/* ==========================================================================
   Anime Upscaling — site styles
   Palette and vocabulary are inherited from the dashboard UI (apps/web):
   pure black canvas, zinc hairlines, monospace chips, and four operation
   colors that encode job type. Color is meaning here, never decoration.
   ========================================================================== */

:root {
  --bg: #000000;
  --surface: #0b0b0c;
  --surface-2: #131316;
  --line: #27272a;
  --line-soft: #1a1a1d;

  --text: #fafafa;
  --muted: #a1a1aa;
  --dim: #71717a;

  /* Operation colors — mirrored from the pipeline editor */
  --upscale: #60a5fa;
  --interpolate: #c084fc;
  --optimize: #4ade80;
  --integrity: #f87171;

  --radius: 10px;
  --radius-sm: 6px;

  --font-display: "Archivo", ui-sans-serif, system-ui, sans-serif;
  --font-sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, Menlo, monospace;

  --col: min(1160px, 100% - 3rem);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

img {
  max-width: 100%;
  height: auto;
}

:focus-visible {
  outline: 2px solid var(--upscale);
  outline-offset: 3px;
  border-radius: 3px;
}

.wrap {
  width: var(--col);
  margin-inline: auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--surface-2);
  border: 1px solid var(--line);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

/* --------------------------------------------------------------- masthead */

.masthead {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-soft);
}

.masthead__inner {
  width: var(--col);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  height: 60px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  margin-right: auto;
}

.brand img {
  width: 30px;
  height: 30px;
  object-fit: contain;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.brand__sub {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--dim);
  letter-spacing: 0.04em;
  line-height: 1.2;
}

.masthead nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.masthead nav a {
  font-size: 0.875rem;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s;
}

.masthead nav a:hover {
  color: var(--text);
}

/* On narrow screens the masthead keeps only the brand and the two links that
   lead somewhere else — everything on this page is reachable by scrolling. */
@media (max-width: 640px) {
  .brand__sub {
    display: none;
  }
  .brand img {
    width: 26px;
    height: 26px;
  }
  .brand__name {
    font-size: 0.85rem;
  }
  .masthead__inner {
    gap: 0.75rem;
  }
  .masthead nav {
    gap: 0.9rem;
  }
  .masthead nav a {
    white-space: nowrap;
  }
  .masthead nav a.is-secondary {
    display: none;
  }
}

/* ------------------------------------------------------------------- hero */

.hero {
  padding: clamp(3rem, 8vw, 6rem) 0 clamp(3rem, 6vw, 5rem);
  border-bottom: 1px solid var(--line-soft);
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 420px);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

@media (max-width: 900px) {
  .hero__grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dim);
  margin: 0 0 1.25rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-stretch: 112%;
  font-size: clamp(2.5rem, 6.5vw, 4.25rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
  margin: 0 0 1.5rem;
  text-transform: uppercase;
}

.hero h1 em {
  font-style: normal;
  color: var(--dim);
}

.hero__lede {
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  color: var(--muted);
  max-width: 46ch;
  margin: 0 0 2rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.15rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--surface-2);
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition:
    border-color 0.15s,
    background 0.15s;
}

.btn:hover {
  border-color: #3f3f46;
  background: #1a1a1d;
}

.btn--primary {
  background: var(--text);
  color: #000;
  border-color: var(--text);
}

.btn--primary:hover {
  background: #d4d4d8;
  border-color: #d4d4d8;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--dim);
}

/* ----------------------------------------------- signature: live pipeline */

.rig {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 1rem;
  display: grid;
  gap: 0.5rem;
}

.rig__bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0 0.25rem 0.75rem;
  border-bottom: 1px solid var(--line-soft);
  margin-bottom: 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--dim);
}

.rig__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--optimize);
}

.rig__replay {
  margin-left: auto;
  background: none;
  border: 1px solid var(--line);
  color: var(--dim);
  border-radius: 5px;
  padding: 0.2rem 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  cursor: pointer;
  transition:
    color 0.15s,
    border-color 0.15s;
}

.rig__replay:hover {
  color: var(--text);
  border-color: #3f3f46;
}

.spec {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  padding: 0.7rem 0.85rem;
  background: var(--bg);
}

.spec__label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  color: var(--dim);
  text-transform: uppercase;
}

.spec__value {
  font-family: var(--font-mono);
  font-size: 1rem;
  margin-top: 0.15rem;
}

.spec__value b {
  font-weight: 500;
  transition: color 0.35s;
}

/* Each output value takes the color of the operation that changed it. */
.spec--out .spec__value b.is-lifted.is-res {
  color: var(--upscale);
}

.spec--out .spec__value b.is-lifted.is-fps {
  color: var(--interpolate);
}

.spec--out .spec__value b.is-lifted.is-codec {
  color: var(--optimize);
}

.rig__arrow {
  text-align: center;
  color: #3f3f46;
  font-size: 0.8rem;
  line-height: 1;
}

.step {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  padding: 0.7rem 0.85rem;
  background: var(--bg);
  opacity: 0.35;
  transition:
    opacity 0.45s ease,
    border-color 0.45s ease,
    transform 0.45s ease;
  transform: translateY(3px);
}

.step.is-live {
  opacity: 1;
  transform: none;
  border-color: color-mix(in srgb, var(--op) 45%, var(--line));
}

.step__head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.step__idx {
  width: 18px;
  height: 18px;
  flex: none;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  background: color-mix(in srgb, var(--op) 18%, transparent);
  color: var(--op);
}

.step__name {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--op);
}

.step__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: 0.55rem;
}

.chip {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--muted);
  border: 1px solid var(--line-soft);
  background: var(--surface-2);
  border-radius: 4px;
  padding: 0.1rem 0.4rem;
}

/* --------------------------------------------------------------- sections */

.band {
  padding: clamp(3.5rem, 7vw, 5.5rem) 0;
  border-bottom: 1px solid var(--line-soft);
}

.band__head {
  max-width: 60ch;
  margin-bottom: 2.5rem;
}

.band__head h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-stretch: 108%;
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0.5rem 0 0.75rem;
  text-transform: uppercase;
}

.band__head p {
  color: var(--muted);
  margin: 0;
}

/* operations */

.ops {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(230px, 100%), 1fr));
  gap: 1rem;
}

.op {
  border: 1px solid var(--line-soft);
  border-top: 2px solid var(--op);
  border-radius: var(--radius-sm);
  background: var(--surface);
  padding: 1.1rem 1.15rem 1.25rem;
}

.op h3 {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--op);
  margin: 0 0 0.5rem;
}

.op p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

/* feature list */

.feats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(400px, 100%), 1fr));
  gap: 0.25rem 2.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.feats li {
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 0.925rem;
  color: var(--muted);
  display: flex;
  gap: 0.7rem;
}

.feats li::before {
  content: "→";
  color: #3f3f46;
  flex: none;
}

/* shots */

.shots {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
  gap: 1rem;
}

.shot {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--surface);
}

/* The three screenshots have different native aspect ratios; cropping them to
   a common one from the top keeps the row's baseline even. */
.shot img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: top center;
  border-bottom: 1px solid var(--line-soft);
}

.shot figcaption {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--dim);
  padding: 0.6rem 0.75rem;
  letter-spacing: 0.03em;
}

/* models table */

.tablewrap {
  overflow-x: auto;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  min-width: 560px;
}

thead th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dim);
  font-weight: 500;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

tbody td {
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--line-soft);
  color: var(--muted);
  vertical-align: top;
}

tbody tr:last-child td {
  border-bottom: 0;
}

tbody td:first-child {
  color: var(--text);
}

td code,
th code {
  font-family: var(--font-mono);
  font-size: 0.82em;
  color: var(--text);
}

/* code blocks */

.code {
  position: relative;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: var(--surface);
  overflow: hidden;
}

.code__head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.85rem;
  border-bottom: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--dim);
  letter-spacing: 0.05em;
}

.code pre {
  margin: 0;
  padding: 0.95rem 1rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.7;
  color: #e4e4e7;
}

.copy {
  margin-left: auto;
  background: none;
  border: 1px solid var(--line);
  color: var(--dim);
  border-radius: 4px;
  padding: 0.15rem 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  cursor: pointer;
  transition:
    color 0.15s,
    border-color 0.15s;
}

.copy:hover {
  color: var(--text);
  border-color: #3f3f46;
}

.steps-2col {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(320px, 100%), 1fr));
  gap: 1.25rem;
  align-items: start;
}

.note {
  font-size: 0.85rem;
  color: var(--dim);
  margin-top: 1rem;
}

.note strong {
  color: var(--muted);
  font-weight: 500;
}

/* --------------------------------------------------------------- footer */

.foot {
  padding: 3rem 0 4rem;
  font-size: 0.85rem;
  color: var(--dim);
}

.foot__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(200px, 100%), 1fr));
  gap: 2rem;
}

.foot h4 {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dim);
  margin: 0 0 0.85rem;
  font-weight: 500;
}

.foot ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.45rem;
}

.foot a {
  color: var(--muted);
  text-decoration: none;
}

.foot a:hover {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.foot__base {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

/* ============================================================ docs layout */

.docs {
  display: grid;
  grid-template-columns: 232px minmax(0, 1fr);
  gap: 3rem;
  width: var(--col);
  margin-inline: auto;
  align-items: start;
  padding: 2.5rem 0 5rem;
}

.docnav {
  position: sticky;
  top: 84px;
  font-size: 0.875rem;
}

.docnav h4 {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dim);
  margin: 0 0 0.7rem;
  font-weight: 500;
}

.docnav ul {
  list-style: none;
  padding: 0;
  margin: 0 0 1.75rem;
  display: grid;
  gap: 0.1rem;
}

.docnav a {
  display: block;
  padding: 0.3rem 0.65rem;
  border-radius: 5px;
  color: var(--muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition:
    color 0.15s,
    background 0.15s;
}

.docnav a:hover {
  color: var(--text);
  background: var(--surface);
}

.docnav a[aria-current="page"] {
  color: var(--text);
  background: var(--surface-2);
  border-left-color: var(--upscale);
}

@media (max-width: 860px) {
  .docs {
    grid-template-columns: minmax(0, 1fr);
    gap: 1.75rem;
  }
  .docnav {
    position: static;
    border-bottom: 1px solid var(--line-soft);
    padding-bottom: 1rem;
  }
  .docnav ul {
    margin-bottom: 1rem;
    grid-auto-flow: column;
    grid-auto-columns: max-content;
    overflow-x: auto;
    gap: 0.35rem;
    scrollbar-width: thin;
    scrollbar-color: var(--line) transparent;
  }
  .docnav ul::-webkit-scrollbar {
    height: 6px;
  }
  .docnav ul::-webkit-scrollbar-track {
    background: transparent;
  }
  .docnav ul::-webkit-scrollbar-thumb {
    background: var(--line);
    border-radius: 3px;
  }
  .docnav a {
    white-space: nowrap;
    border-left: 0;
    border-bottom: 2px solid transparent;
  }
  .docnav a[aria-current="page"] {
    border-left: 0;
    border-bottom-color: var(--upscale);
  }
}

/* markdown body */

.prose {
  max-width: 74ch;
  min-width: 0;
}

.prose > *:first-child {
  margin-top: 0;
}

.prose h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-stretch: 108%;
  font-size: clamp(1.9rem, 4vw, 2.5rem);
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin: 0 0 1.5rem;
  text-transform: uppercase;
}

.prose h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.4rem;
  letter-spacing: -0.015em;
  margin: 2.75rem 0 0.9rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line-soft);
}

.prose h3 {
  font-size: 1.075rem;
  font-weight: 600;
  margin: 2rem 0 0.7rem;
}

.prose h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin: 1.5rem 0 0.5rem;
  color: var(--muted);
}

.prose p,
.prose li {
  color: var(--muted);
}

.prose p {
  margin: 0 0 1.1rem;
}

.prose ul,
.prose ol {
  margin: 0 0 1.1rem;
  padding-left: 1.3rem;
}

.prose li {
  margin-bottom: 0.4rem;
}

.prose li::marker {
  color: #3f3f46;
}

.prose strong {
  color: var(--text);
  font-weight: 600;
}

.prose a {
  color: var(--upscale);
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--upscale) 35%, transparent);
}

.prose a:hover {
  border-bottom-color: var(--upscale);
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.84em;
  background: var(--surface-2);
  border: 1px solid var(--line-soft);
  border-radius: 4px;
  padding: 0.08em 0.35em;
  color: var(--text);
}

.prose pre {
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  padding: 0.95rem 1rem;
  overflow-x: auto;
  margin: 0 0 1.25rem;
  font-size: 0.82rem;
  line-height: 1.7;
}

.prose pre code {
  background: none;
  border: 0;
  padding: 0;
  font-size: inherit;
  color: #e4e4e7;
}

.prose table {
  margin: 0 0 1.25rem;
  min-width: 0;
}

.prose .tablewrap {
  margin-bottom: 1.25rem;
}

.prose blockquote {
  margin: 0 0 1.25rem;
  padding: 0.25rem 0 0.25rem 1rem;
  border-left: 2px solid var(--line);
  color: var(--dim);
}

.prose hr {
  border: 0;
  border-top: 1px solid var(--line-soft);
  margin: 2rem 0;
}

.prose img {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
}

.doc-foot {
  margin-top: 3.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--dim);
}

.doc-foot a {
  color: var(--muted);
  text-decoration: none;
}

.doc-foot a:hover {
  color: var(--text);
}