/* Modern portfolio styles inspired by brittanychiang.com */
:root {
  --bg: #0a192f;
  --nav: #020c16;
  --text: #a8b2d1;
  --text-light: #ccd6f6;
  --muted: #8892b0;
  --accent: #64ffda;
  --accent-hover: #52e8c4;
  --white: #e6f1ff;
  --card-bg: rgba(17, 34, 64, 0.7);
  --border: rgba(100, 255, 218, 0.1);
  --container: 1100px;
  --transition: all 0.25s cubic-bezier(0.645, 0.045, 0.355, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Page Loader */
.page-loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease-out, visibility 0.5s ease-out;
}

.page-loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-content {
  text-align: center;
}

.loader-spinner {
  width: 50px;
  height: 50px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 20px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loader-text {
  color: var(--accent);
  font-family: 'Space Grotesk', monospace;
  font-size: 14px;
  letter-spacing: 2px;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 50px;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(10, 25, 47, 0.85);
  backdrop-filter: blur(10px);
  z-index: 1000;
  transition: var(--transition);
  box-shadow: 0 10px 30px -10px rgba(2, 12, 27, 0.7);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  min-height: 70px;
}

.logo {
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
  font-size: 20px;
  font-family: 'Space Grotesk', monospace;
  transition: var(--transition);
}

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

.nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav a {
  color: var(--text-light);
  text-decoration: none;
  font-weight: 500;
  font-size: 14px;
  transition: var(--transition);
  position: relative;
}

.nav a::before {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: var(--transition);
}

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

.nav a:hover::before {
  width: 100%;
}

.nav a:focus {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 2px;
}

.nav a:focus:not(:focus-visible) {
  outline: none;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--accent);
  cursor: pointer;
  padding: 10px;
  transition: var(--transition);
}

.nav-toggle:hover {
  color: var(--accent-hover);
}

.nav-toggle:focus {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 4px;
}

.hamburger {
  display: block;
  width: 25px;
  height: 2px;
  background: currentColor;
  position: relative;
  transition: var(--transition);
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 2px;
  background: currentColor;
  left: 0;
  transition: var(--transition);
}

.hamburger::before {
  top: -8px;
}

.hamburger::after {
  bottom: -8px;
}
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 0;
}

.eyebrow {
  color: var(--accent);
  margin: 0 0 20px 0;
  font-weight: 400;
  font-size: 16px;
  font-family: 'Space Grotesk', monospace;
}

.hero-title {
  font-size: clamp(40px, 8vw, 80px);
  margin: 0;
  color: var(--white);
  line-height: 1.1;
  font-weight: 700;
}

.hero-subtitle {
  margin: 10px 0 30px 0;
  color: var(--text-light);
  font-size: clamp(24px, 4vw, 50px);
  font-weight: 700;
  line-height: 1.1;
}

.hero-description {
  max-width: 540px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.6;
  margin-bottom: 40px;
}

.hero-cta {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 4px;
  text-decoration: none;
  color: var(--accent);
  border: 1px solid var(--accent);
  background: transparent;
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition);
  cursor: pointer;
}

.btn:hover {
  background: rgba(100, 255, 218, 0.1);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px -10px rgba(100, 255, 218, 0.3);
}

.btn-primary {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
}

.btn-primary:hover {
  background: rgba(100, 255, 218, 0.1);
}

.btn:focus,
.btn-primary:focus {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.btn:focus:not(:focus-visible),
.btn-primary:focus:not(:focus-visible) {
  outline: none;
}
.section-title {
  color: var(--white);
  margin: 0 0 40px 0;
  font-size: 28px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 15px;
  white-space: nowrap;
}

.section-title::after {
  content: '';
  display: block;
  width: 300px;
  height: 1px;
  background: var(--border);
  position: relative;
  top: 0;
}

.section-number {
  color: var(--accent);
  font-family: 'Space Grotesk', monospace;
  font-size: 20px;
  font-weight: 400;
}
.section-work {
  padding: 100px 0;
}

.projects-grid {
  display: grid;
  gap: 30px;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.project {
  background: var(--card-bg);
  border: 1px solid var(--border);
  padding: 30px;
  border-radius: 6px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.project:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 30px -10px rgba(2, 12, 27, 0.7);
  border-color: var(--accent);
}

.project-content {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.project-label {
  color: var(--accent);
  font-size: 13px;
  font-weight: 400;
  margin: 0 0 10px 0;
  font-family: 'Space Grotesk', monospace;
}

.project-title {
  color: var(--white);
  margin: 0 0 15px 0;
  font-size: 20px;
  font-weight: 600;
  transition: var(--transition);
}

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

.project-desc {
  color: var(--muted);
  margin: 0 0 20px 0;
  font-size: 14px;
  line-height: 1.5;
  flex-grow: 1;
}

.project-tech {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.project-tech span {
  color: var(--text-light);
  font-size: 13px;
  font-family: 'Space Grotesk', monospace;
}

.project-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition);
  align-self: flex-start;
}

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

.project-link:focus {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 2px;
}

.project-link:focus:not(:focus-visible) {
  outline: none;
}

.project-links {
  display: flex;
  gap: 15px;
  margin-top: 10px;
}

.education-section {
  margin: 30px 0;
}

.subsection-title {
  color: var(--white);
  font-size: 20px;
  margin: 25px 0 15px 0;
  font-weight: 600;
}

.education-item {
  margin-bottom: 20px;
  padding-left: 20px;
  border-left: 2px solid var(--accent);
}

.education-item h5 {
  color: var(--white);
  font-size: 18px;
  margin: 0 0 8px 0;
  font-weight: 600;
}

.education-details {
  color: var(--text-light);
  margin: 5px 0;
  font-size: 16px;
}

.education-year {
  color: var(--muted);
  font-size: 14px;
  margin: 5px 0 0 0;
  font-family: 'Space Grotesk', monospace;
}

.section-experience {
  padding: 100px 0;
}

.experience-list {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.experience-item {
  padding: 25px;
  border-radius: 6px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.experience-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 30px -10px rgba(2, 12, 27, 0.7);
  border-color: rgba(100, 255, 218, 0.3);
}

.experience-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 8px;
  flex-wrap: wrap;
  gap: 10px;
}

.experience-title {
  color: var(--white);
  font-size: 18px;
  font-weight: 600;
  margin: 0;
}

.experience-period {
  color: var(--accent);
  font-size: 13px;
  font-family: 'Space Grotesk', monospace;
  margin: 0;
  white-space: nowrap;
}

.experience-company {
  color: var(--text-light);
  font-size: 15px;
  margin: 0 0 12px 0;
  font-weight: 500;
}

.experience-desc {
  color: var(--muted);
  line-height: 1.5;
  margin: 0 0 20px 0;
  font-size: 15px;
}

.experience-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.experience-tech span {
  color: var(--text-light);
  font-size: 12px;
  font-family: 'Space Grotesk', monospace;
  background: rgba(100, 255, 218, 0.1);
  padding: 4px 10px;
  border-radius: 3px;
}

.resume-link {
  margin-top: 50px;
  text-align: center;
}

/* Skills Section */
.section-skills {
  padding: 100px 0;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.skill-category {
  background: var(--card-bg);
  border: 1px solid var(--border);
  padding: 25px;
  border-radius: 6px;
  transition: var(--transition);
}

.skill-category:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 30px -10px rgba(2, 12, 27, 0.7);
  border-color: rgba(100, 255, 218, 0.3);
}

.category-title {
  color: var(--white);
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 15px 0;
  position: relative;
  padding-bottom: 10px;
}

.category-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--accent);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-tag {
  color: var(--text-light);
  font-size: 13px;
  font-family: 'Space Grotesk', monospace;
  background: rgba(100, 255, 218, 0.1);
  padding: 6px 12px;
  border-radius: 4px;
  transition: var(--transition);
  border: 1px solid transparent;
}

.skill-tag:hover {
  background: rgba(100, 255, 218, 0.15);
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* Contact Icons Fixed Sidebar */
.contact-icons {
  position: fixed;
  left: 40px;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  z-index: 10;
}

.contact-icons::after {
  content: '';
  width: 1px;
  height: 90px;
  background: var(--text);
  display: block;
}

.contact-icons a {
  color: var(--text);
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
}

.contact-icons a:hover {
  color: var(--accent);
  transform: translateY(-3px);
}

.contact-icons a:focus {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 4px;
}

.contact-icons a:focus:not(:focus-visible) {
  outline: none;
}

.contact-icons svg {
  width: 20px;
  height: 20px;
}

.section-about {
  padding: 100px 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 60px;
  align-items: flex-start;
}

.about-text {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.6;
}

.about-text p {
  margin-bottom: 20px;
}

.about-text .inline-link {
  color: var(--accent);
  text-decoration: none;
  position: relative;
  transition: var(--transition);
}

.about-text .inline-link:hover {
  color: var(--accent-hover);
}

.about-text .inline-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--accent);
  opacity: 0.3;
  transition: var(--transition);
}

.about-text .inline-link:hover::after {
  opacity: 1;
}

.skills-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  list-style: none;
  margin-top: 20px;
  padding: 0;
}

.skills-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  color: var(--text-light);
  font-family: 'Space Grotesk', monospace;
}

.skills-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 12px;
}

.profile-photo {
  width: 100%;
  max-width: 350px;
  aspect-ratio: 1;
  border-radius: 6px;
  background: linear-gradient(135deg, #112240 0%, #1e3a5f 50%, #0a192f 100%);
  box-shadow: 0 10px 30px rgba(2, 12, 27, 0.7);
  position: relative;
  transition: var(--transition);
  overflow: hidden;
}

.profile-photo::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(100, 255, 218, 0.1);
  z-index: 1;
  opacity: 1;
  transition: var(--transition);
  mix-blend-mode: screen;
}

.profile-photo:hover::before {
  opacity: 0;
}

.profile-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  border-radius: 6px;
  display: block;
  transition: var(--transition);
  filter: grayscale(30%) contrast(1.1) brightness(0.95);
}

.profile-photo:hover img {
  filter: grayscale(0%) contrast(1) brightness(1);
  transform: scale(1.05);
}

.profile-photo::after {
  content: '';
  position: absolute;
  top: 20px;
  left: 20px;
  width: 100%;
  height: 100%;
  border: 2px solid var(--accent);
  border-radius: 6px;
  z-index: -1;
  transition: var(--transition);
}

.profile-photo:hover::after {
  top: 15px;
  left: 15px;
}
.section-contact {
  padding: 100px 0;
  text-align: center;
}

.contact-content {
  max-width: 600px;
  margin: 0 auto;
}

.contact-intro {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.5;
  margin-bottom: 30px;
}

.contact-methods {
  margin: 30px 0;
}

.contact-methods p {
  margin: 15px 0;
  color: var(--text-light);
  font-size: 15px;
}

.contact-link {
  color: var(--accent);
  text-decoration: none;
  transition: var(--transition);
  font-weight: 600;
}

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

.contact-link:focus,
.inline-link:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 2px;
}

.contact-link:focus:not(:focus-visible),
.inline-link:focus:not(:focus-visible) {
  outline: none;
}

.contact-cta {
  margin-top: 40px;
}
.site-footer {
  padding: 60px 0 40px 0;
  color: var(--muted);
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  gap: 15px;
  text-align: center;
}

.footer-quote {
  max-width: 700px;
  margin: 0 auto;
}

.quote-text {
  color: var(--text-light);
  font-size: 16px;
  font-style: italic;
  line-height: 1.6;
  margin-bottom: 20px;
  opacity: 1;
  transition: opacity 0.5s ease-in-out;
}

.footer-credits {
  color: var(--muted);
  font-size: 13px;
  opacity: 0.7;
  margin: 0;
}

.small {
  color: var(--muted);
  font-size: 14px;
}
/* Responsive Styles */
@media (max-width: 1024px) {
  .container {
    padding: 0 40px;
  }
  
  .section-title::after {
    width: 200px;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 25px;
  }
  
  .contact-icons {
    left: 20px;
    gap: 15px;
  }
  
  .contact-icons::after {
    height: 60px;
  }
  
  .nav {
    display: none;
    position: absolute;
    top: 70px;
    right: 0;
    background: var(--card-bg);
    flex-direction: column;
    padding: 20px;
    border-radius: 6px;
    box-shadow: 0 10px 30px rgba(2, 12, 27, 0.7);
    min-width: 200px;
  }
  
  .nav.active {
    display: flex;
  }
  
  .nav-toggle {
    display: block;
  }
  
  .hero {
    min-height: 90vh;
  }
  
  .hero-description {
    font-size: 16px;
  }
  
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .profile-photo {
    max-width: 250px;
    margin: 0 auto;
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .section-title {
    font-size: 28px;
  }
  
  .section-title::after {
    width: 100px;
  }
  
  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 20px;
  }
  
  .contact-icons {
    display: none;
  }
  
  .header-inner {
    padding: 15px 0;
    min-height: 60px;
  }
  
  .hero-title {
    font-size: 36px;
  }
  
  .hero-subtitle {
    font-size: 24px;
  }
  
  .hero-description {
    font-size: 15px;
  }
  
  .btn {
    padding: 12px 20px;
    font-size: 13px;
  }
  
  .section-title {
    font-size: 24px;
  }
  
  .section-title::after {
    display: none;
  }
  
  .about-text p {
    font-size: 16px;
  }
  
  .quote-text {
    font-size: 14px;
  }
  
  .section-number {
    font-size: 18px;
  }
  
  .skills-list {
    grid-template-columns: 1fr;
  }
  
  .project {
    padding: 25px;
  }
}

/* Utility Classes */
a {
  transition: var(--transition);
}

/* Smooth Fade In Animation */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

section {
  animation: fadeIn 0.6s ease-out;
}

/* Focus Styles for Accessibility */
a:focus,
button:focus {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* Selection Styles */
::selection {
  background: var(--accent);
  color: var(--bg);
}

::-moz-selection {
  background: var(--accent);
  color: var(--bg);
}