@import url("https://fonts.googleapis.com/css2?family=Afacad+Flux:wght@100..1000&display=swap");

:root {
  --font-size-xxs: 0.85rem;
  --font-size-xs: 1rem;
  --font-size-sm: 1.15rem;
  --font-size-base: 1.25rem;
  --font-size-md: 1.5rem;
  --font-size-lg: 1.65rem;
  --font-size-xl: 2.25rem;
  --font-size-xxl: 3rem;
  --font-size-xxxl: 5rem;
}

:root[data-theme="light"] {
  --secondary-50: hsl(60, 8%, 95%);
  --secondary-100: hsl(60, 10%, 90%);
  --secondary-200: hsl(60, 8%, 80%);
  --secondary-300: hsl(60, 8%, 70%);
  --secondary-400: hsl(60, 8%, 60%);
  --secondary-500: hsl(60, 8%, 50%);
  --secondary-600: hsl(60, 8%, 40%);
  --secondary-700: hsl(60, 8%, 30%);
  --secondary-800: hsl(60, 8%, 20%);
  --secondary-900: hsl(60, 10%, 10%);
  --secondary-950: hsl(60, 8%, 5%);

  --primary-50: hsl(0, 0%, 95%);
  --primary-100: hsl(60, 2%, 90%);
  --primary-200: hsl(60, 2%, 80%);
  --primary-300: hsl(60, 1%, 70%);
  --primary-400: hsl(60, 1%, 60%);
  --primary-500: hsl(60, 1%, 50%);
  --primary-600: hsl(60, 1%, 40%);
  --primary-700: hsl(60, 1%, 30%);
  --primary-800: hsl(60, 2%, 20%);
  --primary-900: hsl(60, 2%, 10%);
  --primary-950: hsl(0, 0%, 5%);

  --filter: invert(0);
  --filter-icon: brightness(0) saturate(100%) contrast(100%);
}

:root[data-theme="dark"] {
  --secondary-50: hsl(60, 8%, 5%);
  --secondary-100: hsl(60, 10%, 10%);
  --secondary-200: hsl(60, 8%, 20%);
  --secondary-300: hsl(60, 8%, 30%);
  --secondary-400: hsl(60, 8%, 40%);
  --secondary-500: hsl(60, 8%, 50%);
  --secondary-600: hsl(60, 8%, 60%);
  --secondary-700: hsl(60, 8%, 70%);
  --secondary-800: hsl(60, 8%, 80%);
  --secondary-900: hsl(60, 10%, 90%);
  --secondary-950: hsl(60, 8%, 95%);

  --primary-50: hsl(0, 0%, 5%);
  --primary-100: hsl(60, 2%, 10%);
  --primary-200: hsl(60, 2%, 20%);
  --primary-300: hsl(60, 1%, 30%);
  --primary-400: hsl(60, 1%, 40%);
  --primary-500: hsl(60, 1%, 50%);
  --primary-600: hsl(60, 1%, 60%);
  --primary-700: hsl(60, 1%, 70%);
  --primary-800: hsl(60, 2%, 80%);
  --primary-900: hsl(60, 2%, 90%);
  --primary-950: hsl(0, 0%, 95%);

  --filter: invert(85%);
  --filter-icon: brightness(0) saturate(0%) invert(0.9);
}

html,
body {
  margin: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Afacad Flux", sans-serif;
  background: linear-gradient(
    135deg,
    var(--secondary-100),
    var(--secondary-50)
  );
  color: var(--primary-900);
  transition: background-color 0.3s ease, color 0.3s ease;
}

ul {
  padding-left: 0;
}

main {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 0 0 0.9rem;
}

.page-wrapper {
  height: 100dvh;
  overflow-y: auto;
}

nav {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  background-color: var(--primary-900);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.page-wrapper::-webkit-scrollbar {
  width: 0.85rem;
}

.page-wrapper::-webkit-scrollbar-track {
  background-color: var(--secondary-100);
}

.page-wrapper::-webkit-scrollbar-thumb {
  background-color: var(--primary-900);
  border-radius: 0.5rem;
  border: 3px solid var(--secondary-100);
}

.page-wrapper::-webkit-scrollbar-thumb:hover {
  background-color: var(--primary-700);
}

:root[data-theme="light"] .page-wrapper::-webkit-scrollbar-track {
  background-color: var(--secondary-100);
}

:root[data-theme="light"] .page-wrapper::-webkit-scrollbar-thumb {
  background-color: var(--primary-900);
  border: 3px solid var(--secondary-100);
}

:root[data-theme="light"] .page-wrapper::-webkit-scrollbar-thumb:hover {
  background-color: var(--primary-700);
}

:root[data-theme="dark"] .page-wrapper::-webkit-scrollbar-track {
  background-color: var(--secondary-800);
}

:root[data-theme="dark"] .page-wrapper::-webkit-scrollbar-thumb {
  background-color: var(--primary-200);
  border: 3px solid var(--secondary-800);
}

:root[data-theme="dark"] .page-wrapper::-webkit-scrollbar-thumb:hover {
  background-color: var(--primary-300);
}

#title {
  font-weight: 600;
  color: var(--secondary-100);
  cursor: pointer;
  padding: 0.5rem 2rem;
  font-size: var(--font-size-md);
  transition: all 0.3s ease-in-out;
}

menu {
  display: flex;
  margin: 0;
  gap: 1rem;
  padding-right: 2rem;
}

menu span {
  padding: 0.5rem;
}

menu a {
  padding: 0.5rem;
  margin: -1.5rem 0;
  font-size: var(--font-size-base);
  color: var(--primary-200);
  text-decoration: none;
  transition: all 0.3s ease-in-out;
}

#title:hover,
menu a:hover {
  background-color: var(--secondary-100);
  color: var(--primary-900);
}

#hero {
  display: flex;
  gap: 2rem;
  align-items: center;
  justify-content: space-between;
  margin: 5rem 0;
}

.hero-left {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.hero-right {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

#article-content {
  font-size: var(--font-size-md);
  line-height: 1.6;
  font-weight: 400;
  text-align: justify;
}

.info {
  display: flex;
  gap: 2rem;
  margin: 1.5rem 0;
}

.interests {
  flex: 1;
}

.interests h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin: 0 0 0.75rem 0;
  color: var(--primary-800);
}

.research-interests {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.research-interests span {
  font-size: var(--font-size-sm);
  padding: 0.15rem 1rem;
  border: 1px solid var(--primary-950);
  border-radius: 2rem;
}

.education {
  flex: 1;
}

#education .contents {
  width: auto !important;
}

.education h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin: 0 0 0.75rem 0;
  color: var(--primary-800);
}

.education-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.university-logo {
  width: 3.5rem;
  aspect-ratio: 1;
  background-color: var(--primary-200);
  border-radius: 0.5rem;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem;
}

.university-logo img {
  max-width: 100%;
}

.filter-icon {
  filter: var(--filter-icon);
}

.education-details {
  flex: 1;
}

.degree {
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin: 0;
  color: var(--primary-900);
}

.university-name {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin: 0.25rem 0 0 0;
  color: var(--primary-700);
}

.profile-pic {
  webkit-filter: grayscale(100%);
  filter: grayscale(100%);
}

.profile-pic img {
  max-width: 25rem;
  border-radius: 1rem;
}

.contact-icons {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.contact-icons a {
  color: var(--primary-900);
  font-size: var(--font-size-xl);
  transition: color 0.3s ease, transform 0.3s ease;
}

.contact-icons a:hover {
  color: var(--primary-600);
  transform: translateY(-2px);
}

.container {
  border-top: 1px solid var(--primary-950);
  display: flex;
  padding: 2rem 0;
}

.type {
  width: 35%;
}

.type h3 {
  margin: 0;
  font-weight: 400;
  letter-spacing: 0.1rem;
  text-transform: uppercase;
  font-size: var(--font-size-xl);
}

.contents {
  width: 65%;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.content {
  width: 100%;
}

.title-date {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.title {
  font-size: var(--font-size-md);
  font-weight: 500;
  margin: 0;
  margin-bottom: 0.5rem;
}

.publication {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.publication .link {
  text-decoration: none;
  color: var(--primary-900);
}

.publication .publisher,
.link {
  font-size: var(--font-size-xs);
}

.date {
  font-size: var(--font-size-sm);
}

.project-image img {
  width: 100%;
  border-radius: 1rem;
  filter: grayscale(100%);
  transition: filter 0.3s ease, transform 0.3s ease;
}

.project-image img:hover {
  filter: grayscale(0%);
  transform: scale(1.01);
}

.tools {
  display: flex;
  padding: 1rem 0;
  gap: 0.5rem;
}

.tools span {
  font-size: var(--font-size-sm);
}

.tools span,
.publication .publisher,
.link,
.research-interests span {
  padding: 0.25rem 1rem;
  border: 1px solid var(--primary-950);
  border-radius: 2rem;
}

.work-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.company-logo {
  width: 8rem;
  background-color: var(--primary-200);
  border-radius: 0.5rem;
  flex-shrink: 0;
  padding: 1rem;
}

.work-details {
  flex: 1;
}

.work-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.25rem;
}

.company-name {
  font-size: var(--font-size-md);
  font-weight: 600;
  margin: 0;
}

.work-duration {
  font-size: var(--font-size-sm);
  color: var(--primary-700);
}

.work-role {
  font-size: var(--font-size-sm);
  color: var(--primary-600);
  margin: 0;
}

.abstract p {
  font-size: var(--font-size-sm);
  text-align: justify;
}

.authors h4 {
  margin: 0;
  margin-bottom: 0.5rem;
  color: var(--primary-700);
}

footer {
  max-width: 1440px;
  margin: 0 auto;
  padding: 2rem 0;
  border-top: 1px solid var(--primary-950);
  display: flex;
  align-items: last baseline;
  justify-content: space-between;
  margin-top: auto;
}

#copyright {
  display: flex;
  flex-direction: column;
  font-size: var(--font-size-xl);
  font-weight: 600;
}

#local-time p {
  margin: 0;
  font-size: var(--font-size-lg);
  font-weight: 500;
  text-transform: uppercase;
}

#local-time span {
  font-size: var(--font-size-base);
}

#colophon-top {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 1rem;
}

#colophon {
  font-size: var(--font-size-sm);
}

footer p {
  margin: 0;
}

.theme {
  display: flex;
  font-size: var(--font-size-xxs);
  border: none;
  cursor: pointer;
}

.toggle {
  border: 1px solid var(--secondary-900);
  padding: 0.15rem 1rem;
  color: hsl(60, 2%, 10%);
  background-color: hsl(60, 10%, 90%);
  transition: background-color 0.3s ease, color 0.3s ease;
}

.toggle.active {
  background-color: hsl(60, 2%, 10%);
  color: hsl(60, 10%, 90%);
}

@media only screen and (max-width: 1080px) {
  html,
  body {
    overflow: visible;
  }

  main {
    padding: 0 1rem;
  }

  .page-wrapper {
    height: auto;
    overflow-y: visible;
  }

  #title {
    width: 100%;
    font-size: var(--font-size-xxs);
    padding: 0.5rem 1rem;
  }

  menu {
    padding-left: 0;
    padding-right: 0;
    gap: 0;
  }

  menu a {
    width: 100%;
    text-align: center;
    padding: 0.5rem 1rem;
    margin: 0;
    font-size: var(--font-size-xxs);
  }

  #hero {
    flex-direction: column;
    align-items: center;
    margin: 2rem 0;
    gap: 0rem;
  }

  .hero-right {
    order: -1;
    margin: 1rem 0;
  }

  .hero-text {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  #article-content {
    font-size: var(--font-size-sm);
    line-height: 1.5;
    text-align: justify;
  }

  .info {
    flex-direction: column;
    align-items: center;
  }

  .contact-icons {
    margin-top: 0.5rem;
  }

  .contact-icons a {
    font-size: var(--font-size-md);
  }

  .research-interests span {
    font-size: var(--font-size-xxs);
    padding: 0.15rem 0.65rem;
  }

  .container {
    flex-direction: column;
    padding: 1rem 0;
  }

  .type {
    width: auto;
    margin-bottom: 1rem;
  }

  .type h3 {
    font-size: var(--font-size-md);
  }

  .contents {
    width: auto;
  }

  .content {
    padding: 0;
  }

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

  .date {
    font-size: var(--font-size-sm);
  }

  .project-image img {
    border-radius: 0.5rem;
  }

  .tools {
    gap: 0.25rem;
  }

  .tools span {
    font-size: var(--font-size-xxs);
  }

  .tools span {
    padding: 0.15rem 0.65rem;
  }

  .abstract p {
    font-size: var(--font-size-xs);
  }

  .profile-pic img {
    width: 20rem;
  }

  .work-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .company-name {
    font-size: var(--font-size-base);
  }

  footer {
    padding: 1rem;
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
  }

  #copyright {
    flex-direction: row;
    align-self: center;
    gap: 0.5rem;
    font-size: var(--font-size-xs);
  }

  #local-time {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  #local-time p {
    font-size: var(--font-size-sm);
  }

  #local-time span {
    font-size: var(--font-size-sm);
  }

  #colophon-top {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  #colophon {
    font-size: var(--font-size-xs);
  }
}