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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font);
  line-height: 1.7;
  background:
    radial-gradient(circle at 12% -10%, rgba(76, 96, 255, 0.18), transparent 36%),
    radial-gradient(circle at 88% 8%, rgba(122, 111, 248, 0.12), transparent 32%),
    var(--bg);
}

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

a {
  color: inherit;
}

a:focus-visible,
button:focus-visible {
  outline: var(--focus);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--bg-elev);
  padding: 0.6rem 1rem;
}

.skip:focus {
  left: 1rem;
  top: 1rem;
  z-index: 40;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--line);
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.9rem 1.5rem;
}

.logo {
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.82rem;
  color: var(--accent);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.1rem;
}

.nav a {
  text-decoration: none;
  color: var(--ink-muted);
  font-size: 0.92rem;
}

.nav a:hover {
  color: var(--ink);
}

.theme-toggle {
  border: 1px solid var(--line);
  background: var(--bg-elev);
  color: var(--ink);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  cursor: pointer;
  font: inherit;
  font-size: 0.85rem;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4.5rem;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(16rem, 0.85fr);
  gap: 2.5rem;
  align-items: center;
  padding: 2.2rem 0 3.5rem;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0;
  padding: 0.28rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--bg-elev);
  color: var(--ink-muted);
  font-size: 0.82rem;
  font-weight: 600;
}

.badge::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--accent);
}

.hero h1 {
  margin: 1rem 0 0;
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 1.15;
  letter-spacing: -0.04em;
}

.hero h1 strong {
  font-weight: 800;
}

.tagline {
  margin: 1rem 0 0;
  max-width: 36rem;
  color: var(--ink-muted);
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.6rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 2.7rem;
  padding: 0.55rem 1.15rem;
  border-radius: 0.8rem;
  text-decoration: none;
  font-weight: 600;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: color-mix(in srgb, var(--accent) 86%, #fff);
}

.btn-ghost {
  background: var(--bg-elev);
  border-color: var(--line);
}

.btn-ghost:hover {
  border-color: var(--accent);
}

.hero-panel {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  padding: 1rem;
  box-shadow: var(--shadow);
}

.hero-photo {
  overflow: hidden;
  border-radius: 0.95rem;
  background: var(--bg-soft);
}

.hero-photo img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-top: 0.9rem;
}

.metric {
  padding: 0.85rem 0.9rem;
  border-radius: var(--radius-sm);
  background: var(--bg-soft);
}

.metric strong {
  display: block;
  font-size: clamp(1.02rem, 2.2vw, 1.25rem);
  line-height: 1.25;
  letter-spacing: -0.03em;
}

.metric span {
  color: var(--ink-muted);
  font-size: 0.82rem;
}

.section {
  padding: 3.4rem 0 0;
}

.section-head {
  text-align: center;
  max-width: 38rem;
  margin: 0 auto 2rem;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  letter-spacing: -0.03em;
}

.section-head h2::after {
  content: "";
  display: block;
  width: 3.2rem;
  height: 0.28rem;
  margin: 0.7rem auto 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.section-head p {
  margin: 0.85rem 0 0;
  color: var(--ink-muted);
}

.about-copy {
  max-width: 46rem;
  margin: 0 auto;
  color: var(--ink-muted);
}

.about-copy p {
  margin: 0 0 0.9rem;
}

.info-grid,
.skill-grid,
.project-grid {
  display: grid;
  gap: 1rem;
}

.info-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 1.6rem;
}

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

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

.card,
.info-card,
.skill-card,
.project,
.cert,
.post,
.contact-card {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.info-card,
.skill-card,
.project,
.cert,
.post,
.contact-card {
  padding: 1.25rem 1.3rem;
}

.info-card {
  text-align: center;
}

.info-card .chips {
  justify-content: center;
  margin-top: 0.7rem;
}

.info-card .chips li {
  font-size: 0.8rem;
}

.icon-dot {
  width: 2.6rem;
  height: 2.6rem;
  margin: 0 auto 0.75rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
}

.info-card h3,
.skill-card h3,
.project h3 {
  margin: 0;
  font-size: 1.05rem;
}

.info-card p,
.project .meta,
.cert .meta,
.post small {
  margin: 0.35rem 0 0;
  color: var(--ink-muted);
  font-size: 0.92rem;
}

.skill-card h3 {
  color: var(--accent);
  margin-bottom: 0.85rem;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.chips li {
  border: 1px solid var(--line);
  background: var(--bg-soft);
  border-radius: 999px;
  padding: 0.28rem 0.72rem;
  font-size: 0.88rem;
}

.project-top {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  align-items: center;
}

.tool {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.2rem 0.7rem;
  font-size: 0.78rem;
  color: var(--ink-muted);
}

.kicker {
  margin: 1.1rem 0 0.55rem;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-muted);
  font-weight: 700;
}

.work {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.work li {
  padding-left: 1rem;
  border-left: 2px solid var(--accent-soft);
}

.work strong {
  display: block;
}

.work p {
  margin: 0.2rem 0 0;
  color: var(--ink-muted);
}

.outcome {
  margin: 1.1rem 0 0;
  padding: 0.9rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--bg-soft);
}

.outcome span {
  display: block;
  margin-bottom: 0.2rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.outcome p {
  margin: 0;
  color: var(--ink-muted);
}

.certs,
.posts {
  display: grid;
  gap: 0.75rem;
}

.cert,
.post {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
}

.post:hover {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
}

.cert-copy,
.post-copy {
  min-width: 0;
}

.cert strong,
.post strong {
  display: block;
}

.link-chip {
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.28rem 0.75rem;
  font-size: 0.82rem;
  color: var(--ink);
  text-decoration: none;
  background: var(--bg-soft);
}

a.link-chip:hover {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  color: var(--accent);
}

.post-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  flex: 0 0 auto;
}

.cert-view {
  padding-bottom: 3rem;
}

.cert-view .section-head h1 {
  margin: 0;
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  letter-spacing: -0.03em;
}

.cert-back {
  margin-left: auto;
  margin-right: 0.5rem;
  min-height: 2.2rem;
  padding: 0.35rem 0.9rem;
  font-size: 0.88rem;
}

.cert-figure {
  margin: 1.25rem 0 0;
  padding: 0.85rem;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.cert-figure img {
  display: block;
  width: 100%;
  max-width: 44rem;
  height: auto;
  margin: 0 auto;
  border-radius: var(--radius-sm);
  background: #fff;
}

.contact-card {
  max-width: 36rem;
  margin: 0 auto;
  text-align: center;
}

.contact-mail {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  border-radius: 0.9rem;
  background: var(--bg-soft);
  text-decoration: none;
  font-weight: 600;
}

.contact-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.1rem;
}

.contact-links a {
  min-width: 8.5rem;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  max-width: var(--max);
  margin: 3rem auto 0;
  padding: 1.4rem 1.5rem 2.4rem;
  border-top: 1px solid var(--line);
  color: var(--ink-muted);
  font-size: 0.85rem;
}

.site-footer a {
  color: var(--ink-muted);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--ink);
}

.page-404 {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem 1.5rem;
}

.page-404 .card {
  padding: 2rem 1.6rem;
  max-width: 28rem;
}

.page-404 a {
  color: var(--accent);
}

@media (max-width: 860px) {
  .hero,
  .info-grid,
  .skill-grid {
    grid-template-columns: 1fr;
  }

  .nav {
    display: none;
  }

  .hero {
    padding-top: 1.2rem;
  }

  .cert,
  .post,
  .contact-mail {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-header-inner .cert-back {
    order: 3;
    width: 100%;
    margin: 0.35rem 0 0;
  }
}

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