:root {
  --color-bg: #ffffff;
  --color-bg-alt: #fafafa;
  --color-text: #2c2c2c;
  --color-text-muted: #666666;
  --color-accent: #f5d6d6;
  --color-accent-dark: #e8b4b4;
  --color-accent-light: #fdf5f5;
  --color-border: #eeeeee;
  
  --font-serif: 'Playfair Display', Georgia, Cambria, "Times New Roman", Times, serif;
  --font-sans: 'Montserrat', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  
  --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --max-width: 1200px;
}

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

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-weight: 300;
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.3;
  color: var(--color-text);
}

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

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

/* Base Layout Structure */
body > header {
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background-color: #ffffff;
  z-index: 1000;
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo a {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 500;
  letter-spacing: 0.05rem;
}

.logo .subtitle {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2rem;
  color: var(--color-text-muted);
  margin-top: 0.2rem;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 2.5rem;
}

nav a {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.15rem;
  font-weight: 400;
  padding-bottom: 0.3rem;
  border-bottom: 1px solid transparent;
}

nav a:hover, nav a.active {
  border-bottom: 1px solid var(--color-accent-dark);
}

main {
  min-height: calc(100vh - 200px);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 2rem;
}

/* Page Headers */
.page-title-section {
  text-align: center;
  margin-bottom: 2.5rem;
}

.page-title {
  font-size: 3rem;
  margin-bottom: 1rem;
  position: relative;
  display: inline-block;
  padding-bottom: 1rem;
}

.page-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 2px;
  background-color: var(--color-accent);
}

.page-subtitle {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.15rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.8rem 2rem;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.15rem;
  font-weight: 400;
  border: 1px solid var(--color-text);
  background: transparent;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn:hover {
  background-color: var(--color-text);
  color: var(--color-bg);
}

.btn-accent {
  background-color: var(--color-accent-light);
  border-color: var(--color-accent);
}

.btn-accent:hover {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-text);
}

.btn.sent {
  background-color: #1b5e3a;
  border-color: #1b5e3a;
  color: #ffffff;
  cursor: default;
}

/* Grid & Portfolio Layout */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 3rem;
}

.portfolio-item {
  display: flex;
  flex-direction: column;
}

.portfolio-img-wrapper {
  overflow: hidden;
  background-color: var(--color-bg-alt);
  aspect-ratio: 4 / 5;
  border: 1px solid var(--color-border);
  margin-bottom: 1.2rem;
  position: relative;
}

.portfolio-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.portfolio-item:hover .portfolio-img-wrapper img {
  transform: scale(1.05);
}

.portfolio-caption {
  text-align: center;
}

.portfolio-item h2, .portfolio-item h3 {
  font-size: 1.4rem;
  margin-bottom: 0.4rem;
}

.portfolio-item .category {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1rem;
  color: var(--color-text-muted);
}

/* Portfolio Detail Page */
.project-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.project-header {
  grid-column: 1 / -1;
  margin-bottom: 1rem;
}

.project-header h1 {
  font-size: 2.2rem;
  margin-bottom: 0.5rem;
}

.project-gallery {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.project-gallery img {
  border: 1px solid var(--color-border);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.02);
}

.project-info {
  position: sticky;
  top: 100px;
}

.project-meta {
  display: flex;
  gap: 1.5rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 1rem;
}

.project-description {
  margin-bottom: 3rem;
  color: #444444;
  font-size: 1.05rem;
  line-height: 1.8;
}

.project-description p {
  margin-bottom: 1.5rem;
}

/* Blog List Page */
.blog-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.search-bar {
  flex-grow: 1;
  max-width: 400px;
  position: relative;
}

.search-bar input {
  width: 100%;
  padding: 0.8rem 1.2rem;
  border: 1px solid var(--color-border);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  background-color: var(--color-bg-alt);
  transition: var(--transition-smooth);
}

.search-bar input:focus {
  outline: none;
  border-color: var(--color-accent-dark);
  background-color: var(--color-bg);
}

.tag-cloud {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tag-btn {
  padding: 0.4rem 1rem;
  font-size: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 50px;
  background-color: var(--color-bg);
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.05rem;
  transition: var(--transition-smooth);
  text-decoration: none;
  color: inherit;
}

.tag-btn:hover, .tag-btn.active {
  background-color: var(--color-accent-light);
  border-color: var(--color-accent-dark);
  color: var(--color-text);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 3.5rem;
}

.blog-item {
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  transition: var(--transition-smooth);
}

.blog-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
}

.blog-img-wrapper {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  position: relative;
}

.blog-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.blog-content {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.blog-date {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1rem;
  color: var(--color-text-muted);
  margin-bottom: 0.8rem;
}

.blog-item h2, .blog-item h3 {
  font-size: 1.25rem;
  margin-bottom: 0.8rem;
  line-height: 1.4;
}

.blog-item p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-item-footer {
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
}

.blog-item .read-more {
  font-weight: 500;
  border-bottom: 1px solid var(--color-accent-dark);
  padding-bottom: 2px;
}

/* Blog Post Detail Page */
.post-layout {
  max-width: 800px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

.post-header {
  text-align: center;
  margin-bottom: 3rem;
}

.post-date {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.15rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
  display: block;
}

.post-layout h1 {
  font-size: 2.1rem;
  margin-bottom: 1.5rem;
}

.post-tags {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.post-tags span, .post-tags a {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05rem;
  padding: 0.3rem 0.8rem;
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 50px;
  color: var(--color-text);
  transition: var(--transition-smooth);
}

.post-tags a:hover {
  background-color: var(--color-accent-light);
  border-color: var(--color-accent-dark);
  color: var(--color-text);
}

.post-cover-img {
  margin-bottom: 3.5rem;
  border: 1px solid var(--color-border);
}

.post-body {
  font-size: 1.1rem;
  line-height: 1.9;
  color: #333333;
}

.post-body p {
  margin-bottom: 2rem;
}

.post-body h2, .post-body h3 {
  margin-top: 2.5rem;
  margin-bottom: 1.2rem;
}

.post-body blockquote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.4rem;
  border-left: 3px solid var(--color-accent-dark);
  padding-left: 2rem;
  margin: 2.5rem 0;
  color: var(--color-text);
}

.post-body img {
  margin: 2.5rem 0;
  border: 1px solid var(--color-border);
  width: 100%;
}

/* Inline post figures and captions */
.post-figure {
  margin: 3rem auto;
  text-align: center;
  max-width: 100%;
}

.post-figure img {
  margin: 0 auto 0.3rem auto;
  border: 1px solid var(--color-border);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.01);
}

.post-figure figcaption {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-top: 0.2rem;
  text-transform: none;
  letter-spacing: normal;
  font-style: normal;
}

/* CV & Contact Section */
.contact-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 5rem;
  align-items: start;
}

.cv-section h2, .form-section h2 {
  font-size: 2rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.8rem;
}

.cv-timeline {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.cv-item {
  position: relative;
  padding-left: 2rem;
  border-left: 1px solid var(--color-accent);
}

.cv-item::before {
  content: '';
  position: absolute;
  left: -4.5px;
  top: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-accent-dark);
}

.cv-period {
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1rem;
  color: var(--color-text-muted);
  margin-bottom: 0.3rem;
}

.cv-item h3 {
  font-size: 1.25rem;
  margin-bottom: 0.3rem;
}

.cv-institution {
  font-size: 0.85rem;
  font-weight: 400;
  font-style: italic;
  color: var(--color-text-muted);
  margin-bottom: 0.8rem;
}

.cv-item p {
  font-size: 0.9rem;
  color: #555555;
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 3rem;
}

.skills-list span {
  font-size: 0.8rem;
  padding: 0.4rem 1rem;
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 4px;
}

/* Contact Form styling */
.form-group {
  margin-bottom: 1.8rem;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1rem;
  margin-bottom: 0.6rem;
  font-weight: 500;
}

.form-group input, .form-group textarea {
  width: 100%;
  padding: 0.9rem 1.2rem;
  border: 1px solid var(--color-border);
  background-color: var(--color-bg-alt);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 300;
  transition: var(--transition-smooth);
}

.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent-dark);
  background-color: var(--color-bg);
}

.captcha-group {
  margin-bottom: 1.8rem;
}

.form-status {
  margin-top: 1.5rem;
  font-size: 0.9rem;
  padding: 1rem;
  border-radius: 4px;
  display: none;
}

.form-status.success {
  display: block;
  background-color: #e6f7ed;
  border: 1px solid #c2ebd1;
  color: #1b5e3a;
}

.form-status.error {
  display: block;
  background-color: #fdf2f2;
  border: 1px solid #fbd5d5;
  color: #9b1c1c;
}

/* Home Hero Section */
.hero {
  height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  background-color: #1a1a1a;
  color: #ffffff;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.7) 100%);
  z-index: 1;
}

.hero-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.7;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding: 2rem;
}

.hero h1 {
  font-size: 4.5rem;
  color: #ffffff;
  margin-bottom: 1rem;
  letter-spacing: 0.05rem;
}

.hero p {
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.25rem;
  margin-bottom: 2.5rem;
  font-weight: 400;
  color: var(--color-accent);
}

.hero .btn {
  border-color: #ffffff;
  color: #ffffff;
}

.hero .btn:hover {
  background-color: #ffffff;
  color: #1a1a1a;
}

/* Home Featured Work Section */
.featured-section {
  background-color: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.section-header p {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.15rem;
  color: var(--color-text-muted);
}

.view-all-link {
  display: block;
  text-align: center;
  margin-top: 3.5rem;
}

.view-all-link a {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.15rem;
  font-weight: 500;
  border-bottom: 1px solid var(--color-accent-dark);
  padding-bottom: 4px;
}

/* Footer styling */
footer {
  border-top: 1px solid var(--color-border);
  background-color: var(--color-bg);
  padding: 1.5rem 1.5rem;
  text-align: center;
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.footer-copyright {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1rem;
}

.footer-stamp {
  width: 65px;
  height: 65px;
  margin: 0 auto 1rem auto;
  border-radius: 50%;
  display: block;
  object-fit: cover;
}

/* Mobile Responsiveness */
@media (max-width: 900px) {
  .project-detail, .contact-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .project-header h1 {
    font-size: 1.6rem;
  }
  
  .project-info {
    position: static;
  }
  
  .hero h1 {
    font-size: 3rem;
  }
  
  .page-title {
    font-size: 2.2rem;
  }
}

@media (max-width: 600px) {
  .header-container {
    flex-direction: column;
    gap: 1.5rem;
    padding: 1.5rem 1rem;
  }
  
  .logo {
    text-align: center;
    width: 100%;
  }
  
  .logo a {
    display: block;
    text-align: center;
  }
  
  nav ul {
    gap: 1.5rem;
  }
  
  .container {
    padding: 2rem 1rem;
  }
  
  .post-layout {
    padding: 2rem 1rem;
  }
  
  .project-gallery {
    flex-direction: row;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    gap: 1rem;
    padding-bottom: 0.75rem;
    margin-bottom: 1rem;
  }
  
  .project-gallery .portfolio-img-wrapper {
    height: 350px;
    width: auto;
    flex: 0 0 auto;
    aspect-ratio: auto;
    scroll-snap-align: start;
    margin-bottom: 0;
  }
  
  .project-gallery .portfolio-img-wrapper img {
    width: auto;
    height: 100%;
    object-fit: contain;
  }
  
  .portfolio-grid, .blog-grid {
    grid-template-columns: 1fr;
  }
}

/* Lightbox Zoom Overlay */
.lightbox-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(8px);
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.lightbox-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-overlay img {
  display: block;
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border: 1px solid var(--color-border);
  box-shadow: 0 15px 50px rgba(0, 0, 0, 0.08);
  cursor: zoom-out;
  transform: scale(0.95);
  transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.lightbox-overlay.active img {
  transform: scale(1);
}

/* Announcement Bar styling */
.announcement-bar {
  background-color: var(--color-accent);
  color: var(--color-text);
  text-align: center;
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: none;
  letter-spacing: 0.15rem;
  z-index: 1002;
  border-bottom: 1px solid var(--color-accent-dark);
}

/* Accessibility Focus Outlines & Skip Link */
*:focus-visible {
  outline: 2px solid var(--color-text);
  outline-offset: 3px;
}

.search-bar input:focus-visible,
.form-group input:focus-visible,
.form-group textarea:focus-visible {
  outline: 2px solid var(--color-text) !important;
  outline-offset: 1px !important;
  border-color: var(--color-accent-dark) !important;
}

/* Skip link styling for keyboard navigation */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background-color: var(--color-text);
  color: var(--color-bg);
  padding: 0.8rem 1.5rem;
  z-index: 9999;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15rem;
  border: 1px solid var(--color-text);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
  transition: top 0.2s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.skip-link:focus-visible {
  top: 1rem;
  outline: none; /* Focus-visible is handled by position shift, no additional outline needed */
}

/* Related Items Section */
.related-section {
  margin-top: 5rem;
  border-top: 1px solid var(--color-border);
  padding-top: 4rem;
  width: 100%;
}

.related-section h2 {
  font-family: var(--font-serif);
  font-size: 2rem;
  text-align: center;
  margin-bottom: 3rem;
  letter-spacing: 0.05rem;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

@media (max-width: 768px) {
  .related-grid {
    gap: 1rem;
  }
  .related-section h2 {
    font-size: 1.6rem;
    margin-bottom: 2rem;
  }
}

@media (max-width: 600px) {
  .related-grid {
    gap: 0.5rem;
  }
  .related-section h2 {
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
  }
  .related-grid .portfolio-caption h3,
  .related-grid .blog-content h3 {
    font-size: 0.85rem !important;
    margin-bottom: 0.2rem !important;
  }
  .related-grid .portfolio-caption .category,
  .related-grid .blog-content .blog-date {
    font-size: 0.55rem !important;
    letter-spacing: 0.05rem !important;
  }
  .related-grid .blog-item {
    padding: 0.75rem !important;
  }
  .related-grid .blog-item p {
    display: none !important; /* Hide summary text on mobile to keep preview cards compact */
  }
}