/* ========================================
   JORGE ARREOLA PORTFOLIO - STYLE SYSTEM
   ======================================== */

/* CSS Custom Properties (Design Tokens) */
:root {
  /* Colors - Light Mode (Default) */
  --color-bg: #ffffff;
  --color-text: #000000;
  --color-text-muted: #666666;
  --color-border: #e0e0e0;
  --color-accent: #333333;
  --color-focus: #0066cc;
  
  /* Typography */
  --font-family: 'DejaVu Sans Mono', 'Menlo', 'Monaco', 'Consolas', monospace;
  --font-size-base: 16px;
  --font-size-small: 14px;
  --font-size-xsmall: 12px;
  --font-size-large: 18px;
  --font-size-xlarge: 24px;
  --font-size-hero: 32px;
  --line-height: 1.6;
  
  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  
  /* Transitions */
  --transition-speed: 0.3s;
  --transition-ease: ease-in-out;
  
  /* Layout */
  --max-width: 1200px;
  --carousel-size: min(60vw, 60vh);
}

/* Dark Mode */
[data-theme="dark"] {
  --color-bg: #121212;
  --color-text: #e0e0e0;
  --color-text-muted: #999999;
  --color-border: #333333;
  --color-accent: #cccccc;
}

/* High Contrast Mode */
[data-contrast="high"] {
  --color-bg: #000000;
  --color-text: #ffffff;
  --color-text-muted: #ffffff;
  --color-border: #ffffff;
  --color-accent: #ffffff;
}

[data-theme="dark"][data-contrast="high"] {
  --color-bg: #000000;
  --color-text: #ffffff;
  --color-text-muted: #ffffff;
}

/* Font Face - Placeholder for DejaVu Sans Mono */
@font-face {
  font-family: 'DejaVu Sans Mono';
  src: url('assets/fonts/DejaVuSansMono.woff2') format('woff2'),
       url('assets/fonts/DejaVuSansMono.woff') format('woff'),
       url('assets/fonts/DejaVuSansMono.ttf') format('truetype');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'DejaVu Sans Mono';
  src: url('assets/fonts/DejaVuSansMono-Bold.woff2') format('woff2'),
       url('assets/fonts/DejaVuSansMono-Bold.woff') format('woff'),
       url('assets/fonts/DejaVuSansMono-Bold.ttf') format('truetype');
  font-weight: bold;
  font-style: normal;
  font-display: swap;
}

/* ========================================
   BASE RESET & DEFAULTS
   ======================================== */

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

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

/* Respect reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Reduced motion toggle override */
[data-reduced-motion="true"] *,
[data-reduced-motion="true"] *::before,
[data-reduced-motion="true"] *::after {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  transition: background-color var(--transition-speed) var(--transition-ease),
              color var(--transition-speed) var(--transition-ease);
}

/* Typography Scale Classes */
.text-small { font-size: var(--font-size-small); }
.text-xsmall { font-size: var(--font-size-xsmall); }
.text-large { font-size: var(--font-size-large); }
.text-xlarge { font-size: var(--font-size-xlarge); }
.text-hero { font-size: var(--font-size-hero); }
.text-muted { color: var(--color-text-muted); }

a {
  color: var(--color-text);
  text-decoration: none;
  transition: opacity var(--transition-speed) var(--transition-ease);
}

a:hover {
  opacity: 0.7;
}

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

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

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  padding: var(--spacing-sm) var(--spacing-md);
  transition: all var(--transition-speed) var(--transition-ease);
}

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

button:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

/* ========================================
   LAYOUT
   ======================================== */

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

/* Make hero always take full viewport height so centering is consistent */
.main-content {
  min-height: calc(100vh - 80px);
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  padding-top: 80px; /* Account for fixed header */
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ========================================
   HEADER & NAVIGATION
   ======================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--color-bg);
  transition: background-color var(--transition-speed) var(--transition-ease);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--max-width);
  margin: 0 auto;
  position: relative;
}

.site-logo {
  font-size: var(--font-size-small);
  font-weight: bold;
  letter-spacing: 0.05em;
}

.site-logo a {
  display: block;
  position: relative;
}

.header-contact {
  font-size: var(--font-size-small);
}

/* Header Navigation (Category links in header bar) */
.header-nav {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--spacing-xl);
}

.header-nav a {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-speed) var(--transition-ease);
}

.header-nav a:hover {
  color: var(--color-text);
  opacity: 1;
}

.header-nav a.active {
  color: var(--color-text);
  font-weight: bold;
}

.main-nav {
  display: flex;
  gap: var(--spacing-lg);
}

.main-nav a {
  font-size: var(--font-size-small);
  position: relative;
  padding-bottom: 2px;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-text);
  transition: width var(--transition-speed) var(--transition-ease);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}

.main-nav a.active {
  font-weight: bold;
}

/* Mobile Navigation */
.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: var(--spacing-sm);
}

.mobile-nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  margin: 5px 0;
  transition: all var(--transition-speed) var(--transition-ease);
}

@media (max-width: 768px) {
  .mobile-nav-toggle {
    display: block;
  }
  
  .main-nav {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-speed) var(--transition-ease);
  }
  
  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
}

/* ========================================
   CATEGORY NAVIGATION (Above Carousel)
   ======================================== */

.category-nav {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-md) 0;
}

.category-nav a {
  color: var(--color-text);
  font-size: var(--font-size-base);
  position: relative;
  padding: var(--spacing-xs) 0;
  text-decoration: none;
}

.category-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-text);
  transition: width var(--transition-speed) var(--transition-ease);
}

.category-nav a:hover::after,
.category-nav a.active::after {
  width: 100%;
}

.category-nav a.active {
  font-weight: bold;
}

/* Category Title (single category name on subpages) */
.category-title {
  font-size: var(--font-size-base);
  font-weight: normal;
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

/* ========================================
   CAROUSEL (Template A Hero)
   ======================================== */

.carousel-container {
  width: var(--carousel-size);

  margin: 0 auto var(--spacing-lg);
}

.carousel {
  position: relative;
  width: 100%;
  padding-bottom: 100%; /* 1:1 Aspect Ratio */
  overflow: hidden;
  background: var(--color-border);
}

.carousel-track {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.6s var(--transition-ease);
  display: flex;
  align-items: center;
  justify-content: center;
}

.carousel-slide.active {
  opacity: 1;
}

.carousel-slide a {
  display: block;
  width: 100%;
  height: 100%;
}

.carousel-slide img,
.carousel-slide video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel-slide .placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-border);
  color: var(--color-text-muted);
  font-size: var(--font-size-small);
  text-align: center;
  padding: var(--spacing-md);
}

/* Carousel Controls */
.carousel-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.carousel-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--color-border);
  font-size: var(--font-size-large);
  padding: 0;
}

.carousel-indicators {
  display: flex;
  gap: var(--spacing-sm);
}

.carousel-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-border);
  border: none;
  padding: 0;
  cursor: pointer;
  transition: background var(--transition-speed) var(--transition-ease);
}

.carousel-indicator.active,
.carousel-indicator:hover {
  background: var(--color-text);
}

/* Carousel Controls - Hidden */
.carousel-controls {
  display: none;
}

/* Carousel Project Info - Museum Style, Left Aligned */
.carousel-info {
  text-align: left;
  margin-top: var(--spacing-md);
}

.carousel-info h2 {
  font-size: var(--font-size-base);
  font-weight: normal;
  margin-bottom: var(--spacing-xs);
}

.carousel-info .project-date {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
}

.carousel-info .project-date::before {
  content: '(';
}

.carousel-info .project-date::after {
  content: ')';
}

/* ========================================
   PROJECT LIST (Category Pages)
   ======================================== */

.project-list {
  width: 100%;

  margin: 0 auto;
  text-align: left;
}

.project-list-item {
  display: block;
  padding: var(--spacing-sm) 0;
  padding-left: 1.5em;
  font-size: var(--font-size-base);
  position: relative;
  color: var(--color-text-muted);
  transition: color var(--transition-speed) var(--transition-ease);
  outline: none !important;
  box-shadow: none !important;
  border: none !important;
}

.project-list-item:focus,
.project-list-item:focus-visible {
  outline: none !important;
  box-shadow: none !important;
}

.project-list-item::before {
  content: '>';
  position: absolute;
  left: 0;
  opacity: 0;
  transition: opacity var(--transition-speed) var(--transition-ease);
}

.project-list-item:hover::before,
.project-list-item.active::before {
  opacity: 1;
}

.project-list-item:hover,
.project-list-item.active {
  color: var(--color-text);
}

/* ========================================
   CATEGORY LAYOUT (Side-by-side on subpages)
   ======================================== */

.category-layout {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: var(--spacing-2xl);
  width: 100%;
  max-width: var(--max-width);
  padding: 0 var(--spacing-lg);
}

.category-layout .carousel-container {
  flex-shrink: 0;
  margin: 0;
}

.category-layout .project-list {
  flex: 1;
  max-width: 400px;
  margin: 0;
}

.category-layout .project-info {
  flex: 1;
  max-width: 400px;
  margin: 0;
  text-align: left;
}

.category-layout .project-info .project-title {
  font-size: var(--font-size-xlarge);
  font-weight: bold;
  margin-bottom: var(--spacing-xs);
}

.category-layout .project-info .project-subtitle {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.category-layout .project-info .project-institution {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
}

.category-layout .project-info .project-description {
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--color-text);
}
}

@media (max-width: 900px) {
  .category-layout {
  display: flex;
  align-items: center;
    flex-direction: column;
    align-items: center;
  }
  
  .category-layout .project-list {
    max-width: 100%;
  }
}

/* ========================================
   PROJECT GRID (Alternative listing)
   ======================================== */

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.project-card {
  border: 1px solid var(--color-border);
  transition: border-color var(--transition-speed) var(--transition-ease);
}

.project-card:hover {
  border-color: var(--color-text);
}

.project-card a {
  display: block;
}

.project-card-media {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--color-border);
}

.project-card-media img,
.project-card-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-card-info {
  padding: var(--spacing-md);
}

.project-card-title {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-xs);
}

.project-card-date {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
}

/* ========================================
   PROJECT PAGE (Template B)
   ======================================== */


.project-page {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  padding-top: 80px;
}

.project-page article {
  width: 100%;
  max-width: var(--max-width);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.project-page article {
  width: 100%;
  max-width: var(--max-width);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
/* Project Layout: Side-by-side like category pages */
.project-layout {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: var(--spacing-2xl);
  width: 100%;
  max-width: var(--max-width);
  padding: 0 var(--spacing-lg);
  
}

.project-layout .carousel-container {
  flex-shrink: 0;
  margin: 0;
}

.project-info {
  flex: 1;
  max-width: 400px;
  text-align: left;
}

.project-info .project-title {
  font-size: var(--font-size-xlarge);
  font-weight: bold;
  margin-bottom: var(--spacing-xs);
}

.project-info .project-subtitle {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.project-info .project-date {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
}

.project-info .project-institution {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
}

.project-info .project-description {
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--color-text);
}

@media (max-width: 900px) {
  .project-layout {
    flex-direction: column;
    align-items: center;
  }
  
  .project-info {
    max-width: 100%;
    text-align: center;
  }
}

.project-header {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-md);
}

.project-category {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.project-title {
  font-size: var(--font-size-hero);
  margin-bottom: var(--spacing-sm);
}

.project-date {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
}

.project-hero {
  max-width: 800px;
  margin: 0 auto var(--spacing-2xl);
}

.project-hero img,
.project-hero video {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.project-content {
  max-width: 700px;
  margin: 0 auto;
  padding: 0 var(--spacing-md) var(--spacing-3xl);
}

.project-summary {
  font-size: var(--font-size-large);
  margin-bottom: var(--spacing-2xl);
  line-height: 1.7;
}

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

.project-section h3 {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-section p,
.project-section ul {
  color: var(--color-text-muted);
}

.project-section ul {
  list-style: none;
  padding-left: 0;
}

.project-section li {
  margin-bottom: var(--spacing-xs);
}

.project-nav {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.project-nav a {
  font-size: var(--font-size-small);
}

/* ========================================
   CONTACT PAGE
   ======================================== */

.contact-page {
  padding-top: 100px;
}

.contact-section {
  margin-bottom: var(--spacing-3xl);
}

.contact-section h2 {
  font-size: var(--font-size-xlarge);
  margin-bottom: var(--spacing-lg);
}

.contact-details {
  font-size: var(--font-size-base);
}

.contact-details a {
  text-decoration: underline;
}

/* CV Section */
.cv-section ul {
  list-style: none;
}

.cv-section li {
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

/* ========================================
   TIMELINE
   ======================================== */

.timeline {
  position: relative;
  padding-left: var(--spacing-xl);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  padding-bottom: var(--spacing-xl);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--spacing-xl) - 4px);
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--color-text);
}

.timeline-date {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.timeline-title {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-xs);
}

.timeline-title a:hover {
  text-decoration: underline;
}

.timeline-category {
  font-size: var(--font-size-xsmall);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.timeline-item-link {
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition-speed) var(--transition-ease);
}

.timeline-item-link:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.timeline-education {
  display: flex;
  flex-direction: column;
}

.timeline-item-title {
  font-size: var(--font-size-base);
  color: var(--color-text);
}

.timeline-item-venue {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
  font-style: italic;
}

.timeline {
  position: relative;
  padding-left: var(--spacing-lg);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

/* Timeline Filter Bubbles */
.timeline-instruction {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-sm);
}

.timeline-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-lg);
}

.timeline-filter {
  padding: 0.375rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text-muted);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-speed) var(--transition-ease);
}

.timeline-filter:hover {
  border-color: var(--color-text);
  color: var(--color-text);
}

.timeline-filter.active {
  background: #fff;
  color: #000;
  border-color: #fff;
}

.timeline-filter:focus-visible {
  outline: 2px solid var(--color-text);
  outline-offset: 2px;
}

/* Timeline item visibility */
.timeline-item.hidden {
  display: none !important;
}

.timeline-year-group.hidden {
  display: none !important;
}

.timeline-year-group {
  margin-bottom: var(--spacing-lg);
  position: relative;
}

.timeline-year-label {
  font-size: var(--font-size-large);
  font-weight: bold;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
  position: relative;
}

.timeline-year-label::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--spacing-lg) + 0px);
  top: 50%;
  transform: translateY(-50%);
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-text);
}

.timeline-year-items {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  padding-left: 0;
}

.timeline-year-items .timeline-item {
  padding-bottom: var(--spacing-xs);
}

.timeline-year-items .timeline-item::before {
  display: none;
}

/* ========================================
   FOOTER
   ======================================== */

.site-footer {
  padding: var(--spacing-lg);
  text-align: right;
}

.footer-link {
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
}

.footer-link:hover {
  color: var(--color-text);
}

/* ========================================
   ACCESSIBILITY PANEL
   ======================================== */

.a11y-panel {
  position: fixed;
  bottom: var(--spacing-lg);
  left: var(--spacing-lg);
  z-index: 1000;
}

.a11y-toggle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  padding: 0;
}

.a11y-options {
  position: absolute;
  bottom: 54px;
  left: 0;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: var(--spacing-md);
  min-width: 200px;
  display: none;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.a11y-options.open {
  display: flex;
}

.a11y-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  font-size: var(--font-size-small);
}

.a11y-option button {
  min-width: 36px;
  height: 36px;
  padding: var(--spacing-xs);
}

.font-size-controls {
  display: flex;
  gap: var(--spacing-xs);
}

/* Toggle Switch */
.toggle-switch {
  position: relative;
  width: 44px;
  height: 24px;
  background: var(--color-border);
  border-radius: 12px;
  cursor: pointer;
  border: none;
  padding: 0;
}

.toggle-switch::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: var(--color-bg);
  border-radius: 50%;
  transition: transform var(--transition-speed) var(--transition-ease);
}

.toggle-switch.active {
  background: var(--color-text);
}

.toggle-switch.active::after {
  transform: translateX(20px);
}

/* Reset Settings Button */
.reset-settings {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: var(--font-size-small);
  cursor: pointer;
  margin-top: var(--spacing-sm);
  transition: background var(--transition-speed) var(--transition-ease),
              border-color var(--transition-speed) var(--transition-ease);
}

.reset-settings:hover {
  background: var(--color-border);
  border-color: var(--color-text);
}

/* ========================================
   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;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-text);
  color: var(--color-bg);
  padding: var(--spacing-sm) var(--spacing-md);
  z-index: 1001;
  transition: top var(--transition-speed) var(--transition-ease);
}

.skip-link:focus {
  top: 0;
}

/* ========================================
   RESPONSIVE ADJUSTMENTS
   ======================================== */

@media (max-width: 768px) {
  :root {
    --carousel-size: 85vw;
    --font-size-hero: 24px;
    --font-size-xlarge: 20px;
  }
  
  .site-header {
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  /* Make hero always take full viewport height so centering is consistent */
.main-content {
  min-height: calc(100vh - 80px);
    padding: var(--spacing-md);
  }
  
  .carousel-container {
    margin-top: var(--spacing-2xl);
  }
  
  .project-title {
    font-size: var(--font-size-xlarge);
  }
  
  .project-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  :root {
    --carousel-size: 90vw;
  }
  
  .carousel-controls {
    flex-wrap: wrap;
  }
}

/* Project Tags */
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.project-tags .tag {
  display: inline-block;
  padding: 4px 12px;
  font-size: var(--font-size-small);
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  color: var(--color-text-muted);
}

.category-layout .project-tags {
  margin-bottom: var(--spacing-md);
}


/* ==========================================================================
   Project Info Section
   Layout: Info (title, subtitle, institution, tags, description) on LEFT
           Square image/carousel on RIGHT
   This is the hero/first section when you open a project
   ========================================================================== */

.project-info-section {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-3xl);
  width: 100%;
}

.project-info-section .project-info {
  flex: 0 0 400px;
  max-width: 400px;
  text-align: left;
}

.project-info-section .project-title {
  font-size: var(--font-size-xlarge);
  font-weight: bold;
  margin-bottom: var(--spacing-xs);
}

.project-info-section .project-subtitle {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.project-info-section .project-institution {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
}

.project-info-section .project-tags {
  margin-bottom: var(--spacing-md);
}

.project-info-section .project-description {
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--color-text);
}

.project-info-section .project-square {
  flex: 0 0 var(--carousel-size);
  width: var(--carousel-size);
  height: var(--carousel-size);
}

.project-info-section .project-square .carousel {
  width: 100%;
  height: 100%;
}

/* ==========================================================================
   Carousel and Text Section
   Layout: Square carousel on LEFT, Text (title, body) on RIGHT
   This balances with Project Info Section above
   ========================================================================== */

.carousel-text-section {
  display: flex;
  width: 100%;
  align-items: flex-start;
  margin-bottom: var(--spacing-3xl);
}

/* Section Carousel - left half (50%) */
.section-carousel {
  flex: 0 0 50%;
  width: 50%;
  display: flex;
  justify-content: flex-end;
  padding-right: var(--spacing-xl);
}

.section-carousel .carousel {
  width: var(--carousel-size);
  height: var(--carousel-size);
  border-radius: var(--border-radius);
  overflow: hidden;
}

/* Section Text - right half (50%) */
.section-text {
  flex: 0 0 50%;
  width: 50%;
  max-width: 400px;
  padding-left: var(--spacing-xl);
  text-align: left;
}

.section-title {
  font-size: var(--font-size-large);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

.section-body {
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
}

.section-body:last-child {
  margin-bottom: 0;
}

/* ==========================================================================
   Responsive Styles for Project Sections
   ========================================================================== */

@media (max-width: 900px) {
  .project-info-section {
    flex-direction: column-reverse;
    gap: var(--spacing-lg);
  }
  
  .project-info-section .project-info {
    flex: none;
    max-width: 100%;
    text-align: center;
  }
  
  .project-info-section .project-square {
    flex: none;
    width: 80vw;
    height: 80vw;
    max-width: 400px;
    max-height: 400px;
  }
  
  .carousel-text-section {
    flex-direction: column;
    gap: var(--spacing-lg);
  }
  
  .section-carousel {
    flex: none;
    width: 100%;
    justify-content: center;
    padding-right: 0;
  }
  
  .section-carousel .carousel {
    width: 80vw;
    height: 80vw;
    max-width: 400px;
    max-height: 400px;
  }
  
  .section-text {
    flex: none;
    width: 100%;
    max-width: 100%;
    padding-left: 0;
    padding: 0 var(--spacing-md);
  }
}

/* ==========================================================================
   Carousel and Text Section
   Layout: Text on LEFT, Carousel on RIGHT
   Same approach as Project Info Section for consistency
   ========================================================================== */

.carousel-text-section {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-3xl);
  width: 100%;
  margin-bottom: var(--spacing-3xl);
}

/* Section Text - left side */
.section-text {
  flex: 0 0 400px;
  max-width: 400px;
  text-align: left;
}

.section-title {
  font-size: var(--font-size-large);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

.section-body {
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
}

.section-body:last-child {
  margin-bottom: 0;
}

/* Section Carousel - right side */
.section-carousel {
  flex: 0 0 var(--carousel-size);
  width: var(--carousel-size);
  height: var(--carousel-size);
}

.section-carousel .carousel {
  width: 100%;
  height: 100%;
  border-radius: var(--border-radius);
  overflow: hidden;
}

/* Responsive */
@media (max-width: 900px) {
  .carousel-text-section {
    flex-direction: column-reverse;
    gap: var(--spacing-lg);
  }
  
  .section-text {
    flex: none;
    max-width: 100%;
    text-align: center;
    padding: 0 var(--spacing-md);
  }
  
  .section-carousel {
    flex: none;
    width: 80vw;
    height: 80vw;
    max-width: 400px;
    max-height: 400px;
  }
}

/* Keyboard Navigation Selection */
/* Add > indicator before selected header nav items - absolute so no layout shift */
.header-nav a,
.header-logo,
.header-contact {
  position: relative;
}

.header-nav a.nav-keyboard-selected::before,
.site-logo a.nav-keyboard-selected::before,
.header-contact.nav-keyboard-selected::before {
  content: ">";
  position: absolute;
  left: -1em;
}

/* ========================================
   BLACK & WHITE / GRAYSCALE MODE
   ======================================== */
[data-grayscale="true"] {
  filter: grayscale(1);
}

/* ========================================
   PROJECT LIST META (ITALIC)
   ======================================== */
.project-list-meta {
  font-style: italic;
}

/* ========================================
   EMAIL CONTACT BUTTON & MODAL
   ======================================== */
.email-contact-btn {
  background: var(--color-text);
  color: var(--color-background);
  border: none;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-family: inherit;
  font-size: var(--font-size-base);
  cursor: pointer;
  transition: opacity var(--transition-speed) var(--transition-ease);
}

.email-contact-btn:hover {
  opacity: 0.8;
}

.email-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.email-modal[hidden] {
  display: none;
}

.email-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
}

.email-modal-content {
  position: relative;
  background: #1a1a1a;
  padding: var(--spacing-xl);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.email-modal-content h3 {
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-large);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: bold;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-sm);
  font-family: inherit;
  font-size: var(--font-size-base);
  border: 1px solid var(--color-border);
  background: #2a2a2a;
  color: var(--color-text);
  color: var(--color-text);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.btn-cancel,
.btn-send {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-family: inherit;
  font-size: var(--font-size-base);
  cursor: pointer;
  border: 1px solid var(--color-border);
  transition: all var(--transition-speed) var(--transition-ease);
}

.btn-cancel {
  background: transparent;
  color: var(--color-text);
}

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

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

.btn-send:hover {
  opacity: 0.8;
}

/* Success/Error states */
.form-message {
  padding: var(--spacing-md);
  margin-top: var(--spacing-md);
  text-align: center;
}

.form-message.success {
  background: #d4edda;
  color: #155724;
}

.form-message.error {
  background: #f8d7da;
  color: #721c24;
}

/* ========================================
   CONTACT TWO-COLUMN LAYOUT
   ======================================== */
.contact-two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

@media (max-width: 768px) {
  .contact-two-column {
    grid-template-columns: 1fr;
  }
}

.skills-section {
  padding-top: 0;
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.skill-tag {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1px solid var(--color-border);
  font-size: var(--font-size-small);
  color: var(--color-text-muted);
  transition: all var(--transition-speed) var(--transition-ease);
}

.skill-tag:hover {
  color: var(--color-text);
  border-color: var(--color-text);
}

/* Fix email button contrast in dark mode */
.email-contact-btn {
  background: #000;
  color: #fff;
}

[data-theme="dark"] .email-contact-btn {
  background: #fff;
  color: #000;
}

[data-high-contrast="true"] .email-contact-btn {
  background: #000;
  color: #fff;
  border: 2px solid #000;
}

[data-theme="dark"][data-high-contrast="true"] .email-contact-btn {
  background: #fff;
  color: #000;
  border: 2px solid #fff;
}

/* Contact Buttons Layout */
.contact-buttons {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.linkedin-btn {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  border: 1px solid var(--color-text);
  color: var(--color-text);
  text-decoration: none;
  transition: all var(--transition-speed) var(--transition-ease);
}

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

[data-theme="dark"] .linkedin-btn:hover {
  background: #fff;
  color: #000;
}


/* ========================================
   SKILL TAG FILTER
   ======================================== */
.skill-tag {
  background: transparent;
  cursor: pointer;
}

.skill-tag.active {
  background: #fff;
  color: #000;
  border-color: #fff;
}

/* Ensure skill tag text is visible in dark mode */
[data-theme="dark"] .skill-tag.active {
  background: #fff;
  color: #000;
  border-color: #fff;
}

[data-theme="dark"] .skill-tag:hover {
  color: #fff;
  border-color: #fff;
}

.skill-filtered-projects {
  margin-top: var(--spacing-lg);
}

.skill-project-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.skill-project-list .project-list-item {
  display: block;
  padding: var(--spacing-sm) 0;
  padding-left: 1.5em;
  font-size: var(--font-size-base);
  position: relative;
  color: var(--color-text-muted);
  transition: color var(--transition-speed) var(--transition-ease);
}

.skill-project-list .project-list-item::before {
  content: '>';
  position: absolute;
  left: 0;
  opacity: 0;
  transition: opacity var(--transition-speed) var(--transition-ease);
}

.skill-project-list .project-list-item:hover {
  color: var(--color-text);
}

.skill-project-list .project-list-item:hover::before {
  opacity: 1;
}

.skill-project-list .project-list-item a {
  color: inherit;
  text-decoration: none;
}

.skill-project-list .project-item-title {
  color: var(--color-text);
}

.skill-project-list .project-item-meta {
  font-style: italic;
  color: var(--color-text-muted);
}

/* CV List styling */
.cv-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.cv-list li {
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

.cv-list li:last-child {
  border-bottom: none;
}

.cv-list li strong {
  color: var(--color-text);
}

/* Timeline career/education items styling */
.timeline-item.timeline-career .timeline-title {
  color: var(--color-text-muted);
  font-weight: normal;
}

.timeline-item.timeline-career .timeline-category {
  font-style: italic;
}

/* Inline project tags */
.project-tags-inline {
  margin-left: 0.75rem;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-style: italic;
}

/* Skills helper text */
.skills-helper {
  font-size: 0.875rem;
  margin-top: 0.25rem;
  margin-bottom: 1rem;
}

/* About section with photo */
.about-content {
  display: flex;
  gap: var(--spacing-xl);
  align-items: flex-start;
}

.about-text {
  flex: 1;
}

.about-text .contact-buttons {
  margin-top: var(--spacing-lg);
}

.about-photo {
  flex-shrink: 0;
}

.photo-placeholder {
  width: 195px;
  height: 195px;
  background-color: var(--color-border);
  border-radius: 4px;
}

/* Horizontal Timeline - Grouped by Year */


.timeline-item-title {
  display: block;
  color: var(--color-text);
}

.timeline-item-venue {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}