/* ── Tokens ──────────────────────────────────────────────────────────────── */
:root {
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "Fira Code", monospace;
  --font-size-base: 1.125rem;
  --line-height-base: 1.75;
  --line-height-tight: 1.25;

  --color-bg:        #ffffff;
  --color-surface:   #f8f8f7;
  --color-border:    #e8e8e6;
  --color-text:      #1a1a18;
  --color-muted:     #6b6b65;
  --color-accent:    #2563eb;
  --color-accent-hover: #1d4ed8;

  --width-content: 42rem;
  --width-wide:    64rem;

  --space-xs: 0.5rem;
  --space-s:  1rem;
  --space-m:  1.5rem;
  --space-l:  2.5rem;
  --space-xl: 4rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg:      #111110;
    --color-surface: #1c1c1a;
    --color-border:  #2e2e2c;
    --color-text:    #eeede9;
    --color-muted:   #8b8b85;
    --color-accent:  #60a5fa;
    --color-accent-hover: #93c5fd;
  }
}

/* ── Reset ───────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 100%; scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img, video { max-width: 100%; height: auto; display: block; }

a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

a:hover { color: var(--color-accent-hover); }

/* ── Focus ───────────────────────────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ── Skip link ───────────────────────────────────────────────────────────── */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-s);
  padding: var(--space-xs) var(--space-s);
  background: var(--color-accent);
  color: #fff;
  font-weight: 600;
  border-radius: 0 0 4px 4px;
  z-index: 1000;
  text-decoration: none;
}
.skip-link:focus { top: 0; }

/* ── Layout ──────────────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--width-content);
  margin-inline: auto;
  padding-inline: var(--space-m);
  flex: 1;
}

/* ── Header ──────────────────────────────────────────────────────────────── */
.site-header {
  border-bottom: 1px solid var(--color-border);
  padding-block: var(--space-m);
  margin-bottom: var(--space-xl);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-m);
  flex-wrap: wrap;
}

.site-title {
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--color-text);
}

.site-nav {
  display: flex;
  gap: var(--space-m);
  flex-wrap: wrap;
}

.site-nav a {
  font-size: 0.9rem;
  text-decoration: none;
  color: var(--color-muted);
  transition: color 0.15s;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--color-text);
}

/* Ghost {{navigation}} outputs a <ul class="nav"> inside .site-nav */
.site-nav .nav {
  list-style: none;
  display: flex;
  gap: var(--space-m);
  flex-wrap: wrap;
  padding: 0;
  margin: 0;
}

.site-nav .nav li { display: inline; }

/* ── Footer ──────────────────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-l);
  margin-top: var(--space-xl);
  color: var(--color-muted);
  font-size: 0.875rem;
}

.site-footer .container {
  display: flex;
  justify-content: space-between;
  gap: var(--space-s);
  flex-wrap: wrap;
}

.site-footer a { color: var(--color-muted); }

/* ── Post feed ───────────────────────────────────────────────────────────── */
.post-feed {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.post-card {
  border-bottom: 1px solid var(--color-border);
  padding-block: var(--space-l);
}

.post-card:first-child { padding-top: 0; }

.post-card-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

.post-card-link:hover .post-card-title {
  color: var(--color-accent);
}

.post-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-s);
  font-size: 0.8125rem;
  color: var(--color-muted);
  margin-bottom: var(--space-xs);
}

.post-card-tag {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 1px var(--space-xs);
  font-size: 0.75rem;
}

.post-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: var(--line-height-tight);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
  transition: color 0.15s;
}

.post-card-excerpt {
  color: var(--color-muted);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* ── Single post ─────────────────────────────────────────────────────────── */
.post-header {
  margin-bottom: var(--space-l);
}

.post-meta {
  display: flex;
  align-items: center;
  gap: var(--space-s);
  font-size: 0.8125rem;
  color: var(--color-muted);
  margin-bottom: var(--space-s);
}

.post-tag {
  color: var(--color-accent);
  text-decoration: none;
  font-size: 0.8125rem;
}

.post-reading-time { color: var(--color-muted); }

.post-title {
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 800;
  line-height: var(--line-height-tight);
  letter-spacing: -0.03em;
  margin-bottom: var(--space-s);
}

.post-excerpt {
  font-size: 1.125rem;
  color: var(--color-muted);
  line-height: 1.6;
  border-left: 3px solid var(--color-border);
  padding-left: var(--space-s);
}

.post-feature-image {
  margin-block: var(--space-l);
  margin-inline: calc(var(--space-m) * -1);
}

.post-feature-image img {
  width: 100%;
  max-height: 60vh;
  object-fit: cover;
  border-radius: 4px;
}

.post-feature-image figcaption {
  font-size: 0.8125rem;
  color: var(--color-muted);
  text-align: center;
  margin-top: var(--space-xs);
}

/* ── Post content ────────────────────────────────────────────────────────── */
.post-content {
  max-width: 100%;
}

.post-content h2,
.post-content h3,
.post-content h4 {
  font-weight: 700;
  line-height: var(--line-height-tight);
  letter-spacing: -0.02em;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-s);
}

.post-content h2 { font-size: 1.5rem; }
.post-content h3 { font-size: 1.25rem; }
.post-content h4 { font-size: 1.125rem; }

.post-content p,
.post-content ul,
.post-content ol,
.post-content blockquote {
  margin-bottom: var(--space-m);
}

.post-content ul,
.post-content ol {
  padding-left: var(--space-m);
}

.post-content li + li { margin-top: var(--space-xs); }

.post-content blockquote {
  border-left: 3px solid var(--color-border);
  padding-left: var(--space-m);
  color: var(--color-muted);
  font-style: italic;
}

.post-content pre {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: var(--space-m);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  margin-bottom: var(--space-m);
}

.post-content code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 3px;
  padding: 1px 4px;
}

.post-content pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 1em;
}

.post-content img {
  border-radius: 4px;
  margin-block: var(--space-m);
}

.post-content figure { margin-block: var(--space-m); }

.post-content figcaption {
  font-size: 0.8125rem;
  color: var(--color-muted);
  text-align: center;
  margin-top: var(--space-xs);
}

.post-content hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin-block: var(--space-xl);
}

.post-content a { font-weight: 500; }

/* ── Post footer ─────────────────────────────────────────────────────────── */
.post-footer {
  margin-top: var(--space-xl);
  padding-top: var(--space-m);
  border-top: 1px solid var(--color-border);
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.tag-pill {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 2px var(--space-s);
  font-size: 0.8125rem;
  text-decoration: none;
  color: var(--color-muted);
  transition: border-color 0.15s, color 0.15s;
}

.tag-pill:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ── Post navigation ─────────────────────────────────────────────────────── */
.post-nav {
  margin-top: var(--space-l);
  padding-top: var(--space-l);
  border-top: 1px solid var(--color-border);
}

.post-nav-prev,
.post-nav-next {
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-decoration: none;
  color: var(--color-text);
}

.post-nav-prev span,
.post-nav-next span {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted);
}

.post-nav-prev strong,
.post-nav-next strong {
  font-size: 1rem;
  font-weight: 600;
}

.post-nav-prev:hover strong,
.post-nav-next:hover strong {
  color: var(--color-accent);
}

/* ── Photos page ─────────────────────────────────────────────────────────── */
.page-header {
  margin-bottom: var(--space-l);
}

.page-description {
  color: var(--color-muted);
  margin-top: var(--space-xs);
}

.photo-grid {
  --photo-min: 220px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(var(--photo-min), 1fr));
  gap: var(--space-s);
  margin-bottom: var(--space-xl);
  max-width: var(--width-wide);
}

.photo-item {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  background: var(--color-surface);
}

.photo-trigger {
  display: block;
  width: 100%;
  background: none;
  border: none;
  padding: 0;
  cursor: zoom-in;
  aspect-ratio: 4/3;
  overflow: hidden;
}

.photo-trigger img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease, opacity 0.2s;
}

.photo-trigger:hover img { transform: scale(1.03); }

.photo-item figcaption {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-xs) var(--space-s);
  font-size: 0.75rem;
  color: var(--color-muted);
}

.photo-item figcaption a {
  color: var(--color-muted);
  text-decoration: none;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.photo-item figcaption a:hover { color: var(--color-accent); }

.empty-state {
  color: var(--color-muted);
  font-size: 0.9375rem;
  padding-block: var(--space-l);
}

/* ── Lightbox ────────────────────────────────────────────────────────────── */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.92);
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-m);
}

.lightbox[hidden] { display: none; }

.lightbox-figure {
  max-width: 90vw;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-s);
}

.lightbox-img {
  max-width: 90vw;
  max-height: 80vh;
  object-fit: contain;
  border-radius: 4px;
}

.lightbox-caption {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.875rem;
  text-align: center;
}

.lightbox-close {
  position: absolute;
  top: var(--space-m);
  right: var(--space-m);
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.8);
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
  padding: var(--space-xs);
  border-radius: 4px;
  transition: color 0.15s;
}

.lightbox-close:hover { color: #fff; }

.lightbox-prev,
.lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--space-s);
  border-radius: 4px;
  transition: background 0.15s;
  line-height: 1;
}

.lightbox-prev { left: var(--space-m); }
.lightbox-next { right: var(--space-m); }
.lightbox-prev:hover,
.lightbox-next:hover { background: rgba(255, 255, 255, 0.2); }

/* ── Pagination ──────────────────────────────────────────────────────────── */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-m);
  margin-top: var(--space-xl);
  font-size: 0.875rem;
  color: var(--color-muted);
}

.pagination .older-posts,
.pagination .newer-posts {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 500;
}

.pagination .page-number {
  color: var(--color-muted);
  font-size: 0.875rem;
}

/* ── Tag page ────────────────────────────────────────────────────────────── */
.tag-header { margin-bottom: var(--space-l); }
.tag-description { color: var(--color-muted); margin-top: var(--space-xs); }

/* ── Error page ──────────────────────────────────────────────────────────── */
.error-page {
  padding-block: var(--space-xl);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: var(--space-m);
  align-items: center;
}

.error-page h1 {
  font-size: 6rem;
  font-weight: 800;
  color: var(--color-border);
  line-height: 1;
}

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .site-header { margin-bottom: var(--space-l); }
  .post-feature-image { margin-inline: calc(var(--space-m) * -1); }
  .photo-grid { --photo-min: 150px; gap: var(--space-xs); }
  .lightbox-prev { left: var(--space-xs); }
  .lightbox-next { right: var(--space-xs); }
}

/* ── Ghost editor card widths ────────────────────────────────────────────── */
.kg-width-wide {
  margin-inline: calc(var(--space-l) * -1);
}

.kg-width-full {
  margin-inline: calc(50% - 50vw);
}

.kg-width-wide img,
.kg-width-full img {
  width: 100%;
}

/* ── Reduced motion ──────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
  html { scroll-behavior: auto; }
}