:root {
  color-scheme: dark;
  --bg: #070707;
  --panel: rgba(29, 29, 29, 0.72);
  --panel-solid: #1d1d1d;
  --line: #434343;
  --line-soft: rgba(255, 255, 255, 0.08);
  --text: #f9f9f9;
  --text-2: #c9c9c9;
  --muted: #949494;
  --chip: rgba(0, 0, 0, 0.5);
  --invert-bg: #f9f9f9;
  --invert-text: #070707;
  --danger: #c0392b;
  --backdrop: url("../img/bg-dark.jpg");
  --shade: rgba(7, 7, 7, 0);
  --mono: "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Roboto", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --radius: 12px;
}

@media (prefers-color-scheme: light) {
  :root {
    color-scheme: light;
    --bg: #f9f9f9;
    --panel: rgba(226, 226, 226, 0.72);
    --panel-solid: #e2e2e2;
    --line: #bcbcbc;
    --line-soft: rgba(0, 0, 0, 0.08);
    --text: #070707;
    --text-2: #2c2c2c;
    --muted: #5e5e5e;
    --chip: rgba(255, 255, 255, 0.55);
    --invert-bg: #070707;
    --invert-text: #f9f9f9;
    --backdrop: url("../img/bg-light.jpg");
  }
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  position: relative;
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}

/* Film grain over everything, like the blurred backgrounds of adm1nsys.github.io/inc */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

a { color: inherit; }
img { display: block; max-width: 100%; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--text); outline-offset: 3px; border-radius: 4px; }

.backdrop {
  position: absolute;
  inset: 0 0 auto;
  z-index: -1;
  height: 100svh;
  background:
    linear-gradient(var(--shade), var(--shade)),
    var(--backdrop) 70% 20% / cover no-repeat;
  -webkit-mask-image: linear-gradient(#000 45%, transparent);
  mask-image: linear-gradient(#000 45%, transparent);
}
.backdrop-short { height: 70svh; }

.wrap {
  width: min(80rem, 100% - 2rem);
  margin-inline: auto;
}

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

/* ---------- Header ---------- */

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem max(1rem, calc((100% - 80rem) / 2));
  pointer-events: none;
}
.site-header > * { pointer-events: auto; }

.header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand {
  font: 500 14px/1 var(--mono);
  text-decoration: none;
  padding: 8px 10px;
  border-radius: 6px;
  background: var(--chip);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 7px 10px;
  border: 0;
  border-radius: 6px;
  background: var(--chip);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  font: 500 13px/1 var(--mono);
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s;
}
.chip:hover { background: var(--panel-solid); }

.icon { width: 24px; height: 24px; flex: none; }
.icon-sm { width: 14px; height: 14px; }

.lang { position: relative; }
.lang-toggle[aria-expanded="true"] .icon { transform: rotate(180deg); }
.lang-toggle .icon { transition: transform 0.2s; }

.lang-list {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 100%;
  padding: 6px;
  border-radius: 6px;
  background: var(--chip);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
.lang-list[hidden] { display: none; }
.lang-list button {
  padding: 7px 10px;
  border: 1px solid transparent;
  border-radius: 4px;
  background: none;
  font: 500 13px/1 var(--mono);
  cursor: pointer;
  color: var(--muted);
}
.lang-list button:hover,
.lang-list button.is-active { color: var(--text); }
.lang-list button.is-active { background: var(--line-soft); }
.lang-list .lang-close {
  margin-top: 4px;
  border-color: var(--danger);
  color: var(--danger);
}

/* ---------- Header menu (anchors to the main page) ---------- */

html.menu-open { overflow: hidden; }

.menu {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: color-mix(in srgb, var(--bg) 55%, transparent);
  -webkit-backdrop-filter: blur(24px);
  backdrop-filter: blur(24px);
  opacity: 0;
  transition: opacity 0.25s;
}
.menu[hidden] { display: none; }
.menu.is-open { opacity: 1; }

/* ---------- Menu page ---------- */

.menu-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  min-height: 100svh;
  padding-block: 6rem 4rem;
}

.menu-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem 1rem;
  max-width: 40rem;
}

.tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  width: 6.5rem;
  padding: 0;
  border: 0;
  background: none;
  text-decoration: none;
  cursor: pointer;
}
.tile-icon {
  display: grid;
  place-items: center;
  width: 4.5rem;
  height: 4.5rem;
  border: 1px solid transparent;
  border-radius: 16px;
  background: var(--panel-solid);
  transition: transform 0.2s, border-color 0.2s, background 0.2s;
}
.tile:hover .tile-icon,
.tile:focus-visible .tile-icon {
  transform: translateY(-3px);
  border-color: var(--muted);
  background: color-mix(in srgb, var(--panel-solid) 78%, var(--text));
}
.tile:active .tile-icon { transform: translateY(0) scale(0.96); }
.tile:focus-visible { outline: none; }
.tile-label {
  padding: 4px 7px;
  border-radius: 6px;
  background: var(--chip);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  font: 500 12px/1.3 var(--mono);
  color: var(--text-2);
  text-align: center;
  transition: color 0.2s, background 0.2s;
}
.tile:hover .tile-label,
.tile:focus-visible .tile-label { color: var(--text); background: var(--panel-solid); }

.menu-meta {
  margin: 0;
  font: 400 13px/1 var(--mono);
  color: var(--muted);
}

/* ---------- Shared type and controls ---------- */

.eyebrow {
  margin: 0 0 0.75rem;
  font: 500 12px/1.4 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--mono);
  font-weight: 500;
  letter-spacing: -0.03em;
}
h1 { font-size: clamp(2.25rem, 6vw, 4.5rem); line-height: 1.02; }
h2 { font-size: clamp(1.5rem, 3vw, 2.125rem); line-height: 1.15; }
h3 { font-size: 1.0625rem; line-height: 1.3; letter-spacing: -0.01em; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  font: 500 14px/1 var(--mono);
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s, background 0.2s;
}
.btn:hover { transform: translateY(-1px); background: var(--panel-solid); }
.btn-primary {
  border-color: var(--invert-bg);
  background: var(--invert-bg);
  color: var(--invert-text);
}
.btn-primary:hover { background: var(--invert-bg); opacity: 0.9; }
.btn-ghost { background: none; border-color: transparent; -webkit-backdrop-filter: none; backdrop-filter: none; }
.btn-sm { min-height: 36px; padding: 0 12px; font-size: 13px; }

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font: 500 14px/1.3 var(--mono);
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}
.text-link:hover { color: var(--text); }

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.tags li {
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font: 400 12px/1.2 var(--mono);
  color: var(--muted);
}

/* ---------- Sections ---------- */

.section { padding-block: clamp(3rem, 8vw, 5.5rem); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
}

.page-head {
  padding-top: clamp(7rem, 18vw, 11rem);
  padding-bottom: 1rem;
}
.page-head p:not(.eyebrow) {
  max-width: 40rem;
  margin: 1rem 0 0;
  font-size: 1.125rem;
  color: var(--text-2);
}

/* ---------- Hero ---------- */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.9fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 4rem);
  min-height: 100svh;
  padding-top: 7rem;
  padding-bottom: clamp(2rem, 6vw, 4rem);
}

.hero-lead {
  max-width: 38rem;
  margin: 1.25rem 0 1.5rem;
  font-size: clamp(1.0625rem, 1.6vw, 1.25rem);
  color: var(--text-2);
}

.profile { overflow: hidden; }
.profile-top {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
}
.portrait {
  position: relative;
  display: grid;
  place-items: center;
  flex: none;
  width: 7.5rem;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border-radius: 8px;
  background: var(--panel-solid);
  font: 500 1.375rem/1 var(--mono);
  color: var(--muted);
}
.portrait img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.profile-name { font: 500 1.125rem/1.3 var(--mono); }
.profile-role { margin-top: 4px; font: 400 13px/1.4 var(--mono); color: var(--muted); }

.facts { margin: 0; }
.facts div {
  display: grid;
  grid-template-columns: 7.5rem minmax(0, 1fr);
  gap: 1rem;
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--line-soft);
}
.facts dt {
  font: 500 12px/1.6 var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}
.facts dd { margin: 0; font-size: 15px; overflow-wrap: anywhere; }
.fact-note {
  display: block;
  margin-top: 2px;
  font: 400 12px/1.4 var(--mono);
  color: var(--muted);
}
.fact-list { margin: 0; padding: 0; list-style: none; }
.fact-list li + li { margin-top: 4px; }

/* ---------- Birthday ---------- */

@property --angle {
  syntax: "<angle>";
  initial-value: 0deg;
  inherits: false;
}

.birthday-note {
  margin-top: 0.5rem;
  font: 500 13px/1.4 var(--mono);
  background: linear-gradient(90deg, #ff6b6b, #ffd93d, #6bcb77, #4d96ff, #c77dff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.is-birthday .profile {
  border-color: transparent;
  background:
    linear-gradient(var(--panel-solid), var(--panel-solid)) padding-box,
    conic-gradient(from var(--angle), #ff6b6b, #ffd93d, #6bcb77, #4d96ff, #c77dff, #ff6b6b) border-box;
  box-shadow: 0 0 60px -10px rgba(199, 125, 255, 0.45);
  animation: birthday-spin 4s linear infinite;
}
@keyframes birthday-spin { to { --angle: 360deg; } }

.confetti {
  position: fixed;
  inset: 0;
  z-index: 90;
  overflow: hidden;
  pointer-events: none;
}
.confetti i {
  position: absolute;
  top: -12px;
  width: 8px;
  height: 12px;
  border-radius: 2px;
  animation: confetti-fall linear forwards;
}
@keyframes confetti-fall {
  to { transform: translate(var(--drift), 105vh) rotate(var(--spin)); }
}

/* ---------- About ---------- */

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(1.5rem, 5vw, 4rem);
}
.prose p {
  margin: 0 0 1rem;
  font-size: 1.125rem;
  color: var(--text-2);
}
.prose p:last-child { margin-bottom: 0; }
.prose a,
.rows a {
  color: var(--text);
  text-decoration: underline;
  text-decoration-color: var(--line);
  text-underline-offset: 3px;
  transition: text-decoration-color 0.2s;
}
.prose a:hover,
.rows a:hover { text-decoration-color: currentColor; }

/* ---------- Grids of cards ---------- */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 17rem), 1fr));
  gap: 1rem;
}
.grid-wide { grid-template-columns: repeat(auto-fill, minmax(min(100%, 24rem), 1fr)); }

.focus-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.25rem;
}
.focus-card .num { font: 500 12px/1 var(--mono); color: var(--muted); }
.focus-card p { margin: 0 0 auto; color: var(--text-2); font-size: 15px; }
.focus-card .tags { margin-top: 0.5rem; }

.project {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.25rem;
  text-decoration: none;
  transition: transform 0.2s, border-color 0.2s;
}
.project:hover { transform: translateY(-2px); border-color: var(--muted); }
.project h3 { padding-right: 2rem; }
.project p { margin: 0 0 auto; color: var(--text-2); font-size: 15px; }
.project > .icon {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 18px;
  height: 18px;
  color: var(--muted);
  transition: color 0.2s, transform 0.2s;
}
.project:hover > .icon { color: var(--text); transform: translate(2px, -2px); }

.group + .group { margin-top: clamp(2.5rem, 6vw, 4rem); }
.group h2 { margin-bottom: 1.25rem; font-size: clamp(1.25rem, 2.4vw, 1.5rem); }

/* ---------- Tools ---------- */

.rows { margin: 0; border-bottom: 1px solid var(--line-soft); }
.rows div {
  display: grid;
  grid-template-columns: minmax(0, 15rem) minmax(0, 1fr);
  gap: 1rem;
  padding: 1rem 0;
  border-top: 1px solid var(--line-soft);
}
.rows dt { font: 500 13px/1.6 var(--mono); color: var(--muted); }
.rows dd { margin: 0; font: 400 15px/1.6 var(--mono); }

/* ---------- Contact ---------- */

.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: start;
  gap: clamp(1.5rem, 5vw, 4rem);
  padding: clamp(1.25rem, 4vw, 2.5rem);
}
.contact-text p:not(.eyebrow) { max-width: 30rem; margin: 1rem 0 1.5rem; color: var(--text-2); font-size: 1.0625rem; }

/* ---------- Education ---------- */

.timeline { margin: 0; padding: 0; list-style: none; border-bottom: 1px solid var(--line-soft); }
.timeline > li {
  display: grid;
  grid-template-columns: minmax(0, 15rem) minmax(0, 1fr);
  gap: 1rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--line-soft);
}
.timeline-date { font: 500 13px/1.6 var(--mono); color: var(--muted); }
.timeline h3 { font-size: 1rem; line-height: 1.45; }
.timeline p { margin: 0.375rem 0 0; color: var(--text-2); font-size: 15px; }
.timeline .text-link { margin-top: 0.75rem; }
.timeline a:not(.text-link) {
  color: var(--text);
  text-decoration: underline;
  text-decoration-color: var(--line);
  text-underline-offset: 3px;
}
.timeline a:not(.text-link):hover { text-decoration-color: currentColor; }

.cert-list { margin: 0.75rem 0 0; padding: 0; list-style: none; }
.cert-list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 0.5rem 1.25rem;
  padding: 0.625rem 0;
  border-top: 1px solid var(--line-soft);
}
.cert-name { font: 400 14px/1.4 var(--mono); }
.cert-date { font: 400 13px/1.4 var(--mono); color: var(--muted); white-space: nowrap; }
.timeline .cert-list .text-link { margin: 0; }

.project-links { display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem; }

/* ---------- Back link & language HUD ---------- */

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin: 0 0 1.5rem -4px;
  font: 500 13px/1 var(--mono);
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}
.back-link:hover { color: var(--text); }

.lang-hud {
  position: fixed;
  top: 50%;
  left: 50%;
  z-index: 80;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  width: 12.5rem;
  aspect-ratio: 1;
  border-radius: 20px;
  background: var(--chip);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.96);
  transition: opacity 0.4s, transform 0.4s;
}
.lang-hud.is-visible { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.lang-hud-code { font: 500 4.5rem/1 var(--mono); letter-spacing: -0.04em; }
.lang-hud-text { font: 400 13px/1.2 var(--mono); opacity: 0.5; text-align: center; }

/* ---------- Music ---------- */

.playlist {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 0.75rem;
}
.playlist iframe {
  width: 100%;
  height: 450px;
  border: 0;
  border-radius: 8px;
  overflow: hidden;
  background: transparent;
}
.playlist .text-link { padding: 0 0.25rem 0.25rem; }

.empty {
  margin: 0;
  padding: 2.5rem 1.25rem;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  font: 500 14px/1.4 var(--mono);
  color: var(--muted);
  text-align: center;
}

/* ---------- Links ---------- */

.link-list { display: flex; flex-direction: column; }
.link-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto 18px;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0;
  border-top: 1px solid var(--line-soft);
  text-decoration: none;
}
.link-list .link-row:last-child { border-bottom: 1px solid var(--line-soft); }
.link-name { font: 500 1.125rem/1.3 var(--mono); }
.link-handle { font: 400 14px/1.3 var(--mono); color: var(--muted); overflow-wrap: anywhere; text-align: right; }
.link-row .icon { width: 18px; height: 18px; color: var(--muted); transition: color 0.2s, transform 0.2s; }
.link-row:hover .icon { color: var(--text); transform: translate(2px, -2px); }
.link-row:hover .link-handle { color: var(--text); }

.link-group + .link-group { margin-top: 3rem; }
.link-group h2 { margin-bottom: 1rem; font-size: clamp(1.125rem, 2vw, 1.375rem); }

/* ---------- Footer & language banner ---------- */

.site-footer {
  margin-top: 2rem;
  padding-block: 1.5rem;
  border-top: 1px solid var(--line-soft);
  font: 400 12px/1.5 var(--mono);
  color: var(--muted);
}
.footer-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
}
.footer-links { display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: var(--text); }

.suggest {
  position: fixed;
  left: 50%;
  bottom: 1rem;
  z-index: 70;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.25rem;
  width: min(40rem, 100% - 2rem);
  padding: 0.75rem 0.75rem 0.75rem 1rem;
  border-radius: var(--radius);
  background: var(--chip);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  transform: translate(-50%, calc(100% + 2rem));
  transition: transform 0.3s ease;
}
.suggest.is-visible { transform: translate(-50%, 0); }
.suggest p { margin: 0; font: 500 13px/1.4 var(--mono); }
.suggest-actions { display: flex; gap: 0.25rem; }

/* ---------- Layout breakpoints ---------- */

@media (min-width: 720px) {
  .wrap { width: min(80rem, 100% - 4rem); }
  .site-header { padding-inline: max(2rem, calc((100% - 80rem) / 2)); }
}

@media (max-width: 860px) {
  :root { --shade: rgba(7, 7, 7, 0.55); }
  .hero {
    grid-template-columns: minmax(0, 1fr);
    align-items: start;
    min-height: 0;
  }
  .split,
  .contact { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 860px) and (prefers-color-scheme: light) {
  :root { --shade: rgba(249, 249, 249, 0.55); }
}

@media (max-width: 560px) {
  .facts div,
  .rows div,
  .timeline > li { grid-template-columns: minmax(0, 1fr); gap: 0.25rem; }
  .portrait { width: 6rem; }
  .cert-list li { grid-template-columns: minmax(0, 1fr) auto; }
  .cert-list .text-link { grid-column: 1 / -1; }
  .link-row { grid-template-columns: minmax(0, 1fr) 18px; }
  .link-handle { grid-column: 1; grid-row: 2; text-align: left; }
  .link-row .icon { grid-column: 2; grid-row: 1 / span 2; }
  .actions .btn { flex: 1 1 auto; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}