/* Style guide — standalone reference surface (scoped .sg-*) */

.sg {
  --sg-line: var(--line);
  --sg-muted: var(--fg);
  padding: calc(var(--header-h) + clamp(2rem, 5vw, 3.5rem)) 0 clamp(4rem, 12vw, 6rem);
  color: var(--fg);
}

.sg code {
  font-family: var(--font);
  font-size: var(--text-base);
  font-weight: inherit;
  letter-spacing: 0;
  color: var(--sg-muted);
}

.sg__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2.5rem, 6vw, 4rem);
  max-width: 72rem;
  margin: 0 auto;
  box-sizing: border-box;
}

@media (min-width: 960px) {
  .sg__grid {
    grid-template-columns: minmax(12rem, 14rem) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: start;
  }
}

/* —— Intro —— */
.sg-head {
  grid-column: 1 / -1;
  padding-bottom: clamp(1.5rem, 4vw, 2.5rem);
  border-bottom: 1px solid var(--sg-line);
}

.sg-eyebrow {
  margin: 0 0 0.85rem;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: var(--weight, 300);
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--sg-muted);
}

.sg-title {
  margin: 0 0 1rem;
  font-family: var(--font);
  font-size: var(--text-base);
  font-weight: var(--weight, 300);
  line-height: 1.08;
  letter-spacing: 0.02em;
  text-wrap: balance;
}

.sg-lede {
  margin: 0;
  max-width: 38rem;
  font-size: var(--text-lede);
  line-height: 1.7;
  color: var(--sg-muted);
}

/* —— Sticky TOC —— */
.sg-toc {
  position: sticky;
  top: calc(var(--header-h) + 1rem);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0;
  margin: 0;
  list-style: none;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.sg-toc a {
  display: block;
  padding: 0.35rem 0;
  border-bottom: none;
  color: var(--sg-muted);
  transition: color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}

.sg-toc a:hover,
.sg-toc a:focus-visible {
  color: var(--fg);
  opacity: 1;
}

.sg-toc a:focus-visible {
  outline: var(--focus-ring);
  outline-offset: 2px;
  border-radius: 2px;
}

.sg-toc a[aria-current="page"] {
  color: var(--fg);
}

@media (max-width: 959px) {
  .sg-toc {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--sg-line);
  }
}

/* —— Sections —— */
.sg-main {
  display: flex;
  flex-direction: column;
  gap: clamp(3rem, 8vw, 5rem);
  min-width: 0;
}

.sg-section {
  scroll-margin-top: calc(var(--header-h) + 0.75rem);
}

.sg-section__label {
  margin: 0 0 1.25rem;
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: var(--weight, 300);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--sg-muted);
}

.sg-section__label::before {
  content: "";
  width: 2rem;
  height: 1px;
  background: var(--fg);
  flex-shrink: 0;
}

.sg-section__title {
  margin: 0 0 1.5rem;
  font-family: var(--font);
  font-size: var(--text-xl);
  font-weight: var(--weight, 300);
  letter-spacing: 0.02em;
}

/* —— Type ramp —— */
.sg-type {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--sg-line);
}

.sg-type__row {
  display: grid;
  grid-template-columns: minmax(5.5rem, 7rem) 1fr;
  gap: 1rem 1.5rem;
  align-items: baseline;
  padding: 1rem 0;
  border-bottom: 1px solid var(--sg-line);
}

@media (max-width: 520px) {
  .sg-type__row {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }
}

.sg-type__meta {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--sg-muted);
}

.sg-type__sample {
  margin: 0;
  font-family: var(--font);
  font-weight: var(--weight, 300);
  color: var(--fg);
  line-height: 1.3;
}

.sg-type__sample--hero {
  font-size: var(--text-hero);
}

.sg-type__sample--2xl {
  font-size: var(--text-2xl);
}

.sg-type__sample--xl {
  font-size: var(--text-xl);
}

.sg-type__sample--lg {
  font-size: var(--text-lg);
}

.sg-type__sample--base {
  font-size: var(--text-base);
  line-height: 1.65;
}

.sg-type__sample--lede {
  font-size: var(--text-lede);
  line-height: 1.65;
}

.sg-type__sample--ui {
  font-family: var(--font-sans);
  font-size: var(--text-ui);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.sg-type__sample--xs {
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* —— Color —— */
.sg-swatches {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(7.5rem, 1fr));
  gap: var(--gap-v) var(--gap-h);
}

.sg-swatch {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.sg-swatch__chip {
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  border: 1px solid var(--sg-line);
  box-shadow: inset 0 0 0 1px var(--line);
}

.sg-swatch__chip--fg {
  background: var(--fg);
}

.sg-swatch__chip--bg {
  background: var(--bg);
}

.sg-swatch__chip--surface {
  background: var(--surface);
}

.sg-swatch__chip--elevated {
  background: var(--elevated);
}

.sg-swatch__chip--paper {
  background: var(--paper);
}

.sg-swatch__chip--line {
  background: transparent;
  border-color: var(--line);
}

.sg-swatch figcaption {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--sg-muted);
}

.sg-swatch strong {
  display: block;
  font-weight: var(--weight, 300);
  color: var(--fg);
  letter-spacing: 0.04em;
}

/* —— Space —— */
.sg-space {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.sg-space__row {
  display: grid;
  grid-template-columns: 7rem 1fr 4rem;
  gap: 1rem;
  align-items: center;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--sg-muted);
}

@media (max-width: 520px) {
  .sg-space__row {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }
}

.sg-space__bar {
  height: 0.5rem;
  background: var(--fg);
  border-radius: 1px;
  min-width: 0;
}

.sg-space__bar--pad-x {
  width: var(--pad-x);
  max-width: 100%;
}

.sg-space__bar--section {
  width: min(100%, 6rem);
}

.sg-space__bar--col {
  width: 0.5rem;
}

.sg-space__bar--v {
  width: 2.5rem;
}

/* —— UI —— */
.sg-ui {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--gap-col) var(--gap-h);
}

.sg-ui__stack {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
}

.sg-link-demo {
  font-family: var(--font);
  font-size: var(--text-lede);
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.12em;
}

.sg-link-demo:hover {
  opacity: 1;
}

.sg-link-demo:focus-visible {
  outline: var(--focus-ring);
  outline-offset: 3px;
  opacity: 1;
}

.sg-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1rem;
  font-family: var(--font-sans);
  font-size: var(--text-ui);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--elevated);
  color: var(--fg);
  cursor: default;
}

.sg-pill--solid {
  background: var(--fg);
  color: var(--bg);
  border-color: var(--fg);
}

/* —— Photography —— */
.sg-strip {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap-v) var(--gap-h);
}

@media (min-width: 640px) {
  .sg-strip {
    grid-template-columns: repeat(3, 1fr);
  }
}

.sg-strip__fig {
  margin: 0;
  position: relative;
  background: var(--surface);
  border-radius: 0;
  overflow: hidden;
  aspect-ratio: 3 / 4;
}

.sg-strip__fig img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sg-strip__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  margin: 0;
  padding: 0.6rem 0.75rem;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg);
  background: var(--paper);
}

.sg-footnote {
  margin: 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--sg-line);
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  line-height: 1.55;
  letter-spacing: 0.04em;
  color: var(--sg-muted);
  max-width: 36rem;
}