:root {
  --ink: #102033;
  --ink-soft: #3a4a5c;
  --muted: #5f7083;
  --paper: #f3f6f9;
  --paper-2: #e7eef5;
  --line: rgba(16, 32, 51, 0.12);
  --accent: #1f6f8b;
  --accent-deep: #15556b;
  --hero-glow: rgba(31, 111, 139, 0.18);
  --shadow: 0 18px 50px rgba(16, 32, 51, 0.08);
  --radius: 18px;
  --shell: min(1120px, calc(100% - 2.5rem));
  --font-display: "Syne", sans-serif;
  --font-body: "Figtree", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.6;
  background:
    radial-gradient(1200px 600px at 85% -10%, rgba(31, 111, 139, 0.14), transparent 55%),
    radial-gradient(900px 500px at -5% 20%, rgba(16, 32, 51, 0.06), transparent 50%),
    linear-gradient(180deg, #eef3f7 0%, var(--paper) 42%, #f7fafc 100%);
  min-height: 100vh;
}

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

a {
  color: inherit;
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  background: var(--ink);
  color: white;
  padding: 0.6rem 0.9rem;
  z-index: 100;
  border-radius: 999px;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(243, 246, 249, 0.78);
  border-bottom: 1px solid transparent;
  transition: border-color 200ms ease, background 200ms ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(243, 246, 249, 0.92);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4.25rem;
  gap: 1rem;
}

.wordmark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.nav {
  display: flex;
  gap: 1.25rem;
}

.nav a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 160ms ease;
}

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

.hero {
  position: relative;
  isolation: isolate;
  min-height: calc(100svh - 4.25rem);
  display: grid;
  align-items: center;
  overflow: clip;
  padding: 3.5rem 0 4.5rem;
}

.hero-atmosphere {
  position: absolute;
  inset: -8% -4%;
  z-index: -1;
  background:
    linear-gradient(120deg, rgba(16, 32, 51, 0.04), transparent 40%),
    radial-gradient(ellipse 70% 55% at 78% 42%, var(--hero-glow), transparent 70%),
    radial-gradient(circle at 18% 78%, rgba(16, 32, 51, 0.05), transparent 45%);
  animation: atmosphere-drift 14s ease-in-out infinite alternate;
}

@keyframes atmosphere-drift {
  from {
    transform: translate3d(0, 0, 0) scale(1);
  }
  to {
    transform: translate3d(-1.5%, 1%, 0) scale(1.03);
  }
}

.hero-atmosphere::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(16, 32, 51, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 32, 51, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55), transparent 85%);
  pointer-events: none;
}

.hero-layout {
  display: grid;
  align-items: center;
  min-height: inherit;
}

.hero-copy {
  max-width: 42rem;
}

.hero-name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3.8rem, 11vw, 7.2rem);
  line-height: 0.9;
  letter-spacing: -0.05em;
}

.hero-lede {
  margin: 1.5rem 0 0;
  max-width: 28ch;
  color: var(--ink-soft);
  font-size: clamp(1.15rem, 2.2vw, 1.4rem);
  line-height: 1.45;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2.1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0.7rem 1.2rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.98rem;
  transition: transform 160ms ease, background 160ms ease, color 160ms ease, border-color 160ms ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--ink);
  color: #f7fafc;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--accent-deep);
}

.btn-secondary {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.45);
  color: var(--ink);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  border-color: rgba(31, 111, 139, 0.35);
  background: rgba(255, 255, 255, 0.8);
}

.section {
  padding: 5.5rem 0;
}

.section-intro {
  max-width: 38rem;
  margin-bottom: 2.5rem;
}

.about .section-intro {
  margin-bottom: 1.5rem;
}

.about .detail-list {
  max-width: 46rem;
}

.section-intro h2,
.contact-panel h2,
.skills-grid h3,
.project h3 {
  font-family: var(--font-display);
  letter-spacing: -0.03em;
}

.section-intro h2,
.contact-panel h2 {
  margin: 0 0 0.75rem;
  font-size: clamp(2rem, 4vw, 2.7rem);
  line-height: 1.1;
}

.section-intro p,
.contact-panel > p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1.08rem;
}

.detail-list {
  margin: 0;
  display: grid;
  gap: 1.35rem;
}

.detail-list > div {
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
}

.detail-list dt {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 0.3rem;
}

.detail-list dd {
  margin: 0;
  color: var(--ink-soft);
}

.project-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.project {
  display: grid;
  gap: 1.15rem;
  padding: 2rem 0;
  border-top: 1px solid var(--line);
}

.project:last-child {
  border-bottom: 1px solid var(--line);
}

.project-media {
  display: block;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #dbe4ee;
  transition: opacity 180ms ease;
}

.project-media:hover,
.project-media:focus-visible {
  opacity: 0.92;
}

.project-media img {
  width: 100%;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  object-position: top center;
}

.project-body {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.2fr) auto;
  gap: 1rem 2rem;
  align-items: start;
}

.project-text .project-body {
  padding-top: 0.25rem;
}

.project h3 {
  margin: 0 0 0.4rem;
  font-size: 1.35rem;
  line-height: 1.2;
}

.project-tags,
.project-desc {
  margin: 0;
  color: var(--ink-soft);
}

.project-tags {
  font-size: 0.92rem;
}

.project-links {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  min-width: 6.5rem;
  align-items: flex-start;
}

.project-links a {
  color: var(--accent-deep);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 160ms ease, color 160ms ease;
}

.project-links a:hover,
.project-links a:focus-visible {
  border-bottom-color: currentColor;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.5rem;
}

.skills-grid h3 {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
}

.skills-grid p {
  margin: 0;
  color: var(--ink-soft);
}

.contact {
  padding-bottom: 6rem;
}

.contact-panel {
  padding: clamp(2rem, 5vw, 3rem);
  border-radius: calc(var(--radius) + 6px);
  background:
    linear-gradient(145deg, rgba(16, 32, 51, 0.94), rgba(21, 85, 107, 0.92));
  color: #eef6fa;
  box-shadow: var(--shadow);
}

.contact-panel > p {
  color: rgba(238, 246, 250, 0.78);
  max-width: 34rem;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.35rem;
  margin-top: 1.6rem;
}

.contact-links a {
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.35);
  transition: border-color 160ms ease, opacity 160ms ease;
}

.contact-links a:hover,
.contact-links a:focus-visible {
  border-bottom-color: #fff;
}

.site-footer {
  padding: 1.5rem 0 2.25rem;
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.92rem;
}

.footer-inner p {
  margin: 0;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 650ms ease, transform 650ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 900px) {
  .project-body,
  .skills-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 2.5rem;
  }

  .project-links {
    flex-direction: row;
    gap: 1rem;
  }

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

@media (max-width: 560px) {
  :root {
    --shell: min(1120px, calc(100% - 1.5rem));
  }

  .nav {
    gap: 0.85rem;
  }

  .nav a {
    font-size: 0.88rem;
  }

  .hero-actions {
    width: 100%;
  }

  .btn {
    flex: 1 1 auto;
  }

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

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

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero-atmosphere {
    animation: none;
  }

  .btn:hover,
  .btn:focus-visible {
    transform: none;
  }
}