:root {
  --color-bg: #F5F8FF;
  --color-surface: #FFFFFF;
  --color-alt-surface: #E8EFFE;
  --color-border: #C7D7F5;
  --color-text: #0F1629;
  --color-muted: #4A5580;
  --color-accent: #2563EB;
  --color-accent-hover: #1A3FAA;
  --color-dark-bg: #0A0D14;
  --color-dark-surface: #13182A;
  --color-dark-alt-surface: #1A2035;
  --color-dark-border: #1E2640;
  --color-dark-text: #EDF2FF;
  --color-dark-muted: #8A96B0;
  --color-dark-accent: #60A5FA;
  --color-shadow: rgba(37, 99, 235, 0.13);
  --font-display: "Playfair Display", Georgia, serif;
  --font-body: "DM Sans", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "Courier New", monospace;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 40px;
  --space-6: 64px;
  --radius-default: 6px;
  --radius-card: 10px;
  --radius-pill: 999px;
  --page-max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.5;
  text-rendering: optimizeLegibility;
}

body::selection {
  background: var(--color-alt-surface);
  color: var(--color-accent-hover);
}

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

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

.skip-link {
  position: fixed;
  top: var(--space-3);
  left: var(--space-3);
  z-index: 10;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-default);
  background: var(--color-accent);
  color: var(--color-surface);
  font-weight: 700;
  transform: translateY(-140%);
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
  outline: 3px solid var(--color-border);
  outline-offset: 2px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 18px max(16px, calc((100vw - var(--page-max)) / 2));
  border-bottom: 1px solid var(--color-border);
  background: color-mix(in srgb, var(--color-surface) 92%, transparent);
  backdrop-filter: blur(16px);
  box-shadow: 0 10px 32px rgba(37, 99, 235, 0.08);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0;
  transition:
    color 180ms ease,
    transform 180ms ease;
}

.wordmark__mark {
  display: inline-grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
}

.wordmark__text {
  color: var(--color-text);
}

.wordmark:hover,
.wordmark:focus-visible {
  color: var(--color-accent-hover);
  outline: none;
  transform: translateY(-1px);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  color: var(--color-muted);
  font-size: 0.92rem;
  font-weight: 650;
}

.site-nav a {
  padding: var(--space-2) 0;
  border-bottom: 1px solid transparent;
  transition:
    border-color 180ms ease,
    color 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  border-color: var(--color-accent);
  color: var(--color-accent);
  outline: none;
}

main,
.site-footer {
  width: min(var(--page-max), calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  position: relative;
  overflow: hidden;
  width: 100vw;
  margin-left: calc(50% - 50vw);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 360px);
  gap: clamp(40px, 8vw, 96px);
  align-items: center;
  min-height: clamp(560px, 68vh, 720px);
  border-top: 1px solid var(--color-dark-border);
  background:
    linear-gradient(90deg, rgba(96, 165, 250, 0.055) 1px, transparent 1px),
    linear-gradient(180deg, rgba(96, 165, 250, 0.045) 1px, transparent 1px),
    linear-gradient(135deg, var(--color-dark-bg), var(--color-dark-surface));
  background-size: 80px 80px, 80px 80px, auto;
  color: var(--color-dark-text);
  padding: clamp(56px, 8vw, 96px) max(16px, calc((100vw - var(--page-max)) / 2));
}

.hero::before {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(10, 13, 20, 0), rgba(10, 13, 20, 0.35));
  content: "";
  pointer-events: none;
}

.hero__copy {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.hero h1,
.section-heading h2,
.bio-copy h2 {
  margin: 0;
  font-family: var(--font-display);
  letter-spacing: 0;
}

.hero .hero-title {
  max-width: 13ch;
  color: var(--color-dark-text);
  font-family: var(--font-body);
  font-size: clamp(4rem, 7.4vw, 7.5rem);
  font-weight: 800;
  line-height: 0.95;
}

.hero__lede {
  max-width: 760px;
  margin: var(--space-4) 0 0;
  color: var(--color-dark-text);
  font-size: clamp(1.35rem, 2.5vw, 2rem);
  font-weight: 700;
  line-height: 1.15;
}

.hero__body {
  max-width: 600px;
  margin: var(--space-4) 0 0;
  color: var(--color-dark-muted);
  font-size: clamp(1rem, 1.4vw, 1.18rem);
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin: var(--space-5) 0 0;
}

.hero-stats div {
  display: grid;
  grid-template-columns: 28px auto auto;
  gap: var(--space-2);
  align-items: center;
}

.hero-stats div::before {
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  border-radius: var(--radius-default);
  background:
    linear-gradient(135deg, rgba(96, 165, 250, 0.95), rgba(37, 99, 235, 0.48));
  box-shadow: 0 0 28px rgba(96, 165, 250, 0.36);
  color: var(--color-dark-bg);
  content: "+";
  font-weight: 800;
  line-height: 1;
}

.hero-stats dt {
  grid-column: 3;
  grid-row: 1;
  color: var(--color-dark-muted);
  font-size: 0.94rem;
  font-weight: 700;
}

.hero-stats dd {
  grid-column: 2;
  grid-row: 1;
  margin: 0;
  color: var(--color-dark-text);
  font-size: clamp(1.3rem, 2vw, 1.8rem);
  font-weight: 800;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.hero-portrait {
  position: relative;
  z-index: 1;
  justify-self: center;
  margin: 0;
}

.hero-portrait img {
  width: clamp(230px, 26vw, 340px);
  aspect-ratio: 1;
  object-fit: cover;
  object-position: center 18%;
  border: 6px solid rgba(237, 242, 255, 0.9);
  border-radius: 50%;
  box-shadow:
    0 28px 60px rgba(0, 0, 0, 0.32),
    0 0 0 1px rgba(96, 165, 250, 0.2);
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-pill);
  padding: 0 var(--space-4);
  border: 1px solid transparent;
  font-size: 0.95rem;
  font-weight: 700;
  transition:
    background 180ms ease,
    border-color 180ms ease,
    color 180ms ease,
    transform 180ms ease;
}

.button:hover,
.button:focus-visible {
  outline: none;
  transform: translateY(-1px);
}

.button--primary {
  background: var(--color-accent);
  color: var(--color-surface);
  box-shadow: 0 16px 30px var(--color-shadow);
}

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

.button--secondary {
  border-color: var(--color-border);
  color: var(--color-accent-hover);
  background: color-mix(in srgb, var(--color-surface) 68%, transparent);
}

.button--secondary:hover,
.button--secondary:focus-visible {
  border-color: var(--color-accent);
  background: var(--color-surface);
}

.button--project {
  width: max-content;
  margin-top: var(--space-4);
  border-color: var(--color-border);
  color: var(--color-accent-hover);
  background: var(--color-alt-surface);
}

.button--project:hover,
.button--project:focus-visible {
  border-color: var(--color-accent);
  background: var(--color-surface);
}

.hero .button--primary {
  background: var(--color-dark-accent);
  color: var(--color-dark-bg);
  box-shadow: 0 18px 36px rgba(96, 165, 250, 0.24);
}

.hero .button--primary:hover,
.hero .button--primary:focus-visible {
  background: color-mix(in srgb, var(--color-dark-accent) 84%, var(--color-dark-text));
}

.hero .button--secondary {
  border-color: rgba(237, 242, 255, 0.18);
  color: var(--color-dark-text);
  background: rgba(237, 242, 255, 0.1);
}

.hero .button--secondary:hover,
.hero .button--secondary:focus-visible {
  border-color: rgba(96, 165, 250, 0.7);
  background: rgba(237, 242, 255, 0.16);
}

.section {
  padding: var(--space-5) 0 var(--space-6);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(280px, 0.7fr);
  gap: var(--space-5);
  align-items: end;
  margin-bottom: var(--space-5);
}

.section-heading h2,
.bio-copy h2 {
  font-size: clamp(2.35rem, 6vw, 5.2rem);
  line-height: 0.9;
}

.section-heading p {
  margin: 0;
  color: var(--color-muted);
  font-size: 1.02rem;
}

.project-browser {
  display: grid;
  grid-template-columns: minmax(240px, 0.46fr) minmax(0, 1fr);
  gap: var(--space-5);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-5) 0;
}

.project-tabs {
  display: grid;
  align-self: start;
  gap: var(--space-2);
}

.project-tab {
  width: 100%;
  min-height: 72px;
  padding: var(--space-3);
  border: 1px solid transparent;
  border-radius: var(--radius-card);
  background: transparent;
  color: var(--color-muted);
  cursor: pointer;
  font: inherit;
  text-align: left;
  transition:
    background 180ms ease,
    border-color 180ms ease,
    color 180ms ease,
    transform 180ms ease;
}

.project-tab:hover,
.project-tab:focus-visible,
.project-tab[aria-selected="true"] {
  border-color: var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  outline: none;
  transform: translateY(-1px);
}

.project-tab__name {
  display: block;
  font-weight: 700;
}

.project-tab__status {
  display: block;
  margin-top: var(--space-1);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
}

.project-detail {
  min-height: 390px;
  border-radius: var(--radius-card);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: 0 22px 48px var(--color-shadow);
  padding: clamp(24px, 5vw, 48px);
}

.project-visual {
  overflow: hidden;
  margin: 0 0 var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-alt-surface);
}

.project-visual img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transform: scale(1.01);
}

.project-detail__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.meta-chip {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  padding: 0 var(--space-3);
  color: var(--color-accent-hover);
  background: var(--color-alt-surface);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
}

.project-detail h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 5vw, 4.45rem);
  line-height: 0.92;
}

.project-detail__summary {
  max-width: 720px;
  margin: var(--space-4) 0 0;
  color: var(--color-text);
  font-size: clamp(1.16rem, 2vw, 1.55rem);
  font-weight: 650;
  line-height: 1.2;
}

.project-detail__description {
  max-width: 760px;
  margin: var(--space-4) 0 0;
  color: var(--color-muted);
  font-size: 1.02rem;
}

.project-detail__focus {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
  margin: var(--space-5) 0 0;
  padding: 0;
  list-style: none;
}

.project-detail__focus li {
  min-height: 92px;
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-3);
  color: var(--color-muted);
  font-size: 0.95rem;
}

.project-detail__focus strong {
  display: block;
  margin-bottom: var(--space-1);
  color: var(--color-text);
  font-size: 0.98rem;
}

.about {
  display: grid;
  grid-template-columns: minmax(220px, 330px) minmax(0, 1fr);
  gap: clamp(32px, 8vw, 96px);
  align-items: center;
}

.bio-media {
  margin: 0;
}

.bio-media__stack {
  position: relative;
  width: min(100%, 290px);
  aspect-ratio: 242 / 358;
  overflow: hidden;
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  background: var(--color-dark-surface);
  box-shadow: 0 18px 42px var(--color-shadow);
  isolation: isolate;
}

.bio-media__stack::before,
.bio-media__stack::after {
  position: absolute;
  inset: 0;
  z-index: 3;
  opacity: 0;
  pointer-events: none;
  content: "";
  animation: bio-ai-fade 18s ease-in-out infinite;
}

.bio-media__stack::before {
  background:
    linear-gradient(90deg, transparent 0 42%, rgba(96, 165, 250, 0.18) 42% 43%, transparent 43%),
    linear-gradient(0deg, transparent 0 64%, rgba(96, 165, 250, 0.14) 64% 65%, transparent 65%),
    radial-gradient(circle at 58% 31%, rgba(96, 165, 250, 0.58) 0 2px, transparent 4px),
    radial-gradient(circle at 70% 45%, rgba(96, 165, 250, 0.44) 0 2px, transparent 5px);
  mix-blend-mode: screen;
}

.bio-media__stack::after {
  background:
    repeating-linear-gradient(0deg, rgba(237, 242, 255, 0.08) 0 1px, transparent 1px 8px),
    linear-gradient(115deg, transparent 0 36%, rgba(96, 165, 250, 0.2) 48%, transparent 60%);
  mix-blend-mode: soft-light;
}

.bio-media__stack img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.bio-media__portrait {
  position: relative;
  z-index: 1;
}

.bio-media__ai {
  position: absolute;
  inset: 0;
  z-index: 2;
  opacity: 0;
  animation: bio-ai-fade 18s ease-in-out infinite;
}

@keyframes bio-ai-fade {
  0%,
  44.5%,
  55.5%,
  100% {
    opacity: 0;
  }

  47.5%,
  52.5% {
    opacity: 0.92;
  }
}

.bio-copy {
  max-width: 740px;
}

.bio-copy p {
  margin: var(--space-4) 0 0;
  color: var(--color-muted);
  font-size: clamp(1.02rem, 1.5vw, 1.16rem);
}

.bio-principles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
  margin: var(--space-5) 0 0;
}

.bio-principles div {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-3);
}

.bio-principles dt {
  color: var(--color-text);
  font-weight: 700;
}

.bio-principles dd {
  margin: var(--space-1) 0 0;
  color: var(--color-muted);
  font-size: 0.94rem;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-5) 0;
  color: var(--color-muted);
}

.site-footer p {
  max-width: 640px;
  margin: 0;
}

.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition:
    opacity 420ms ease,
    transform 420ms ease;
}

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

@media (max-width: 820px) {
  .site-header {
    padding-top: var(--space-3);
    padding-bottom: var(--space-3);
  }

  main,
  .site-footer {
    width: min(100% - 24px, var(--page-max));
  }

  .section {
    padding-top: var(--space-4);
  }

  .hero,
  .section-heading,
  .project-browser,
  .about {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding: var(--space-6) max(16px, calc((100vw - var(--page-max)) / 2));
  }

  .hero .hero-title {
    font-size: clamp(4.2rem, 20vw, 7.2rem);
  }

  .project-detail__focus,
  .bio-principles {
    grid-template-columns: 1fr;
  }

  .project-detail {
    min-height: 0;
  }

  .bio-media__stack {
    width: min(70vw, 260px);
  }
}

@media (max-width: 520px) {
  .site-nav {
    gap: var(--space-3);
  }

  .hero-portrait {
    display: none;
  }

  .hero__actions {
    width: 100%;
  }

  .button {
    width: 100%;
  }

  .button--project {
    width: 100%;
  }

  .project-tab {
    min-height: 64px;
  }
}

@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 {
    opacity: 1;
    transform: none;
  }

  .bio-media__ai,
  .bio-media__stack::before,
  .bio-media__stack::after {
    opacity: 0 !important;
  }
}