/* ============================================
   Theme Variables
   ============================================ */

:root[data-theme="light"] {
  --bg: #F7F3EA;
  --text: #111111;
  --muted: #4B4B4B;
  --border: #E6E0D6;
  --link: #2F6FED;
  --linkHover: #2459BD;
  --cardBg: #FBF8F2;
  --shadow: rgba(17, 17, 17, 0.06);
}

:root[data-theme="dark"] {
  --bg: #0F0D0B;
  --text: #E9E1D6;
  --muted: #B7AEA2;
  --border: #2A241F;
  --link: #7AA2FF;
  --linkHover: #9BB9FF;
  --cardBg: #14110E;
  --shadow: rgba(0, 0, 0, 0.35);
}

/* ============================================
   Reset & Base Styles
   ============================================ */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  font-family: 'Newsreader', Georgia, 'Times New Roman', serif;
  font-size: 18px;
  line-height: 1.65;
  color: var(--text);
  background-color: var(--bg);
  transition: background-color 0.2s ease, color 0.2s ease;
  overflow-x: hidden;
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6,
.site-header,
.nav-link,
.theme-toggle {
  font-family: 'Satoshi', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

h1 {
  font-size: 40px;
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h2 {
  font-size: 24px;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 0.75rem;
}

h3 {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.4;
}

p {
  margin-bottom: 1.25rem;
}

@media (min-width: 768px) {
  h1 {
    font-size: 48px;
  }
}

/* ============================================
   Links
   ============================================ */

a {
  color: var(--link);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--linkHover);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

a:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
}

/* ============================================
   Layout
   ============================================ */

main {
  max-width: 750px;
  margin: 0 auto;
  padding: 2rem 24px;
}

@media (max-width: 640px) {
  main {
    padding: 1.5rem 20px;
  }
}

/* ============================================
   Header
   ============================================ */

.site-header {
  border-bottom: 1px solid var(--border);
  padding: 1rem 24px;
  position: sticky;
  top: 0;
  background-color: var(--bg);
  z-index: 100;
  transition: background-color 0.2s ease;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
}

.site-name:hover {
  color: var(--link);
  text-decoration: none;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-link {
  font-size: 16px;
  color: var(--text);
  text-decoration: none;
  transition: color 0.15s ease;
}

.nav-link:hover {
  color: var(--link);
  text-decoration: none;
}

/* ============================================
   Theme Toggle Button
   ============================================ */

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  transition: color 0.15s ease;
}

.theme-toggle:hover {
  color: var(--link);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
  border-radius: 4px;
}

.theme-icon {
  width: 20px;
  height: 20px;
}

/* Show/hide icons based on theme */
[data-theme="light"] .moon-icon {
  display: none;
}

[data-theme="dark"] .sun-icon {
  display: none;
}

/* ============================================
   Icon Links
   ============================================ */

.icon-links {
  display: flex;
  gap: 1.25rem;
  align-items: center;
  margin: 2rem 0;
}

.icon-link {
  color: var(--muted);
  transition: color 0.15s ease;
  display: inline-flex;
  align-items: center;
}

.icon-link:hover {
  color: var(--link);
  text-decoration: none;
}

.icon-link:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
  border-radius: 4px;
}

.icon-link .icon {
  width: 24px;
  height: 24px;
}

/* ============================================
   Home Page
   ============================================ */

.bio {
  margin: 2.5rem 0;
  font-size: 19px;
  line-height: 1.65;
}

.bio p {
  margin-bottom: 0.5rem;
}

.blog-section {
  margin: 3rem 0;
}

.blog-section h2 {
  margin-bottom: 1.5rem;
}

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

.post-item {
  margin-bottom: 1.25rem;
}

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

.post-title {
  font-size: 18px;
  color: var(--text);
  margin-bottom: 0.25rem;
}

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

.post-date {
  font-size: 15px;
  color: var(--muted);
  font-family: 'Satoshi', system-ui, sans-serif;
}

.view-all {
  display: inline-block;
  margin-top: 1rem;
  font-size: 16px;
  font-family: 'Satoshi', system-ui, sans-serif;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

.view-all:hover {
  color: var(--link);
  text-decoration: none;
}

.last-updated {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  font-size: 14px;
  color: var(--muted);
  font-family: 'Satoshi', system-ui, sans-serif;
}

.gallery-section {
  margin: 3rem 0;
}

.gallery-section h2 {
  margin-bottom: 1.5rem;
}

.home-gallery-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
}

@media (min-width: 480px) {
  .home-gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .home-gallery-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.home-gallery-link {
  display: block;
}

.home-gallery-image {
  width: 100%;
  display: block;
  border-radius: 2px;
  transition: opacity 0.2s ease;
}

.home-gallery-image:hover {
  opacity: 0.9;
}

/* ============================================
   Blog Post Page
   ============================================ */

.post {
  max-width: 750px;
  margin: 0 auto;
}

.back-button {
  display: inline-block;
  margin-bottom: 2rem;
  font-size: 16px;
  font-family: 'Satoshi', system-ui, sans-serif;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

.back-button:hover {
  color: var(--link);
  text-decoration: none;
}

.back-button:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
  border-radius: 4px;
}

.post-header {
  margin-bottom: 2.5rem;
}

.post-header h1 {
  margin-bottom: 0.5rem;
}

.post-header .post-date {
  display: block;
  color: var(--muted);
  font-size: 15px;
  font-family: 'Satoshi', system-ui, sans-serif;
}

.post-content {
  font-size: 18px;
  line-height: 1.65;
}

.post-content h2 {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

.post-content h3 {
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.post-content p {
  margin-bottom: 1.25rem;
}

.post-content ul,
.post-content ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

.post-content li {
  margin-bottom: 0.5rem;
}

.post-content code {
  background-color: var(--cardBg);
  padding: 0.2em 0.4em;
  border-radius: 3px;
  font-size: 0.9em;
}

.post-content pre {
  background-color: var(--cardBg);
  padding: 1rem;
  border-radius: 4px;
  overflow-x: auto;
  margin-bottom: 1.25rem;
}

.post-content pre code {
  background: none;
  padding: 0;
}

/* ============================================
   Gallery Page
   ============================================ */

.gallery-grid {
  /* Break out to full viewport, then center at max 1120px */
  width: 100vw;
  margin-left: calc(50% - 50vw);
  box-sizing: border-box;
  padding-left: max(24px, calc((100vw - 1120px) / 2));
  padding-right: max(24px, calc((100vw - 1120px) / 2));

  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
}

.gallery-image {
  width: 100%;
  display: block;
  cursor: pointer;
  transition: opacity 0.2s ease;
  border-radius: 2px;
}

.gallery-image:hover {
  opacity: 0.9;
}

.gallery-empty {
  text-align: center;
  color: var(--muted);
  font-size: 18px;
  margin-top: 3rem;
}

/* Gallery responsive grid */
@media (min-width: 768px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
  }
}

@media (min-width: 1024px) {
  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
  }
}

@media (max-width: 640px) {
  .gallery-grid {
    padding-left: 20px;
    padding-right: 20px;
  }
}

/* ============================================
   Lightbox
   ============================================ */

.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.95);
}

.lightbox-content {
  position: relative;
  z-index: 1001;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-content img {
  max-width: 100%;
  max-height: 90vh;
  object-fit: contain;
  border-radius: 2px;
}

.lightbox-close {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: white;
  font-size: 3rem;
  line-height: 1;
  cursor: pointer;
  z-index: 1002;
  padding: 0.5rem;
  opacity: 0.8;
  transition: opacity 0.2s ease;
}

.lightbox-close:hover {
  opacity: 1;
}

.lightbox-prev,
.lightbox-next {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: white;
  font-size: 3rem;
  line-height: 1;
  cursor: pointer;
  z-index: 1002;
  padding: 1rem 1.25rem;
  opacity: 0.8;
  transition: opacity 0.2s ease, background-color 0.2s ease;
  border-radius: 4px;
}

.lightbox-prev:hover,
.lightbox-next:hover {
  opacity: 1;
  background: rgba(255, 255, 255, 0.2);
}

.lightbox-prev {
  left: 1.5rem;
}

.lightbox-next {
  right: 1.5rem;
}

.lightbox-close:focus-visible,
.lightbox-prev:focus-visible,
.lightbox-next:focus-visible {
  outline: 2px solid white;
  outline-offset: 2px;
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 640px) {
  .site-header {
    padding: 0.875rem 20px;
  }

  .header-right {
    gap: 1rem;
  }

  .nav-link {
    font-size: 15px;
  }

  .site-name {
    font-size: 16px;
  }
}