/* ============================================================
   Troiana Guides
   Editorial extension of the core Troiana design system.
   ============================================================ */

.guides {
  min-height: 100vh;
  padding-top: 72px;
  background: var(--canvas);
}

.guide-shell {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-inline: var(--edge);
}

.guide-shell--narrow {
  max-width: 1040px;
}

.guide-eyebrow {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--graphite);
}

.guide-eyebrow::before {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--signal);
  content: "";
}

.guide-eyebrow > span:last-child {
  margin-left: auto;
}

.guide-section {
  padding-block: clamp(88px, 10vw, 144px);
}

.guide-section--paper {
  background: var(--paper);
  border-block: 1px solid var(--hairline);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: var(--space-7);
  align-items: end;
  margin-bottom: var(--space-8);
}

.section-heading h2 {
  max-width: 15ch;
  margin-top: var(--space-4);
  font-size: clamp(38px, 5vw, 64px);
  font-weight: 300;
  line-height: 1.02;
  letter-spacing: -.045em;
}

.section-heading > p {
  color: var(--graphite);
  font-size: 17px;
  line-height: 1.65;
}

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

/* Library */
.library-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(96px, 12vw, 160px) var(--space-7);
  background: var(--paper);
  border-bottom: 1px solid var(--hairline);
}

.library-hero::after {
  position: absolute;
  top: 0;
  right: clamp(24px, 8vw, 140px);
  width: 1px;
  height: 100%;
  background: var(--hairline);
  content: "";
}

.library-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, .55fr);
  gap: clamp(48px, 8vw, 112px);
  align-items: end;
  margin-top: clamp(56px, 8vw, 96px);
}

.library-hero h1,
.platform-hero h1,
.folder-hero h1,
.article-hero h1 {
  font-size: clamp(58px, 8.5vw, 118px);
  font-weight: 300;
  line-height: .9;
  letter-spacing: -.068em;
}

.library-hero h1 em,
.platform-hero h1 em {
  color: var(--signal);
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400;
}

.library-hero__aside > p {
  max-width: 39ch;
  color: var(--graphite);
  font-size: 18px;
  line-height: 1.65;
}

.guide-search {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-6);
  padding: 0 var(--space-4);
  background: var(--canvas);
  border: 1px solid var(--ink);
  border-radius: var(--radius-sm);
}

.guide-search:focus-within {
  border-color: var(--signal);
  box-shadow: 0 0 0 4px rgba(46, 75, 255, .12);
}

.guide-search input {
  width: 100%;
  height: 52px;
  padding: 0;
  background: transparent;
  border: 0;
  outline: 0;
  color: var(--ink);
  font-size: 15px;
}

.guide-search > span:last-child {
  color: var(--graphite);
  font: 11px var(--font-mono);
  white-space: nowrap;
}

.library-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: clamp(72px, 10vw, 136px);
  border-top: 1px solid var(--ink);
}

.library-stats span {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  padding-top: var(--space-4);
  color: var(--graphite);
  font: 12px var(--font-mono);
  text-transform: uppercase;
  letter-spacing: .05em;
}

.library-stats strong {
  color: var(--ink);
  font: 500 20px var(--font-sans);
  letter-spacing: -.02em;
}

.collection-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
}

.collection-card {
  display: flex;
  min-height: 330px;
  padding: var(--space-5);
  flex-direction: column;
  justify-content: space-between;
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  transition: transform var(--dur-micro) var(--ease-standard),
              border-color var(--dur-micro) var(--ease-standard),
              box-shadow var(--dur-micro) var(--ease-standard);
}

.collection-card:hover {
  transform: translateY(-4px);
  border-color: var(--ink);
  box-shadow: var(--shadow-card);
}

.collection-card__top,
.collection-card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.platform-icon {
  display: grid;
  width: 64px;
  height: 64px;
  place-items: center;
  flex: 0 0 auto;
  background: var(--paper);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
}

.platform-icon img {
  width: 38px;
  height: 38px;
  object-fit: contain;
}

.collection-card__count,
.collection-card__foot,
.collection-card__kicker {
  color: var(--graphite);
  font: 12px var(--font-mono);
  letter-spacing: .06em;
  text-transform: uppercase;
}

.collection-card__kicker {
  margin-bottom: var(--space-3);
  color: var(--signal);
}

.collection-card h3 {
  margin-bottom: var(--space-3);
  font-size: clamp(28px, 3vw, 38px);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -.04em;
}

.collection-card p:not(.collection-card__kicker) {
  max-width: 44ch;
  color: var(--graphite);
  font-size: 15px;
  line-height: 1.6;
}

.collection-card__foot {
  padding-top: var(--space-4);
  border-top: 1px solid var(--hairline);
}

.collection-card__foot span:last-child {
  color: var(--signal);
  font-size: 18px;
  transition: transform var(--dur-micro) var(--ease-standard);
}

.collection-card:hover .collection-card__foot span:last-child {
  transform: translate(3px, -3px);
}

.empty-state {
  padding: var(--space-7);
  color: var(--graphite);
  text-align: center;
  border: 1px dashed var(--wire-stroke);
  border-radius: var(--radius-md);
}

.atlas-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  overflow: hidden;
  background: var(--hairline);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  gap: 1px;
}

.atlas-item {
  display: flex;
  min-width: 0;
  height: 88px;
  padding: var(--space-3);
  align-items: center;
  gap: var(--space-3);
  background: var(--canvas);
  color: var(--muted-word);
  cursor: default;
}

.atlas-item img {
  width: 28px;
  height: 28px;
  flex: 0 0 auto;
  object-fit: contain;
  opacity: .33;
  filter: grayscale(1);
}

.atlas-item span {
  overflow: hidden;
  font: 11px var(--font-mono);
  text-overflow: ellipsis;
  text-transform: capitalize;
  white-space: nowrap;
}

.atlas-item.is-published {
  color: var(--ink);
  cursor: pointer;
  transition: background var(--dur-micro) var(--ease-standard);
}

.atlas-item.is-published:hover {
  background: var(--signal);
  color: #fff;
}

.atlas-item.is-published img {
  opacity: 1;
  filter: none;
}

/* Breadcrumbs */
.guide-crumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  color: var(--graphite);
  font: 11px var(--font-mono);
  letter-spacing: .05em;
  text-transform: uppercase;
}

.guide-crumbs a {
  transition: color var(--dur-micro) var(--ease-standard);
}

.guide-crumbs a:hover,
.guide-crumbs span[aria-current="page"] {
  color: var(--ink);
}

.guide-crumbs > span:not([aria-current]) {
  color: var(--wire-stroke);
}

/* Platform */
.platform-hero {
  padding-block: var(--space-6) var(--space-8);
  background: var(--paper);
  border-bottom: 1px solid var(--hairline);
}

.platform-hero__grid {
  display: grid;
  grid-template-columns: minmax(180px, .38fr) minmax(0, 1fr);
  gap: clamp(48px, 8vw, 112px);
  align-items: end;
  margin-top: clamp(72px, 10vw, 128px);
}

.platform-icon--hero {
  width: 112px;
  height: 112px;
  margin-bottom: var(--space-5);
  background: var(--canvas);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.platform-icon--hero img {
  width: 66px;
  height: 66px;
}

.platform-hero h1 {
  font-size: clamp(58px, 8vw, 108px);
}

.platform-hero__lede {
  max-width: 660px;
  margin-top: var(--space-5);
  color: var(--graphite);
  font-size: 20px;
  line-height: 1.6;
}

.platform-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.guide-button {
  display: inline-flex;
  min-height: 48px;
  padding: 0 var(--space-5);
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  border: 1px solid var(--ink);
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 500;
  transition: transform var(--dur-micro) var(--ease-standard);
}

.guide-button:hover {
  transform: translateY(-2px);
}

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

.platform-facts {
  display: grid;
  grid-template-columns: .7fr 1.6fr .7fr;
  margin-top: clamp(72px, 10vw, 128px);
  border-top: 1px solid var(--ink);
}

.platform-facts > span {
  display: flex;
  padding: var(--space-4) var(--space-5) 0 0;
  flex-direction: column;
  gap: var(--space-2);
}

.platform-facts small {
  color: var(--graphite);
  font: 11px var(--font-mono);
  letter-spacing: .06em;
  text-transform: uppercase;
}

.platform-facts strong {
  font-size: 15px;
  font-weight: 500;
}

.folder-grid {
  display: grid;
  gap: var(--space-4);
}

.folder-card {
  display: grid;
  grid-template-columns: 52px 76px minmax(0, 1fr) auto;
  min-height: 154px;
  padding: var(--space-5);
  align-items: center;
  gap: var(--space-5);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  transition: transform var(--dur-micro) var(--ease-standard),
              border-color var(--dur-micro) var(--ease-standard);
}

.folder-card:hover {
  transform: translateX(4px);
  border-color: var(--ink);
}

.folder-card__number {
  color: var(--graphite);
  font: 12px var(--font-mono);
}

.folder-card__icon,
.folder-symbol {
  position: relative;
  display: block;
  width: 64px;
  height: 46px;
  background: var(--signal);
  border-radius: 5px 5px 8px 8px;
}

.folder-card__icon::before,
.folder-symbol::before {
  position: absolute;
  top: -8px;
  left: 0;
  width: 28px;
  height: 12px;
  background: var(--signal);
  border-radius: 5px 5px 0 0;
  content: "";
}

.folder-card__icon i,
.folder-symbol i {
  position: absolute;
  inset: 5px;
  border: 1px solid rgba(255, 255, 255, .45);
  border-radius: 3px;
}

.folder-card__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.folder-card__body > span {
  font-size: 25px;
  font-weight: 500;
  letter-spacing: -.025em;
}

.folder-card__body small {
  max-width: 60ch;
  color: var(--graphite);
  font-size: 15px;
}

.folder-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  color: var(--graphite);
  font: 11px var(--font-mono);
  letter-spacing: .05em;
  text-transform: uppercase;
}

.folder-card__meta b {
  color: var(--signal);
  font: 18px var(--font-sans);
}

.guide-list {
  border-top: 1px solid var(--ink);
}

.guide-row {
  display: grid;
  grid-template-columns: 44px minmax(240px, .9fr) minmax(300px, 1fr) 24px;
  gap: var(--space-5);
  align-items: center;
  padding-block: var(--space-5);
  border-bottom: 1px solid var(--hairline);
  transition: padding var(--dur-micro) var(--ease-standard),
              color var(--dur-micro) var(--ease-standard);
}

.guide-row:hover {
  padding-inline: var(--space-3);
  color: var(--signal);
}

.guide-row__number,
.guide-row small {
  color: var(--graphite);
  font: 11px var(--font-mono);
  letter-spacing: .05em;
  text-transform: uppercase;
}

.guide-row > span:nth-child(2) {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.guide-row strong {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.3;
}

.guide-row p {
  color: var(--graphite);
  font-size: 14px;
  line-height: 1.55;
}

.guide-row b {
  color: var(--signal);
  font-weight: 400;
}

/* Folder */
.folder-hero {
  padding-block: var(--space-6) clamp(88px, 12vw, 152px);
  background: var(--paper);
  border-bottom: 1px solid var(--hairline);
}

.folder-hero__grid {
  display: grid;
  grid-template-columns: minmax(180px, .38fr) minmax(0, 1fr);
  gap: clamp(48px, 8vw, 112px);
  align-items: end;
  margin-top: clamp(72px, 10vw, 128px);
}

.platform-icon--small {
  width: 64px;
  height: 64px;
  margin-bottom: var(--space-4);
  background: var(--canvas);
}

.platform-icon--small img {
  width: 36px;
  height: 36px;
}

.folder-symbol {
  width: 86px;
  height: 62px;
  margin: 0 0 var(--space-7) 8px;
  border-radius: 7px 7px 11px 11px;
}

.folder-symbol::before {
  top: -11px;
  width: 38px;
  height: 15px;
}

.folder-hero h1 {
  max-width: 12ch;
  font-size: clamp(54px, 7vw, 96px);
}

.folder-hero__grid > div:last-child > p {
  max-width: 620px;
  margin-top: var(--space-5);
  color: var(--graphite);
  font-size: 19px;
}

.article-grid {
  display: grid;
  gap: var(--space-4);
}

.article-card {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) 32px;
  min-height: 240px;
  padding: var(--space-6);
  align-items: start;
  gap: var(--space-5);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  transition: transform var(--dur-micro) var(--ease-standard),
              border-color var(--dur-micro) var(--ease-standard),
              box-shadow var(--dur-micro) var(--ease-standard);
}

.article-card:hover {
  transform: translateY(-3px);
  border-color: var(--ink);
  box-shadow: var(--shadow-card);
}

.article-card__number {
  color: var(--graphite);
  font: 12px var(--font-mono);
}

.article-card h3 {
  max-width: 24ch;
  margin: var(--space-4) 0;
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -.035em;
}

.article-card div > p:last-child {
  max-width: 60ch;
  color: var(--graphite);
  font-size: 16px;
}

.article-card__arrow {
  color: var(--signal);
  font-size: 22px;
}

.text-link {
  display: inline-flex;
  margin-top: var(--space-7);
  padding-bottom: var(--space-2);
  color: var(--signal);
  font: 12px var(--font-mono);
  border-bottom: 1px solid var(--signal);
}

/* Article */
.article-hero {
  padding-block: var(--space-6) clamp(88px, 11vw, 136px);
  background: var(--paper);
  border-bottom: 1px solid var(--hairline);
}

.article-hero__grid {
  display: grid;
  grid-template-columns: minmax(150px, .28fr) minmax(0, 1fr);
  gap: clamp(48px, 8vw, 112px);
  align-items: start;
  margin-top: clamp(72px, 10vw, 120px);
}

.article-index {
  display: flex;
  min-height: 148px;
  padding-top: var(--space-3);
  flex-direction: column;
  justify-content: space-between;
  border-top: 1px solid var(--ink);
}

.article-index span {
  font-size: 54px;
  font-weight: 300;
  letter-spacing: -.05em;
}

.article-index small {
  color: var(--signal);
  font: 11px var(--font-mono);
  letter-spacing: .06em;
  text-transform: uppercase;
}

.article-hero h1 {
  max-width: 15ch;
  margin-top: var(--space-5);
  font-size: clamp(50px, 7vw, 90px);
  line-height: .97;
  overflow-wrap: break-word;
}

.article-hero__grid > div:last-child > p:last-child {
  max-width: 680px;
  margin-top: var(--space-5);
  color: var(--graphite);
  font-size: 20px;
  line-height: 1.6;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(190px, .3fr) minmax(0, 760px);
  gap: clamp(64px, 10vw, 144px);
  align-items: start;
  padding-block: clamp(88px, 10vw, 144px);
}

.article-aside {
  position: sticky;
  top: 112px;
}

.article-aside dl {
  margin: var(--space-6) 0;
  border-top: 1px solid var(--ink);
}

.article-aside dl > div {
  display: flex;
  padding-block: var(--space-3);
  justify-content: space-between;
  gap: var(--space-3);
  border-bottom: 1px solid var(--hairline);
}

.article-aside dt {
  color: var(--graphite);
  font: 10px var(--font-mono);
  letter-spacing: .06em;
  text-transform: uppercase;
}

.article-aside dd {
  margin: 0;
  font-size: 12px;
  text-align: right;
}

.article-aside > a {
  color: var(--signal);
  font: 11px var(--font-mono);
  text-transform: uppercase;
}

.article-body > section {
  padding-block: var(--space-8);
  border-top: 1px solid var(--hairline);
}

.article-body > section:first-child {
  padding-top: 0;
  border-top: 0;
}

.article-body h2 {
  max-width: 18ch;
  margin: var(--space-4) 0 var(--space-5);
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -.035em;
}

.article-body section > p:not(.guide-eyebrow),
.article-body li {
  color: var(--graphite);
  font-size: 17px;
  line-height: 1.75;
}

.article-callout {
  margin-top: var(--space-6);
  padding: var(--space-5);
  background: var(--signal);
  border-radius: var(--radius-md);
  color: #fff;
}

.article-callout span {
  font: 11px var(--font-mono);
  letter-spacing: .06em;
  text-transform: uppercase;
}

.article-callout p {
  margin-top: var(--space-3);
  font-size: 18px;
  line-height: 1.6;
}

.step-list {
  margin: var(--space-6) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--ink);
}

.step-list li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: var(--space-4);
  padding-block: var(--space-5);
  border-bottom: 1px solid var(--hairline);
}

.step-list span {
  padding-top: 3px;
  color: var(--signal);
  font: 11px var(--font-mono);
}

.practice-list {
  display: grid;
  gap: var(--space-3);
  margin: var(--space-6) 0;
  padding: 0;
  list-style: none;
}

.practice-list li {
  position: relative;
  padding: var(--space-4) var(--space-4) var(--space-4) 44px;
  background: var(--paper);
  border-radius: var(--radius-sm);
}

.practice-list li::before {
  position: absolute;
  top: 50%;
  left: 18px;
  width: 8px;
  height: 8px;
  border: 2px solid var(--signal);
  border-radius: 50%;
  transform: translateY(-50%);
  content: "";
}

.source-list {
  margin: var(--space-6) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--ink);
}

.source-list a {
  display: flex;
  padding-block: var(--space-4);
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  border-bottom: 1px solid var(--hairline);
  font-size: 15px;
}

.source-list a:hover {
  color: var(--signal);
}

.article-next {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.article-next a {
  display: flex;
  min-height: 144px;
  padding: var(--space-5);
  flex-direction: column;
  justify-content: space-between;
  background: var(--paper);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
}

.article-next a:hover {
  border-color: var(--ink);
}

.article-next span {
  color: var(--graphite);
  font: 10px var(--font-mono);
  letter-spacing: .06em;
  text-transform: uppercase;
}

.article-next strong {
  font-size: 17px;
  font-weight: 500;
}

@media (max-width: 980px) {
  .library-hero__grid,
  .platform-hero__grid,
  .folder-hero__grid,
  .article-hero__grid,
  .article-layout {
    grid-template-columns: 1fr;
  }

  .library-hero__grid {
    align-items: start;
  }

  .library-hero__aside {
    max-width: 620px;
  }

  .atlas-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .platform-hero__grid > div:first-child,
  .folder-hero__grid > div:first-child {
    display: flex;
    align-items: center;
    gap: var(--space-4);
  }

  .platform-icon--hero,
  .platform-icon--small {
    margin-bottom: 0;
  }

  .article-aside {
    position: static;
    display: grid;
    grid-template-columns: 72px minmax(0, 1fr);
    gap: var(--space-5);
  }

  .article-aside dl {
    margin: 0;
  }

  .article-aside > a {
    grid-column: 2;
  }

  .guide-row {
    grid-template-columns: 36px minmax(0, 1fr) 24px;
  }

  .guide-row p {
    display: none;
  }
}

@media (max-width: 1120px) {
  .collection-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .guide-shell {
    padding-inline: var(--space-5);
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: var(--space-5);
    margin-bottom: var(--space-7);
  }

  .library-hero {
    padding-top: var(--space-8);
  }

  .library-hero__grid {
    margin-top: var(--space-7);
  }

  .library-hero h1,
  .platform-hero h1,
  .folder-hero h1 {
    font-size: clamp(48px, 15vw, 70px);
  }

  .article-hero h1 {
    max-width: 100%;
    font-size: clamp(42px, 13vw, 54px);
    letter-spacing: -.052em;
  }

  .library-stats {
    grid-template-columns: 1fr;
  }

  .library-stats span {
    padding-block: var(--space-3);
    border-bottom: 1px solid var(--hairline);
  }

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

  .collection-card {
    min-height: 320px;
    padding: var(--space-5);
  }

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

  .atlas-item {
    height: 72px;
  }

  .platform-facts {
    grid-template-columns: 1fr;
  }

  .platform-facts > span {
    padding-block: var(--space-3);
    border-bottom: 1px solid var(--hairline);
  }

  .folder-card {
    grid-template-columns: 36px 58px minmax(0, 1fr);
    min-height: 140px;
    padding: var(--space-4);
    gap: var(--space-3);
  }

  .folder-card__icon {
    width: 50px;
    height: 38px;
  }

  .folder-card__body > span {
    font-size: 20px;
  }

  .folder-card__body small,
  .folder-card__meta {
    display: none;
  }

  .article-card {
    grid-template-columns: 30px minmax(0, 1fr);
    min-height: 220px;
    padding: var(--space-5);
  }

  .article-card__arrow {
    display: none;
  }

  .article-aside {
    display: block;
  }

  .article-aside dl {
    margin-block: var(--space-5);
  }

  .article-next {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .collection-card,
  .folder-card,
  .article-card,
  .guide-row,
  .guide-button {
    transition: none;
  }
}