:root {
  --bg: #faf9f7;
  --surface: #ffffff;
  --surface-alt: #f3efea;
  --text: #2a2a2a;
  --muted: #5c6671;
  --line: #ddd6ce;
  --primary: #1e2a38;
  --primary-strong: #151f2a;
  --primary-rgb: 30, 42, 56;
  --accent: #00f0ff;
  --accent-strong: #00cfe0;
  --accent-soft: #8df7ff;
  --ink-on-accent: #0b2630;
  --accent-secondary: #6c8ea4;
  --accent-secondary-rgb: 108, 142, 164;
  --secondary: #6c8ea4;
  --secondary-strong: #567487;
  --secondary-text: #1e2a38;
  --topbar-bg: var(--bg);
  --max-width: 1120px;
  --space-1: 0.375rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --radius: 0.5rem;
  --anchor-offset: 4rem;
  --timeline-year-col: 4.25rem;
  --timeline-line: rgba(108, 142, 164, 0.58);
  --bg-image-line-width: 10px;
  --bg-image-line-angle: 42deg;
  --bg-image-repeat-step: 180px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  position: relative;
  isolation: isolate;
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Sans", sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  background-image: url("./assets/bg-desktop.jpg");
  background-position: right top;
  background-repeat: repeat-y;
}

.site-header,
.container,
.site-footer {
  position: relative;
  z-index: 1;
}

a {
  color: inherit;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.14em;
}

a:focus-visible,
button:focus-visible,
.button:focus-visible {
  outline: 3px solid var(--accent-strong);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: 0.5rem;
  top: -3rem;
  z-index: 60;
  padding: 0.45rem 0.7rem;
  border-radius: 0.35rem;
  border: 1px solid var(--line);
  background: var(--accent);
  color: var(--ink-on-accent);
  text-decoration: none;
  font-family: "Noto Sans Mono", monospace;
  font-size: 0.74rem;
}

.skip-link:focus {
  top: 0.5rem;
}

.site-header {
  position: relative;
  z-index: 50;
  overflow: visible;
  border-bottom: none;
}

.site-header::after {
  content: none;
}

.header-inner {
  width: min(var(--max-width), calc(100% - 2rem));
  margin: 0 auto;
  min-height: 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  background: var(--topbar-bg);
}

.logo {
  text-decoration: none;
  font-weight: 700;
  letter-spacing: -0.01em;
  font-size: 1.2rem;
  color: var(--secondary-text);
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.nav-links a {
  text-decoration: none;
  font-family: "Noto Sans Mono", monospace;
  font-size: 0.76rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--secondary-text);
  transition: color 140ms ease;
}

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

.container {
  width: min(var(--max-width), calc(100% - 2rem));
  margin: 0 auto;
}

.section {
  padding: var(--space-6) 0;
}

.section[id] {
  scroll-margin-top: var(--anchor-offset);
}

.eyebrow {
  margin: 0 0 var(--space-3);
  color: var(--muted);
  font-family: "Noto Sans Mono", monospace;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--text);
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.1;
  max-width: 16ch;
}

h1 span {
  display: block;
  margin-top: var(--space-2);
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  font-weight: 500;
}

h2 {
  font-size: clamp(1.3rem, 2.2vw, 1.75rem);
  margin-bottom: var(--space-4);
}

h3 {
  font-size: 1.03rem;
}

.lead,
.section-intro,
.project-collab,
.timeline-content p,
.contact-lead {
  color: var(--muted);
}

.lead {
  margin: var(--space-4) 0 0;
  max-width: 68ch;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(16rem, 1fr);
  column-gap: var(--space-6);
  row-gap: var(--space-4);
  align-items: start;
  padding-top: 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.hero-side {
  grid-column: 2;
  grid-row: 1 / span 4;
  align-self: start;
  display: grid;
  gap: var(--space-3);
}

.hero-photo {
  margin: 0;
  overflow: visible;
}

.hero-photo img {
  display: block;
  width: 100%;
  aspect-ratio: 2 / 3;
  object-fit: cover;
  object-position: center top;
  overflow: visible;
}

.github-stats a {
  display: block;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
  transition: border-color 140ms ease, transform 140ms ease;
}

.github-stats a:hover {
  border-color: var(--accent-secondary);
  transform: translateY(-1px);
}

.github-stats img {
  display: block;
  width: 100%;
  height: auto;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.4rem;
  padding: 0.4rem 0.88rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  text-decoration: none;
  font-family: "Noto Sans Mono", monospace;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  transition: background-color 140ms ease, border-color 140ms ease, color 140ms ease,
    transform 140ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--ink-on-accent);
}

.button-primary:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
  color: var(--ink-on-accent);
}

.button-secondary {
  background: var(--surface);
  border-color: var(--line);
  color: var(--text);
}

.button-secondary:hover {
  border-color: rgba(var(--accent-secondary-rgb), 0.75);
  background: var(--surface-alt);
}

.impact-list,
.credibility-list,
.project-points {
  margin: 0;
  padding-left: 1.1rem;
}

.impact-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3) var(--space-6);
}

.impact-list li,
.credibility-list li,
.project-points li {
  color: var(--muted);
}

.impact-list strong,
.project-points strong {
  color: var(--text);
}

.section-intro {
  margin: 0 0 var(--space-4);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.project-card,
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 140ms ease, transform 140ms ease;
}

.project-card {
  padding: var(--space-4);
}

.project-card:hover,
.card:hover {
  border-color: rgba(var(--accent-secondary-rgb), 0.75);
}

.project-meta,
.timeline-meta {
  margin: var(--space-2) 0 0;
  color: var(--accent-secondary);
  font-family: "Noto Sans Mono", monospace;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-collab {
  margin: var(--space-2) 0 var(--space-3);
  font-size: 0.94rem;
}

.project-points {
  display: grid;
  gap: var(--space-2);
  font-size: 0.94rem;
}

.timeline {
  display: grid;
  gap: 0;
  position: relative;
  max-width: 52rem;
  padding-right: var(--space-4);
}

.timeline::before {
  content: "";
  position: absolute;
  left: var(--timeline-year-col);
  top: 0.4rem;
  bottom: 0.4rem;
  width: 2px;
  /*background: var(--timeline-line);*/
}

.timeline-item {
  --role-color: var(--accent-secondary);
  display: grid;
  grid-template-columns: var(--timeline-year-col) minmax(0, 1fr);
  gap: 2.1rem;
  align-items: stretch;
  padding: var(--space-3) 0;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.timeline-meta {
  margin: var(--space-2) 0 var(--space-2);
}

.timeline-year {
  margin: 0;
  position: relative;
  display: block;
  width: 3.75rem;
  justify-self: end;
  transform: translateX(calc(50% + var(--year-offset, 0px)));
  z-index: 1;
  min-height: 100%;
  font-family: "Noto Sans Mono", monospace;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.timeline-year-end,
.timeline-year-start {
  position: absolute;
  left: 50%;
  color: var(--role-color);
  background: transparent;
  border: 0;
  border-radius: 0;
  line-height: 1;
  text-align: center;
  padding: 0;
  white-space: nowrap;
}

.timeline-year-suppressed {
  visibility: hidden;
}

.timeline-year-end {
  top: 0;
  transform: translate(-50%, -50%);
}

.timeline-year-start {
  bottom: 0;
  transform: translate(-50%, 150%);
}

.timeline-year::before {
  content: none;
}

.timeline-left-lines {
  position: absolute;
  top: 0.4rem;
  bottom: 0.4rem;
  left: 2.3rem;
  width: 2.8rem;
  pointer-events: none;
  z-index: 0;
}

.timeline-left-line {
  position: absolute;
  width: 2px;
  border-radius: 999px;
  transform: translateX(-50%);
  background: var(--line-color, var(--accent-secondary));
}

.timeline-content {
  margin: 0;
  padding-left: var(--space-5);
}

.timeline-item p {
  margin: 0;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
}

.card {
  padding: var(--space-4);
}

.card h3 {
  margin-bottom: var(--space-3);
}

.chip-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.chip-list li {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.15rem 0.5rem;
  font-family: "Noto Sans Mono", monospace;
  font-size: 0.73rem;
  color: var(--text);
  background: var(--surface-alt);
}

.credibility-list {
  display: grid;
  gap: var(--space-2);
}

.contact-section {
  padding-bottom: var(--space-6);
}

.contact-lead {
  margin: 0 0 var(--space-4);
  max-width: 64ch;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.site-footer {
  width: min(var(--max-width), calc(100% - 2rem));
  margin: 0 auto;
  padding: var(--space-5) 0;
}

.site-footer p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

@media print {
  .site-header,
  .hero-actions,
  .contact-links {
    display: none;
  }

  .container,
  .site-footer {
    width: 100%;
  }

  .section {
    padding: 0.8rem 0;
  }

  .project-card,
  .card,
  .timeline-item,
  .github-stats a {
    break-inside: avoid;
    border-color: var(--line);
  }
}

@media (max-width: 1020px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero-side {
    grid-column: auto;
    grid-row: auto;
    max-width: 34rem;
  }

  .impact-list,
  .skills-grid,
  .project-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  body {
    background-image: url("./assets/bg-mobile.jpg");
  }
  .bg-line {
    background-image: url("./assets/bg-mobile.jpg");
  }

  .logo {
    font-size: 2rem;
  }

  .nav-links {
    display: none;
  }

  .header-inner,
  .container,
  .site-footer {
    width: calc(100% - 1.2rem);
  }

  .section {
    padding: var(--space-5) 0;
  }

  .hero-actions,
  .contact-links {
    flex-direction: column;
  }

  .hero-photo img {
    object-position: right top;
  }

  .button {
    width: 100%;
  }

  .hero-side {
    max-width: none;
  }

  .timeline-item {
    grid-template-columns: var(--timeline-year-col) minmax(0, 1fr);
    gap: 0.7rem;
    padding-left: 0;
  }

  .timeline {
    padding-left: 0;
    padding-right: var(--space-2);
  }

  .timeline::before {
    left: var(--timeline-year-col);
  }

  .timeline-year {
    transform: translateX(calc(42% + var(--year-offset, 0px)));
  }

  .timeline-content {
    padding-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}