:root {
  --container-max: 1200px;
  --container-padding-desktop: 64px;
  --container-padding-tablet: 24px;
  --container-padding-mobile: 16px;
}

* { box-sizing: border-box; }

html {
  background: var(--bg-deep);
  color-scheme: dark;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text-secondary);
  background:
    linear-gradient(180deg, rgba(48, 44, 40, 0.7), rgba(18, 17, 16, 0) 18rem),
    linear-gradient(180deg, var(--bg-deep), var(--bg-base) 16%, var(--bg-deep) 100%);
  overflow-x: hidden;
  text-wrap: pretty;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.26;
  background-image:
    radial-gradient(circle at 12% 12%, rgba(255, 255, 255, 0.02), transparent 22%),
    radial-gradient(circle at 84% 4%, rgba(224, 122, 95, 0.08), transparent 24%),
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: cover, cover, 120px 120px, 120px 120px;
  mask-image: radial-gradient(circle at center, black 42%, transparent 90%);
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }

:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 3px;
}

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

.page-shell {
  position: relative;
  isolation: isolate;
}

.container {
  width: min(100% - (var(--container-padding-desktop) * 2), var(--container-max));
  margin-inline: auto;
}

main {
  padding: clamp(6rem, 10vw, 8rem) 0 clamp(4rem, 7vw, 6rem);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--text-muted);
  transition: color 180ms ease;
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: var(--accent-primary);
}

.breadcrumb-sep { color: var(--text-faint); }

.section-rule {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 1.6rem;
  flex-wrap: wrap;
}

.section-rule .section-number,
.section-rule .meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.section-rule .section-number strong {
  color: var(--accent-primary);
  font-weight: 600;
}

.page-intro {
  display: grid;
  gap: 1.4rem;
  margin-bottom: clamp(2.5rem, 4vw, 3.5rem);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-primary);
}

.eyebrow::before {
  content: "";
  width: 18px;
  height: 1px;
  background: currentColor;
}

.page-intro h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
  color: var(--text-primary);
}

.page-intro h1 em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 500;
}

.page-intro h1 .dot { color: var(--accent-primary); }

.intro-copy {
  margin: 0;
  max-width: 60ch;
  color: var(--text-secondary);
  font-size: clamp(1rem, 1rem + 0.25vw, 1.12rem);
}

.archive-filters {
  display: grid;
  gap: 0.85rem;
  margin-bottom: 1.5rem;
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.filter-row-top {
  gap: 0.75rem;
  align-items: center;
}

.filter-search { flex: 1 1 240px; }

.filter-search input,
.filter-sort select {
  width: 100%;
  min-height: 40px;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.92rem;
}

.filter-search input:focus-visible,
.filter-sort select:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0.32rem 0.85rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-default);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-secondary);
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

.filter-chip:hover,
.filter-chip:focus-visible {
  color: var(--text-primary);
  border-color: var(--accent-primary);
}

.filter-chip.is-active {
  color: var(--accent-primary);
  border-color: var(--accent-primary);
  background: var(--accent-soft);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}

.blog-card {
  grid-column: span 6;
  display: grid;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.015), transparent 32%),
    var(--bg-surface);
  box-shadow: var(--shadow-sm);
  transition:
    transform 200ms ease,
    border-color 200ms ease,
    box-shadow 200ms ease;
}

.blog-card:hover,
.blog-card:focus-within {
  transform: translateY(-2px);
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-md);
}

.blog-link {
  display: grid;
  height: 100%;
}

.card-cover {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-bottom: 1px solid var(--border-subtle);
}

.card-cover::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 42%;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0), rgba(18, 17, 16, 0.56));
  pointer-events: none;
}

.cover-scene {
  position: absolute;
  inset: 0;
  z-index: 0;
  transition: transform 500ms cubic-bezier(0.22, 0.61, 0.36, 1);
}

.card-illustration {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 1;
  transition: transform 500ms cubic-bezier(0.22, 0.61, 0.36, 1);
}

.blog-card:hover .cover-scene,
.blog-card:focus-within .cover-scene,
.blog-card:hover .card-illustration,
.blog-card:focus-within .card-illustration {
  transform: scale(1.02);
}

.scene-notebook {
  background:
    radial-gradient(circle at 20% 18%, rgba(224, 122, 95, 0.22), transparent 20%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(0, 0, 0, 0.14)),
    linear-gradient(135deg, #39251d 0%, #241d1a 52%, #171412 100%);
}

.scene-columns {
  background:
    radial-gradient(circle at 80% 16%, rgba(212, 168, 75, 0.16), transparent 18%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(0, 0, 0, 0.12)),
    linear-gradient(135deg, #25282d 0%, #23211f 46%, #171412 100%);
}

.scene-notes {
  background:
    radial-gradient(circle at 82% 18%, rgba(122, 132, 80, 0.18), transparent 18%),
    radial-gradient(circle at 22% 78%, rgba(224, 122, 95, 0.16), transparent 20%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(0, 0, 0, 0.12)),
    linear-gradient(135deg, #2f241d 0%, #221d1a 46%, #151311 100%);
}

.scene-essay {
  background:
    radial-gradient(circle at 20% 22%, rgba(212, 168, 75, 0.14), transparent 20%),
    radial-gradient(circle at 82% 76%, rgba(224, 122, 95, 0.18), transparent 18%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(0, 0, 0, 0.1)),
    linear-gradient(135deg, #2a201d 0%, #201a18 48%, #151210 100%);
}

.card-date {
  position: absolute;
  top: 1rem;
  left: 1rem;
  z-index: 1;
  padding: 0.5rem 0.8rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(18, 17, 16, 0.72);
  backdrop-filter: blur(12px);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.card-read-time {
  position: absolute;
  top: 1rem;
  right: 1rem;
  z-index: 1;
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(18, 17, 16, 0.6);
  backdrop-filter: blur(10px);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.card-content {
  display: grid;
  gap: 0.8rem;
  padding: 1.35rem 1.4rem 1.45rem;
}

.card-content h3 {
  margin: 0;
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.card-content p {
  margin: 0;
  color: var(--text-secondary);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0.18rem 0.55rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
  font-family: var(--font-display);
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tag.is-accent {
  background: var(--accent-soft);
  border-color: var(--border-accent);
  color: var(--accent-primary);
}

.card-cta {
  margin-top: 0.4rem;
  align-self: start;
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 200ms ease, transform 200ms ease;
  color: var(--accent-primary);
  font-family: var(--font-display);
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.blog-card:hover .card-cta,
.blog-card:focus-within .card-cta {
  opacity: 1;
  transform: translateX(0);
}

.load-more-wrap {
  display: flex;
  justify-content: center;
  margin-top: 2rem;
}

.load-more-btn {
  min-height: 44px;
  padding: 0.65rem 1.4rem;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: border-color 180ms ease, color 180ms ease, background-color 180ms ease;
}

.load-more-btn:hover,
.load-more-btn:focus-visible {
  color: var(--accent-primary);
  border-color: var(--accent-primary);
  background: var(--accent-soft);
}

.archive-empty {
  grid-column: 1 / -1;
  padding: 3rem 1.5rem;
  text-align: center;
  border: 1px dashed var(--border-default);
  border-radius: var(--radius-lg);
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.015);
}

.archive-empty p {
  margin: 0 0 0.5rem;
  font-size: 0.95rem;
}

.archive-empty .archive-empty-hint {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.02em;
}

.archive-empty code {
  background: rgba(255, 255, 255, 0.05);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
}

.site-footer {
  padding: clamp(4rem, 6vw, 6rem) 0 3rem;
  border-top: 1px solid var(--border-default);
  margin-top: clamp(3rem, 4.5vw, 4.5rem);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.7fr 1fr;
  gap: 2rem;
  align-items: start;
}

.footer-about p {
  max-width: 34ch;
  margin: 0.85rem 0 0;
}

.footer-list {
  display: grid;
  gap: 0.8rem;
}

.footer-list strong {
  color: var(--text-muted);
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.footer-list a {
  color: var(--text-secondary);
  font-size: 0.96rem;
  width: fit-content;
}

.footer-list a:hover,
.footer-list a:focus-visible { color: var(--accent-primary); }

.footer-meta {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
}

.footer-bar {
  margin-top: 2.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  color: var(--text-muted);
  font-family: var(--font-display);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity 500ms cubic-bezier(0.22, 0.61, 0.36, 1),
    transform 500ms cubic-bezier(0.22, 0.61, 0.36, 1);
  transition-delay: var(--delay, 0ms);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1024px) {
  .container {
    width: min(100% - (var(--container-padding-tablet) * 2), var(--container-max));
  }

  .blog-card { grid-column: span 12; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .card-cover { aspect-ratio: 16 / 9; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bar { flex-direction: column; }
}

@media (max-width: 480px) {
  .container {
    width: min(100% - (var(--container-padding-mobile) * 2), var(--container-max));
  }

  .page-intro h1 { max-width: 100%; }
  .card-content { padding-inline: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
}