/* =============================================================
   Plan Erde — Ghost Theme
   Personal blog by Dirk Röthig
   Wissenschaft. Kapital. Zukunft.
   ============================================================= */

/* ---------- CSS Custom Properties ---------- */
:root {
  --color-primary:    #1a3a2e;
  --color-secondary:  #c8a04a;
  --color-bg:         #0f1a14;
  --color-bg-card:    #152218;
  --color-bg-code:    #0a1209;
  --color-text:       #e8e8e8;
  --color-text-muted: #a0b0a8;
  --color-accent:     #4ade80;
  --color-border:     #2a4a3a;
  --color-shadow:     rgba(0, 0, 0, 0.5);

  --font-sans: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-serif: 'Georgia', 'Times New Roman', serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  --max-width: 760px;
  --max-width-wide: 1100px;

  --transition: 0.2s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition);
}

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

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text);
}

h1 { font-size: clamp(1.8rem, 5vw, 2.8rem); }
h2 { font-size: clamp(1.4rem, 3.5vw, 2rem); }
h3 { font-size: clamp(1.15rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.1rem; }

p {
  margin-bottom: 1.2em;
  color: var(--color-text);
}

blockquote {
  border-left: 4px solid var(--color-secondary);
  padding: 0.75rem 1.5rem;
  margin: 2rem 0;
  background: var(--color-bg-card);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--color-text-muted);
}

blockquote p:last-child {
  margin-bottom: 0;
}

code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-bg-code);
  color: var(--color-accent);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

pre {
  background: var(--color-bg-code);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  overflow-x: auto;
  margin: 2rem 0;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.875rem;
}

hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 3rem 0;
}

ul, ol {
  padding-left: 1.5rem;
  margin-bottom: 1.2em;
}

li {
  margin-bottom: 0.4em;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-size: 0.95rem;
}

th {
  background: var(--color-primary);
  color: var(--color-secondary);
  padding: 0.75rem 1rem;
  text-align: left;
  font-weight: 600;
}

td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--color-border);
}

tr:nth-child(even) td {
  background: rgba(255,255,255,0.02);
}

/* ---------- Layout Utilities ---------- */
.container {
  width: 100%;
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-narrow {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

main {
  flex: 1;
}

/* ---------- Header / Navigation ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 26, 20, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  padding: 0.75rem 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--color-text);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.site-logo:hover {
  color: var(--color-accent);
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  border: 2px solid var(--color-secondary);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  color: var(--color-secondary);
  font-weight: 900;
  flex-shrink: 0;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* Hamburger */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
  color: var(--color-text);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: currentColor;
  margin: 5px 0;
  transition: var(--transition);
}

/* ---------- Language Switcher ---------- */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin-left: 1rem;
}

.lang-switcher a {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  padding: 0.2rem 0.45rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all var(--transition);
}

.lang-switcher a:hover,
.lang-switcher a.active {
  color: var(--color-secondary);
  border-color: var(--color-secondary);
  background: rgba(200, 160, 74, 0.1);
}

/* ---------- Hero / Cover ---------- */
.site-hero {
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-primary) 100%);
  padding: 5rem 1.5rem 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.site-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%234ade80' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E") repeat;
  pointer-events: none;
}

.site-hero-content {
  position: relative;
  max-width: 680px;
  margin: 0 auto;
}

.site-hero .blog-title {
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--color-text) 0%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.site-hero .blog-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 500px;
  margin: 0 auto 1.5rem;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(200, 160, 74, 0.12);
  border: 1px solid rgba(200, 160, 74, 0.3);
  color: var(--color-secondary);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.3rem 0.8rem;
  border-radius: 99px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

/* ---------- Post Cards Grid ---------- */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.75rem;
  padding: 3rem 0;
}

.post-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.post-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px var(--color-shadow);
  border-color: var(--color-primary);
}

.post-card-image {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--color-primary);
}

.post-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.post-card:hover .post-card-image img {
  transform: scale(1.04);
}

.post-card-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  background: linear-gradient(135deg, var(--color-primary), #0a2018);
}

.post-card-content {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.post-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
}

.tag-pill {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-secondary);
  background: rgba(200, 160, 74, 0.1);
  border: 1px solid rgba(200, 160, 74, 0.2);
  padding: 0.2rem 0.55rem;
  border-radius: 99px;
  transition: all var(--transition);
}

.tag-pill:hover {
  background: rgba(200, 160, 74, 0.2);
  color: var(--color-secondary);
}

.post-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.6rem;
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card-title a {
  color: inherit;
}

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

.post-card-excerpt {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 1rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.post-card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

.post-card-meta .reading-time::before {
  content: '·';
  margin-right: 0.4rem;
}

/* ---------- Featured Post (first card) ---------- */
.post-card.featured {
  grid-column: 1 / -1;
  flex-direction: row;
}

.post-card.featured .post-card-image {
  flex: 0 0 45%;
  aspect-ratio: unset;
  min-height: 280px;
}

.post-card.featured .post-card-content {
  padding: 2rem;
}

.post-card.featured .post-card-title {
  font-size: 1.5rem;
}

/* ---------- Single Post ---------- */
.post-header {
  padding: 4rem 1.5rem 3rem;
  text-align: center;
  background: linear-gradient(to bottom, var(--color-primary) 0%, transparent 100%);
}

.post-tags {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.post-title {
  font-size: clamp(1.75rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 1rem;
  line-height: 1.2;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.post-excerpt {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 1.5rem;
  line-height: 1.6;
}

.post-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  flex-wrap: wrap;
}

.post-meta-separator {
  color: var(--color-border);
}

.post-author-mini {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.author-avatar-sm {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--color-secondary);
}

.post-feature-image {
  width: 100%;
  max-width: 960px;
  margin: 0 auto 3rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.post-feature-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* ---------- Post Content ---------- */
.post-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
}

.post-content h2 {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  color: var(--color-text);
  border-left: 4px solid var(--color-secondary);
  padding-left: 1rem;
}

.post-content h3 {
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: var(--color-accent);
}

.post-content a {
  color: var(--color-secondary);
  text-decoration: underline;
  text-decoration-color: rgba(200, 160, 74, 0.4);
  text-underline-offset: 3px;
}

.post-content a:hover {
  color: var(--color-accent);
  text-decoration-color: var(--color-accent);
}

.post-content img {
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  margin: 2rem auto;
}

.post-content figcaption {
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 0.5rem;
  font-style: italic;
}

/* Ghost card styles */
.kg-card {
  margin: 2rem 0;
}

.kg-image-card img {
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.kg-gallery-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.5rem;
}

.kg-gallery-image img {
  border-radius: var(--radius-sm);
}

.kg-callout-card {
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.kg-callout-emoji {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.kg-toggle-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-card);
  overflow: hidden;
}

.kg-toggle-heading {
  padding: 1rem 1.25rem;
  cursor: pointer;
  font-weight: 600;
}

.kg-video-card {
  border-radius: var(--radius-md);
  overflow: hidden;
}

/* ---------- Share & Navigation ---------- */
.post-footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
}

.post-share {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.share-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.share-btn:hover {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
  background: rgba(200, 160, 74, 0.08);
}

.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 2rem;
}

.post-nav-link {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  transition: border-color var(--transition);
}

.post-nav-link:hover {
  border-color: var(--color-secondary);
}

.post-nav-link .nav-direction {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: 0.4rem;
}

.post-nav-link .nav-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-nav-link.next-post {
  text-align: right;
}

/* ---------- Author Box ---------- */
.author-box {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin: 3rem 0;
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.author-box-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--color-secondary);
  flex-shrink: 0;
}

.author-box-avatar-placeholder {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 3px solid var(--color-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  flex-shrink: 0;
}

.author-box-info {
  flex: 1;
}

.author-box-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.2rem;
}

.author-box-role {
  font-size: 0.85rem;
  color: var(--color-secondary);
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.author-box-bio {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 0.75rem;
}

.author-box-links {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.author-box-link {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.author-box-link:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

/* ---------- Author Page ---------- */
.author-page-header {
  text-align: center;
  padding: 4rem 1.5rem 3rem;
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-primary) 100%);
}

.author-page-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--color-secondary);
  margin: 0 auto 1.5rem;
  display: block;
}

.author-page-avatar-placeholder {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 4px solid var(--color-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  margin: 0 auto 1.5rem;
}

.author-page-name {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.author-page-role {
  color: var(--color-secondary);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 1rem;
}

.author-page-bio {
  max-width: 560px;
  margin: 0 auto 1.5rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.author-social-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  color: var(--color-text-muted);
  font-size: 0.8rem;
  font-weight: 500;
  transition: all var(--transition);
}

.social-link:hover {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
  background: rgba(200, 160, 74, 0.08);
}

/* ---------- Tag Page ---------- */
.tag-header {
  text-align: center;
  padding: 4rem 1.5rem 3rem;
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-primary) 100%);
}

.tag-header .tag-name {
  font-size: clamp(1.8rem, 5vw, 3rem);
  font-weight: 800;
  margin-bottom: 0.75rem;
}

.tag-header .tag-description {
  max-width: 500px;
  margin: 0 auto;
  color: var(--color-text-muted);
}

.tag-count {
  font-size: 0.85rem;
  color: var(--color-secondary);
  margin-bottom: 0.5rem;
  font-weight: 500;
}

/* ---------- Pagination ---------- */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  padding: 2rem 0 4rem;
}

.pagination-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.25rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
}

.pagination-btn:hover {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
}

.pagination-info {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-bg-card);
  border-top: 1px solid var(--color-border);
  padding: 3rem 0 2rem;
  margin-top: auto;
}

.footer-inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 2.5rem;
}

.footer-brand .site-logo {
  margin-bottom: 0.75rem;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 0;
}

.footer-col h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-secondary);
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

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

.footer-bottom {
  max-width: var(--max-width-wide);
  margin: 2rem auto 0;
  padding: 1.5rem 1.5rem 0;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 0;
}

.footer-bottom a {
  color: var(--color-secondary);
}

/* ---------- Page (static) ---------- */
.page-header {
  padding: 4rem 1.5rem 2rem;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 3rem;
}

.page-title {
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  font-weight: 800;
}

.page-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
}

/* ---------- Scroll to top ---------- */
.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--color-primary);
  border: 2px solid var(--color-secondary);
  color: var(--color-secondary);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity var(--transition), transform var(--transition);
  font-size: 1.1rem;
  z-index: 99;
}

.scroll-top.visible {
  opacity: 1;
  transform: translateY(0);
}

.scroll-top:hover {
  background: var(--color-secondary);
  color: var(--color-bg);
}

/* ---------- Reading Progress Bar ---------- */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(to right, var(--color-secondary), var(--color-accent));
  z-index: 999;
  width: 0%;
  transition: width 0.1s linear;
}

/* ---------- Table of Contents ---------- */
.toc-wrapper {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
}

.toc-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-secondary);
  margin-bottom: 0.75rem;
}

.toc-list {
  list-style: none;
  padding: 0;
}

.toc-list li {
  margin-bottom: 0.35rem;
}

.toc-list a {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

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

/* ---------- Stats Strip ---------- */
.stats-strip {
  background: var(--color-primary);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 1.5rem;
  display: flex;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
}

.stat-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-secondary);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ---------- Search ---------- */
.search-wrapper {
  position: relative;
}

#ghost-search-field {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  border-radius: var(--radius-sm);
  padding: 0.5rem 2.5rem 0.5rem 0.85rem;
  font-size: 0.875rem;
  width: 180px;
  transition: border-color var(--transition), width var(--transition);
  outline: none;
}

#ghost-search-field:focus {
  border-color: var(--color-accent);
  width: 220px;
}

#ghost-search-field::placeholder {
  color: var(--color-text-muted);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .site-nav-wrapper {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg-card);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 1.5rem;
    flex-direction: column;
    gap: 0;
  }

  .site-nav-wrapper.open {
    display: flex;
  }

  .site-nav {
    flex-direction: column;
    gap: 0;
    width: 100%;
  }

  .site-nav a {
    display: block;
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--color-border);
  }

  .lang-switcher {
    margin-left: 0;
    margin-top: 0.75rem;
  }

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

  .post-card.featured {
    flex-direction: column;
  }

  .post-card.featured .post-card-image {
    flex: unset;
    aspect-ratio: 16/9;
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .author-box {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .author-box-links {
    justify-content: center;
  }

  .post-nav {
    grid-template-columns: 1fr;
  }

  .post-nav-link.next-post {
    text-align: left;
  }

  .stats-strip {
    gap: 1.5rem;
  }
}

@media (max-width: 480px) {
  .container,
  .container-narrow {
    padding: 0 1rem;
  }

  .post-header {
    padding: 2.5rem 1rem 2rem;
  }

  .author-page-header {
    padding: 2.5rem 1rem 2rem;
  }
}

/* ---------- Print ---------- */
@media print {
  .site-header,
  .site-footer,
  .post-share,
  .post-nav,
  .scroll-top,
  .progress-bar,
  .lang-switcher {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .post-content {
    max-width: 100%;
  }
}

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

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

/* ---------- Animations ---------- */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-up {
  animation: fadeUp 0.45s ease both;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }