:root {
  --color-bg: #0b1120;
  --color-bg-soft: #111827;
  --color-panel: rgba(17, 24, 39, 0.72);
  --color-panel-solid: #111827;
  --color-panel-soft: rgba(31, 41, 55, 0.72);
  --color-border: rgba(148, 163, 184, 0.16);
  --color-border-strong: rgba(51, 65, 85, 1);
  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-text-soft: #64748b;
  --color-white: #ffffff;
  --color-accent: #38bdf8;
  --color-accent-hover: #7dd3fc;
  --shadow-soft: 0 24px 80px rgba(0, 0, 0, 0.28);
  --radius-xl: 1rem;
  --radius-2xl: 1.25rem;
  --radius-3xl: 1.5rem;
  --container: 76rem;
  --header-height: 4.75rem;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1rem);
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.12), transparent 35%),
    radial-gradient(circle at bottom right, rgba(99, 102, 241, 0.1), transparent 35%),
    var(--color-bg);
  color: var(--color-text);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

button,
input,
textarea,
select {
  font: inherit;
}

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

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(56, 189, 248, 0.75);
  outline-offset: 4px;
}

h1,
h2,
h3,
p,
ul,
dl,
dd {
  margin: 0;
}

.container {
  width: min(100% - 2rem, var(--container));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: 1rem;
  z-index: 100;
  transform: translateY(-150%);
  border-radius: 0.75rem;
  background: var(--color-accent);
  color: var(--color-bg);
  padding: 0.75rem 1rem;
  font-weight: 800;
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  border-bottom: 1px solid rgba(30, 41, 59, 0.9);
  background: rgba(11, 17, 32, 0.86);
  backdrop-filter: blur(18px);
}

.nav {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  color: var(--color-white);
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

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

.nav-list {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
  padding: 0;
  color: var(--color-text-muted);
  font-size: 0.925rem;
}

.nav-list a {
  transition: color 160ms ease;
}

.nav-list a:hover,
.nav-list a[aria-current="true"] {
  color: var(--color-accent);
}

.nav-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  place-items: center;
  gap: 0.25rem;
  border: 1px solid var(--color-border-strong);
  border-radius: 0.75rem;
  color: var(--color-text);
  background: transparent;
  cursor: pointer;
}

.nav-toggle__line {
  display: block;
  width: 1.15rem;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
}

.section {
  padding-block: 6rem;
}

.hero {
  min-height: 100vh;
  display: grid;
  align-items: center;
  padding-top: calc(var(--header-height) + 2rem);
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(20rem, 0.85fr);
  gap: 4rem;
  align-items: center;
}

.eyebrow,
.section-kicker {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.1);
  color: var(--color-accent);
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 800;
}

.section-kicker {
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

h1 {
  margin-top: 1rem;
  max-width: 60rem;
  color: var(--color-white);
  font-size: clamp(3.25rem, 7vw, 6.5rem);
  line-height: 0.95;
  letter-spacing: -0.06em;
}

h2 {
  color: var(--color-white);
  font-size: clamp(2.25rem, 4vw, 3.25rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

h3 {
  color: var(--color-white);
  font-size: 1.25rem;
  line-height: 1.25;
}

.hero__role {
  margin-top: 1.5rem;
  color: #cbd5e1;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
}

.hero__summary,
.section-copy p,
.section-heading p,
.cta p {
  max-width: 46rem;
  color: var(--color-text-muted);
  font-size: 1.075rem;
  line-height: 1.8;
}

.hero__summary {
  margin-top: 1.5rem;
}

.button-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.button-group--center {
  justify-content: center;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 3rem;
  border-radius: 0.9rem;
  padding: 0.75rem 1.25rem;
  font-size: 0.925rem;
  font-weight: 800;
  transition: transform 160ms ease, border-color 160ms ease, color 160ms ease, background 160ms ease;
}

.button-icon {
  flex: 0 0 auto;
  width: 1.05em;
  height: 1.05em;
  display: block;
}

.button:hover {
  transform: translateY(-2px);
}

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

.button--primary .button-icon {
  color: #000;
}

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

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

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

.profile-card,
.timeline-card,
.info-card,
.work-card,
.cta {
  border: 1px solid var(--color-border);
  background: var(--color-panel);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow-soft);
}

.profile-card {
  border-radius: var(--radius-3xl);
  padding: 1.5rem;
}

.profile-card__header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  border: 1px solid rgba(30, 41, 59, 0.95);
  border-radius: var(--radius-2xl);
  background: rgba(11, 17, 32, 0.78);
  padding: 1.25rem;
}

.profile-photo-wrap {
  width: 7.5rem;
  aspect-ratio: 1;
  flex: 0 0 auto;
  overflow: hidden;
  border: 2px solid rgba(56, 189, 248, 0.35);
  border-radius: 50%;
  background: #0f172a;
  box-shadow: 0 0 0 0.4rem rgba(56, 189, 248, 0.08);
}

.profile-photo {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  object-position: center center;
}

.muted-label,
.profile-card__role,
.timeline-card__header p,
.stat-grid dt {
  color: var(--color-text-soft);
}

.profile-card__name {
  margin-top: 0.25rem;
  color: var(--color-white);
  font-size: 1.1rem;
  font-weight: 800;
}

.profile-card__role {
  margin-top: 0.25rem;
  font-size: 0.95rem;
}

.focus-panel {
  margin-top: 1.5rem;
  border: 1px solid rgba(30, 41, 59, 0.95);
  border-radius: var(--radius-2xl);
  background: rgba(11, 17, 32, 0.78);
  padding: 1.5rem;
}

.focus-panel__label {
  color: var(--color-accent);
  font-weight: 800;
  font-size: 0.9rem;
}

.focus-panel h2 {
  margin-top: 0.75rem;
  font-size: 1.6rem;
}

.focus-panel p:not(.focus-panel__label) {
  margin-top: 1rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.stat-grid div {
  border-radius: 0.9rem;
  background: var(--color-panel-soft);
  padding: 1rem;
}

.stat-grid dt {
  font-size: 0.85rem;
}

.stat-grid dd {
  margin-top: 0.25rem;
  color: var(--color-white);
  font-weight: 800;
}

.section-copy,
.section-heading {
  max-width: 52rem;
}

.section-copy h2,
.section-heading h2 {
  margin-top: 1rem;
}

.section-copy p,
.section-heading p:not(.section-kicker) {
  margin-top: 1.5rem;
}

.timeline {
  display: grid;
  gap: 1rem;
  margin-top: 3rem;
}

.timeline-card,
.info-card,
.work-card {
  border-radius: var(--radius-2xl);
  padding: 1.5rem;
}

.timeline-card__header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.timeline-card time {
  flex: 0 0 auto;
  color: var(--color-accent);
  font-size: 0.9rem;
  font-weight: 800;
}

.timeline-card ul {
  margin-top: 1.25rem;
  padding-left: 1.25rem;
  color: var(--color-text-muted);
}

.timeline-card li + li {
  margin-top: 0.5rem;
}

.timeline-card > p,
.info-card p,
.work-card p {
  margin-top: 1rem;
  color: var(--color-text-muted);
  line-height: 1.75;
}

.card-grid {
  display: grid;
  gap: 1.5rem;
  margin-top: 3rem;
}

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

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

.info-card,
.work-card {
  transition: transform 160ms ease, border-color 160ms ease;
}

.info-card:hover,
.work-card:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 189, 248, 0.5);
}

.info-card h3 {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

[data-lucide] {
  width: 1.1rem;
  height: 1.1rem;
  color: var(--color-accent);
  stroke-width: 1.9;
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  margin-bottom: 1rem;
  border: 1px solid rgba(56, 189, 248, 0.22);
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.1);
  color: var(--color-accent);
}

.card-icon svg {
  width: 1.15rem;
  height: 1.15rem;
}

.certification-card h3 a {
  color: inherit;
  text-decoration: none;
}

.certification-card h3 a:hover,
.certification-card h3 a:focus-visible {
  color: var(--color-accent);
}

.certification-meta {
  display: grid;
  gap: 0.7rem;
  margin: 1rem 0;
}

.certification-meta div {
  border-left: 2px solid rgba(56, 189, 248, 0.26);
  padding-left: 0.85rem;
}

.certification-meta dt {
  color: var(--color-text-muted);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.certification-meta dd {
  margin-top: 0.16rem;
  color: var(--color-text);
  font-size: 0.92rem;
  font-weight: 700;
}

.noscript-grid {
  margin-top: 2rem;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
  padding: 0;
  list-style: none;
}

.tag-list li {
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.1);
  color: var(--color-accent);
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 800;
}

.text-link {
  display: inline-flex;
  margin-top: 1.25rem;
  color: var(--color-accent);
  font-weight: 800;
}

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

.cta {
  overflow: hidden;
  border-radius: var(--radius-3xl);
  padding: clamp(2rem, 5vw, 3.5rem);
  text-align: center;
}

.cta h2 {
  max-width: 50rem;
  margin: 1rem auto 0;
}

.cta p {
  margin: 1.5rem auto 0;
}

.cta-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem 1.5rem;
  margin-top: 2rem;
  padding: 0;
  color: var(--color-text-soft);
  list-style: none;
  font-size: 0.925rem;
}

.cta-meta li {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.site-footer {
  border-top: 1px solid rgba(30, 41, 59, 0.9);
  padding-block: 2rem;
  text-align: center;
  color: var(--color-text-soft);
  font-size: 0.925rem;
}

.reveal,
.reveal-card {
  opacity: 0;
  transform: translateY(1.5rem);
}

@media (max-width: 900px) {
  .nav-toggle {
    display: grid;
  }

  .nav-list {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    display: grid;
    gap: 0;
    visibility: hidden;
    opacity: 0;
    transform: translateY(-0.75rem);
    border-bottom: 1px solid rgba(30, 41, 59, 0.9);
    background: rgba(11, 17, 32, 0.98);
    padding: 0.75rem 1rem 1rem;
    transition: opacity 160ms ease, transform 160ms ease, visibility 160ms ease;
  }

  .nav-list.is-open {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
  }

  .nav-list a {
    display: block;
    padding: 0.85rem 0;
  }

  .hero__grid,
  .card-grid--two,
  .card-grid--three {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }
}

@media (max-width: 640px) {
  :root {
    --header-height: 4rem;
  }

  .container {
    width: min(100% - 1.25rem, var(--container));
  }

  .section {
    padding-block: 4.5rem;
  }

  .hero__grid {
    gap: 2rem;
  }

  .button,
  .button-group {
    width: 100%;
  }

  .profile-card__header,
  .timeline-card__header {
    align-items: flex-start;
    flex-direction: column;
  }

  .profile-photo-wrap {
    width: 6.75rem;
  }

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .reveal,
  .reveal-card {
    opacity: 1;
    transform: none;
  }
}