@import url("styles.css");

.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  height: 3px;
  background: transparent;
  pointer-events: none;
}

.reading-progress__bar {
  height: 100%;
  width: 0%;
  background: var(--color-gold);
  transform-origin: left center;
  transition: width 0.08s linear;
}

.page-article .site-header {
  background: rgba(18, 19, 21, 0.72);
}

.blog-hero {
  padding: calc(var(--nav-h) + 3.5rem) 0 3rem;
  background:
    linear-gradient(
      180deg,
      rgba(18, 19, 21, 0.92) 0%,
      rgba(18, 19, 21, 0.88) 100%
    ),
    url("https://images.unsplash.com/photo-1477959858617-67f85cf4f1df?auto=format&fit=crop&w=1800&q=75")
      center / cover no-repeat;
  color: var(--color-cream);
}

.blog-hero__inner {
  margin: 0 auto;
}

.blog-hero .eyebrow {
  color: var(--color-gold);
}

.blog-hero__title {
  margin: 0 0 1rem;
  max-width: 22ch;
  font-family: var(--font-serif);
  font-size: clamp(2.35rem, 5vw, 3.75rem);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.015em;
}

.blog-hero__lede {
  margin: 0;
  max-width: 36rem;
  font-size: 1.05rem;
  font-weight: 300;
  line-height: 1.7;
  color: rgba(249, 248, 246, 0.72);
}

.blog-shell {
  padding: var(--space-xl) 0 var(--space-2xl);
}

.blog-filters {
  margin: 0 0 var(--space-xl);
  padding: 0;
  max-width: none;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 1rem;
  margin-bottom: 0.85rem;
}

.article-tag {
  display: inline-block;
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.article-meta__item {
  font-size: 0.75rem;
  color: var(--color-muted);
}

.author-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  margin-top: 1.25rem;
}

.author-badge__mark {
  width: 0.55rem;
  height: 0.55rem;
  background: var(--color-gold);
  flex-shrink: 0;
}

.author-badge__text {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-slate);
}

.featured-article {
  margin-bottom: var(--space-xl);
  border: 1px solid var(--color-line);
  background: var(--color-white);
}

.featured-article.is-hidden {
  display: none;
}

.featured-article__link {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  min-height: 22rem;
}

.featured-article__media {
  overflow: hidden;
  background: #dddcd8;
}

.featured-article__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.9s var(--ease);
}

.featured-article__link:hover .featured-article__media img {
  transform: scale(1.04);
}

.featured-article__body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(1.75rem, 4vw, 2.75rem);
}

.featured-article__title {
  margin: 0 0 0.85rem;
  font-family: var(--font-serif);
  font-size: clamp(1.85rem, 3vw, 2.55rem);
  font-weight: 500;
  line-height: 1.18;
}

.featured-article__excerpt {
  margin: 0;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.7;
  color: var(--color-muted);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.25rem, 2.5vw, 1.75rem);
}

.blog-card {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  transition:
    border-color 0.35s var(--ease),
    transform 0.35s var(--ease);
}

.blog-card.is-hidden {
  display: none;
}

.blog-card:hover {
  border-color: rgba(18, 19, 21, 0.22);
  transform: translateY(-2px);
}

.blog-card__media {
  overflow: hidden;
  aspect-ratio: 16 / 11;
  background: #dddcd8;
}

.blog-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.85s var(--ease);
}

.blog-card__link:hover .blog-card__media img {
  transform: scale(1.04);
}

.blog-card__body {
  padding: 1.25rem 1.2rem 1.4rem;
}

.blog-card__title {
  margin: 0 0 0.55rem;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 500;
  line-height: 1.25;
}

.blog-card__excerpt {
  margin: 0 0 1rem;
  font-size: 0.875rem;
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-muted);
}

.blog-card__date {
  font-size: 0.75rem;
  color: var(--color-muted);
}

.blog-empty {
  margin: 1.5rem 0 0;
  color: var(--color-muted);
  font-size: 0.9375rem;
}

.article-header {
  padding-top: calc(var(--nav-h) + 2.5rem);
}

.article-header__inner {
  padding: 0 0 2rem;
}

.article-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 1.25rem;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.article-breadcrumb a:hover {
  color: var(--color-gold);
}

.article-header .article-tag {
  display: inline-block;
  margin-bottom: 0.85rem;
}

.article-header__title {
  margin: 0 0 1rem;
  font-family: var(--font-serif);
  font-size: clamp(2.25rem, 5vw, 3.35rem);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.015em;
}

.article-header__subtitle {
  margin: 0 0 1.75rem;
  font-size: 1.125rem;
  font-weight: 300;
  line-height: 1.65;
  color: var(--color-muted);
}

.article-header__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-line);
}

.article-header__meta .author-badge {
  margin-top: 0;
}

.article-header__date {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0;
  text-transform: none;
  color: var(--color-muted);
}

.share-tools {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.share-tools__label {
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.share-btn {
  min-height: 2.25rem;
  padding: 0.45rem 0.95rem;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-slate);
  border: 1px solid var(--color-line);
  transition:
    border-color 0.3s var(--ease),
    background-color 0.3s var(--ease),
    color 0.3s var(--ease);
}

.share-btn:hover,
.share-btn.is-copied {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

.article-header__figure {
  margin: 0;
  max-height: 28rem;
  overflow: hidden;
}

.article-header__figure img {
  width: 100%;
  height: 100%;
  max-height: 28rem;
  object-fit: cover;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(18rem, 20rem) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
  justify-content: center;
  padding: var(--space-xl) 0 var(--space-2xl);
}

.article-sidebar {
  position: sticky;
  top: calc(var(--nav-h) + 1.5rem);
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.toc {
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-line);
}

.toc__heading {
  margin: 0 0 0.85rem;
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.toc__list {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  list-style: none;
  counter-reset: toc;
  margin: 0;
  padding: 0;
}

.toc__list li {
  counter-increment: toc;
}

.toc__list a {
  display: block;
  padding-left: 1.5rem;
  position: relative;
  font-size: 0.8125rem;
  line-height: 1.45;
  color: var(--color-muted);
  transition: color 0.25s var(--ease);
}

.toc__list a::before {
  content: counter(toc, decimal-leading-zero);
  position: absolute;
  left: 0;
  font-size: 0.6875rem;
  color: rgba(90, 90, 90, 0.55);
}

.toc__list a:hover,
.toc__list a.is-active {
  color: var(--color-slate);
}

.toc__list a.is-active {
  color: var(--color-gold);
}

.toc__list a.is-active::before {
  color: var(--color-gold);
}

.inquire-widget {
  padding: 1.35rem;
  background: var(--color-white);
  border: 1px solid var(--color-line);
}

.inquire-widget__eyebrow {
  margin: 0 0 0.45rem;
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.inquire-widget__title {
  margin: 0 0 0.55rem;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 500;
  line-height: 1.25;
}

.inquire-widget__text {
  margin: 0 0 1.15rem;
  font-size: 0.8125rem;
  font-weight: 300;
  line-height: 1.55;
  color: var(--color-muted);
}

.inquire-form {
  display: grid;
  gap: 0.65rem;
}

.inquire-form input,
.inquire-form select {
  width: 100%;
  padding: 0.7rem 0.8rem;
  background: var(--color-cream);
  border: 1px solid transparent;
  border-radius: var(--radius);
}

.inquire-form input:focus,
.inquire-form select:focus {
  outline: none;
  border-color: var(--color-gold);
  background: var(--color-white);
}

.inquire-form select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%235A5A5A' d='M1.4 0.6 6 5.2 10.6.6 12 2 6 8 0 2z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.85rem center;
  padding-right: 2.25rem;
}

.inquire-form .btn {
  width: 100%;
  margin-top: 0.25rem;
}

.inquire-form__status {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--color-slate);
}

.inquire-form__status.is-error {
  color: #8a3b3b;
}

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

.article-content {
  font-size: 1.0625rem;
  font-weight: 300;
  line-height: 1.8;
  color: var(--color-slate);
}

.article-lead {
  margin: 0 0 1.75rem;
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 2.2vw, 1.45rem);
  font-weight: 400;
  line-height: 1.55;
}

.article-content h2 {
  margin: 2.75rem 0 1rem;
  font-family: var(--font-serif);
  font-size: clamp(1.65rem, 2.5vw, 2rem);
  font-weight: 500;
  line-height: 1.25;
  scroll-margin-top: calc(var(--nav-h) + 1.5rem);
}

.article-content p {
  margin: 0 0 1.25rem;
}

.article-content ul {
  margin: 0 0 1.35rem;
  padding-left: 1.15rem;
  list-style: disc;
}

.article-content li {
  margin-bottom: 0.45rem;
  padding-left: 0.25rem;
}

.article-content strong {
  font-weight: 500;
}

.callout {
  margin: 2rem 0;
  padding: 1.25rem 1.35rem 1.25rem 1.5rem;
  border-left: 2px solid var(--color-gold);
  background: var(--color-white);
}

.callout__label {
  margin: 0 0 0.45rem;
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.callout p:last-child {
  margin-bottom: 0;
}

.callout--architecture {
  border-left-color: var(--color-slate);
}

.callout--architecture .callout__label {
  color: var(--color-slate);
}

.callout--legal {
  border-left-color: #8a3b3b;
  background: rgba(138, 59, 59, 0.04);
}

.callout--legal .callout__label {
  color: #8a3b3b;
}

.callout--lease {
  border-left-color: var(--color-gold);
}

.formula-block {
  margin: 1.75rem 0 2rem;
  background: var(--color-slate);
  color: var(--color-cream);
  overflow-x: auto;
}

.formula-block__label {
  margin: 0;
  padding: 0.75rem 1.15rem 0;
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.formula-block__code {
  margin: 0;
  padding: 0.85rem 1.15rem 1.25rem;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.8125rem;
  line-height: 1.65;
  white-space: pre;
}

.article-quote {
  margin: 2.25rem 0;
  padding: 0 0 0 1.35rem;
  border-left: 2px solid var(--color-gold);
}

.article-quote p {
  margin: 0 0 0.75rem;
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-style: italic;
  font-weight: 400;
  line-height: 1.4;
}

.article-quote cite {
  font-size: 0.75rem;
  font-style: normal;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.article-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-line);
}

@media (max-width: 1024px) {
  .featured-article__link {
    grid-template-columns: 1fr;
  }

  .featured-article__media {
    aspect-ratio: 16 / 10;
  }

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

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

  .article-sidebar {
    position: static;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 720px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }

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

  .article-header__meta {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .reading-progress__bar {
    transition: none;
  }
}