/* ============================================
   Organisms — complex UI sections
   ============================================ */

/* --- Layout Shell --- */
.page-wrapper {
  max-width: var(--content-width);
  margin-inline: auto;
  padding-inline: var(--size-4);
  padding-top: var(--size-8);
  padding-bottom: var(--size-8);
}

@media (min-width: 768px) {
  .page-wrapper {
    padding-top: var(--size-10);
  }
}

/* --- Header --- */
.site-header {
  margin-bottom: var(--size-10);
}

/* --- Footer --- */
.site-footer {
  margin-top: var(--size-12);
  padding-top: var(--size-7);
  border-top: 1px solid var(--border-light);
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--size-4);
}

.site-footer__copy {
  font-family: var(--font-mono);
  font-size: var(--type-xs);
  color: var(--text-3);
  letter-spacing: 0.02em;
}

/* --- Homepage Intro --- */
.intro {
  margin-bottom: var(--size-10);
}

/* --- Recent Writing Section (homepage) --- */
.recent-writing {
  margin-top: var(--size-11);
}

.recent-writing__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--size-6);
  padding-bottom: var(--size-3);
  border-bottom: 1px solid var(--border-light);
}

.recent-writing__label {
  font-family: var(--font-mono);
  font-size: var(--type-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--brand-warm);
}

.recent-writing__all {
  font-size: var(--type-small);
  color: var(--text-3);
  text-decoration: none;
}

.recent-writing__all:hover {
  color: var(--brand-warm);
}

.recent-writing__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--size-7);
}

/* --- Consulting Hero --- */
.consulting-hero {
  margin-bottom: var(--size-10);
}

/* --- Service Cards --- */
.services-list {
  display: flex;
  flex-direction: column;
  gap: var(--size-10);
}

.service-card {
  background: var(--surface-2);
  border: 1px solid var(--border-light);
  border-left: 3px solid var(--brand-warm);
  border-radius: var(--radius-lg);
  padding: var(--size-6);
  box-shadow: var(--shadow-sm);
  transition:
    transform var(--transition-spring),
    box-shadow var(--transition-normal),
    border-color var(--transition-normal);
}

@media (min-width: 768px) {
  .service-card {
    padding: var(--size-8);
  }
}

.service-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-left-color: var(--brand-warm-dark);
}

.service-card__title {
  font-size: var(--type-h3);
  font-weight: 700;
  margin-bottom: var(--size-4);
}

.service-card__body {
  font-size: 1.0625rem;
  color: var(--text-2);
  font-weight: 400;
  line-height: var(--leading-relaxed);
}

.service-card__body p {
  margin-bottom: var(--size-3);
  color: var(--text-2);
}

.service-card__cta {
  margin-top: var(--size-5);
}

/* --- CTA Block (bottom of consulting) --- */
.cta-block {
  margin-top: var(--size-11);
  padding: var(--size-8);
  border: 1px solid var(--border-light);
  background: var(--surface-2);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  text-align: center;
}

.cta-block__title {
  font-size: var(--type-h3);
  font-weight: 700;
  margin-bottom: var(--size-3);
}

.cta-block__body {
  color: var(--text-2);
  font-weight: 400;
  margin-bottom: var(--size-5);
  max-width: 30rem;
  margin-inline: auto;
}

/* --- Article Content (blog post) --- */
.article-header {
  margin-bottom: var(--size-8);
}

.article-header__title {
  font-size: var(--font-size-fluid-3);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: var(--size-4);
  letter-spacing: -0.02em;
}

.article-header__meta {
  display: flex;
  align-items: center;
  gap: var(--size-3);
  font-family: var(--font-mono);
  font-size: var(--type-xs);
  color: var(--text-3);
  padding-top: var(--size-4);
  border-top: 1px solid var(--border-light);
  letter-spacing: 0.02em;
}

.article-header__meta span {
  color: var(--text-3);
}

/* --- About Page --- */
/* --- Scroll Reveal Animation --- */
@media (prefers-reduced-motion: no-preference) {
  .fade-in {
    animation: fadeIn 400ms var(--ease-3) forwards;
  }

  .service-card,
  .pillar-item {
    opacity: 0;
    transform: translateY(1rem);
    animation: slideUp 600ms var(--ease-spring-3) forwards;
  }

  .service-card:nth-child(1) { animation-delay: 100ms; }
  .service-card:nth-child(2) { animation-delay: 200ms; }
  .service-card:nth-child(3) { animation-delay: 300ms; }

  .pillar-item:nth-child(1) { animation-delay: 100ms; }
  .pillar-item:nth-child(2) { animation-delay: 200ms; }
  .pillar-item:nth-child(3) { animation-delay: 300ms; }
  .pillar-item:nth-child(4) { animation-delay: 400ms; }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(1rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* View Transitions */
@view-transition {
  navigation: auto;
}

::view-transition-old(root) {
  animation: 200ms ease-out both fadeOut;
}

::view-transition-new(root) {
  animation: 300ms ease-in both fadeIn;
}

@keyframes fadeOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* --- Showcase (dev) --- */
.showcase-section {
  margin-bottom: var(--size-6);
  padding: var(--size-4);
  background: var(--surface-2);
  border: 1px solid var(--border-color);
}

.showcase-section__title {
  font-size: var(--type-h3);
  font-weight: 700;
  margin-bottom: var(--size-2);
  color: var(--accent);
}

.showcase-section__desc {
  font-size: var(--type-small);
  color: var(--text-3);
  margin-bottom: var(--size-3);
}

.showcase-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--size-2);
  align-items: flex-start;
}

/* --- Site Navigation --- */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  transition: background var(--transition-normal);
}

[data-theme="dark"] .site-nav {
  background: rgba(15, 23, 42, 0.9);
}

.site-nav__inner {
  max-width: var(--content-width);
  margin-inline: auto;
  padding-inline: var(--space-lg);
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-nav__logo {
  font-family: var(--font-mono);
  font-size: var(--type-small);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-1);
  text-decoration: none;
}

.site-nav__logo:hover {
  color: var(--brand-warm);
}

.site-nav__links {
  display: none;
  align-items: center;
  gap: var(--space-lg);
}

@media (min-width: 768px) {
  .site-nav__links {
    display: flex;
  }
}

.site-nav__link {
  position: relative;
  font-size: var(--type-small);
  font-weight: 500;
  color: var(--text-3);
  text-decoration: none;
  transition: color var(--transition-quick);
}

.site-nav__link::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 2px;
  bottom: -4px;
  left: 0;
  background-color: var(--brand-warm);
  transform: scaleX(0);
  transform-origin: bottom right;
  transition: transform var(--transition-spring);
}

.site-nav__link:hover {
  color: var(--text-1);
}

.site-nav__link:hover::after {
  transform: scaleX(1);
  transform-origin: bottom left;
}

.site-nav__link--active {
  color: var(--text-1);
}

.site-nav__link--active::after {
  transform: scaleX(1);
  background-color: var(--brand-warm);
}

.site-nav__theme-btn {
  width: 2.25rem;
  height: 2.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-2);
  border: none;
  border-radius: var(--radius-md);
  color: var(--text-3);
  cursor: pointer;
  transition: all var(--transition-quick);
}

.site-nav__theme-btn:hover {
  background: var(--surface-3);
  color: var(--brand-warm);
}

.site-nav__theme-btn svg {
  width: 1rem;
  height: 1rem;
}

.site-nav__sun {
  display: block;
}

.site-nav__moon {
  display: none;
}

[data-theme="dark"] .site-nav__sun {
  display: none;
}

[data-theme="dark"] .site-nav__moon {
  display: block;
}

.site-nav__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--size-2);
  margin-right: calc(-1 * var(--size-2));
  background: none;
  border: none;
  color: var(--text-3);
  cursor: pointer;
  transition: color var(--transition-quick);
}

.site-nav__toggle:hover {
  color: var(--text-1);
}

.site-nav__toggle svg {
  width: 1.25rem;
  height: 1.25rem;
}

@media (min-width: 768px) {
  .site-nav__toggle {
    display: none;
  }
}

/* --- Mobile Menu --- */
.mobile-menu {
  display: none;
  background: var(--surface-1);
  border-bottom: 1px solid var(--border-light);
}

.mobile-menu--open {
  display: block;
}

@media (min-width: 768px) {
  .mobile-menu {
    display: none !important;
  }
}

.mobile-menu__inner {
  padding: var(--space-xl) var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.mobile-menu__link {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-3);
  text-decoration: none;
  transition: color var(--transition-quick);
}

.mobile-menu__link:hover {
  color: var(--brand-warm);
}

.mobile-menu__link--active {
  color: var(--text-1);
}

.mobile-menu__theme-btn {
  font-size: var(--type-small);
  font-weight: 500;
  color: var(--text-3);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  padding: 0;
  transition: color var(--transition-quick);
}

.mobile-menu__theme-btn:hover {
  color: var(--brand-warm);
}

/* --- Page Section --- */
.page-section {
  max-width: var(--content-width);
  margin-inline: auto;
  padding-inline: var(--space-lg);
  padding-top: var(--space-4xl);
  padding-bottom: var(--space-2xl);
}

@media (min-width: 768px) {
  .page-section {
    padding-top: 12rem;
    padding-bottom: var(--space-4xl);
  }
}

/* --- Page Title --- */
.page-title {
  font-size: var(--type-h1);
  font-family: var(--font-serif);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: var(--leading-tight);
  color: var(--text-1);
  margin-bottom: var(--space-xl);
}

/* --- Page Subtitle --- */
.page-subtitle {
  font-size: clamp(1.0625rem, 2vw, 1.1875rem);
  color: var(--text-2);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-md);
}

/* --- About Content --- */
.about-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  margin-bottom: var(--space-3xl);
}

@media (min-width: 768px) {
  .about-content {
    max-width: 48rem;
    margin-bottom: var(--size-12);
  }
}

/* --- About Figure (hover overlay) --- */
.about-figure {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-light);
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--transition-normal);
}

.about-figure:hover {
  box-shadow: var(--shadow-lg);
}

.about-figure__image {
  width: 100%;
  display: block;
  transition: transform var(--transition-normal);
}

[data-theme="dark"] .about-figure__image {
  filter: invert(1);
  opacity: 0.9;
}

.about-figure__caption {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-xl);
  background: linear-gradient(to top, rgba(0, 0, 0, 0.75) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.about-figure:hover .about-figure__caption,
.about-figure:focus-within .about-figure__caption {
  opacity: 1;
}

.about-figure:hover .about-figure__image {
  transform: scale(1.03);
}

.about-figure__name {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--space-xs);
}

.about-figure__text {
  font-family: var(--font-mono);
  font-size: var(--type-xs);
  color: rgba(255, 255, 255, 0.85);
  line-height: var(--leading-relaxed);
  letter-spacing: 0.02em;
}

/* --- Pillars Grid --- */
.pillars-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3xl);
}

@media (min-width: 640px) {
  .pillars-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 768px) {
  .pillars-grid {
    gap: var(--space-4xl) var(--space-3xl);
  }
}

.pillar-item {
  padding: var(--size-5);
  background: var(--surface-2);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  transition: all var(--transition-normal);
}

.pillar-item:hover {
  border-color: var(--brand-warm);
  box-shadow: var(--shadow-sm);
}

.pillar-item__title {
  font-family: var(--font-mono);
  font-size: var(--type-small);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--brand-warm);
  margin-bottom: var(--space-md);
}

.pillar-item__text {
  font-size: 1rem;
  color: var(--text-2);
  line-height: var(--leading-relaxed);
}

/* --- Connect Links --- */
.connect-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.connect-link {
  color: var(--text-2);
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition-quick);
}

.connect-link:hover {
  color: var(--brand-warm);
}

/* --- Archive Post (writing page list item) --- */
.archive-post {
  display: flex;
  flex-direction: column;
  padding: 1.25rem var(--space-md);
  margin-inline: calc(-1 * var(--space-md));
  border-bottom: 1px solid var(--border-light);
  text-decoration: none;
  border-radius: var(--radius-lg);
  transition: all var(--transition-quick);
}

@media (min-width: 768px) {
  .archive-post {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.archive-post:hover {
  background: var(--surface-2);
  box-shadow: var(--shadow-sm);
}

.archive-post__info {
  flex: 1;
  min-width: 0;
}

.archive-post__title {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--text-1);
  line-height: var(--leading-tight);
  margin-bottom: 0.25rem;
  transition: color var(--transition-quick);
}

.archive-post:hover .archive-post__title {
  color: var(--brand-warm);
}

.archive-post__desc {
  font-size: var(--type-small);
  color: var(--text-3);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.archive-post__meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-sm);
  flex-shrink: 0;
}

@media (min-width: 768px) {
  .archive-post__meta {
    margin-top: 0;
    margin-left: var(--space-xl);
  }
}

.archive-post__date {
  font-family: var(--font-mono);
  font-size: var(--type-xs);
  color: var(--text-3);
  letter-spacing: 0.02em;
}

.archive-post__arrow {
  width: 1rem;
  height: 1rem;
  color: var(--text-3);
  transition: all var(--transition-quick);
}

.archive-post:hover .archive-post__arrow {
  color: var(--brand-warm);
  transform: translateX(0.25rem);
}

/* --- Article Back Link --- */
.article-back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--type-small);
  font-weight: 500;
  color: var(--text-3);
  text-decoration: none;
  margin-bottom: var(--space-xl);
  transition: color var(--transition-quick);
}

.article-back:hover {
  color: var(--brand-warm);
}

.article-back svg {
  width: 1rem;
  height: 1rem;
}

/* --- Article Breadcrumb --- */
.article-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: var(--type-xs);
  color: var(--text-3);
  margin-bottom: var(--space-lg);
}

.article-breadcrumb a {
  color: var(--text-3);
  text-decoration: none;
  transition: color var(--transition-quick);
}

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

.article-breadcrumb__current {
  color: var(--text-2);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* --- Article Meta Separator --- */
.article-meta-sep {
  color: var(--border-color);
}

/* --- Newsletter Box --- */
.newsletter-box {
  margin-top: var(--space-3xl);
  padding: var(--space-xl);
  background: var(--surface-2);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

@media (min-width: 768px) {
  .newsletter-box {
    padding: var(--space-2xl);
  }
}

.newsletter-box__title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 0.75rem;
}

.newsletter-box__text {
  font-size: 1rem;
  color: var(--text-2);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-lg);
}

/* --- Error Page --- */
.error-page {
  text-align: center;
}

.error-page__title {
  font-size: var(--type-h1);
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: var(--space-md);
}

.error-page__text {
  font-size: clamp(1.0625rem, 2vw, 1.1875rem);
  color: var(--text-2);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-xl);
}

.error-page__actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
}

@media (min-width: 640px) {
  .error-page__actions {
    flex-direction: row;
  }
}