/* ========================================
   UNIVERSAL STYLES - Apply to all media
   ======================================== */

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #fff;
  color: #111;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
  letter-spacing: -0.011em;
}

.container {
  width: 85%;
  max-width: 900px;
  background-color: #fff;
  padding: 40px;
  margin: 20px;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeIn 0.8s ease forwards;
  display: flex;
  flex-direction: column;
}

@keyframes fadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

header {
  text-align: center;
  padding-bottom: 40px;
  margin-bottom: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  border-bottom: 1px solid #f0f0f0;
}

header h1 {
  margin: 0 0 8px 0;
  color: #000;
  font-size: 2.5em;
  font-weight: 600;
  letter-spacing: -0.02em;
  transition: transform 0.3s ease;
}

header h1:hover {
  transform: translateY(-2px);
}

header p {
  color: #444;
  margin: 0 0 15px 0;
  font-size: 1.2em;
  font-weight: 400;
}

.contact-info {
  font-size: 0.9em;
  color: #888;
  transition: color 0.3s ease;
  margin-bottom: 10px;
}

.contact-info:hover {
  color: #444;
}

.contact-info a {
  color: #111;
  text-decoration: none;
  transition: all 0.2s ease;
  border-bottom: 1px solid transparent;
}

.contact-info a:hover {
  border-bottom: 1px solid #111;
}

/* Language Toggle Styles */
.language-tabs {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.tab-button {
  padding: 8px 16px;
  border: 1px solid #eee;
  background: transparent;
  color: #666;
  cursor: pointer;
  border-radius: 20px;
  font-size: 0.9em;
  transition: all 0.3s ease;
  font-family: inherit;
  outline: none;
}

.tab-button:hover {
  background: #f8f8f8;
  color: #000;
}

.tab-button.active {
  background: #000;
  color: #fff;
  border-color: #000;
}

/* Content Wrapper */
.content-wrapper {
  position: relative;
  overflow: hidden;
}

/* Resume Content Styles */
.resume-content {
  opacity: 1;
  transform: translateX(0);
  transition: all 0.3s ease-in-out;
  position: relative;
}

.resume-content.hidden {
  opacity: 0;
  transform: translateX(-100%);
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  pointer-events: none;
}

.resume-content.hidden + .resume-content:not(.hidden) {
  transform: translateX(0);
}

.section {
  margin-bottom: 40px;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.5s ease;
  page-break-inside: avoid; /* Prevent sections from breaking across pages */
}

.section.active {
  opacity: 1;
  transform: translateY(0);
}

.section h2 {
  padding-bottom: 12px;
  color: #000;
  font-size: 1.5em;
  font-weight: 600;
  letter-spacing: -0.01em;
  border-bottom: 1px solid #f0f0f0;
  margin: 0 0 20px 0;
}

.experience-item, .education-item {
  margin-bottom: 25px;
  padding: 0 0 5px 0;
  transition: transform 0.3s ease;
  page-break-inside: avoid; /* Keep experience items together */
}

.experience-item:hover, .education-item:hover {
  transform: translateX(5px);
}

.experience-item h3, .education-item h3 {
  color: #000;
  font-size: 1.1em;
  font-weight: 500;
  margin: 0 0 5px 0;
}

.company, .university {
  font-weight: 400;
  color: #444;
  margin-bottom: 3px;
}

.location {
  font-size: 0.9em;
  color: #666;
  margin-bottom: 3px;
}

.duration {
  font-size: 0.9em;
  color: #666;
  margin-bottom: 8px;
  display: block;
}

.project-title {
  font-size: 0.95em;
  color: #333;
  margin: 15px 0 8px 0;
  font-weight: 500;
}

.project-title:first-of-type {
  margin-top: 12px;
}

.sub-duration {
  font-size: 0.85em;
  color: #888;
  margin: -5px 0 8px 0;
  display: block;
}

.experience-item ul {
  padding-left: 20px;
  margin: 10px 0;
}

.experience-item li {
  margin-bottom: 8px;
  position: relative;
  color: #222;
}

.skills-languages {
  display: flex;
  gap: 40px;
}

.skills-languages > div {
  flex: 1;
}

.skills-list {
  padding-left: 20px;
  list-style-type: none;
}

.skills-list li {
  margin-bottom: 8px;
  position: relative;
  color: #222;
}

.skills-list li::before {
  content: "•";
  position: absolute;
  left: -15px;
  color: #000;
}

.publications .skills-list li {
  margin-bottom: 20px;
  line-height: 1.5;
}

/* Footer Styles */
footer {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid #f0f0f0;
}

.contact-links {
  text-align: center;
}

.contact-links a {
  display: inline-block;
  margin: 0 15px;
  padding: 8px 16px;
  text-decoration: none;
  color: #111;
  border: 1px solid transparent;
  border-radius: 4px;
  transition: all 0.2s ease;
  outline: none;
}

.contact-links a:hover {
  background-color: #f8f8f8;
  transform: translateY(-2px);
}

.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(to right, #000, #3498db, #000);
  background-size: 200% 100%;
  z-index: 1000;
  transform-origin: 0 0;
  transform: scaleX(0);
  transition: transform 0.2s ease;
  animation: progress-bar-animation 5s linear infinite;
}

@keyframes progress-bar-animation {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* ========================================
   MOBILE OPTIMIZATION
   ======================================== */

@media (max-width: 768px) {
  .container {
    width: 95%;
    padding: 20px 15px;
    margin: 10px;
  }

  header {
    padding-bottom: 25px;
    margin-bottom: 25px;
  }

  header h1 {
    font-size: 1.8em;
  }

  header p {
    font-size: 1em;
  }

  .contact-info {
    font-size: 0.85em;
  }

  .language-tabs {
    gap: 8px;
  }

  .tab-button {
    padding: 6px 12px;
    font-size: 0.85em;
  }

  .section {
    margin-bottom: 30px;
  }

  .section h2 {
    font-size: 1.3em;
    margin-bottom: 15px;
  }

  .experience-item, .education-item {
    margin-bottom: 20px;
  }

  .experience-item h3, .education-item h3 {
    font-size: 1em;
  }

  .skills-languages {
    flex-direction: column;
    gap: 20px;
  }

  .experience-item ul,
  .skills-list {
    padding-left: 18px;
  }

  .experience-item li,
  .skills-list li {
    font-size: 0.95em;
    margin-bottom: 10px;
  }

  footer {
    margin-top: 30px;
    padding-top: 15px;
  }

  .contact-links a {
    display: block;
    margin: 8px 0;
    padding: 10px 12px;
  }

  /* Disable hover effects on mobile */
  .experience-item:hover,
  .education-item:hover {
    transform: none;
  }

  header h1:hover {
    transform: none;
  }
}

/* Small mobile devices */
@media (max-width: 480px) {
  .container {
    padding: 15px 10px;
  }

  header h1 {
    font-size: 1.5em;
  }

  .section h2 {
    font-size: 1.2em;
  }

  .experience-item li,
  .skills-list li {
    font-size: 0.9em;
  }
}

/* ========================================
   PRINT OPTIMIZATION
   ======================================== */

@media print {
  /* Reset container for print */
  body {
    background: white;
    margin: 0;
    padding: 0;
  }

  .container {
    width: 100%;
    max-width: none;
    margin: 0;
    padding: 0.5in 0.75in;
    animation: none;
    opacity: 1;
    transform: none;
  }

  /* Hide web-only elements */
  .progress-bar,
  .language-tabs,
  footer,
  .contact-links {
    display: none !important;
  }

  /* Hide inactive language content */
  .resume-content.hidden {
    display: none !important;
  }

  /* Header optimization for print */
  header {
    border-bottom: 2px solid #000;
    padding-bottom: 15px;
    margin-bottom: 20px;
  }

  header h1 {
    font-size: 24pt;
    color: #000;
    margin-bottom: 4pt;
  }

  header p {
    font-size: 12pt;
    color: #333;
    margin-bottom: 8pt;
  }

  .contact-info {
    font-size: 10pt;
    color: #333;
  }

  /* Show URLs for links in print */
  .contact-info a::after {
    content: " (" attr(href) ")";
    font-size: 9pt;
    color: #666;
  }

  /* Section styling for print */
  .section {
    page-break-inside: avoid;
    margin-bottom: 20pt;
    opacity: 1;
    transform: none;
    transition: none;
  }

  .section h2 {
    font-size: 14pt;
    font-weight: 600;
    color: #000;
    border-bottom: 1.5pt solid #000;
    padding-bottom: 6pt;
    margin-bottom: 12pt;
    page-break-after: avoid;
  }

  /* Experience items for print */
  .experience-item,
  .education-item {
    page-break-inside: avoid;
    margin-bottom: 15pt;
    padding: 0;
  }

  .experience-item h3,
  .education-item h3 {
    font-size: 11pt;
    font-weight: 600;
    color: #000;
    margin-bottom: 3pt;
  }

  .company,
  .university {
    font-size: 10pt;
    font-weight: 500;
    color: #333;
  }

  .location,
  .duration,
  .sub-duration {
    font-size: 9pt;
    color: #555;
  }

  .project-title {
    font-size: 10pt;
    font-weight: 600;
    color: #000;
    margin: 10pt 0 6pt 0;
  }

  /* Lists for print */
  .experience-item ul,
  .skills-list {
    margin: 8pt 0;
    padding-left: 18pt;
  }

  .experience-item li,
  .skills-list li {
    font-size: 10pt;
    line-height: 1.4;
    margin-bottom: 4pt;
    color: #222;
  }

  .skills-list li::before {
    color: #000;
  }

  /* Skills section for print */
  .skills-languages {
    display: flex;
    gap: 30pt;
    page-break-inside: avoid;
  }

  .skills-languages > div {
    flex: 1;
  }

  .skills h3,
  .languages h3 {
    font-size: 11pt;
    font-weight: 600;
    margin-bottom: 8pt;
  }

  /* Publications for print */
  .publications .skills-list li {
    margin-bottom: 12pt;
    line-height: 1.4;
    font-size: 9pt;
  }

  /* Page break controls */
  h2 {
    page-break-after: avoid;
  }

  h3 {
    page-break-after: avoid;
  }

  ul {
    page-break-before: avoid;
  }

  /* Ensure professional B&W printing */
  * {
    color: #000 !important;
    background: white !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }

  /* Keep some subtle grays for readability */
  .location,
  .duration,
  .sub-duration,
  .contact-info {
    color: #444 !important;
  }

  /* Remove transitions and animations */
  * {
    animation: none !important;
    transition: none !important;
  }

  /* Optimize for standard paper size */
  @page {
    margin: 0.5in 0.75in;
    size: letter; /* US Letter: 8.5" x 11" */
  }

  /* Alternative for A4 paper (uncomment if needed) */
  /*
  @page {
    margin: 1.5cm 2cm;
    size: A4;
  }
  */

  /* Prevent orphans and widows */
  p, li {
    orphans: 3;
    widows: 3;
  }

  /* Ensure content fits on pages */
  .section {
    max-width: 100%;
  }
}

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

/* High contrast mode support */
@media (prefers-contrast: high) {
  .section h2 {
    border-bottom: 2px solid #000;
  }

  header {
    border-bottom: 2px solid #000;
  }
}

/* Reduced motion for accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }

  .container {
    animation: none;
    opacity: 1;
    transform: none;
  }

  .section {
    opacity: 1;
    transform: none;
  }
}

/* Focus visible for keyboard navigation */
*:focus-visible {
  outline: 2px solid #000;
  outline-offset: 2px;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid #3498db;
  outline-offset: 2px;
}