:root {
  color-scheme: light;
  --bg: #f5f5f7;
  --ink: #111114;
  --muted: #5f6368;
  --panel: rgba(255, 255, 255, 0.84);
  --panel-strong: #ffffff;
  --line: rgba(17, 17, 20, 0.12);
  --blue: #0071e3;
  --violet: #6e5cff;
  --cyan: #00a7c7;
  --radius: 8px;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(125deg, rgba(0, 113, 227, 0.12), transparent 28rem),
    linear-gradient(220deg, rgba(110, 92, 255, 0.14), transparent 28rem),
    var(--bg);
  color: var(--ink);
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem clamp(1rem, 4vw, 3rem);
  border-bottom: 1px solid var(--line);
  background: rgba(245, 245, 247, 0.82);
  backdrop-filter: blur(18px);
}

.brand,
nav,
.hero-actions,
.viewer-badges,
.research-links,
.status-grid {
  display: flex;
  align-items: center;
}

.brand {
  gap: 0.75rem;
  font-weight: 900;
}

.brand img {
  width: 2.25rem;
  height: 2.25rem;
}

nav {
  gap: clamp(0.75rem, 2vw, 1.5rem);
  color: var(--muted);
  font-size: 0.94rem;
}

nav a:hover,
nav a:focus-visible {
  color: var(--ink);
}

main,
footer {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(22rem, 0.95fr);
  gap: clamp(2rem, 5vw, 4.2rem);
  align-items: center;
  min-height: calc(100vh - 4.2rem);
  padding: clamp(2.5rem, 6vw, 5.5rem) 0;
}

.eyebrow {
  margin: 0 0 0.8rem;
  color: var(--blue);
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1,
h2,
h3 {
  margin: 0;
}

h1 {
  max-width: 11ch;
  font-size: clamp(3.1rem, 8vw, 6.7rem);
  line-height: 0.9;
}

h2 {
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 1;
}

h3 {
  font-size: 1.05rem;
}

.hero-copy > p:not(.eyebrow),
.uploader-panel p,
.research p,
.workflow-grid p,
.disclaimer p {
  color: var(--muted);
  line-height: 1.65;
}

.hero-copy > p:not(.eyebrow) {
  max-width: 46rem;
  font-size: 1.07rem;
}

.hero-actions,
.generate-row {
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.button,
.research-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  border-radius: var(--radius);
  font-weight: 900;
}

.button {
  padding: 0 1.1rem;
}

.button.primary {
  background: var(--ink);
  color: #fff;
}

.button.secondary,
.research-links a {
  border: 1px solid var(--line);
  background: var(--panel);
}

.viewer-shell {
  position: relative;
  min-height: min(72vw, 34rem);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(232, 235, 241, 0.86)),
    #fff;
  box-shadow: 0 30px 90px rgba(17, 17, 20, 0.16);
}

#litoCanvas {
  display: block;
  width: 100%;
  height: 100%;
  min-height: min(72vw, 34rem);
}

.viewer-badges {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  left: 1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.viewer-badges span,
.status-grid span {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  color: #2b2d31;
  font-size: 0.78rem;
  font-weight: 800;
}

.viewer-badges span {
  padding: 0.45rem 0.65rem;
}

.uploader-panel,
.workflow,
.research,
.disclaimer {
  border-top: 1px solid var(--line);
  padding: clamp(2.6rem, 6vw, 4.8rem) 0;
}

.uploader-panel,
.research {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(0, 1fr);
  gap: clamp(1.4rem, 4vw, 3rem);
  align-items: start;
}

.upload-card {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.drop-zone {
  display: grid;
  gap: 0.45rem;
  min-height: 12rem;
  place-items: center;
  padding: 1.4rem;
  border: 1px dashed rgba(0, 113, 227, 0.42);
  border-radius: var(--radius);
  background: rgba(0, 113, 227, 0.05);
  text-align: center;
  cursor: pointer;
}

.drop-zone input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.drop-title {
  font-size: 1.2rem;
  font-weight: 900;
}

.drop-copy {
  max-width: 28rem;
  color: var(--muted);
}

.preview-frame {
  margin-top: 1rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-strong);
}

.preview-frame img {
  display: block;
  width: 100%;
  max-height: 25rem;
  object-fit: contain;
}

.status-grid {
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.status-grid span {
  padding: 0.55rem 0.7rem;
}

.status-grid .active {
  border-color: rgba(0, 113, 227, 0.48);
  background: rgba(0, 113, 227, 0.1);
  color: #003f82;
}

.generate-row {
  display: flex;
  align-items: center;
}

.button[disabled] {
  cursor: not-allowed;
  opacity: 0.48;
}

.job-status {
  margin: 0.85rem 0 0;
  color: var(--muted);
}

.job-status.error {
  color: #b42318;
}

.job-status.success {
  color: #067647;
}

.section-heading {
  max-width: 52rem;
}

.workflow-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 1.5rem;
}

.workflow-grid article {
  min-height: 13rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.workflow-grid strong {
  display: inline-grid;
  width: 2rem;
  height: 2rem;
  margin-bottom: 1rem;
  place-items: center;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
}

.research-links {
  flex-wrap: wrap;
  gap: 0.75rem;
}

.research-links a {
  padding: 0 1rem;
}

.disclaimer {
  padding-top: 1.4rem;
}

.disclaimer p,
footer p {
  margin: 0;
}

footer {
  padding: 1.8rem 0 2.8rem;
  color: var(--muted);
}

@media (max-width: 900px) {
  .hero,
  .uploader-panel,
  .research {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 0;
  }

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

@media (max-width: 620px) {
  .site-header {
    align-items: flex-start;
    padding: 0.85rem 1rem;
  }

  nav {
    gap: 0.65rem;
    font-size: 0.84rem;
  }

  h1 {
    font-size: 3.35rem;
  }

  .workflow-grid {
    grid-template-columns: 1fr;
  }
}