:root {
  color-scheme: dark;
  --ink: #f0f4f6;
  --muted: #9baab4;
  --faint: #7c8c96;
  --accent: #79a9bc;
  --line: rgba(174, 199, 211, 0.18);
  --profile: #091117;
  --about: #121d25;
  --projects: #0d151c;
  --blog: #111a21;
  --skills: #17232c;
  --contact: #0a1218;
  --header: rgba(9, 17, 23, 0.86);
  --max-width: 1120px;
  --header-height: 68px;
  --ease: cubic-bezier(0.2, 0.75, 0.25, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  margin: 0;
  background: var(--profile);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

body.menu-open {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  color: inherit;
  font: inherit;
}

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

.svg-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 8px 14px;
  background: var(--ink);
  color: var(--profile);
  transform: translateY(-180%);
  transition: transform 160ms ease;
}

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

.container {
  width: min(calc(100% - 48px), var(--max-width));
  margin-inline: auto;
}

.site-header {
  position: fixed;
  z-index: 50;
  top: 0;
  right: 0;
  left: 0;
  height: var(--header-height);
  border-bottom: 1px solid var(--line);
  background: var(--header);
  backdrop-filter: blur(18px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(calc(100% - 48px), var(--max-width));
  height: 100%;
  margin-inline: auto;
}

.brand {
  position: relative;
  z-index: 2;
  font-size: 1rem;
  font-weight: 760;
  letter-spacing: -0.02em;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.2vw, 28px);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(20px, 3vw, 36px);
}

.site-nav a {
  position: relative;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color 180ms ease;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 1px;
  background: var(--accent);
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--ink);
}

.site-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

.language-toggle {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 6px;
  min-height: 44px;
  padding-inline: clamp(14px, 2vw, 22px) 0;
  border: 0;
  border-left: 1px solid var(--line);
  background: transparent;
  color: var(--faint);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1;
}

.language-toggle span {
  color: var(--faint);
  transition: color 180ms ease;
}

.language-toggle .is-active {
  color: var(--ink);
}

.language-toggle:hover span:not(.is-active),
.language-toggle:focus-visible span:not(.is-active) {
  color: var(--accent);
}

.menu-button {
  display: none;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.menu-button span {
  display: block;
  width: 22px;
  height: 1px;
  margin: 6px auto;
  background: var(--ink);
  transition: transform 180ms ease;
}

.section {
  position: relative;
  padding-block: clamp(84px, 9vw, 124px);
  border-bottom: 1px solid var(--line);
}

.hero {
  display: grid;
  min-height: 0;
  padding-top: calc(var(--header-height) + 76px);
  padding-bottom: 92px;
  background:
    radial-gradient(circle at 50% 32%, rgba(121, 169, 188, 0.09), transparent 27rem),
    var(--profile);
  place-items: center;
}

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

.section-number {
  margin: 0;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.profile-image {
  --profile-image-size: clamp(108px, 11vw, 132px);

  width: var(--profile-image-size);
  height: var(--profile-image-size);
  aspect-ratio: 1;
  margin-bottom: 26px;
  object-fit: contain;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.2rem, 3.4vw, 2.75rem);
  font-weight: 780;
  letter-spacing: -0.065em;
  line-height: 1;
}

.profile-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin: 20px 0 0;
  padding: 0;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.045em;
  list-style: none;
}

.profile-meta li + li::before {
  margin-inline: 11px;
  color: var(--accent);
  content: "·";
}

.profile-links,
.contact-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
  margin-top: 28px;
}

.profile-links a,
.contact-links a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-size: 0.86rem;
  font-weight: 650;
  letter-spacing: 0.04em;
  transition: border-color 180ms ease, color 180ms ease;
}

.social-icon {
  width: 17px;
  height: 17px;
  fill: currentColor;
  flex: 0 0 auto;
}

.social-icon-x {
  width: 15px;
  height: 15px;
}

.social-icon-sizu {
  width: 17px;
  height: 17px;
}

.profile-links .icon-only-link,
.contact-links .icon-only-link {
  justify-content: center;
  width: 44px;
  min-height: 44px;
}

.profile-links a:hover,
.contact-links a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.section-about {
  background: var(--about);
}

.section-projects {
  background: var(--projects);
}

.section-blog {
  background: var(--blog);
}

.section-skills {
  background: var(--skills);
}

.section-contact {
  background: var(--contact);
}

.section-about,
.section-skills,
.section-contact {
  padding-block: clamp(68px, 7vw, 96px);
}

.split-layout {
  display: grid;
  grid-template-columns: minmax(160px, 0.42fr) minmax(0, 2fr);
  gap: clamp(40px, 5vw, 68px);
}

.section-heading h2,
.section-contact h2 {
  margin: 8px 0 0;
  color: var(--accent);
  font-size: clamp(1.75rem, 3vw, 1.9rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.02;
}

.section-heading h2::after,
.section-contact h2::after {
  display: block;
  width: 42px;
  height: 2px;
  margin-top: 22px;
  background: var(--accent);
  content: "";
}

.about-copy {
  min-width: 0;
  padding-top: 2px;
}

.about-copy p {
  max-width: 820px;
  margin: 26px 0 0;
  color: var(--muted);
  overflow-wrap: break-word;
}

.about-copy p:first-child {
  margin-top: 0;
}

.no-wrap {
  white-space: nowrap;
}

.section-heading-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
}

.project-list {
  margin-top: clamp(56px, 8vw, 96px);
  border-top: 1px solid var(--line);
}

.project-item {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr) auto;
  gap: 28px;
  align-items: start;
  padding-block: clamp(32px, 5vw, 52px);
  border-bottom: 1px solid var(--line);
  transition: color 220ms ease, padding-left 220ms var(--ease);
}

.project-item:hover {
  padding-left: 10px;
}

.project-index {
  padding-top: 6px;
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.75rem;
}

.project-main {
  display: flex;
  align-items: flex-start;
  flex-direction: column;
}

.project-title {
  font-size: clamp(1.1rem, 1.8vw, 1.3rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.2;
  overflow-wrap: anywhere;
  transition: color 180ms ease;
}

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

.project-description {
  max-width: 740px;
  margin-top: 14px;
  color: var(--muted);
  font-size: 0.96rem;
}

.project-tech {
  margin-top: 18px;
  color: var(--faint);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.72rem;
  letter-spacing: 0.035em;
}

.project-action {
  display: flex;
  align-items: flex-end;
  flex-direction: column;
  gap: 5px;
  color: var(--accent);
}

.project-arrow {
  color: var(--accent);
  font-size: 1.2rem;
  transition: transform 180ms var(--ease);
}

.project-destination {
  font-size: 0.68rem;
  font-weight: 650;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.project-item:hover .project-arrow {
  transform: translate(3px, -3px);
}

.blog-list {
  margin-top: clamp(56px, 8vw, 96px);
  border-top: 1px solid var(--line);
}

.blog-status {
  margin: 0;
  padding-block: clamp(28px, 4vw, 42px);
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
}

.blog-item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 32px;
  padding-block: clamp(28px, 4vw, 42px);
  border-bottom: 1px solid var(--line);
  transition: padding-left 220ms var(--ease);
}

.blog-item:hover {
  padding-left: 10px;
}

.blog-main {
  display: flex;
  align-items: flex-start;
  flex-direction: column;
  gap: 7px;
}

.blog-title {
  font-size: clamp(1.1rem, 1.8vw, 1.3rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  transition: color 180ms ease;
}

.blog-meta {
  color: var(--faint);
  font-size: 0.78rem;
}

.blog-action {
  display: flex;
  align-items: flex-end;
  flex-direction: column;
  gap: 5px;
  color: var(--accent);
  font-size: 0.68rem;
  font-weight: 650;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.blog-action > :first-child {
  font-size: 1.2rem;
  transition: transform 180ms var(--ease);
}

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

.blog-item:hover .blog-action > :first-child {
  transform: translate(3px, -3px);
}

.skill-groups {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(36px, 7vw, 88px);
  margin-top: clamp(42px, 5vw, 60px);
  border-top: 1px solid var(--line);
}

.skill-group {
  padding-top: 30px;
}

.skill-group h3 {
  margin: 0 0 24px;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.skill-group ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.skill-group li {
  color: var(--ink);
  font-size: 1rem;
}

.skill-group li:not(:last-child)::after {
  margin-inline: 11px;
  color: var(--faint);
  content: "/";
}

.contact-inner {
  text-align: left;
}

.section-contact h2::after {
  margin-inline: 0;
}

.section-contact p:not(.section-number) {
  margin: 26px 0 0;
  color: var(--muted);
}

.contact-links {
  justify-content: flex-start;
}

.site-footer {
  padding-block: 24px;
  background: #070d12;
  color: var(--faint);
  font-size: 0.73rem;
  letter-spacing: 0.04em;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-inner p {
  margin: 0;
}

.footer-inner a {
  transition: color 180ms ease;
}

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

.error-page {
  display: grid;
  min-height: 100svh;
  background:
    radial-gradient(circle at 50% 35%, rgba(121, 169, 188, 0.1), transparent 26rem),
    var(--profile);
  place-items: center;
}

.error-page main {
  width: min(calc(100% - 48px), 680px);
  text-align: center;
}

.error-code {
  margin: 0;
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: clamp(4.5rem, 18vw, 9rem);
  font-weight: 760;
  letter-spacing: -0.08em;
  line-height: 0.9;
}

.error-page h1 {
  margin: 30px 0 0;
  font-size: clamp(1.5rem, 5vw, 2.25rem);
}

.error-page p:not(.error-code) {
  margin: 18px 0 0;
  color: var(--muted);
}

.error-home-link {
  display: inline-flex;
  margin-top: 32px;
  padding: 11px 18px;
  border: 1px solid var(--accent);
  color: var(--ink);
  font-weight: 650;
  transition: background-color 180ms ease, color 180ms ease;
}

.error-home-link:hover {
  background: var(--accent);
  color: var(--profile);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 5px;
}

@media (max-width: 760px) {
  :root {
    --header-height: 62px;
  }

  .container,
  .header-inner {
    width: min(calc(100% - 32px), var(--max-width));
  }

  .menu-button {
    position: relative;
    z-index: 2;
    display: block;
  }

  .header-actions {
    gap: 14px;
  }

  .language-toggle {
    min-width: 58px;
    padding-inline: 7px;
    border-left: 0;
  }

  .menu-button[aria-expanded="true"] span:first-child {
    transform: translateY(3.5px) rotate(45deg);
  }

  .menu-button[aria-expanded="true"] span:last-child {
    transform: translateY(-3.5px) rotate(-45deg);
  }

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    display: grid;
    gap: 20px;
    align-content: center;
    min-height: 100svh;
    padding: 88px 32px 48px;
    background: rgba(9, 17, 23, 0.98);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-12px);
    transition: opacity 180ms ease, transform 180ms ease;
  }

  .site-nav[data-open="true"] {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-nav a {
    font-size: 1.25rem;
    letter-spacing: -0.02em;
    text-transform: none;
  }

  .site-nav a::after {
    display: none;
  }

  .hero {
    min-height: 0;
    padding-bottom: 82px;
  }

  .split-layout {
    grid-template-columns: 1fr;
    gap: 52px;
  }

  .section-heading-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .project-item {
    grid-template-columns: 34px minmax(0, 1fr) auto;
    gap: 14px;
  }

  .project-item:hover {
    padding-left: 0;
  }

  .blog-item:hover {
    padding-left: 0;
  }

  .skill-groups {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .skill-group + .skill-group {
    padding-top: 34px;
    border-top: 1px solid var(--line);
  }
}

@media (max-width: 440px) {
  .section {
    padding-block: 88px;
  }

  .section-about,
  .section-skills,
  .section-contact {
    padding-block: 68px;
  }

  .hero {
    padding-top: calc(var(--header-height) + 56px);
  }

  .hero h1 {
    max-width: 100%;
    font-size: clamp(1.5rem, 6.5vw, 1.75rem);
    overflow-wrap: anywhere;
  }

  .profile-links,
  .contact-links {
    gap: 20px;
  }

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

  .project-index {
    grid-column: 1 / -1;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0ms !important;
  }
}