:root {
  color-scheme: light;
  --ink: #111827;
  --muted: #5b6472;
  --line: #d7dce4;
  --paper: #f7f8fb;
  --panel: #ffffff;
  --interactive: #ffffff;
  --header-bg: rgba(247, 248, 251, 0.94);
  --nav-hover: #e9edf5;
  --card-line: #e0e5ee;
  --on-strong: #ffffff;
  --primary-bg: #111827;
  --primary-text: #ffffff;
  --featured-bg: #237a57;
  --featured-muted: rgba(255, 255, 255, 0.82);
  --tag-text: #293241;
  --tag-bg: #edf1f7;
  --tag-line: #dfe5ef;
  --blue: #2457c5;
  --blue-soft: #edf2ff;
  --blue-soft-line: #dce5fb;
  --green: #237a57;
  --green-soft: #edf8f3;
  --green-soft-line: #d9eee4;
  --coral: #c94b3d;
  --coral-soft: #fff1ef;
  --coral-soft-line: #f4deda;
  --gold: #a66a00;
  --soft: #eef2f7;
  --shadow: 0 20px 50px rgba(17, 24, 39, 0.08);
  --toggle-bg: #dce3ee;
  --toggle-line: #cbd4e2;
  --toggle-thumb: #ffffff;
  --toggle-sun: #a66a00;
  --toggle-moon: #697586;
  --project-hover-shadow: 0 22px 45px rgba(36, 87, 197, 0.18);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --ink: #f3f6fb;
  --muted: #aeb8c7;
  --line: #303a49;
  --paper: #10151d;
  --panel: #171e28;
  --interactive: #171e28;
  --header-bg: rgba(16, 21, 29, 0.92);
  --nav-hover: #252f3d;
  --card-line: #303b4b;
  --on-strong: #ffffff;
  --primary-bg: #f3f6fb;
  --primary-text: #10151d;
  --featured-bg: #1d684b;
  --featured-muted: rgba(255, 255, 255, 0.78);
  --tag-text: #d5deeb;
  --tag-bg: #222c39;
  --tag-line: #344153;
  --blue: #8cafff;
  --blue-soft: #202d48;
  --blue-soft-line: #344a70;
  --green: #63d2a1;
  --green-soft: #1d342c;
  --green-soft-line: #315443;
  --coral: #ff9589;
  --coral-soft: #3d292a;
  --coral-soft-line: #63403f;
  --gold: #e5ad45;
  --soft: #202936;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.32);
  --toggle-bg: #293548;
  --toggle-line: #3b4a60;
  --toggle-thumb: #f3f6fb;
  --toggle-sun: #7f8b9d;
  --toggle-moon: #8cafff;
  --project-hover-shadow: 0 22px 45px rgba(0, 0, 0, 0.44);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--paper);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.5;
}

body,
.brand-mark,
.site-nav a,
.button,
.profile-card,
.metric-row span,
.tag-list span,
.skill-icon {
  transition:
    color 420ms ease,
    background-color 420ms ease,
    border-color 420ms ease,
    box-shadow 420ms ease;
}

.site-header,
.profile-panel,
.project-card,
.skill-card,
.timeline-item {
  transition:
    background-color 420ms ease,
    border-color 420ms ease,
    box-shadow 420ms ease;
}

.eyebrow,
.hero-text,
.profile-card span,
.profile-card.featured span,
.summary-strip > p,
.metric-row strong,
.section-heading p:not(.eyebrow),
.project-type,
.project-content > p,
.timeline-item > div p:not(.project-type),
.education-section p,
.contact-section p:not(.eyebrow),
.proof-points,
.skill-card ul {
  transition: color 420ms ease;
}

.proof-points li::before,
.skill-card li {
  transition:
    background-color 420ms ease,
    border-color 420ms ease;
}

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

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 14px clamp(18px, 4vw, 56px);
  background: var(--header-bg);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand,
.header-controls,
.site-nav,
.hero-actions,
.contact-links,
.tag-list,
.metric-row {
  display: flex;
  align-items: center;
}

.brand {
  min-width: 0;
  gap: 10px;
  font-weight: 800;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  place-items: center;
  color: var(--primary-text);
  background: var(--primary-bg);
  border-radius: 8px;
}

.header-controls {
  min-width: 0;
  justify-content: flex-end;
  gap: 10px;
}

.site-nav {
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.site-nav a {
  padding: 8px 10px;
  color: var(--muted);
  font-size: 0.93rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: 8px;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--ink);
  background: var(--nav-hover);
}

.theme-toggle {
  flex: 0 0 auto;
  padding: 0;
  cursor: pointer;
  background: transparent;
  border: 0;
  border-radius: 999px;
}

.theme-toggle:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
}

.theme-toggle-track {
  position: relative;
  display: block;
  width: 60px;
  height: 32px;
  color: var(--toggle-moon);
  background: var(--toggle-bg);
  border: 1px solid var(--toggle-line);
  border-radius: 999px;
  transition:
    color 420ms ease,
    background-color 420ms ease,
    border-color 420ms ease,
    transform 240ms ease;
}

.theme-toggle:hover .theme-toggle-track {
  transform: scale(1.04);
}

.theme-toggle:active .theme-toggle-track {
  transform: scale(0.97);
}

.theme-icon {
  position: absolute;
  top: 7px;
  z-index: 2;
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
  transition:
    color 420ms ease,
    opacity 420ms ease,
    transform 520ms cubic-bezier(0.22, 1, 0.36, 1);
}

.theme-icon-sun {
  left: 7px;
  color: var(--toggle-sun);
}

.theme-icon-moon {
  right: 7px;
  color: var(--toggle-moon);
}

.theme-toggle-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  z-index: 1;
  width: 24px;
  height: 24px;
  background: var(--toggle-thumb);
  border-radius: 50%;
  box-shadow: 0 3px 9px rgba(17, 24, 39, 0.22);
  transition:
    background-color 420ms ease,
    box-shadow 420ms ease,
    transform 520ms cubic-bezier(0.22, 1, 0.36, 1);
}

:root[data-theme="dark"] .theme-toggle-thumb {
  transform: translateX(28px);
}

:root[data-theme="dark"] .theme-icon-sun {
  opacity: 0.65;
  transform: rotate(-90deg) scale(0.8);
}

:root:not([data-theme="dark"]) .theme-icon-moon {
  opacity: 0.65;
  transform: rotate(30deg) scale(0.82);
}

main {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
}

.hero-section {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  min-height: min(760px, calc(100vh - 72px));
  padding: 58px 0 46px;
}

.hero-copy,
.profile-panel,
.section-heading,
.project-card,
.timeline-item,
.education-section {
  min-width: 0;
}

.eyebrow {
  max-width: 100%;
  margin: 0 0 12px;
  color: var(--blue);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p,
li,
strong {
  overflow-wrap: break-word;
}

.site-header > *,
main > *,
.profile-card,
.skill-card,
.project-card {
  min-width: 0;
}

h1 {
  max-width: 10ch;
  margin: 0;
  font-size: 6.4rem;
  line-height: 0.92;
  letter-spacing: 0;
}

h2 {
  margin: 0;
  font-size: 3.6rem;
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  margin: 0;
  font-size: 1.08rem;
  line-height: 1.25;
  letter-spacing: 0;
}

.hero-text {
  max-width: 760px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 1.12rem;
}

.hero-actions,
.contact-links {
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.button {
  min-height: 42px;
  padding: 10px 14px;
  color: var(--ink);
  font-weight: 800;
  text-align: center;
  text-decoration: none;
  background: var(--interactive);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.button:hover,
.button:focus-visible {
  border-color: var(--ink);
}

.button.primary {
  color: var(--primary-text);
  background: var(--primary-bg);
  border-color: var(--primary-bg);
}

.profile-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.profile-card {
  min-height: 126px;
  padding: 18px;
  overflow: hidden;
  background: var(--soft);
  border: 1px solid var(--card-line);
  border-radius: 8px;
}

.profile-card span {
  display: block;
  margin-bottom: 10px;
  color: var(--green);
  font-size: 0.75rem;
  font-weight: 900;
  text-transform: uppercase;
}

.profile-card strong {
  display: block;
  font-size: 1.05rem;
  line-height: 1.25;
  overflow-wrap: anywhere;
}

.profile-card.featured {
  grid-column: span 2;
  color: var(--on-strong);
  background: var(--featured-bg);
  border-color: var(--featured-bg);
}

.profile-card.featured span {
  color: var(--featured-muted);
}

.profile-card.featured strong {
  font-size: 1.8rem;
}

.profile-card:last-child {
  grid-column: span 2;
}

.section-block {
  padding: 84px 0;
  border-top: 1px solid var(--line);
}

.summary-strip {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  padding: 32px 0;
}

.summary-strip > p {
  max-width: 720px;
  margin: 0;
  color: var(--ink);
  font-size: 1.32rem;
  font-weight: 800;
}

.metric-row {
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.metric-row span {
  padding: 10px 12px;
  color: var(--muted);
  background: var(--interactive);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.metric-row strong {
  color: var(--ink);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(260px, 0.65fr);
  gap: 28px;
  align-items: end;
  margin-bottom: 30px;
}

.section-heading p:not(.eyebrow) {
  margin: 0;
  color: var(--muted);
}

.section-heading.title-only {
  display: block;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.project-card,
.skill-card,
.timeline-item {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.project-card {
  position: relative;
  display: block;
  overflow: hidden;
  color: inherit;
  text-decoration: none;
  cursor: pointer;
  outline: none;
  transition:
    background-color 420ms ease,
    border-color 240ms ease,
    box-shadow 300ms ease,
    transform 300ms cubic-bezier(0.22, 1, 0.36, 1);
}

.project-card::after {
  position: absolute;
  top: 14px;
  right: 14px;
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  color: var(--blue);
  font-size: 1.15rem;
  content: "\2192";
  background: var(--blue-soft);
  border: 1px solid var(--blue-soft-line);
  border-radius: 8px;
  opacity: 0;
  transform: translate(-6px, 6px);
  transition:
    color 240ms ease,
    background-color 420ms ease,
    border-color 420ms ease,
    opacity 240ms ease,
    transform 300ms cubic-bezier(0.22, 1, 0.36, 1);
}

.project-card:hover,
.project-card:focus-visible {
  border-color: var(--blue);
  box-shadow: var(--project-hover-shadow);
  transform: translateY(-6px);
}

.project-card:hover::after,
.project-card:focus-visible::after {
  opacity: 1;
  transform: translate(0, 0);
}

.project-content {
  padding: 16px;
}

.project-content > .project-type {
  padding-right: 38px;
}

.project-type {
  margin: 0 0 8px;
  color: var(--coral);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.project-content > p,
.timeline-item > div p:not(.project-type),
.education-section p,
.contact-section p:not(.eyebrow) {
  margin: 10px 0 0;
  color: var(--muted);
}

.proof-points {
  display: grid;
  gap: 8px;
  padding: 0;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
  list-style: none;
}

.proof-points li {
  position: relative;
  padding-left: 17px;
}

.proof-points li::before {
  position: absolute;
  top: 0.66em;
  left: 0;
  width: 6px;
  height: 6px;
  content: "";
  background: var(--gold);
  border-radius: 50%;
}

.tag-list {
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.tag-list span {
  padding: 6px 9px;
  color: var(--tag-text);
  font-size: 0.82rem;
  font-weight: 800;
  background: var(--tag-bg);
  border: 1px solid var(--tag-line);
  border-radius: 8px;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.skill-card {
  padding: 20px;
}

.skill-card-heading {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 14px;
}

.skill-card-heading h3 {
  margin: 0;
}

.skill-icon {
  display: grid;
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--blue);
  background: var(--blue-soft);
  border: 1px solid var(--blue-soft-line);
  border-radius: 8px;
}

.skill-icon svg {
  width: 23px;
  height: 23px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.skill-card:nth-child(2) .skill-icon,
.skill-card:nth-child(5) .skill-icon {
  color: var(--green);
  background: var(--green-soft);
  border-color: var(--green-soft-line);
}

.skill-card:nth-child(3) .skill-icon,
.skill-card:nth-child(6) .skill-icon {
  color: var(--coral);
  background: var(--coral-soft);
  border-color: var(--coral-soft-line);
}

.skill-card ul {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 0;
  color: var(--muted);
  list-style: none;
}

.skill-card li {
  padding-left: 16px;
  border-left: 3px solid var(--gold);
}

.timeline {
  display: grid;
  gap: 14px;
}

.timeline-item {
  display: grid;
  grid-template-columns: minmax(220px, 0.45fr) minmax(0, 1fr);
  gap: 24px;
  padding: 22px;
}

.education-section {
  display: grid;
}

.education-heading {
  display: flex;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
}

.education-logo {
  flex: 0 0 auto;
  width: clamp(72px, 9vw, 112px);
  height: clamp(72px, 9vw, 112px);
  object-fit: contain;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  padding: 48px 0 70px;
  border-top: 1px solid var(--line);
}

.contact-section p:not(.eyebrow) {
  max-width: 660px;
}

@media (max-width: 980px) {
  .hero-section,
  .summary-strip,
  .section-heading,
  .contact-section,
  .timeline-item {
    grid-template-columns: 1fr;
  }

  .hero-section {
    min-height: auto;
  }

  .metric-row {
    justify-content: flex-start;
  }

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

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

  .contact-links {
    margin-top: 0;
  }
}

@media (max-width: 620px) {
  main {
    width: calc(100% - 28px);
  }

  .site-header {
    display: grid;
    align-items: start;
    padding-inline: 14px;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .header-controls {
    width: 100%;
    justify-content: space-between;
  }

  .hero-section {
    padding: 48px 0 34px;
  }

  h1 {
    font-size: 3.05rem;
  }

  h2 {
    font-size: 2.2rem;
  }

  .hero-text {
    max-width: 34ch;
    font-size: 1rem;
  }

  .hero-copy .eyebrow {
    max-width: 34ch;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    max-width: 34ch;
  }

  .profile-panel {
    grid-template-columns: 1fr;
  }

  .profile-card,
  .profile-card.featured,
  .profile-card:last-child {
    grid-column: span 1;
    min-height: 96px;
  }

  .profile-card.featured strong {
    font-size: 1.24rem;
  }

  .section-block {
    padding: 48px 0;
  }

  .summary-strip {
    padding: 28px 0;
  }

  .summary-strip > p {
    font-size: 1.12rem;
  }

  .education-heading {
    gap: 14px;
    align-items: flex-start;
  }

  .education-logo {
    width: 62px;
    height: 62px;
  }

  .metric-row {
    display: grid;
    grid-template-columns: 1fr;
  }

  .project-content,
  .timeline-item,
  .skill-card {
    padding: 18px;
  }

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

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

  .contact-links {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    display: inline-flex;
    justify-content: center;
    width: 100%;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}