:root {
  --background: #0b0d10;
  --surface: #12161b;
  --surface-raised: #171c22;
  --border: #29313a;
  --text: #edf1f5;
  --muted: #9aa5b1;
  --muted-dark: #717b86; /* lightened from #68727d to meet WCAG AA 4.5:1 on --background */
  --accent: #7eb6ff;
  --accent-light: #a4ccff;
  --success: #72d6a1;
  --content-width: 1120px;
  --page-padding: 24px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  background: var(--background);
  color: var(--text);
  font-family: "DM Sans", Arial, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

code {
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
}

/* Accessibility */

.skip-link {
  position: absolute;
  top: 1rem;
  left: -999px;
  z-index: 10;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #07101c;
}

.skip-link:focus {
  left: 1rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* Navigation */

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(100%, var(--content-width));
  height: 72px;
  margin: 0 auto;
  padding: 0 var(--page-padding);
  border-bottom: 1px solid var(--border);
}

.brand {
  flex: 0 0 auto;
  font-family: "Space Grotesk", Arial, sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.08em;
}

.brand span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.55rem;
  color: var(--muted);
  font-size: 0.84rem;
}

.nav-cv {
  padding: 0.42rem 0.75rem;
  border: 1px solid var(--border);
  color: var(--text);
}

/* Hero */

.hero {
  width: min(100%, var(--content-width));
  min-height: calc(100vh - 72px);
  margin: 0 auto;
  padding: clamp(5.6rem, 14vh, 10.6rem) var(--page-padding) 4.4rem;
}

.hero-name {
  margin: 0 0 0.6rem;
  color: var(--text);
  font-family: "Space Grotesk", Arial, sans-serif;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

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

.status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 0.56rem;
  border-radius: 50%;
  background: var(--success);
}

.hero h1,
h2,
h3 {
  font-family: "Space Grotesk", Arial, sans-serif;
  line-height: 1.12;
  letter-spacing: -0.045em;
}

.hero h1 {
  max-width: 900px;
  margin: 1.5rem 0;
  font-size: clamp(2.8rem, 7vw, 5.8rem);
}

.hero h1 em {
  color: var(--accent);
  font-style: normal;
}

.hero-copy {
  max-width: 650px;
  margin: 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 1.1rem;
  min-height: 44px;
  padding: 0.7rem 1rem;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  font: 600 0.86rem "DM Sans", Arial, sans-serif;
  cursor: pointer;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease;
}

.button:hover {
  color: var(--text);
  border-color: var(--accent);
}

.button-primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #07101c;
}

.button-primary:hover {
  background: var(--accent-light);
  color: #07101c;
}

.button:disabled {
  cursor: wait;
  opacity: 0.65;
}

.hero-meta {
  display: flex;
  justify-content: space-between;
  gap: 1.25rem;
  margin-top: 5.3rem;
  color: var(--muted-dark);
  font-size: 0.78rem;
}

.meta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem;
  color: var(--muted);
}

/* Shared section styles */

.section {
  width: min(100%, var(--content-width));
  margin: 0 auto;
  padding: 6.9rem var(--page-padding);
  border-top: 1px solid var(--border);
}

.section-label {
  margin-bottom: 2.15rem;
}

.section h2 {
  margin: 0 0 2.2rem;
  font-size: clamp(2rem, 4vw, 3.5rem);
}

/* About */

.about-grid,
.section-heading {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
}

.about-grid h2 {
  margin: 0;
}

.about-copy {
  max-width: 540px;
  color: var(--muted);
}

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

.aside-note {
  margin-bottom: 0;
  color: var(--accent);
  font-family: "Space Grotesk", Arial, sans-serif;
  font-size: 0.9rem;
}

.principles-heading {
  margin: 2rem 0 0.8rem;
  color: var(--text);
  font-size: 1rem;
  letter-spacing: -0.02em;
}

.principles {
  margin: 0 0 1.5rem;
  padding: 0;
  font-size: 0.92rem;
  list-style: none;
}

.principles li {
  position: relative;
  padding: 0.25rem 0 0.25rem 0.95rem;
}

.principles li::before {
  position: absolute;
  top: 0.95em;
  left: 0;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--accent);
  content: "";
}

.focus-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 4rem;
  border: 1px solid var(--border);
  background: var(--border);
}

.focus-card {
  display: flex;
  flex-direction: column;
  padding: 1.7rem;
  background: var(--surface);
}

.focus-card:first-child {
  background: var(--surface-raised);
}

.focus-label {
  margin: 0 0 1.2rem;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.focus-card h3 {
  margin: 0 0 0.7rem;
  font-size: 1.35rem;
}

.focus-card p:not(.focus-label) {
  margin: 0 0 1.4rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.focus-card a {
  margin-top: auto;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 600;
}

/* Experience */

.timeline {
  margin-left: 0.5rem;
  border-left: 1px solid var(--border);
}

.timeline-item {
  position: relative;
  max-width: 920px;
  padding: 0 0 3.4rem 2.6rem;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-marker {
  position: absolute;
  top: 0.2rem;
  left: -5px;
  width: 9px;
  height: 9px;
  border: 2px solid var(--accent);
  border-radius: 50%;
  background: var(--background);
}

.role-head {
  display: flex;
  justify-content: space-between;
  gap: 1.25rem;
}

.role-head h3 {
  margin: 0;
  font-size: 1.35rem;
}

.company,
.date {
  color: var(--muted);
  font-size: 0.85rem;
}

.company {
  margin: 0.38rem 0 1.25rem;
}

.company span {
  color: var(--muted-dark);
}

.date {
  flex: 0 0 auto;
  white-space: nowrap;
}

.timeline-item ul {
  max-width: 820px;
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
}

.timeline-item li {
  padding: 0.3rem 0;
}

.role-intro {
  max-width: 760px;
  margin: 0 0 1rem;
  color: var(--text);
  font-size: 0.95rem;
}

.timeline-item li strong {
  color: var(--text);
  font-weight: 600;
}

.role-details {
  max-width: 820px;
  margin-top: 1.1rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.92rem;
}

.role-details summary {
  padding: 0.75rem 0;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}

.role-details summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.role-details ul {
  padding-bottom: 0.9rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.42rem;
  margin-top: 1.3rem;
}

.tags span {
  padding: 0.22rem 0.55rem;
  border: 1px solid var(--border);
  color: #abb7c3;
  font-size: 0.7rem;
}

/* Projects */

.section-heading {
  align-items: start;
  margin-bottom: 2.2rem;
}

.section-heading h2 {
  margin-bottom: 0;
}

.section-heading p,
.skills-intro > p {
  max-width: 380px;
  margin: 0;
  color: var(--muted);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.1rem;
}

.project-card,
.skill-group {
  background: var(--surface);
  border: 1px solid var(--border);
}

.project-card {
  display: flex;
  flex-direction: column;
  min-height: 430px;
  padding: 1.75rem;
  transition: border-color 160ms ease;
}

.project-card:hover,
.project-card:focus-within {
  border-color: #3a4552;
}

.project-top {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: #73808d;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

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

.project-card h3 {
  margin: 3.1rem 0 0.9rem;
  font-size: 2rem;
}

.project-summary {
  margin: 0 0 0.85rem;
  color: var(--text);
  font-size: 1.05rem;
}

.project-card p:not(.project-summary) {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.25rem;
  margin-top: auto;
  padding-top: 1.75rem;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 600;
}

.project-card p.project-note {
  margin-top: 0.6rem;
  color: var(--muted-dark);
  font-size: 0.78rem;
}

/* Skills */

.skills-intro {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 2rem;
  margin-bottom: 2.2rem;
}

.skills-intro h2 {
  margin-bottom: 0;
}

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

.skill-group {
  padding: 1.7rem;
}

.skill-group-primary {
  background: var(--surface-raised);
}

.skill-group-wide {
  grid-column: span 2;
}

.skill-number {
  margin: 0 0 1.6rem;
  color: var(--accent);
  font-family: "Space Grotesk", Arial, sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.skill-group h3 {
  margin: 0 0 1rem;
  font-size: 1.08rem;
  letter-spacing: -0.025em;
}

.skill-group ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem 1.25rem;
  margin: 0;
  padding: 0;
  color: var(--muted);
  font-size: 0.86rem;
  list-style: none;
}

.skill-group li {
  position: relative;
  padding-left: 0.85rem;
}

.skill-group li::before {
  position: absolute;
  top: 0.67em;
  left: 0;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--accent);
  content: "";
}

/* Contact */

.contact-section {
  padding-bottom: 7.5rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6.25rem;
}

.contact-grid h2 {
  margin-top: 0;
}

.contact-grid > div > p {
  max-width: 450px;
  color: var(--muted);
}

.email-link {
  display: inline-block;
  margin: 1.1rem 0;
  color: var(--accent);
  font-family: "Space Grotesk", Arial, sans-serif;
  font-size: clamp(1.1rem, 2.5vw, 1.6rem);
  font-weight: 600;
}

.social-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.contact-grid form {
  display: grid;
  gap: 0.5rem;
}

.contact-grid label {
  margin-top: 0.45rem;
  color: var(--muted);
  font-size: 0.78rem;
}

.contact-grid input,
.contact-grid textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  resize: vertical;
}

.contact-grid input:focus,
.contact-grid textarea:focus {
  border-color: var(--accent);
}

.contact-grid button {
  width: max-content;
  margin-top: 0.75rem;
}

#form-status {
  min-height: 1.6rem;
  margin: 0.3rem 0 0;
  color: var(--accent);
  font-size: 0.82rem;
}

#form-status[data-state="error"] {
  color: #f3a5a5;
}

/* Footer */

footer {
  display: flex;
  justify-content: space-between;
  gap: 1.25rem;
  width: min(100%, var(--content-width));
  margin: 0 auto;
  padding: 1.55rem var(--page-padding) 2.2rem;
  border-top: 1px solid var(--border);
  color: var(--muted-dark);
  font-size: 0.74rem;
}

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

/* Responsive layout */

@media (max-width: 820px) {
  .about-grid,
  .section-heading,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .hero {
    min-height: auto;
  }

  .hero-meta {
    margin-top: 3.5rem;
  }

  .contact-grid {
    gap: 3rem;
  }
}

@media (max-width: 700px) {
  :root {
    --page-padding: 20px;
  }

  .site-nav {
    align-items: flex-start;
    height: auto;
    gap: 1rem;
    padding-top: 1rem;
    padding-bottom: 1rem;
  }

  .nav-links {
    justify-content: flex-end;
    gap: 0.6rem 0.9rem;
    flex-wrap: wrap;
  }

  .nav-cv {
    padding: 0.25rem 0.45rem;
  }

  .hero {
    padding-top: 5.5rem;
  }

  .hero h1 {
    font-size: clamp(2.6rem, 13vw, 4.2rem);
  }

  .hero-meta {
    display: block;
    margin-top: 3rem;
  }

  .meta-links {
    margin-top: 0.8rem;
  }

  .section {
    padding-top: 5rem;
    padding-bottom: 5rem;
  }

  .role-head {
    display: block;
  }

  .date {
    display: block;
    margin-top: 0.4rem;
  }

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

  .skill-group-wide {
    grid-column: auto;
  }

  .project-card {
    min-height: 0;
  }

  .project-card h3 {
    margin-top: 2.2rem;
  }

  .skills-intro {
    display: block;
  }

  .skills-intro > p {
    margin-top: -1.35rem;
    margin-bottom: 2rem;
  }

  footer {
    display: block;
  }

  footer span {
    display: block;
    margin-top: 0.45rem;
  }
}

@media (max-width: 460px) {
  .site-nav {
    display: block;
  }

  .nav-links {
    justify-content: flex-start;
    margin-top: 0.8rem;
  }

  .timeline-item {
    padding-left: 1.8rem;
  }

  .skill-group ul {
    grid-template-columns: 1fr;
  }

  .project-links {
    display: grid;
  }
}

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

  .button,
  .project-card {
    transition: none;
  }
}