:root {
  color-scheme: light;
  --bg: #f7f8fa;
  --surface: #ffffff;
  --surface-muted: #eef2f6;
  --text: #111827;
  --muted: #5f6b7a;
  --line: rgba(17, 24, 39, 0.1);
  --accent: #0a84ff;
  --accent-strong: #0064d2;
  --wash-blue: rgba(10, 132, 255, 0.1);
  --wash-mint: rgba(38, 198, 154, 0.1);
  --wash-rose: rgba(255, 94, 124, 0.07);
  --wash-gold: rgba(246, 201, 69, 0.07);
  --sketch: rgba(10, 132, 255, 0.16);
  --shadow: 0 24px 70px rgba(17, 24, 39, 0.11);
  --radius: 8px;
  --max-width: 1120px;
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0d0f14;
  --surface: #151922;
  --surface-muted: #1e2430;
  --text: #f4f7fb;
  --muted: #a7b0bd;
  --line: rgba(244, 247, 251, 0.12);
  --accent: #58a6ff;
  --accent-strong: #8cc2ff;
  --wash-blue: rgba(88, 166, 255, 0.09);
  --wash-mint: rgba(61, 220, 151, 0.08);
  --wash-rose: rgba(255, 122, 162, 0.06);
  --wash-gold: rgba(246, 201, 69, 0.04);
  --sketch: rgba(140, 194, 255, 0.16);
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(115deg, var(--wash-blue) 0%, transparent 28%, var(--wash-mint) 58%, transparent 82%),
    linear-gradient(245deg, transparent 0%, var(--wash-rose) 24%, transparent 52%, var(--wash-gold) 82%, transparent 100%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.48), transparent 28%, rgba(255, 255, 255, 0.24) 68%, transparent 100%),
    var(--bg);
  color: var(--text);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
  line-height: 1.6;
  position: relative;
  transition: background 240ms ease, color 240ms ease;
}

body::before {
  background:
    linear-gradient(var(--sketch), var(--sketch)) 50% 7% / 68px 7px no-repeat,
    linear-gradient(135deg, transparent 0 28%, var(--sketch) 28% 29%, transparent 29% 100%),
    linear-gradient(45deg, transparent 0 38%, var(--sketch) 38% 39%, transparent 39% 100%),
    linear-gradient(var(--sketch), var(--sketch)) 22% 32% / 96px 1px no-repeat,
    linear-gradient(var(--sketch), var(--sketch)) 22% 43% / 136px 1px no-repeat,
    linear-gradient(var(--sketch), var(--sketch)) 22% 54% / 112px 1px no-repeat;
  border: 2px solid var(--sketch);
  border-radius: 44px;
  content: "";
  height: 520px;
  opacity: 0.46;
  pointer-events: none;
  position: fixed;
  right: max(-92px, calc((100vw - var(--max-width)) / 2 - 190px));
  top: 92px;
  transform: rotate(-10deg);
  width: 255px;
  z-index: 0;
}

body::after {
  background:
    linear-gradient(var(--sketch), var(--sketch)) 50% 8% / 52px 5px no-repeat,
    linear-gradient(135deg, transparent 0 32%, var(--sketch) 32% 33%, transparent 33% 100%),
    linear-gradient(var(--sketch), var(--sketch)) 24% 36% / 82px 1px no-repeat,
    linear-gradient(var(--sketch), var(--sketch)) 24% 48% / 116px 1px no-repeat,
    linear-gradient(var(--sketch), var(--sketch)) 24% 60% / 92px 1px no-repeat;
  border: 2px solid var(--sketch);
  border-radius: 38px;
  bottom: 10vh;
  content: "";
  height: 420px;
  left: -130px;
  opacity: 0.16;
  pointer-events: none;
  position: fixed;
  transform: rotate(9deg);
  width: 210px;
  z-index: 0;
}

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

main::before {
  background:
    linear-gradient(var(--sketch), var(--sketch)) 50% 9% / 42px 4px no-repeat,
    linear-gradient(35deg, transparent 0 34%, var(--sketch) 34% 35%, transparent 35% 100%),
    linear-gradient(var(--sketch), var(--sketch)) 26% 34% / 76px 1px no-repeat,
    linear-gradient(var(--sketch), var(--sketch)) 26% 46% / 118px 1px no-repeat,
    linear-gradient(var(--sketch), var(--sketch)) 26% 58% / 88px 1px no-repeat;
  border: 2px solid var(--sketch);
  border-radius: 36px;
  content: "";
  height: 360px;
  opacity: 0.15;
  pointer-events: none;
  position: fixed;
  right: max(4vw, calc((100vw - var(--max-width)) / 2 + 18px));
  top: 48vh;
  transform: rotate(13deg);
  width: 180px;
  z-index: 0;
}

main::after {
  background:
    linear-gradient(var(--sketch), var(--sketch)) 50% 8% / 58px 5px no-repeat,
    linear-gradient(150deg, transparent 0 30%, var(--sketch) 30% 31%, transparent 31% 100%),
    linear-gradient(25deg, transparent 0 44%, var(--sketch) 44% 45%, transparent 45% 100%),
    linear-gradient(var(--sketch), var(--sketch)) 21% 35% / 86px 1px no-repeat,
    linear-gradient(var(--sketch), var(--sketch)) 21% 48% / 126px 1px no-repeat,
    linear-gradient(var(--sketch), var(--sketch)) 21% 61% / 98px 1px no-repeat;
  border: 2px solid var(--sketch);
  border-radius: 42px;
  content: "";
  height: 470px;
  left: max(-96px, calc((100vw - var(--max-width)) / 2 - 155px));
  opacity: 0.2;
  pointer-events: none;
  position: fixed;
  top: 38vh;
  transform: rotate(-16deg);
  width: 230px;
  z-index: 0;
}

body.nav-open {
  overflow: hidden;
}

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

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

.skip-link {
  background: var(--text);
  color: var(--bg);
  left: 1rem;
  padding: 0.75rem 1rem;
  position: fixed;
  top: -5rem;
  z-index: 100;
}

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

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

.site-header {
  backdrop-filter: none;
  background: transparent;
  border-bottom: 1px solid transparent;
  left: 0;
  position: sticky;
  right: 0;
  top: 0;
  transition: border-color 180ms ease, background 180ms ease;
  z-index: 30;
}

.site-header.is-scrolled {
  backdrop-filter: saturate(150%) blur(12px);
  background: color-mix(in srgb, var(--bg) 42%, transparent);
  border-color: color-mix(in srgb, var(--line) 60%, transparent);
}

.nav {
  align-items: center;
  display: flex;
  gap: 1rem;
  margin: 0 auto;
  max-width: var(--max-width);
  min-height: 72px;
  padding: 0 1.25rem;
}

.brand {
  align-items: center;
  display: inline-flex;
  font-weight: 700;
  gap: 0.65rem;
  margin-right: auto;
}

.brand-mark {
  align-items: center;
  background: var(--text);
  border-radius: 7px;
  color: var(--bg);
  display: inline-flex;
  font-size: 0.78rem;
  height: 34px;
  justify-content: center;
  letter-spacing: 0;
  width: 34px;
}

.nav-links {
  align-items: center;
  display: flex;
  gap: 0.2rem;
}

.nav-links a {
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0.55rem 0.85rem;
}

.nav-links a:hover,
.nav-links a.active {
  background: var(--surface-muted);
  color: var(--text);
}

.theme-toggle,
.nav-toggle {
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  cursor: pointer;
  display: inline-flex;
  flex: 0 0 auto;
  height: 42px;
  justify-content: center;
  width: 42px;
}

.theme-icon {
  background: var(--text);
  border-radius: 999px;
  box-shadow: 8px -5px 0 var(--surface);
  height: 15px;
  width: 15px;
}

[data-theme="dark"] .theme-icon {
  box-shadow: 0 0 0 4px var(--surface), 8px -5px 0 transparent;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span:not(.sr-only) {
  background: var(--text);
  border-radius: 999px;
  height: 2px;
  width: 18px;
}

.section {
  padding: clamp(4.5rem, 8vw, 6.5rem) 1.25rem;
  scroll-margin-top: 80px;
}

.surface {
  background: transparent;
}

.section-inner {
  margin: 0 auto;
  max-width: var(--max-width);
}

.hero {
  min-height: auto;
  padding-bottom: 5rem;
  padding-top: 4.5rem;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  position: relative;
  z-index: 1;
}

.hero-grid,
.split-layout,
.contact-grid {
  align-items: center;
  display: grid;
  gap: 2.5rem;
  grid-template-columns: minmax(0, 1.35fr) minmax(260px, 0.65fr);
}

.eyebrow,
.placeholder-label {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  margin: 0 0 1rem;
  text-transform: uppercase;
}

.hero .eyebrow {
  text-transform: none;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  font-size: clamp(2.35rem, 3.35vw, 3.35rem);
  letter-spacing: 0;
  line-height: 0.98;
  margin-bottom: 1.25rem;
  white-space: nowrap;
}

h2 {
  font-size: clamp(2rem, 5vw, 3.7rem);
  letter-spacing: 0;
  line-height: 1.02;
  margin-bottom: 1.1rem;
  max-width: 780px;
}

h3 {
  font-size: 1.2rem;
  line-height: 1.25;
  margin-bottom: 0.35rem;
}

.hero-tagline {
  color: var(--text);
  font-size: clamp(1.2rem, 2.4vw, 1.55rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 1rem;
  max-width: 680px;
}

.hero-summary,
.body-copy p,
.timeline-item p,
.project-card p,
.contact-note {
  color: var(--muted);
  font-size: 1rem;
}

.hero-summary {
  font-size: 1.08rem;
  max-width: 650px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin: 2rem 0;
}

.button {
  align-items: center;
  border-radius: 999px;
  display: inline-flex;
  font-weight: 800;
  justify-content: center;
  min-height: 48px;
  padding: 0 1.25rem;
}

.button-primary {
  background: var(--accent);
  color: #ffffff;
}

.button-primary:hover {
  background: var(--accent-strong);
}

.button-secondary {
  border: 1px solid var(--line);
  color: var(--text);
}

.hero-stats {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  max-width: 640px;
}

.hero-stats div {
  border-top: 1px solid var(--line);
  padding-top: 1rem;
}

.hero-stats dt {
  font-size: 1.55rem;
  font-weight: 800;
}

.hero-stats dd {
  color: var(--muted);
  margin: 0;
}

.hero-visual {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  justify-self: end;
  max-width: 360px;
  overflow: hidden;
  position: relative;
  width: 100%;
}

.hero-visual img {
  aspect-ratio: 1;
  object-fit: cover;
  object-position: center top;
  width: 100%;
}

.visual-note {
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  border: 1px solid var(--line);
  border-radius: 999px;
  bottom: 1rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  left: 1rem;
  max-width: calc(100% - 2rem);
  padding: 0.45rem 0.7rem;
  position: absolute;
}

.section-heading {
  margin-bottom: 2.4rem;
}

.about-layout {
  align-items: start;
  display: grid;
  gap: 2.5rem;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
}

.split-layout {
  align-items: start;
}

.body-copy {
  max-width: 680px;
}

.about-card {
  max-width: none;
}

.about-card p:last-child {
  margin-bottom: 0;
}

.about-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.5rem;
}

.about-highlights span {
  background: var(--surface-muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 800;
  padding: 0.55rem 0.8rem;
}

.skills-grid {
  display: grid;
  gap: 0.8rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.skills-grid span {
  background: var(--surface-muted);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  font-weight: 700;
  min-height: 56px;
  padding: 1rem;
}

.timeline {
  border-left: 1px solid var(--line);
  display: grid;
  gap: 2rem;
  margin-left: 0.5rem;
  padding-left: 1.5rem;
}

.timeline-item {
  background: color-mix(in srgb, var(--surface) 78%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 150px 1fr;
  padding: 1.4rem;
  position: relative;
}

.timeline-item::before {
  background: var(--accent);
  border: 4px solid var(--bg);
  border-radius: 999px;
  content: "";
  height: 12px;
  left: calc(-1.5rem - 7px);
  position: absolute;
  top: 1.65rem;
  width: 12px;
}

.timeline-date,
.muted,
.tech-stack {
  color: var(--muted);
  font-weight: 700;
}

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

.project-card,
.contact-form {
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--surface) 74%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.surface .project-card,
.surface .contact-form {
  background: color-mix(in srgb, var(--surface) 70%, transparent);
}

.project-card {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 76px 1fr;
  min-height: 245px;
  padding: 1.25rem;
}

.app-icon {
  align-items: center;
  border-radius: 18px;
  color: #ffffff;
  display: inline-flex;
  font-weight: 800;
  height: 64px;
  justify-content: center;
  width: 64px;
}

.app-icon.blue {
  background: linear-gradient(135deg, #0a84ff, #42d4ff);
}

.app-icon.green {
  background: linear-gradient(135deg, #0f9f6e, #8fd14f);
}

.app-icon.violet {
  background: linear-gradient(135deg, #6f4bff, #ff5ebc);
}

.app-icon.orange {
  background: linear-gradient(135deg, #ff7a1a, #f6c945);
}

.project-content a,
.contact-links a,
.footer-links a {
  color: var(--accent);
  font-weight: 800;
}

.contact-grid {
  align-items: start;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.contact-form {
  display: grid;
  gap: 1rem;
  padding: 1.4rem;
}

.contact-form label {
  display: grid;
  gap: 0.45rem;
}

.contact-form span {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 800;
}

input,
textarea {
  background: color-mix(in srgb, var(--surface) 84%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  font: inherit;
  min-height: 48px;
  padding: 0.8rem 0.9rem;
  width: 100%;
}

textarea {
  resize: vertical;
}

input:focus,
textarea:focus,
button:focus-visible,
a:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 50%, transparent);
  outline-offset: 3px;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 2rem 1.25rem;
}

.footer-inner {
  align-items: center;
  display: flex;
  gap: 1rem;
  justify-content: space-between;
}

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

.footer-links {
  display: flex;
  gap: 1rem;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 600ms ease var(--delay, 0ms), transform 600ms ease var(--delay, 0ms);
}

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

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

@media (max-width: 1100px) {
  body::before {
    opacity: 0.32;
    right: -150px;
    top: 105px;
  }

  body::after {
    opacity: 0.1;
  }

  main::before {
    opacity: 0.1;
    right: -40px;
  }

  main::after {
    left: -150px;
    opacity: 0.14;
  }

  .hero-grid {
    align-items: start;
    gap: 2rem;
    grid-template-columns: minmax(0, 1fr) minmax(260px, 320px);
  }

  h1 {
    font-size: clamp(2.45rem, 4.2vw, 3rem);
  }

  .hero-tagline {
    max-width: 620px;
  }

  .hero-summary {
    max-width: 620px;
  }

  .hero-visual {
    max-width: 320px;
  }

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

@media (max-width: 980px) {
  body::before {
    height: 430px;
    opacity: 0.22;
    right: -165px;
    width: 210px;
  }

  body::after {
    display: none;
  }

  main::before {
    opacity: 0.08;
    right: -100px;
    top: 58vh;
  }

  main::after {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
    display: none;
    flex-direction: column;
    left: 0;
    padding: 1rem 1.25rem 1.5rem;
    position: absolute;
    right: 0;
    top: 72px;
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links a {
    width: 100%;
  }

  .hero-grid,
  .about-layout,
  .split-layout,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .about-layout {
    gap: 1.5rem;
  }

  .hero {
    min-height: auto;
    padding-top: 3.25rem;
  }

  .hero-visual {
    justify-self: start;
    max-width: 440px;
  }

  .hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .skills-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 620px) {
  body::before {
    display: none;
  }

  main::before,
  main::after {
    display: none;
  }

  .section {
    padding: 4rem 1rem;
  }

  .nav {
    padding: 0 1rem;
  }

  .hero-grid,
  .about-layout,
  .split-layout,
  .contact-grid {
    gap: 2rem;
  }

  h1 {
    font-size: clamp(2.05rem, 10vw, 2.75rem);
    white-space: normal;
  }

  .hero-tagline {
    font-size: 1.18rem;
  }

  .hero-summary,
  .body-copy p,
  .timeline-item p,
  .project-card p,
  .contact-note {
    font-size: 0.96rem;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
    margin: 1.6rem 0;
  }

  .hero-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-stats dt {
    font-size: 1.35rem;
  }

  .hero-visual {
    max-width: 100%;
  }

  .visual-note {
    border-radius: var(--radius);
    font-size: 0.72rem;
  }

  .about-card {
    padding: 0;
  }

  .about-highlights {
    gap: 0.5rem;
  }

  .about-highlights span {
    font-size: 0.8rem;
    padding: 0.48rem 0.65rem;
  }

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

  .timeline {
    margin-left: 0.25rem;
    padding-left: 1rem;
  }

  .timeline-item,
  .project-card {
    grid-template-columns: 1fr;
  }

  .timeline-item::before {
    left: calc(-1rem - 7px);
  }

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