* { box-sizing: border-box; }

html {
  min-height: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(72px + env(safe-area-inset-top));
}

body {
  min-height: 100%;
  margin: 0;
  overflow-x: hidden;
  font-family: Arial, Helvetica, sans-serif;
  background: var(--slate);
  color: var(--ivory);
}

main {
  min-height: 100%;
}


.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  padding: 10px 14px;
  border-radius: 6px;
  background: var(--blue);
  color: #FFFFFF;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transform: translateY(calc(-100% - 24px));
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

#main-content:focus {
  outline: none;
}

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  width: 100%;
  padding-top: env(safe-area-inset-top);
  border-bottom: 1px solid rgba(148, 163, 184, 0.16);
  background: var(--navy);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.nav-inner {
  width: 100%;
  max-width: 1100px;
  height: 72px;
  margin: 0 auto;
  padding: 0 32px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 32px;
}

.nav-brand {
  width: 45px;
  height: 34px;
  display: block;
  overflow: hidden;
  background-image: url("/assets/th-logo-ivory.svg");
  background-position: center;
  background-repeat: no-repeat;
  background-size: contain;
  color: transparent;
  font-size: 0;
}

.nav-links {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 26px;
}

.nav-links a {
  color: var(--ivory);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--blue);
}

.nav-brand:focus-visible,
.nav-links a:focus-visible {
  outline: 3px solid rgba(59, 130, 246, 0.55);
  outline-offset: 4px;
  border-radius: 4px;
}

[data-theme="light"] .site-nav {
  border-bottom-color: rgba(11, 17, 32, 0.12);
  background: var(--ivory);
}

[data-theme="light"] .nav-brand {
  background-image: url("/assets/th-logo-navy.svg");
}

[data-theme="light"] .nav-links a {
  color: var(--navy);
}

[data-theme="light"] .nav-links a:hover,
[data-theme="light"] .nav-links a:focus-visible {
  color: var(--blue);
}

.container,
.about,
.experience,
.skills,
.projects,
.contact {
  min-height: 100svh;
}

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 32px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  align-items: center;
  gap: 80px;
}

.logo {
  display: block;
  width: 100%;
  max-width: 420px;
  justify-self: end;
}

h1 {
  margin: 0 0 10px;
  font-size: clamp(48px, 6vw, 64px);
  line-height: 1;
  letter-spacing: -0.035em;
}

.tagline {
  margin-bottom: 32px;
  color: var(--blue);
  font-size: 22px;
}

p {
  color: var(--gray);
  font-size: 18px;
  line-height: 1.6;
}

.intro > p { max-width: 620px; }

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-top: 32px;
}

.links a {
  color: var(--ivory);
  font-weight: bold;
  text-decoration: none;
}

.links a:hover,
.links a:focus-visible { color: var(--blue); }

.email { margin-top: 48px; }

.email a {
  color: var(--gray);
  text-decoration: none;
}

.email a:hover,
.email a:focus-visible { color: var(--ivory); }

.about,
.experience,
.skills,
.projects {
  padding: 72px 32px;
  display: flex;
  align-items: center;
}

.about { background: var(--navy); }
.experience { background: var(--slate); }
.skills { background: var(--navy); }
.projects { background: var(--slate); }

.section-content {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  margin: 0 0 12px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.section-content h2 {
  max-width: 760px;
  margin: 0 0 22px;
  font-size: clamp(34px, 4.5vw, 50px);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.experience-card {
  max-width: 860px;
  margin-top: 30px;
  padding: 28px 30px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(11, 17, 32, 0.52);
}

.experience-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
}

.experience-card h3,
.education-card h3 {
  margin: 0;
  color: var(--ivory);
  font-size: 25px;
  letter-spacing: -0.02em;
}

.experience-company {
  margin: 6px 0 0;
  color: var(--blue);
  font-size: 16px;
  font-weight: 700;
}

.experience-date {
  margin: 3px 0 0;
  color: var(--gray);
  font-size: 14px;
  white-space: nowrap;
}

.experience-summary {
  max-width: 760px;
  margin: 24px 0 16px;
}

.experience-details {
  max-width: 780px;
  margin: 0;
  padding-left: 22px;
  color: var(--gray);
}

.experience-details li {
  margin-top: 9px;
  padding-left: 4px;
  font-size: 16px;
  line-height: 1.55;
}

.education-card {
  max-width: 860px;
  margin-top: 16px;
  padding: 22px 30px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(11, 17, 32, 0.52);
}

.education-label {
  margin: 0 0 7px;
  color: var(--blue);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.education-card p:last-child {
  margin: 7px 0 0;
  font-size: 15px;
}

[data-theme="light"] .experience {
  background: var(--ivory);
}

[data-theme="light"] .experience-card,
[data-theme="light"] .education-card {
  border-color: rgba(11, 17, 32, 0.14);
  background: #FFFFFF;
  box-shadow: 0 16px 38px rgba(11, 17, 32, 0.07);
}

[data-theme="light"] .experience-card h3,
[data-theme="light"] .education-card h3 {
  color: var(--navy);
}

[data-theme="light"] .experience-details {
  color: #526176;
}

[data-theme="dark"] .experience {
  background: var(--navy);
}

.skills-intro {
  max-width: 680px;
  margin: -4px 0 26px;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.skill-card {
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(21, 30, 46, 0.72);
}

.skill-card h3 {
  margin: 0 0 15px;
  color: var(--ivory);
  font-size: 22px;
  letter-spacing: -0.02em;
}

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

.skill-list li {
  padding: 9px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  border-top: 1px solid var(--line);
  color: var(--gray);
  font-size: 15px;
  line-height: 1.35;
}

.skill-list li:first-child {
  border-top: 0;
}

.skill-list li::before {
  width: 6px;
  height: 6px;
  flex: 0 0 6px;
  border-radius: 50%;
  background: var(--blue);
  content: "";
}

[data-theme="light"] .skills {
  background: var(--ivory);
}

[data-theme="light"] .skill-card {
  border-color: rgba(11, 17, 32, 0.14);
  background: #FFFFFF;
  box-shadow: 0 16px 38px rgba(11, 17, 32, 0.07);
}

[data-theme="light"] .skill-card h3 {
  color: var(--navy);
}

[data-theme="light"] .skill-list li {
  border-top-color: rgba(11, 17, 32, 0.1);
  color: #526176;
}

[data-theme="dark"] .skills {
  background: var(--navy);
}


.contact {
  padding: 104px 32px 32px;
  display: flex;
  flex-direction: column;
  background: var(--slate);
}

.contact-content {
  flex: 1;
  display: flex;
  align-items: center;
}

.contact-layout {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(380px, 1.15fr);
  align-items: center;
  gap: 72px;
}

.contact-copy {
  max-width: 500px;
}

.contact-intro {
  max-width: 500px;
  margin: 0;
}

.contact-actions {
  display: grid;
  gap: 14px;
}

.contact-card {
  min-height: 112px;
  padding: 22px 24px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-rows: auto auto;
  align-items: center;
  gap: 7px 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(11, 17, 32, 0.52);
  color: var(--ivory);
  text-decoration: none;
  transition: border-color 180ms ease, transform 180ms ease;
}

.contact-card:hover {
  border-color: rgba(59, 130, 246, 0.72);
  transform: translateY(-3px);
}

.contact-card:focus-visible,
.site-footer a:focus-visible {
  outline: 3px solid rgba(59, 130, 246, 0.55);
  outline-offset: 4px;
}

.contact-card-label {
  color: var(--blue);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.contact-card-value {
  min-width: 0;
  overflow-wrap: anywhere;
  font-size: clamp(21px, 2.5vw, 30px);
  font-weight: 700;
  letter-spacing: -0.025em;
}

.contact-card-arrow {
  grid-column: 2;
  grid-row: 1 / 3;
  color: var(--blue);
  font-size: 28px;
  transition: transform 180ms ease;
}

.contact-card:hover .contact-card-arrow,
.contact-card:focus-visible .contact-card-arrow {
  transform: translateX(5px);
}

.site-footer {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  border-top: 1px solid var(--line);
}

.site-footer p {
  margin: 0;
  font-size: 13px;
}

.site-footer a {
  color: var(--ivory);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--blue);
}

[data-theme="light"] .contact {
  background: var(--ivory);
}

[data-theme="light"] .contact-card {
  border-color: rgba(11, 17, 32, 0.14);
  background: #FFFFFF;
  color: var(--navy);
  box-shadow: 0 16px 38px rgba(11, 17, 32, 0.07);
}

[data-theme="light"] .site-footer a {
  color: var(--navy);
}

[data-theme="light"] .site-footer a:hover,
[data-theme="light"] .site-footer a:focus-visible {
  color: var(--blue);
}

[data-theme="dark"] .contact {
  background: var(--navy);
}

.section-content > p:not(.section-label):not(.skills-intro):not(.projects-intro):not(.contact-intro) {
  max-width: 760px;
  margin: 0 0 20px;
}

.projects-intro {
  max-width: 680px;
  margin: -4px 0 24px;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.project-card {
  min-height: 220px;
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(11, 17, 32, 0.52);
  transition: border-color 180ms ease, transform 180ms ease;
}

.project-card:hover {
  border-color: rgba(59, 130, 246, 0.72);
  transform: translateY(-3px);
}

.project-number,
.project-tools {
  margin: 0;
  font-size: 11px;
  font-weight: 700;
}

.project-number { color: var(--gray); }

.project-tools {
  margin-top: 16px;
  color: var(--blue);
  letter-spacing: 0.055em;
  text-transform: uppercase;
}

.project-card h3 {
  margin: 8px 0 9px;
  font-size: 24px;
  letter-spacing: -0.02em;
}

.project-card p:not(.project-number):not(.project-tools) {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
}

.project-card a {
  margin-top: 18px;
  color: var(--ivory);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.project-card a span {
  display: inline-block;
  margin-left: 5px;
  color: var(--blue);
  transition: transform 180ms ease;
}

.project-card a:hover span,
.project-card a:focus-visible span { transform: translateX(4px); }

@media (max-width: 800px) {
  .nav-inner {
    height: 64px;
    padding: 0 24px;
    gap: 16px;
  }

  .nav-brand {
    width: 39px;
    height: 29px;
  }

  .nav-links {
    gap: 16px;
  }

  .nav-links a {
    font-size: 13px;
  }

  .nav-links a:nth-child(3),
  .nav-links a:nth-child(5) {
    display: none;
  }

  html {
    scroll-padding-top: calc(64px + env(safe-area-inset-top));
  }

  .container {
    padding: 32px 24px;
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .logo {
    max-width: 170px;
    justify-self: center;
  }

  h1 {
    font-size: 42px;
  }

  .tagline {
    margin-bottom: 20px;
    font-size: 19px;
  }

  p {
    font-size: 16px;
  }

  .links {
    gap: 20px;
    margin-top: 24px;
  }

  .email {
    margin-top: 24px;
  }

  .about,
  .experience,
  .skills,
  .projects {
    padding: calc(96px + env(safe-area-inset-top)) 24px 56px;
    align-items: flex-start;
  }

  .experience-card,
  .education-card {
    padding: 22px 20px;
  }

  .experience-heading {
    display: block;
  }

  .experience-date {
    margin-top: 10px;
    white-space: normal;
  }

  .experience-details li {
    font-size: 15px;
  }

  .skills-grid {
    grid-template-columns: 1fr;
  }

  .skill-card {
    padding: 20px;
  }

  .contact {
    padding: calc(96px + env(safe-area-inset-top)) 24px 28px;
  }

  .contact-content {
    align-items: center;
  }

  .contact-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .contact-copy {
    max-width: 620px;
  }

  .contact-actions {
    gap: 12px;
  }

  .contact-card {
    min-height: 96px;
    padding: 19px 20px;
  }

  .site-footer {
    align-items: flex-start;
  }

  .project-grid {
    grid-template-columns: 1fr;
  }

  .project-card {
    min-height: 220px;
  }
}

@media (max-width: 520px) {
  .site-footer {
    flex-direction: column;
    gap: 8px;
  }

  .nav-links a:nth-child(2),
  .nav-links a:nth-child(3),
  .nav-links a:nth-child(5) {
    display: none;
  }
}

@media (max-height: 800px) and (min-width: 801px) {
  .about {
    align-items: center;
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .experience,
  .skills,
  .projects {
    align-items: flex-start;
    padding-top: 104px;
    padding-bottom: 48px;
  }

  .section-content h2 {
    margin-bottom: 16px;
    font-size: 38px;
  }

  .projects-intro {
    margin-bottom: 18px;
  }

  .project-card {
    min-height: 190px;
    padding: 18px 20px;
  }

  .project-tools {
    margin-top: 11px;
  }

  .project-card h3 {
    font-size: 21px;
  }

  .project-card a {
    margin-top: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .skip-link,
  .project-card,
  .project-card a span,
  .contact-card,
  .contact-card-arrow {
    transition: none;
  }
}