/* Type: Gambarino (headlines) + Switzer (body) from Fontshare, Fragment Mono (labels) from Google Fonts.
   Palette after nantesbuch.de. */

:root {
  --bg: #f2f6ea;
  --ink: #232220;
  --text: #3d3c39;
  --muted: #85847c;
  --line: rgba(35, 34, 32, 0.14);
  --highlight: #e6ec8f;

  /* Headings use the same grotesk as the body, tracked tight (as on nantesbuch.de). */
  --serif: "Switzer", system-ui, -apple-system, "Segoe UI", sans-serif;
  --accent-serif: "Gambarino", Georgia, "Times New Roman", serif;
  --sans: "Switzer", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Fragment Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --max: 920px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main { flex: 1; }

a { color: inherit; }

/* Gambarino has no italic, so emphasis stays upright */
em { font-style: normal; }

mark {
  background: linear-gradient(transparent 58%, var(--highlight) 58%);
  color: inherit;
  padding: 0 1px;
}

.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  padding: 16px 24px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
}

.nav__name {
  font-family: var(--serif);
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
}

.nav__links { display: flex; gap: 28px; justify-content: center; }

.nav__links a {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}

.nav__links a:hover,
.nav__links a[aria-current="page"] { color: var(--ink); }

.nav__links a[aria-current="page"] {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 6px;
}

.nav__tag {
  font-size: 10px;
  margin-left: 3px;
  color: var(--muted);
}

.nav__icons { display: flex; gap: 6px; justify-content: flex-end; }

.nav__icons a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  transition: background 0.2s;
}

.nav__icons a:hover { background: rgba(35, 34, 32, 0.06); }
.nav__icons svg { width: 15px; height: 15px; }

/* ---------- Type ---------- */

.eyebrow,
.section-label,
.note {
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.5;
  letter-spacing: 0.01em;
  color: var(--muted);
}

.eyebrow { margin: 0 0 20px; }
.section-label { margin: 0 0 32px; }

.big {
  font-family: var(--serif);
  font-size: clamp(32px, 5vw, 50px);
  line-height: 1.04;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin: 0 0 28px;
}

.muted { color: var(--muted); text-decoration: line-through; text-decoration-thickness: 2px; }

.lede { max-width: 620px; font-size: 18px; margin: 0; }

.note { display: inline-block; text-decoration: none; }
a.note:hover { color: var(--ink); }

.text-link {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 5px;
  text-decoration-thickness: 1px;
}

.arrow { display: inline-block; transition: transform 0.2s; }
a:hover .arrow { transform: translateX(3px); }

/* ---------- Page intro (Work / Blog / About) ---------- */

.page-head { padding-top: clamp(70px, 12vh, 160px); padding-bottom: clamp(40px, 6vh, 80px); }

.page-head__title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(42px, 6.6vw, 70px);
  line-height: 1;
  letter-spacing: -0.035em;
  color: var(--ink);
  margin: 0 0 24px;
}

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

.hero { padding-top: clamp(98px, 14vh, 196px); padding-bottom: clamp(84px, 12vh, 168px); }

.hero__title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(42px, 7vw, 76px);
  line-height: 1;
  letter-spacing: -0.035em;
  color: var(--ink);
  margin: 0 0 32px;
}

.hero__hi {
  font-family: var(--accent-serif);
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--muted);
  margin: 0 0 18px;
}

.hero__aside {
  font-family: var(--serif);
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--muted);
  margin: -14px 0 32px;
}

.hero__meta { font-size: 18px; margin: 0; }

.pin { color: var(--ink); white-space: nowrap; }

.note--hero { display: block; margin-top: 28px; }

/* ---------- Thesis ---------- */

.thesis { padding-top: clamp(48px, 6vh, 84px); padding-bottom: clamp(70px, 10vh, 140px); }

.threads {
  list-style: none;
  margin: 56px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 48px;
}

.threads li {
  display: flex;
  gap: 18px;
  align-items: baseline;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.threads__n {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
  flex-shrink: 0;
}

.threads h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 26px;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 0 0 8px;
}

.threads p { margin: 0; font-size: 16px; }

/* ---------- Story ---------- */

.story { padding-bottom: clamp(56px, 8vh, 112px); }

.route { width: 100%; height: auto; margin: 0 0 56px; overflow: visible; }

.route__path {
  fill: none;
  stroke: var(--ink);
  stroke-width: 1.25;
  stroke-dasharray: 3 6;
  stroke-linecap: round;
}

.route__stop circle { fill: var(--bg); stroke: var(--ink); stroke-width: 1.25; }
.route__stop--now circle { fill: var(--ink); }

.route__stop text {
  font-family: var(--mono);
  font-size: 15px;
  fill: var(--muted);
  text-anchor: middle;
}

.route__stop--now text { fill: var(--ink); }

.chapter {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 32px;
  padding: 40px 0;
  border-top: 1px solid var(--line);
}

.chapter__when { display: flex; flex-direction: column; gap: 2px; padding-top: 6px; }

.chapter__place,
.chapter__years { font-family: var(--mono); font-size: 13px; }

.chapter__place { color: var(--ink); }
.chapter__years { color: var(--muted); }

.chapter__body h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(32px, 4.4vw, 44px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin: 0 0 18px;
}

.chapter__body p { margin: 0 0 14px; max-width: 600px; }

.chapter__body strong { color: var(--ink); font-weight: 500; }

.chapter__body .note { margin-top: 4px; }
.chapter__body .note::before { content: "— "; }

.chapter--now .chapter__place::after {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-left: 8px;
  vertical-align: middle;
  border-radius: 50%;
  background: var(--ink);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.25; }
}

/* ---------- Work (ruled list) ---------- */

.work { padding-top: clamp(70px, 10vh, 140px); padding-bottom: clamp(70px, 10vh, 140px); }
.work--page { padding-top: 0; }

.cards { margin: 16px 0 36px; border-bottom: 1px solid var(--line); }

.card {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 32px;
  padding: 30px 0;
  border-top: 1px solid var(--line);
  text-decoration: none;
}

.card__kind {
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
  padding-top: 6px;
}

.card h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 30px;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 0 0 12px;
}

a.card h3 { text-decoration: underline; text-decoration-color: transparent; text-underline-offset: 5px; text-decoration-thickness: 1px; transition: text-decoration-color 0.2s; }
a.card:hover h3 { text-decoration-color: var(--ink); }
a.card:hover .arrow { transform: translate(2px, -2px); }

.card p { font-size: 16px; margin: 0 0 12px; max-width: 600px; }

.card .card__tags {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--muted);
  margin: 0;
}

/* ---------- Curious ---------- */

.curious { padding-top: clamp(56px, 8vh, 112px); padding-bottom: clamp(70px, 10vh, 140px); }

.questions { list-style: none; margin: 0; padding: 0; }

.questions li {
  font-family: var(--serif);
  font-size: clamp(26px, 3.6vw, 34px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink);
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.aside { margin: 40px 0 0; font-size: 17px; }
.note--inline { font-size: 14px; margin-left: 4px; }

/* ---------- Blog placeholder ---------- */

.marinating { padding-top: clamp(80px, 14vh, 180px); padding-bottom: clamp(80px, 14vh, 180px); }

.jar { display: block; width: 72px; height: 72px; color: var(--ink); margin: 0 0 28px; }
.jar .bubble { animation: rise 3.2s ease-in infinite; opacity: 0; }
.jar .bubble:nth-of-type(2) { animation-delay: 1.1s; }
.jar .bubble:nth-of-type(3) { animation-delay: 2.1s; }

@keyframes rise {
  0% { transform: translateY(0); opacity: 0; }
  20% { opacity: 1; }
  100% { transform: translateY(-22px); opacity: 0; }
}

.upcoming { list-style: none; margin: 48px 0 0; padding: 0; }

.upcoming li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
  font-family: var(--serif);
  font-size: clamp(24px, 3.2vw, 30px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.upcoming li:last-child { border-bottom: 1px solid var(--line); }

.upcoming li span {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0;
  color: var(--muted);
  white-space: nowrap;
}

/* ---------- Blog index ---------- */

.posts { padding-bottom: clamp(40px, 6vh, 80px); }

.post-list { list-style: none; margin: 0; padding: 0; border-bottom: 1px solid var(--line); }

.post-list__link {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 32px;
  padding: 34px 0;
  border-top: 1px solid var(--line);
  text-decoration: none;
}

.post-list__date {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
  padding-top: 8px;
}

.post-list__main { display: flex; flex-direction: column; gap: 10px; }

.post-list__title {
  font-family: var(--serif);
  font-size: clamp(28px, 3.6vw, 36px);
  line-height: 1.04;
  letter-spacing: -0.028em;
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 6px;
  text-decoration-thickness: 1px;
  transition: text-decoration-color 0.2s;
}

.post-list__link:hover .post-list__title { text-decoration-color: var(--ink); }

.post-list__sub { font-size: 16.5px; max-width: 600px; }

.post-list__meta { font-family: var(--mono); font-size: 12.5px; color: var(--muted); }

/* ---------- Physical-AI notes (blog page) ---------- */

.pai { padding-top: clamp(56px, 9vh, 112px); padding-bottom: clamp(56px, 8vh, 100px); }

.pai__title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(30px, 4.4vw, 44px);
  line-height: 1.05;
  letter-spacing: -0.028em;
  color: var(--ink);
  margin: 0 0 18px;
}

.pai__lock { margin-top: 34px; max-width: 600px; }
.pai__lock[hidden] { display: none; }

.pai__hint {
  display: block;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
  margin-bottom: 12px;
}

.pai__row { display: flex; gap: 10px; }

.pai__row input {
  flex: 1;
  min-width: 0;
  font: 16px/1.2 var(--sans);
  color: var(--ink);
  padding: 12px 14px;
  background: #fbfcf8;
  border: 1px solid var(--line);
  border-radius: 4px;
}

.pai__row input:focus { outline: 2px solid var(--ink); outline-offset: 1px; }
.pai__row .button { border: 0; cursor: pointer; }

.pai__msg { min-height: 1.6em; margin: 10px 0 0; font-family: var(--mono); font-size: 12.5px; color: var(--muted); }

.pai__list { margin-top: 26px; }


/* ---------- Hello ---------- */

.hello { padding-top: clamp(70px, 10vh, 140px); padding-bottom: clamp(84px, 12vh, 168px); }

.button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 22px;
  border-radius: 4px;
  background: var(--ink);
  color: var(--bg);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1;
  transition: opacity 0.2s ease;
}

.button:hover { opacity: 0.85; }

/* ---------- Footer ---------- */

.footer {
  padding-top: 28px;
  padding-bottom: 40px;
  border-top: 1px solid var(--line);
}

.footer__links { margin: 0 0 10px; }

.footer__links a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

.footer__copy {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
}

/* ---------- Reveal ---------- */

.js .reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.js .reveal.is-visible { opacity: 1; transform: none; }

.js .route .route__path { stroke-dashoffset: 1200; transition: stroke-dashoffset 2.4s ease; }
.js .route.is-visible .route__path { stroke-dashoffset: 0; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal, .js .route .route__path { opacity: 1; transform: none; transition: none; stroke-dashoffset: 0; }
  .chapter--now .chapter__place::after { animation: none; }
  .jar .bubble { animation: none; opacity: 1; }
}

/* ---------- Small screens ---------- */

@media (max-width: 680px) {
  body { font-size: 16px; }
  .wrap { padding-left: 16px; padding-right: 16px; }
  .nav { grid-template-columns: auto 1fr; padding: 14px 16px; }
  .nav__links { gap: 16px; justify-content: flex-end; }
  .nav__links a { font-size: 13px; }
  .nav__icons, .nav__tag { display: none; }
  .threads { grid-template-columns: 1fr; }
  .chapter, .card { grid-template-columns: 1fr; gap: 8px; padding: 28px 0; }
  .chapter__when { flex-direction: row; gap: 12px; padding-top: 0; }
  .card__kind { padding-top: 0; }
  .route__stop text { font-size: 22px; }
  .upcoming li { flex-direction: column; gap: 4px; }
  .post-list__link { grid-template-columns: 1fr; gap: 8px; padding: 28px 0; }
  .post-list__date { padding-top: 0; }
}

/* ---------- Footer diorama ---------- */

.stage {
  position: relative;
  width: 100%;
  height: clamp(240px, 30vw, 560px);
  margin-top: 24px;
  overflow: hidden;
}

.stage canvas { display: block; width: 100%; height: 100%; }

#labels { position: absolute; inset: 0; pointer-events: none; }

.place-tag {
  position: absolute;
  transform: translate(-50%, -100%);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink);
  white-space: nowrap;
  padding: 4px 9px;
  border-radius: 4px;
  background: rgba(242, 246, 234, 0.94);
  border: 1px solid var(--line);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.place-tag.on { opacity: 1; }
.place-tag em { font-style: normal; color: var(--muted); margin-left: 6px; }
.place-tag em::before { content: "· "; }