/* ========================================
   Korean Minimalist Portfolio - Style Sheet
   韩国艺术极简风作品集样式
   ======================================== */

/* CSS Variables */
:root {
  /* Colors */
  --color-cream: #FAF8F3;
  --color-beige: #E8E2D5;
  --color-accent: #C4A884;
  --color-text: #3D3935;
  --color-light-gray: #F5F3EE;
  --color-pink-gray: #D9CFCF;
  
  /* Typography */
  --font-serif: 'Playfair Display', 'Noto Serif SC', Georgia, serif;
  --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 8rem;
  
  /* Border Radius */
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 16px;
  --border-radius-xl: 24px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-cream);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 1.2;
}

.section-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-accent);
  margin-bottom: var(--spacing-xs);
}

.section-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: var(--spacing-sm);
}

.section-divider {
  width: 60px;
  height: 1px;
  background-color: var(--color-accent);
  margin: var(--spacing-md) auto;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(250, 248, 243, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(196, 168, 132, 0.1);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  max-width: 1400px;
  margin: 0 auto;
  gap: var(--spacing-md);
}

/* Hamburger Menu */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
  z-index: 1002;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  transition: var(--transition-fast);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--color-text);
  flex-shrink: 0;
}

.nav-menu {
  display: flex;
  gap: var(--spacing-md);
  flex: 1;
  justify-content: center;
}

.nav-link {
  font-size: 0.875rem;
  color: var(--color-text);
  opacity: 0.7;
  transition: var(--transition-fast);
}

.nav-link:hover {
  opacity: 1;
  color: var(--color-accent);
}

/* Language Switcher */
.language-switcher {
  position: relative;
  z-index: 1001;
  flex-shrink: 0;
}

.lang-current {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--color-light-gray);
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: var(--transition-fast);
  border: 1px solid transparent;
}

.lang-current:hover {
  background: var(--color-beige);
  border-color: var(--color-accent);
}

.lang-flag {
  font-size: 1.25rem;
}

.lang-name {
  font-size: 0.875rem;
  font-weight: 500;
}

.lang-arrow {
  font-size: 0.625rem;
  opacity: 0.6;
  transition: var(--transition-fast);
}

.language-switcher.active .lang-arrow {
  transform: rotate(180deg);
}

.lang-dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  min-width: 140px;
  background: white;
  border-radius: var(--border-radius-md);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--transition-fast);
}

.language-switcher.active .lang-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.lang-dropdown-item:first-child {
  border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
}

.lang-dropdown-item:last-child {
  border-radius: 0 0 var(--border-radius-md) var(--border-radius-md);
}

.lang-dropdown-item:hover {
  background: var(--color-light-gray);
}

.lang-dropdown-item.active {
  background: var(--color-beige);
}

.lang-dropdown-flag {
  font-size: 1.25rem;
}

.lang-dropdown-name {
  font-size: 0.875rem;
}

/* Mobile Menu */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  transition: var(--transition-fast);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md);
  position: relative;
}

.hero-content {
  max-width: 800px;
}

.hero-title {
  font-size: clamp(3rem, 10vw, 8rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-sm);
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 1s ease forwards;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: 300;
  opacity: 0.7;
  margin-bottom: var(--spacing-lg);
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 1s ease 0.2s forwards;
}

.scroll-indicator {
  position: absolute;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  opacity: 0;
  animation: fadeInUp 1s ease 0.4s forwards;
}

.scroll-indicator span {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  opacity: 0.5;
}

.scroll-indicator::after {
  content: '';
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-accent), transparent);
  animation: scrollLine 2s ease infinite;
}

@keyframes scrollLine {
  0%, 100% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* About Section */
.about {
  padding: var(--spacing-xl) 0;
  background-color: var(--color-light-gray);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--spacing-lg);
  align-items: center;
}

.about-image {
  position: relative;
}

.about-image img {
  border-radius: var(--border-radius-lg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.about-image::before {
  content: '';
  position: absolute;
  top: -20px;
  left: -20px;
  right: 20px;
  bottom: 20px;
  border: 1px solid var(--color-accent);
  border-radius: var(--border-radius-lg);
  z-index: -1;
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--spacing-lg);
  align-items: center;
  padding: var(--spacing-md);
}

.about-image {
  position: relative;
}

.about-image img {
  width: 100%;
  border-radius: var(--border-radius-lg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.about-image::before {
  content: '';
  position: absolute;
  top: -20px;
  left: -20px;
  right: 20px;
  bottom: 20px;
  border: 1px solid var(--color-accent);
  border-radius: var(--border-radius-lg);
  z-index: -1;
}

.about-text {
  padding: var(--spacing-md);
}

.about-text h3 {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

.about-text p {
  font-size: 1.125rem;
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
  opacity: 0.8;
}

/* Compact Section Layout */
.compact-section {
  margin-bottom: var(--spacing-sm);
  text-align: center;
}

.compact-title {
  font-size: 1rem;
  margin-bottom: 0.6rem;
  color: var(--color-accent);
  font-weight: 600;
}

/* Skills Row - 紧凑横向药丸布局 */
.skills-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem;
}

.skill-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.65rem;
  background: var(--color-light-gray);
  border-radius: 16px;
  font-size: 0.75rem;
  color: var(--color-text);
  transition: all 0.25s ease;
  cursor: default;
}

.skill-pill img {
  width: 16px;
  height: 16px;
  object-fit: contain;
}

.skill-pill:hover {
  transform: translateY(-2px);
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
  background: var(--color-beige);
}

/* Education Row - 紧凑横向卡片布局 */
.education-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}

.edu-card {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.85rem;
  background: linear-gradient(135deg, var(--color-light-gray) 0%, rgba(232, 226, 213, 0.5) 100%);
  border-radius: 10px;
  border: 1px solid rgba(196, 168, 132, 0.1);
  transition: all 0.3s ease;
}

.edu-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(196, 168, 132, 0.15);
  border-color: rgba(196, 168, 132, 0.3);
}

.edu-photo {
  width: 36px;
  height: 36px;
  border-radius: 6px;
  object-fit: cover;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.edu-card:hover .edu-photo {
  transform: scale(1.05);
}

.edu-info {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
}

.edu-name {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.2;
}

.edu-major {
  font-size: 0.65rem;
  color: var(--color-accent);
  line-height: 1.3;
}

.edu-date {
  font-size: 0.6rem;
  color: rgba(61, 57, 53, 0.5);
}

.edu-flag {
  font-size: 1rem;
  opacity: 0.8;
  transition: transform 0.3s ease;
}

.edu-card:hover .edu-flag {
  transform: scale(1.1);
  opacity: 1;
}

/* Awards Row - 紧凑横向药丸布局 */
.awards-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem;
}

.award-pill {
  padding: 0.35rem 0.7rem;
  background: var(--color-light-gray);
  border-radius: 16px;
  font-size: 0.75rem;
  color: var(--color-text);
  transition: all 0.25s ease;
  cursor: default;
  border: 1px solid transparent;
}

.award-pill:hover {
  transform: translateY(-2px);
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.award-pill.award-with-certificate {
  cursor: pointer;
  border-color: rgba(196, 168, 132, 0.3);
}

.award-pill.award-with-certificate:hover {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}

/* School Modal */
.school-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  z-index: 2000;
  justify-content: center;
  align-items: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.school-modal.active {
  display: flex;
  opacity: 1;
}

.school-modal-content {
  background: var(--color-cream);
  border-radius: 16px;
  max-width: 500px;
  width: 90%;
  overflow: hidden;
  transform: scale(0.9);
  transition: transform 0.3s ease;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.school-modal.active .school-modal-content {
  transform: scale(1);
}

.school-modal-close {
  position: absolute;
  top: 15px;
  right: 20px;
  background: rgba(255, 255, 255, 0.9);
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  z-index: 10;
}

.school-modal-close:hover {
  background: var(--color-accent);
  color: white;
  transform: rotate(90deg);
}

.school-modal-image {
  width: 100%;
  height: auto;
  display: block;
}

.school-modal-info {
  padding: 1.5rem;
}

.school-modal-name {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 0.5rem 0;
}

.school-modal-major {
  font-size: 0.9rem;
  color: var(--color-accent);
  margin: 0 0 1rem 0;
  font-weight: 500;
}

.school-modal-intro {
  font-size: 0.85rem;
  color: rgba(61, 57, 53, 0.8);
  line-height: 1.7;
  margin: 0;
}

/* Make edu-card clickable */
.edu-card[data-school] {
  cursor: pointer;
}

.edu-card[data-school]:hover {
  transform: translateY(-3px) scale(1.02);
}

/* Skills Section */
.skills {
  padding: var(--spacing-lg) 0;
  background-color: var(--color-cream);
}

.skills-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

/* Education Section */
.education {
  padding: var(--spacing-lg) 0;
  background-color: var(--color-light-gray);
}

.education-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.education-item {
  background: white;
  padding: var(--spacing-md);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  transition: var(--transition-normal);
}

.education-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.education-year {
  font-size: 0.875rem;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.education-school {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xs);
}

.education-major {
  font-size: 0.875rem;
  opacity: 0.7;
}

/* Awards Section */
.awards {
  padding: var(--spacing-lg) 0;
  background-color: var(--color-cream);
}

.awards-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.award-with-certificate {
  cursor: pointer;
  position: relative;
}

.award-with-certificate:hover {
  background-color: var(--color-accent);
  color: white;
}

/* Certificate Modal */
.certificate-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
}

.certificate-modal.active {
  opacity: 1;
  visibility: visible;
}

.certificate-modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
}

.certificate-modal-content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  background: white;
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-md);
  z-index: 1;
  text-align: center;
}

.certificate-modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 40px;
  height: 40px;
  background: var(--color-light-gray);
  border: none;
  border-radius: 50%;
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.certificate-modal-close:hover {
  background: var(--color-accent);
  color: white;
}

.certificate-modal-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

.certificate-modal-image {
  max-width: 100%;
  max-height: 70vh;
  border-radius: var(--border-radius-md);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

/* Works Section */
.works {
  padding: var(--spacing-xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.filter-buttons {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.75rem 1.5rem;
  border: 1px solid var(--color-beige);
  background: transparent;
  border-radius: var(--border-radius-xl);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: white;
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--spacing-md);
}

.work-card {
  background: white;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  transition: var(--transition-normal);
  cursor: pointer;
}

.work-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.work-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
}

.work-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.work-card:hover .work-image img {
  transform: scale(1.05);
}

.work-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(61, 57, 53, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition-normal);
}

.work-card:hover .work-overlay {
  opacity: 1;
}

.work-overlay-content {
  text-align: center;
  color: white;
  transform: translateY(20px);
  transition: var(--transition-normal);
}

.work-card:hover .work-overlay-content {
  transform: translateY(0);
}

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

.work-category {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-accent);
  margin-bottom: var(--spacing-xs);
}

.work-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xs);
}

.work-description {
  font-size: 0.875rem;
  opacity: 0.7;
  line-height: 1.6;
}

/* Contact Section */
.contact {
  padding: var(--spacing-xl) 0;
  background-color: var(--color-light-gray);
  text-align: center;
}

.contact-info {
  margin-top: var(--spacing-lg);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  max-width: 600px;
  margin: 0 auto var(--spacing-lg);
}

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

.contact-item-label {
  font-size: 0.875rem;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--spacing-sm);
}

.contact-item-value {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  margin-bottom: var(--spacing-xs);
}

.contact-item-value a {
  color: var(--color-text);
  transition: var(--transition-fast);
}

.contact-item-value a:hover {
  color: var(--color-accent);
}

.contact-email {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
  display: inline-block;
  border-bottom: 1px solid var(--color-accent);
  padding-bottom: var(--spacing-xs);
  transition: var(--transition-fast);
}

.contact-email:hover {
  color: var(--color-accent);
}

/* Footer */
.footer {
  padding: var(--spacing-md) 0;
  text-align: center;
  border-top: 1px solid var(--color-beige);
}

.footer p {
  font-size: 0.875rem;
  opacity: 0.6;
}

/* Project Page Navigation */
.project-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(250, 248, 243, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(196, 168, 132, 0.1);
  padding: var(--spacing-sm) var(--spacing-md);
}

.project-nav-container {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
  gap: var(--spacing-md);
}

.back-button {
  font-size: 0.875rem;
  color: var(--color-text);
  opacity: 0.7;
  transition: var(--transition-fast);
}

.back-button:hover {
  opacity: 1;
  color: var(--color-accent);
}

.project-arrows {
  display: flex;
  gap: var(--spacing-sm);
  justify-self: end;
}

.arrow-btn {
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-beige);
  background: transparent;
  border-radius: 50%;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

/* Project Hero */
.project-hero {
  padding: calc(var(--spacing-xl) + 60px) 0 var(--spacing-lg);
  text-align: center;
}

.project-meta {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.project-meta-item {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-accent);
}

.project-meta-item:not(:last-child)::after {
  content: '·';
  margin-left: var(--spacing-md);
  opacity: 0.5;
}

.project-title {
  font-size: clamp(2rem, 5vw, 4rem);
  margin-bottom: var(--spacing-md);
}

.project-description {
  max-width: 700px;
  margin: 0 auto;
  font-size: 1.125rem;
  line-height: 1.8;
  opacity: 0.8;
}

/* Project Content */
.project-content {
  padding: var(--spacing-lg) 0;
}

.project-image {
  margin-bottom: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.project-image img {
  width: 100%;
  display: block;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.content-wrapper {
  max-width: 800px;
  margin: 0 auto var(--spacing-lg);
}

.content-wrapper h3 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
}

.content-wrapper p {
  font-size: 1.125rem;
  line-height: 1.8;
  opacity: 0.8;
  margin-bottom: var(--spacing-md);
}

/* Project Tags */
.project-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-sm);
  margin: var(--spacing-lg) 0;
}

.project-tag {
  padding: 0.5rem 1rem;
  background-color: var(--color-light-gray);
  border-radius: var(--border-radius-xl);
  font-size: 0.875rem;
  transition: var(--transition-fast);
}

.project-tag:hover {
  background-color: var(--color-beige);
}

/* Project Navigation Bottom */
.project-navigation {
  padding: var(--spacing-lg) 0;
  text-align: center;
  background-color: var(--color-light-gray);
}

.next-project-btn {
  display: inline-block;
  padding: 1rem 2rem;
  background-color: var(--color-accent);
  color: white;
  border-radius: var(--border-radius-xl);
  font-size: 1rem;
  transition: var(--transition-fast);
  margin-bottom: var(--spacing-md);
}

.next-project-btn:hover {
  background-color: var(--color-text);
  transform: translateY(-2px);
}

.back-to-works {
  font-size: 0.875rem;
  color: var(--color-text);
  opacity: 0.7;
  border-bottom: 1px solid transparent;
  transition: var(--transition-fast);
}

.back-to-works:hover {
  opacity: 1;
  border-bottom-color: var(--color-accent);
}

/* Animations */
@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Video Container */
.video-container {
  position: relative;
  width: 100%;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
  background: #000;
}

.video-container video {
  width: 100%;
  display: block;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .about-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .about-image {
    max-width: 400px;
    margin: 0 auto;
  }
  
  .about-image::before {
    display: none;
  }
  
  .project-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background-color: var(--color-cream);
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-md);
    gap: var(--spacing-sm);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  }
  
  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .hamburger {
    display: flex;
  }
  
  .works-grid {
    grid-template-columns: 1fr;
  }
  
  .filter-buttons {
    gap: var(--spacing-xs);
  }
  
  .filter-btn {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
  }
  
  .hero-title {
    font-size: clamp(2.5rem, 8vw, 4rem);
  }
  
  .project-nav-container {
    grid-template-columns: auto 1fr auto;
  }
  
  .language-switcher {
    justify-self: center;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .compact-section {
    margin-bottom: 0.75rem;
  }
  
  .compact-title {
    font-size: 0.9rem;
  }
  
  .skill-pill {
    padding: 0.3rem 0.5rem;
    font-size: 0.7rem;
  }
  
  .skill-pill img {
    width: 14px;
    height: 14px;
  }
  
  .edu-card {
    padding: 0.4rem 0.7rem;
  }
  
  .edu-photo {
    width: 32px;
    height: 32px;
  }
  
  .edu-name {
    font-size: 0.75rem;
  }
  
  .edu-major {
    font-size: 0.6rem;
  }
  
  .edu-date {
    font-size: 0.55rem;
  }
  
  .award-pill {
    padding: 0.3rem 0.55rem;
    font-size: 0.7rem;
  }
  
  /* Project page responsive adjustments */
  .project-content [style*="grid-template-columns: repeat(4"] {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  
  .project-content [style*="grid-template-columns: repeat(3"] {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  
  .project-content [style*="grid-template-columns: repeat(2"] {
    grid-template-columns: 1fr !important;
  }
  
  .project-content [style*="grid-template-columns: 1fr 1fr"] {
    grid-template-columns: 1fr !important;
  }
}

@media (max-width: 480px) {
  :root {
    --spacing-md: 1.5rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
  }
  
  .section-title {
    font-size: 1.75rem;
  }
  
  .lang-name {
    display: none;
  }
  
  .lang-current {
    padding: 0.5rem 0.75rem;
  }
  
  /* Mobile: all grids become single column */
  .project-content [style*="grid-template-columns: repeat(3"] {
    grid-template-columns: 1fr !important;
  }
  
  .project-content [style*="grid-template-columns: repeat(4"] {
    grid-template-columns: 1fr !important;
  }
}

/* Print Styles */
@media print {
  .nav, .project-nav, .scroll-indicator, .filter-buttons {
    display: none;
  }
  
  .hero {
    min-height: auto;
    padding: var(--spacing-md);
  }
  
  .fade-in {
    opacity: 1;
    transform: none;
  }
}