/* ============================================
   CHRONOS GHOST THEME - DESIGN SYSTEM
   Matching the landing page at chronosapp.net
   ============================================ */

:root {
  /* Core Palette - Light Theme */
  --background: #FFFFFF;
  --foreground: #1C1917;

  /* Cards & Surfaces */
  --card: #FFFFFF;
  --card-hover: #FAFAF9;
  --surface: #F5F5F4;
  --surface-elevated: #FFFFFF;

  /* Text Colors */
  --text-primary: #1C1917;
  --text-secondary: #78716C;
  --text-muted: #A8A29E;

  /* Borders */
  --border: #E7E5E4;
  --border-strong: #D6D3D1;

  /* Primary Blue */
  --primary: #4B8FD9;
  --primary-hover: #3B7BC0;
  --primary-glow: rgba(75, 143, 217, 0.12);
  --primary-foreground: #FFFFFF;

  /* Grid Lines */
  --grid-line: rgba(28, 25, 23, 0.04);
  --grid-line-hover: rgba(28, 25, 23, 0.08);

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 48px;
  --space-2xl: 80px;
  --space-3xl: 120px;
}

/* ============================================
   RESET & BASE
   ============================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--background);
  color: var(--foreground);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Subtle noise texture overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  opacity: 0.02;
  pointer-events: none;
  z-index: 9999;
}

a {
  color: inherit;
  text-decoration: none;
}

::selection {
  background: var(--primary);
  color: var(--primary-foreground);
}

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

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

/* ============================================
   LAYOUT
   ============================================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container--narrow {
  max-width: 740px;
}

.site-main {
  min-height: calc(100vh - 300px);
  padding-top: 80px;
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-lg) 0;
  transition: background 0.3s ease, backdrop-filter 0.3s ease, box-shadow 0.3s ease;
}

.nav.scrolled {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav__logo-icon {
  width: 36px;
  height: 36px;
  background: var(--primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.nav__logo-icon svg {
  width: 22px;
  height: 22px;
  fill: white;
}

.nav__logo:hover .nav__logo-icon {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(75, 143, 217, 0.3);
}

.nav__logo-text {
  font-family: 'Cormorant Garamond', serif;
  font-size: 22px;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--text-primary);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav__link {
  font-size: 13px;
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: color 0.3s ease;
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--primary);
  transition: width 0.3s ease;
}

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

.nav__link:hover::after {
  width: 100%;
}

.nav__cta {
  padding: var(--space-sm) var(--space-lg);
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: all 0.3s ease;
  cursor: pointer;
}

.nav__cta:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--primary-foreground);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
  font-family: 'Outfit', sans-serif;
}

.btn--primary {
  background: var(--primary);
  color: var(--primary-foreground);
}

.btn--primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 20px 40px rgba(75, 143, 217, 0.25);
}

.btn--outline {
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
}

.btn--outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-glow);
}

.btn svg {
  width: 18px;
  height: 18px;
}

/* ============================================
   BLOG HERO
   ============================================ */
.blog-hero {
  padding: var(--space-3xl) 0 var(--space-2xl);
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.blog-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: var(--space-lg);
}

.blog-hero__title {
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1.1;
  margin-bottom: var(--space-md);
}

.blog-hero__description {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ============================================
   POSTS SECTION
   ============================================ */
.posts-section {
  padding: var(--space-2xl) 0;
}

.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-lg);
}

/* ============================================
   POST CARD
   ============================================ */
.post-card {
  background: var(--card);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all 0.4s ease;
}

.post-card:hover {
  border-color: var(--border-strong);
  box-shadow: 0 8px 32px rgba(28, 25, 23, 0.08);
  transform: translateY(-4px);
}

.post-card__image-link {
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.post-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.post-card:hover .post-card__image {
  transform: scale(1.05);
}

.post-card__content {
  padding: var(--space-lg);
}

.post-card__tag {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-glow);
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: var(--space-sm);
}

.post-card__title {
  font-size: 24px;
  line-height: 1.3;
  margin-bottom: var(--space-sm);
}

.post-card__title a {
  transition: color 0.3s ease;
}

.post-card__title a:hover {
  color: var(--primary);
}

.post-card__excerpt {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.post-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: 13px;
  color: var(--text-muted);
}

.post-card__date {
  color: var(--text-muted);
}

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

/* ============================================
   SINGLE POST
   ============================================ */
.post__header {
  padding: var(--space-2xl) 0 var(--space-xl);
  text-align: center;
}

.post__back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  transition: color 0.3s ease;
}

.post__back:hover {
  color: var(--primary);
}

.post__tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-glow);
  padding: 6px 12px;
  border-radius: 4px;
  margin-bottom: var(--space-md);
}

.post__title {
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.15;
  margin-bottom: var(--space-lg);
}

.post__meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-size: 14px;
  color: var(--text-secondary);
  flex-wrap: wrap;
}

.post__meta-divider {
  color: var(--text-muted);
}

.post__feature-image {
  margin: 0 auto var(--space-xl);
  max-width: 1000px;
}

.post__feature-image img {
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
}

.post__feature-image figcaption {
  text-align: center;
  font-size: 14px;
  color: var(--text-muted);
  margin-top: var(--space-sm);
}

/* Post Content */
.post__content {
  font-size: 18px;
  line-height: 1.8;
  color: var(--text-primary);
}

.post__content h2 {
  font-size: 32px;
  margin: var(--space-xl) 0 var(--space-md);
}

.post__content h3 {
  font-size: 26px;
  margin: var(--space-lg) 0 var(--space-md);
}

.post__content h4 {
  font-size: 22px;
  margin: var(--space-lg) 0 var(--space-sm);
}

.post__content p {
  margin-bottom: var(--space-md);
}

.post__content a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.post__content a:hover {
  color: var(--primary-hover);
}

.post__content ul,
.post__content ol {
  margin: var(--space-md) 0;
  padding-left: var(--space-lg);
}

.post__content li {
  margin-bottom: var(--space-sm);
}

.post__content blockquote {
  margin: var(--space-lg) 0;
  padding: var(--space-md) var(--space-lg);
  border-left: 4px solid var(--primary);
  background: var(--surface);
  font-style: italic;
  color: var(--text-secondary);
}

.post__content pre {
  margin: var(--space-lg) 0;
  padding: var(--space-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.6;
}

.post__content code {
  font-family: 'SF Mono', Monaco, 'Consolas', monospace;
  font-size: 0.9em;
  background: var(--surface);
  padding: 2px 6px;
  border-radius: 4px;
}

.post__content pre code {
  background: transparent;
  padding: 0;
}

.post__content img {
  margin: var(--space-lg) 0;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.post__content figure {
  margin: var(--space-lg) 0;
}

.post__content figcaption {
  text-align: center;
  font-size: 14px;
  color: var(--text-muted);
  margin-top: var(--space-sm);
}

.post__content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: var(--space-xl) 0;
}

/* Ghost card styles */
/* Ghost card widths - required by Ghost */
.kg-width-wide {
  position: relative;
  width: 85vw;
  left: 50%;
  transform: translateX(-50%);
  max-width: 1100px;
}

.kg-width-full {
  position: relative;
  width: 100vw;
  left: 50%;
  transform: translateX(-50%);
}

.post__content .kg-card {
  margin: var(--space-lg) 0;
}

.post__content .kg-image-card img,
.post__content .kg-gallery-image img {
  border: 1px solid var(--border);
  border-radius: 8px;
}

.post__content .kg-bookmark-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.post__content .kg-bookmark-container {
  display: flex;
  text-decoration: none;
  color: inherit;
}

.post__content .kg-bookmark-content {
  padding: var(--space-md);
  flex: 1;
}

.post__content .kg-bookmark-title {
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.post__content .kg-bookmark-description {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.post__content .kg-bookmark-metadata {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 13px;
  color: var(--text-muted);
}

.post__content .kg-bookmark-icon {
  width: 20px;
  height: 20px;
}

.post__content .kg-bookmark-thumbnail {
  width: 160px;
  flex-shrink: 0;
}

.post__content .kg-bookmark-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border: none;
  border-radius: 0;
}

/* Post Tags */
.post__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
}

.post__tag-link {
  font-size: 13px;
  color: var(--text-secondary);
  background: var(--surface);
  padding: var(--space-xs) var(--space-md);
  border-radius: 4px;
  transition: all 0.3s ease;
}

.post__tag-link:hover {
  color: var(--primary);
  background: var(--primary-glow);
}

/* ============================================
   POST CTA SECTION
   ============================================ */
.post-cta {
  padding: var(--space-2xl) 0;
}

.post-cta__card {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: var(--space-xl);
  text-align: center;
}

.post-cta__title {
  font-size: 32px;
  margin-bottom: var(--space-sm);
}

.post-cta__text {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 480px;
  margin: 0 auto var(--space-lg);
  line-height: 1.7;
}

/* ============================================
   PAGE TEMPLATE
   ============================================ */
.page__header {
  padding: var(--space-3xl) 0 var(--space-xl);
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.page__title {
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.15;
}

.page__feature-image {
  margin: var(--space-xl) auto;
  max-width: 1000px;
}

.page__feature-image img {
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
}

.page__excerpt {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: var(--space-md) auto 0;
  line-height: 1.7;
  text-align: center;
}

.page__content {
  padding: var(--space-2xl) 0;
  font-size: 18px;
  line-height: 1.8;
}

.page__content h2 {
  font-size: 32px;
  margin: var(--space-xl) 0 var(--space-md);
}

.page__content h3 {
  font-size: 26px;
  margin: var(--space-lg) 0 var(--space-md);
}

.page__content p {
  margin-bottom: var(--space-md);
}

.page__content a {
  color: var(--primary);
  text-decoration: underline;
}

.page__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
}

.page__tag-link {
  font-size: 13px;
  color: var(--text-secondary);
  background: var(--surface);
  padding: var(--space-xs) var(--space-md);
  border-radius: 4px;
  transition: all 0.3s ease;
}

.page__tag-link:hover {
  color: var(--primary);
  background: var(--primary-glow);
}

/* ============================================
   ARCHIVE HEADER (Tag/Author)
   ============================================ */
.archive-header {
  padding: var(--space-3xl) 0 var(--space-xl);
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.archive-header__label {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: var(--space-md);
}

.archive-header__title {
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.15;
  margin-bottom: var(--space-md);
}

.archive-header__description {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-md);
  line-height: 1.7;
}

.archive-header__count {
  font-size: 14px;
  color: var(--text-muted);
}

.archive-header__avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin-bottom: var(--space-md);
  border: 2px solid var(--border);
}

.archive-header__link {
  display: inline-block;
  font-size: 14px;
  color: var(--primary);
  margin-top: var(--space-sm);
}

/* ============================================
   PAGINATION
   ============================================ */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
}

.pagination__link {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 14px;
  color: var(--text-secondary);
  transition: color 0.3s ease;
}

.pagination__link:hover {
  color: var(--primary);
}

.pagination__page {
  font-size: 14px;
  color: var(--text-muted);
}

/* ============================================
   ERROR PAGE
   ============================================ */
.error-page {
  padding: var(--space-3xl) 0;
  text-align: center;
  min-height: 60vh;
  display: flex;
  align-items: center;
}

.error-page__content {
  width: 100%;
}

.error-page__code {
  display: block;
  font-family: 'Cormorant Garamond', serif;
  font-size: 120px;
  font-weight: 400;
  color: var(--border);
  line-height: 1;
  margin-bottom: var(--space-md);
}

.error-page__title {
  font-size: 36px;
  margin-bottom: var(--space-md);
}

.error-page__text {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 480px;
  margin: 0 auto var(--space-xl);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: var(--space-2xl) 0 var(--space-xl);
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: var(--space-2xl);
}

.footer__brand-text {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.8;
  max-width: 300px;
  margin-top: var(--space-md);
}

.footer__column-title {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
}

.footer__links {
  list-style: none;
}

.footer__link {
  display: block;
  padding: var(--space-xs) 0;
  color: var(--text-secondary);
  font-size: 14px;
  transition: color 0.3s ease;
}

.footer__link:hover {
  color: var(--text-primary);
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
}

.footer__copy {
  color: var(--text-muted);
  font-size: 13px;
}

.footer__legal {
  display: flex;
  gap: var(--space-lg);
}

.footer__legal a {
  color: var(--text-muted);
  font-size: 13px;
  transition: color 0.3s ease;
}

.footer__legal a:hover {
  color: var(--text-primary);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .posts-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav__links {
    display: none;
  }

  .site-main {
    padding-top: 60px;
  }

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

  .blog-hero__title {
    font-size: 36px;
  }

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

  .post__header {
    padding: var(--space-xl) 0 var(--space-lg);
  }

  .post__title {
    font-size: 28px;
  }

  .post__content {
    font-size: 16px;
  }

  .post__content h2 {
    font-size: 26px;
  }

  .post__content h3 {
    font-size: 22px;
  }

  .footer__inner {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    text-align: center;
  }

  .footer__brand-text {
    max-width: none;
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-md);
  }

  .archive-header {
    padding: var(--space-2xl) 0 var(--space-xl);
  }

  .archive-header__title {
    font-size: 32px;
  }

  .pagination {
    flex-wrap: wrap;
    gap: var(--space-md);
  }

  .error-page__code {
    font-size: 80px;
  }

  .error-page__title {
    font-size: 28px;
  }

  .post-cta__card {
    padding: var(--space-lg);
  }

  .post-cta__title {
    font-size: 26px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-md);
  }

  .blog-hero__title {
    font-size: 28px;
  }

  .blog-hero__description {
    font-size: 15px;
  }

  .post-card__content {
    padding: var(--space-md);
  }

  .post-card__title {
    font-size: 20px;
  }

  .post__title {
    font-size: 24px;
  }

  .page__title {
    font-size: 28px;
  }

  .btn {
    padding: var(--space-sm) var(--space-lg);
    font-size: 12px;
  }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.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;
}