rem;
  font-size: clamp(1.9rem, 3.8vw, 3rem);
}

.demo-page-hero p {
  color: var(--research-muted);
}

.demo-page-image {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--research-border);
  border-radius: 0.85rem;
  background: #ffffff;
  box-shadow: var(--showcase-shadow-soft);
}

.demo-page-image img {
  display: block;
  width: 100%;
  height: auto;
}

.demo-page-image span {
  position: absolute;
  right: 0.75rem;
  bottom: 0.75rem;
  padding: 0.42rem 0.65rem;
  border-radius: 999px;
  color: #ffffff;
  background: rgba(23, 43, 77, 0.88);
  font-size: 0.62rem;
  font-weight: 800;
}

.demo-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 1rem 0 1.1rem;
}

.demo-facts span {
  padding: 0.35rem 0.58rem;
  border: 1px solid rgba(61, 111, 182, 0.15);
  border-radius: 999px;
  color: var(--research-muted);
  background: rgba(255, 255, 255, 0.68);
  font-size: 0.63rem;
  font-weight: 700;
}

[data-md-color-scheme="slate"] .home-hero.showcase-hero,
[data-md-color-scheme="slate"] .demo-showcase,
[data-md-color-scheme="slate"] .demo-page-hero {
  background: linear-gradient(135deg, rgba(23, 33, 49, 0.98), rgba(29, 42, 61, 0.96));
}

[data-md-color-scheme="slate"] .showcase-hero .hero-kicker,
[data-md-color-scheme="slate"] .hero-proof span,
[data-md-color-scheme="slate"] .demo-facts span {
  background: rgba(23, 33, 49, 0.72);
}

[data-md-color-scheme="slate"] .showcase-hero .title-accent,
[data-md-color-scheme="slate"] .metric-strip.showcase-metrics .metric strong,
[data-md-color-scheme="slate"] .evidence-highlight strong {
  color: #8fb7e5;
}

[data-md-color-scheme="slate"] .hero-system-card,
[data-md-color-scheme="slate"] .hero-record-list div {
  background: #172131;
}

[data-md-color-scheme="slate"] .hero-wave {
  border-color: #344258;
  background: #121c2a;
}

[data-md-color-scheme="slate"] .hero-record-list strong {
  color: #edf3f8;
}

[data-md-color-scheme="slate"] .evidence-highlight {
  background: linear-gradient(145deg, rgba(40, 74, 115, 0.28), rgba(117, 107, 177, 0.2));
}

@media screen and (max-width: 62rem) {
  .home-hero.showcase-hero,
  .demo-page-hero {
    grid-template-columns: 1fr;
  }

  .showcase-hero .hero-copy {
    max-width: 50rem;
  }

  .hero-system-card {
    max-width: 42rem;
    transform: none;
  }

  .demo-showcase {
    grid-template-columns: 1fr;
  }

  .resource-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media screen and (max-width: 46rem) {
  .home-hero.showcase-hero {
    min-height: auto;
    padding: 1.45rem;
    border-radius: 0.9rem;
  }

  .showcase-hero h1.paper-title {
    font-size: clamp(1.8rem, 9vw, 2.55rem);
  }

  .method-points,
  .evidence-summary,
  .resource-grid {
    grid-template-columns: 1fr;
  }

  .hero-model-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .hero-model-row strong {
    grid-column: span 1;
  }

  .hero-record-list div {
    grid-template-columns: 1fr;
    gap: 0.15rem;
  }

  .demo-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .demo-action {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .md-typeset .md-button,
  .hero-button,
  .demo-action,
  .resource-card,
  .demo-showcase__media img {
    transition: none;
  }
}