/* Professor CV Theme - Clean Minimal Academic Design */

/* ========================================
   CSS Variables
   ======================================== */
:root {
  --color-text: #2d3748;
  --color-text-light: #718096;
  --color-heading: #1a202c;
  --color-link: #2b6cb0;
  --color-link-hover: #1a365d;
  --color-bg: #ffffff;
  --color-bg-alt: #f7fafc;
  --color-border: #e2e8f0;
  --color-accent: var(--ghost-accent-color, #1a365d);

  --font-body: Georgia, "Times New Roman", serif;
  --font-heading:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  --max-width: 800px;
  --header-height: auto;
}

/* ========================================
   Base Styles
   ======================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 18px;
  line-height: 1.7;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  color: var(--color-heading);
  font-weight: 600;
  line-height: 1.3;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: 2rem;
}
h2 {
  font-size: 1.5rem;
}
h3 {
  font-size: 1.25rem;
}

a {
  color: var(--color-link);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

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

/* ========================================
   Layout
   ======================================== */
.site-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-main {
  flex: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md);
}

/* ========================================
   Header
   ======================================== */
.site-header {
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-lg) var(--spacing-md);
}

.header-content {
  max-width: var(--max-width);
  margin: 0 auto;
}

.header-info {
  margin-bottom: var(--spacing-md);
}

.site-title {
  font-size: 1.75rem;
  margin: 0;
}

.site-title a {
  color: var(--color-heading);
}

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

.site-subtitle {
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--color-text-light);
  margin: var(--spacing-xs) 0 0;
}

.site-institution {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin: 0;
}

/* Navigation */
.site-nav {
  margin-top: var(--spacing-md);
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs) var(--spacing-md);
}

.nav-list a {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  color: var(--color-text);
  padding: var(--spacing-xs) 0;
  border-bottom: 2px solid transparent;
}

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

/* ========================================
   Footer
   ======================================== */
.site-footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-lg) var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
  text-align: center;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  color: var(--color-text-light);
}

.footer-content p {
  margin: var(--spacing-xs) 0;
}

/* ========================================
   Homepage
   ======================================== */
.home-container {
  padding-top: var(--spacing-md);
}

.hero {
  display: flex;
  gap: var(--spacing-lg);
  align-items: flex-start;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
}

.hero-image {
  flex-shrink: 0;
}

.hero-image img {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
}

.hero-content h2 {
  margin-top: 0;
}

.hero-description {
  font-size: 1.1rem;
}

.home-section {
  margin-bottom: var(--spacing-xl);
}

.home-section h2 {
  margin-top: 0;
  padding-bottom: var(--spacing-xs);
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

/* Publication and Post Lists */
.publication-list,
.post-list {
  list-style: none;
  padding: 0;
  margin: var(--spacing-md) 0;
}

.publication-item,
.post-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: var(--spacing-xs) 0;
  border-bottom: 1px solid var(--color-border);
}

.publication-date,
.post-date {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  color: var(--color-text-light);
  flex-shrink: 0;
  margin-left: var(--spacing-sm);
}

.view-all {
  font-family: var(--font-heading);
  font-size: 0.9rem;
}

.empty-message {
  color: var(--color-text-light);
  font-style: italic;
}

/* Quick Links Grid */
.quick-links {
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
}

.link-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.link-card {
  display: block;
  padding: var(--spacing-md);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

.link-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.link-card h3 {
  font-size: 1rem;
  margin: 0 0 var(--spacing-xs);
  color: var(--color-heading);
}

.link-card p {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin: 0;
}

/* ========================================
   Pages
   ======================================== */
.page-header {
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--color-accent);
}

.page-title {
  margin: 0;
}

.page-content {
  line-height: 1.8;
}

/* About Page */
.about-layout {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--spacing-xl);
}

.about-sidebar {
  position: sticky;
  top: var(--spacing-lg);
}

.profile-photo {
  width: 100%;
  border-radius: 4px;
  margin-bottom: var(--spacing-md);
}

.contact-info h3 {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-light);
  margin-top: var(--spacing-md);
}

/* ========================================
   Posts
   ======================================== */
.post-header {
  margin-bottom: var(--spacing-lg);
}

.post-title {
  margin-bottom: var(--spacing-sm);
}

.post-meta {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  color: var(--color-text-light);
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

.post-tag {
  background: var(--color-bg-alt);
  padding: 0.2em 0.6em;
  border-radius: 3px;
  font-size: 0.8rem;
}

.post-image {
  margin: var(--spacing-lg) 0;
}

.post-image img {
  border-radius: 4px;
}

.post-image figcaption {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  color: var(--color-text-light);
  text-align: center;
  margin-top: var(--spacing-xs);
}

.post-content {
  line-height: 1.8;
}

.post-footer {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

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

.post-tags .tag {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  background: var(--color-bg-alt);
  padding: 0.3em 0.8em;
  border-radius: 3px;
  color: var(--color-text-light);
}

.post-tags .tag:hover {
  color: var(--color-accent);
}

/* Post Navigation */
.post-navigation {
  display: flex;
  justify-content: space-between;
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
}

.nav-prev,
.nav-next {
  max-width: 45%;
}

.nav-label {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-xs);
}

.nav-title {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.9rem;
}

.nav-next {
  text-align: right;
  margin-left: auto;
}

/* ========================================
   Collection Pages (Publications, Blog)
   ======================================== */
.collection-header {
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--color-accent);
}

.collection-title {
  margin: 0 0 var(--spacing-xs);
}

.collection-description {
  font-family: var(--font-heading);
  color: var(--color-text-light);
  margin: 0;
}

/* Publications List */
.publications-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.publication-card {
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--color-border);
}

.publication-title {
  font-size: 1.1rem;
  margin: 0 0 var(--spacing-xs);
}

.publication-excerpt {
  font-size: 0.95rem;
  color: var(--color-text-light);
  margin: 0 0 var(--spacing-xs);
}

.publication-meta {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  color: var(--color-text-light);
  display: flex;
  gap: var(--spacing-sm);
}

.publication-venue {
  background: var(--color-bg-alt);
  padding: 0.1em 0.5em;
  border-radius: 3px;
}

/* Blog List */
.blog-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.blog-card {
  display: flex;
  gap: var(--spacing-md);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
}

.blog-image {
  flex-shrink: 0;
  width: 150px;
}

.blog-image img {
  border-radius: 4px;
  aspect-ratio: 3/2;
  object-fit: cover;
}

.blog-title {
  font-size: 1.1rem;
  margin: 0 0 var(--spacing-xs);
}

.blog-excerpt {
  font-size: 0.95rem;
  color: var(--color-text-light);
  margin: 0 0 var(--spacing-xs);
}

.blog-meta {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  color: var(--color-text-light);
  display: flex;
  gap: var(--spacing-sm);
}

.blog-tag {
  background: var(--color-bg-alt);
  padding: 0.1em 0.5em;
  border-radius: 3px;
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
  font-family: var(--font-heading);
  font-size: 0.9rem;
}

.pagination-info {
  color: var(--color-text-light);
}

/* ========================================
   Error Pages
   ======================================== */
.error-page {
  text-align: center;
  padding: var(--spacing-xl) 0;
}

.error-code {
  font-size: 6rem;
  color: var(--color-border);
  margin: 0;
}

.error-message {
  font-size: 1.25rem;
  color: var(--color-text-light);
  margin: var(--spacing-md) 0 var(--spacing-lg);
}

.error-link {
  font-family: var(--font-heading);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
  html {
    font-size: 16px;
  }

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

  .about-layout {
    grid-template-columns: 1fr;
  }

  .about-sidebar {
    position: static;
    text-align: center;
  }

  .profile-photo {
    max-width: 200px;
    margin: 0 auto var(--spacing-md);
  }

  .blog-card {
    flex-direction: column;
  }

  .blog-image {
    width: 100%;
  }

  .publication-item,
  .post-item {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-xs);
  }

  .publication-date,
  .post-date {
    margin-left: 0;
  }
}

/* ========================================
   Content Styling (Ghost Editor Content)
   ======================================== */
.post-content blockquote,
.page-content blockquote {
  border-left: 3px solid var(--color-accent);
  margin: var(--spacing-md) 0;
  padding-left: var(--spacing-md);
  font-style: italic;
  color: var(--color-text-light);
}

.post-content pre,
.page-content pre {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: var(--spacing-md);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.post-content code,
.page-content code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--color-bg-alt);
  padding: 0.1em 0.3em;
  border-radius: 3px;
}

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

.post-content table,
.page-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-md) 0;
}

.post-content th,
.post-content td,
.page-content th,
.page-content td {
  border: 1px solid var(--color-border);
  padding: var(--spacing-xs) var(--spacing-sm);
  text-align: left;
}

.post-content th,
.page-content th {
  background: var(--color-bg-alt);
  font-family: var(--font-heading);
  font-weight: 600;
}

.post-content ul,
.post-content ol,
.page-content ul,
.page-content ol {
  padding-left: var(--spacing-lg);
}

.post-content li,
.page-content li {
  margin-bottom: var(--spacing-xs);
}

/* ========================================
   Ghost Editor Card Widths (Required)
   ======================================== */
.kg-width-wide {
  position: relative;
  width: 85vw;
  min-width: 100%;
  margin-left: calc(50% - 42.5vw);
  margin-right: calc(50% - 42.5vw);
}

.kg-width-full {
  position: relative;
  width: 100vw;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
}

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

/* Ghost Editor Cards */
.kg-image-card,
.kg-gallery-card,
.kg-embed-card,
.kg-code-card {
  margin: var(--spacing-lg) 0;
}

.kg-image-card img {
  margin: 0 auto;
}

.kg-image-card figcaption,
.kg-gallery-card figcaption,
.kg-embed-card figcaption {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  color: var(--color-text-light);
  text-align: center;
  margin-top: var(--spacing-xs);
}

/* Gallery Card */
.kg-gallery-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.kg-gallery-row {
  display: flex;
  gap: var(--spacing-sm);
}

.kg-gallery-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Bookmark Card */
.kg-bookmark-card {
  margin: var(--spacing-lg) 0;
}

.kg-bookmark-container {
  display: flex;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
}

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

.kg-bookmark-title {
  font-family: var(--font-heading);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.kg-bookmark-description {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-sm);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.kg-bookmark-metadata {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.8rem;
  color: var(--color-text-light);
}

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

.kg-bookmark-thumbnail {
  width: 200px;
  flex-shrink: 0;
}

.kg-bookmark-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Callout Card */
.kg-callout-card {
  display: flex;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  border-radius: 4px;
  margin: var(--spacing-lg) 0;
}

.kg-callout-card-grey {
  background: var(--color-bg-alt);
}

.kg-callout-emoji {
  font-size: 1.25rem;
}

/* Button Card */
.kg-button-card {
  margin: var(--spacing-lg) 0;
  text-align: center;
}

.kg-btn {
  display: inline-block;
  padding: 0.75em 1.5em;
  font-family: var(--font-heading);
  font-weight: 600;
  text-decoration: none;
  border-radius: 4px;
  transition: opacity 0.2s ease;
}

.kg-btn:hover {
  opacity: 0.85;
}

.kg-btn-accent {
  background: var(--color-accent);
  color: #fff;
}

/* Toggle Card */
.kg-toggle-card {
  margin: var(--spacing-lg) 0;
  border: 1px solid var(--color-border);
  border-radius: 4px;
}

.kg-toggle-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md);
  cursor: pointer;
  font-family: var(--font-heading);
  font-weight: 600;
}

.kg-toggle-content {
  padding: 0 var(--spacing-md) var(--spacing-md);
}

/* File Card */
.kg-file-card {
  margin: var(--spacing-lg) 0;
}

.kg-file-card-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: 4px;
}

.kg-file-card-contents {
  flex: 1;
}

.kg-file-card-title {
  font-family: var(--font-heading);
  font-weight: 600;
}

.kg-file-card-metadata {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

/* Audio Card */
.kg-audio-card {
  margin: var(--spacing-lg) 0;
}

/* Video Card */
.kg-video-card {
  margin: var(--spacing-lg) 0;
}

.kg-video-card video {
  width: 100%;
  border-radius: 4px;
}

/* Product Card */
.kg-product-card {
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: 4px;
}

/* Header Card */
.kg-header-card {
  margin: var(--spacing-xl) 0;
  padding: var(--spacing-xl);
  text-align: center;
}

.kg-header-card h2 {
  margin: 0 0 var(--spacing-sm);
}

/* Signup Card */
.kg-signup-card {
  margin: var(--spacing-xl) 0;
  padding: var(--spacing-xl);
  background: var(--color-bg-alt);
  border-radius: 4px;
  text-align: center;
}