/**
 * Design system page — specimens + links to OSD labs.
 */

@import "../../src/tokens/stage.css";
@import "../gallery/gallery.css";
@import "../books/books.css";

/* Override gallery page chrome padding when embedded */
#page.system-page {
  max-width: 90rem;
  padding: 0;
  padding-bottom: 6rem;
}

.system-page {
  background: var(--bg);
  color: var(--fg);
}

/* Site nav on system page */
.if-site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 18px clamp(16px, 4vw, 48px);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
}
.if-site-nav__brand {
  font-size: 12px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--fg);
  text-decoration: none;
}
.if-site-nav__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}
.if-site-nav__links a {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
}
.if-site-nav__links a:hover {
  color: var(--fg);
}
.if-site-nav__theme {
  font: inherit;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  background: none;
  border: 1px solid var(--line);
  color: var(--fg);
  border-radius: 40px;
  padding: 6px 14px;
  cursor: pointer;
}

.sys-wrap {
  padding: clamp(1.5rem, 4vw, 3rem);
  max-width: 90rem;
  margin: 0 auto;
}

.sys-hero {
  padding: clamp(2rem, 6vh, 4rem) 0 2rem;
  max-width: 40rem;
}
.sys-hero h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2rem, 5vw, 3.25rem);
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0.75rem 0 1rem;
}
.sys-hero p {
  color: var(--muted);
  line-height: 1.6;
  font-size: 1.05rem;
}

.sys-labs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.5rem;
}
.sys-labs a {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--fg);
  border: 1px solid var(--line);
  padding: 0.5rem 0.85rem;
  border-radius: 2px;
}
.sys-labs a:hover {
  border-color: var(--fg);
}

.sys-section {
  border-top: 1px solid var(--line);
  padding: clamp(2.5rem, 6vh, 4rem) 0;
}
.sys-section__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.75rem;
}
.sys-section__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 0.5rem;
  letter-spacing: -0.015em;
}
.sys-section__hint {
  color: var(--muted);
  max-width: 36rem;
  margin-bottom: 1.75rem;
  line-height: 1.55;
  font-size: 0.95rem;
}

/* Color swatches */
.sys-swatches {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(7.5rem, 1fr));
  gap: 1rem;
}
.sys-swatch__chip {
  aspect-ratio: 1.15;
  border-radius: 4px;
  border: 1px solid color-mix(in srgb, var(--fg) 10%, transparent);
  margin-bottom: 0.4rem;
}
.sys-swatch__name {
  font-size: 0.8rem;
  font-weight: 500;
}
.sys-swatch code {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
}

/* Type specimens */
.sys-type-row {
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}
.sys-type-row .lbl {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.35rem;
}

/* Series grid */
.sys-series {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr));
  gap: 1.75rem 1.25rem;
}

.if-series-card__link {
  text-decoration: none;
  color: inherit;
  display: block;
}
.if-series-card__media {
  margin-bottom: 0.85rem;
}
.if-series-card__title {
  font-family: var(--font-brand);
  font-weight: 500;
  font-size: 1.05rem;
  margin: 0.35rem 0 0.15rem;
}
.if-series-card__count {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

/* Film reel */
.if-reel {
  background: var(--film);
  color: var(--film-text);
  padding: clamp(2rem, 5vh, 3.5rem) 0;
  margin-inline: calc(-1 * clamp(1.5rem, 4vw, 3rem));
  padding-inline: clamp(1.5rem, 4vw, 3rem);
  border-radius: 2px;
}
.if-reel__head {
  margin-bottom: 1.25rem;
}
.if-reel__head .if-eyebrow {
  color: rgba(255, 255, 255, 0.55);
}
.if-reel__blurb {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  opacity: 0.7;
  max-width: 32rem;
}
.if-reel__track {
  display: flex;
  gap: 1rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  scroll-snap-type: x mandatory;
  animation: reel-drift 80s linear infinite;
}
.if-reel__track.is-held {
  animation-play-state: paused;
}
.if-reel__cell {
  flex: 0 0 min(52vw, 200px);
  scroll-snap-align: start;
}
@keyframes reel-drift {
  from { transform: translateX(0); }
  to { transform: translateX(-40%); }
}

/* Masthead quote block */
.sys-masthead {
  position: relative;
  min-height: 56vh;
  display: grid;
  place-items: end start;
  padding: 2rem;
  background: var(--film);
  color: var(--film-text);
  border-radius: 2px;
  overflow: hidden;
}
.sys-masthead__bg {
  position: absolute;
  inset: 0;
  opacity: 1;
}
.sys-masthead__bg.if-kb,
.sys-masthead__bg .if-kb {
  opacity: 1;
}
.sys-masthead__copy {
  position: relative;
  z-index: 4;
  max-width: 28rem;
  pointer-events: none;
  text-shadow: 0 2px 40px rgba(0, 0, 0, 0.45);
}
.sys-masthead__quote {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  font-weight: 400;
  line-height: 1.3;
  margin: 0.75rem 0;
}
.sys-masthead__attr {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.7;
}

/* Books embed on system page */
#sysBooks .book-grid {
  gap: 48px 32px;
}
#sysBooks .book3d {
  --h: 200px;
}

.sys-footer {
  border-top: 1px solid var(--line);
  padding: 2rem clamp(1.5rem, 4vw, 3rem) 3rem;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
}