/* Andrew Swerdlow, v3 "terminal" design.
   Warm dark field, coral accent, mono chrome, serif prose. */

:root {
  --bg: #1f1e1b;
  --bg-deep: #191816;
  --panel: #262522;
  --panel-raised: #2d2b27;
  --line: #3a382f;
  --line-strong: #57534a;
  --ink: #ece9e2;
  --muted: #b5b0a4;
  --faint: #968f81;
  --accent: #d97757;
  --accent-bright: #e98862;
  --accent-on-card: #b04e2e;
  --ok: #8fbf7f;
  --warn: #d9b95c;
  --card: #faf8f2;
  --card-ink: #21201d;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --serif: "Source Serif 4", "Iowan Old Style", Georgia, "Times New Roman", serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(rgba(236, 233, 226, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(236, 233, 226, 0.025) 1px, transparent 1px),
    var(--bg);
  background-size: 28px 28px;
  color: var(--ink);
  font-family: var(--serif);
  line-height: 1.6;
}

::selection {
  background: var(--accent);
  color: var(--bg-deep);
}

a {
  color: inherit;
}

a:focus-visible,
button:focus-visible,
.button:focus-visible {
  outline: 2px solid var(--accent-bright);
  outline-offset: 3px;
  border-radius: 2px;
}

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

h1,
h2,
h3,
p,
figure,
ul {
  margin-top: 0;
}

/* ---------- chrome ---------- */

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  transform: translateY(-150%);
  border: 1px solid var(--line-strong);
  padding: 8px 10px;
  background: var(--panel);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.82rem;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 28px;
  align-items: center;
  min-height: 64px;
  padding: 12px clamp(18px, 4vw, 48px);
  border-bottom: 1px solid var(--line);
  background: rgba(25, 24, 22, 0.92);
  backdrop-filter: blur(12px);
  font-family: var(--mono);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.brand strong {
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.prompt-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 8px rgba(143, 191, 127, 0.55);
}

nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(10px, 1.8vw, 22px);
  color: var(--muted);
  font-size: 0.78rem;
}

nav a,
.version-link,
.site-footer a,
.text-link,
.button {
  text-decoration: none;
}

nav a::before {
  content: "/";
  color: var(--faint);
  margin-right: 2px;
}

nav a:hover,
.version-link:hover,
.site-footer a:hover,
.text-link:hover {
  color: var(--accent-bright);
}

.version-link {
  justify-self: end;
  border: 1px solid var(--line);
  padding: 7px 10px;
  color: var(--muted);
  font-size: 0.74rem;
}

main {
  max-width: 1180px;
  margin: 0 auto;
  border-right: 1px solid var(--line);
  border-left: 1px solid var(--line);
  background: rgba(31, 30, 27, 0.6);
}

section {
  scroll-margin-top: 88px;
}

.section-marker {
  margin-bottom: 26px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.85rem;
}

.t-prompt {
  color: var(--ok);
  font-family: var(--mono);
}

.t-comment {
  color: var(--faint);
}

/* ---------- hero ---------- */

.hero {
  padding: clamp(52px, 8vw, 104px) clamp(20px, 5vw, 72px) clamp(36px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
}

.kicker {
  margin-bottom: 18px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 0.82rem;
}

h1 {
  margin-bottom: 20px;
  font-size: clamp(3.2rem, 8.5vw, 7.6rem);
  font-weight: 400;
  line-height: 0.96;
  letter-spacing: -0.01em;
}

.subtitle {
  max-width: 760px;
  margin-bottom: 44px;
  color: var(--muted);
  font-size: clamp(1.2rem, 2.3vw, 1.85rem);
  line-height: 1.32;
}

.terminal {
  max-width: 880px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: var(--bg-deep);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.4);
  overflow: hidden;
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

.tdot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}

.tdot-r { background: #e0655a; }
.tdot-y { background: #d9b95c; }
.tdot-g { background: #8fbf7f; }

.terminal-title {
  margin-left: 10px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 0.74rem;
}

.terminal-body {
  padding: 20px 22px 24px;
  font-family: var(--mono);
  font-size: clamp(0.82rem, 1.45vw, 0.95rem);
  line-height: 1.75;
}

.t-line {
  margin: 0;
}

.t-gap {
  margin-top: 1.1em;
}

.t-cmd {
  color: var(--ink);
  font-weight: 600;
}

.t-out {
  color: var(--muted);
}

.t-accent {
  color: var(--accent-bright);
}

.t-cursor {
  display: inline-block;
  width: 0.6em;
  height: 1.05em;
  vertical-align: text-bottom;
  background: var(--accent);
  animation: blink 1.1s steps(1) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .t-cursor { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---------- statusline ---------- */

.statusline {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 1px;
  border-bottom: 1px solid var(--line);
  background: var(--line);
}

.statusline div {
  min-height: 108px;
  padding: 18px 16px;
  background: var(--panel);
  font-family: var(--mono);
}

.statusline strong {
  display: block;
  margin-bottom: 8px;
  color: var(--accent-bright);
  font-size: clamp(1.3rem, 2.2vw, 1.7rem);
  font-weight: 600;
}

.statusline span {
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.5;
}

.statusline a {
  display: block;
  height: 100%;
  color: inherit;
  text-decoration: none;
}

.statusline a:hover span {
  color: var(--accent-bright);
}

/* ---------- sections shared ---------- */

.about-section,
.work-section,
.patents-section,
.career-section,
.talks-section,
.book-section,
.principles-section,
.contact-section {
  padding: clamp(48px, 7vw, 88px) clamp(20px, 5vw, 72px);
  border-bottom: 1px solid var(--line);
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(1.8rem, 4vw, 3.4rem);
  font-weight: 400;
  line-height: 1.05;
}

h3 {
  margin-bottom: 12px;
  font-size: 1.18rem;
  font-weight: 500;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(260px, 0.55fr) minmax(260px, 0.45fr);
  gap: clamp(22px, 5vw, 70px);
  align-items: end;
  margin-bottom: 44px;
}

.section-heading h2 {
  margin-bottom: 0;
}

.section-heading p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.4vw, 1.12rem);
}

/* ---------- about ---------- */

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 0.36fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
}

.prose {
  max-width: 760px;
}

.prose p {
  color: var(--muted);
  font-size: clamp(1.06rem, 1.5vw, 1.24rem);
}

.prose p:first-of-type {
  color: var(--ink);
}

.prose a {
  color: var(--accent-bright);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.portrait-card {
  margin: 0;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 10px;
  background: var(--panel);
}

.portrait-card img {
  width: 100%;
  border-radius: 4px;
}

.portrait-card figcaption {
  padding: 10px 4px 2px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 0.72rem;
}

/* ---------- work themes ---------- */

.work-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.work-card {
  padding: clamp(24px, 3.5vw, 38px);
  background: var(--panel);
}

.card-index {
  display: block;
  margin-bottom: 18px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.74rem;
}

.work-card h3 {
  font-size: clamp(1.18rem, 1.9vw, 1.45rem);
}

.work-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: clamp(0.98rem, 1.3vw, 1.06rem);
}

.work-card cite {
  color: var(--ink);
}

/* ---------- patents ---------- */

.figure-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(14px, 2vw, 22px);
}

.figure-grid figure {
  display: grid;
  grid-template-rows: 336px minmax(0, 1fr);
  margin: 0;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  overflow: hidden;
  background: var(--card);
}

.figure-grid img {
  width: 100%;
  height: 336px;
  padding: 18px;
  object-fit: contain;
}

.figure-grid figcaption {
  margin: 0;
  border-top: 1px solid rgba(33, 32, 29, 0.14);
  padding: 16px;
  background: var(--card);
  color: rgba(33, 32, 29, 0.72);
  font-family: var(--mono);
  font-size: 0.76rem;
  line-height: 1.55;
}

.figure-grid strong {
  display: block;
  margin-bottom: 8px;
  color: var(--card-ink);
  font-size: 0.82rem;
  font-weight: 600;
}

.fig-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 10px;
}

.figure-grid figcaption a {
  color: var(--accent-on-card);
}

.figure-grid figure.figure-more {
  grid-column: 1 / -1;
  grid-template-rows: auto auto;
  background: var(--bg-deep);
  border-style: dashed;
}

.more-listing {
  columns: 2;
  column-gap: 40px;
  padding: 22px 24px 8px;
  font-family: var(--mono);
  font-size: 0.84rem;
  line-height: 2;
  color: var(--muted);
}

.more-listing p {
  margin: 0;
  break-inside: avoid;
}

.figure-more figcaption {
  background: var(--bg-deep);
  border-top: 1px dashed var(--line-strong);
  color: var(--muted);
}

.figure-more figcaption a {
  color: var(--accent);
}

.figure-more strong {
  color: var(--ink);
}

/* ---------- career: git log ---------- */

.gitlog {
  display: grid;
  gap: 0;
  border-left: 1px solid var(--line-strong);
  margin-left: 6px;
}

.gitlog article {
  position: relative;
  padding: 0 0 clamp(36px, 5vw, 56px) clamp(22px, 4vw, 42px);
}

.gitlog article:last-child {
  padding-bottom: 4px;
}

.gitlog article::before {
  content: "";
  position: absolute;
  top: 7px;
  left: -6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: 2px solid var(--bg);
  background: var(--accent);
}

.gitlog header {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 10px;
  font-family: var(--mono);
  font-size: 0.8rem;
}

.commit-hash {
  color: var(--warn);
}

.commit-ref {
  color: var(--ok);
}

.commit-date {
  color: var(--faint);
}

.gitlog h2 {
  margin-bottom: 14px;
  font-size: clamp(1.4rem, 2.6vw, 2.1rem);
}

.gitlog ul {
  margin: 0;
  padding-left: 1.1em;
  max-width: 820px;
}

.gitlog li {
  margin-bottom: 8px;
  color: var(--muted);
  font-size: clamp(0.98rem, 1.35vw, 1.08rem);
}

.gitlog li::marker {
  color: var(--accent);
}

/* ---------- talks ---------- */

.talk-featured {
  margin-bottom: 36px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  padding: clamp(22px, 3.5vw, 36px);
  background: var(--panel);
}

.talk-tag {
  display: inline-block;
  margin-bottom: 16px;
  border: 1px solid var(--accent);
  border-radius: 3px;
  padding: 4px 9px;
  color: var(--accent-bright);
  font-family: var(--mono);
  font-size: 0.72rem;
}

.talk-featured h3 {
  font-size: clamp(1.3rem, 2.4vw, 1.9rem);
  font-weight: 500;
}

.talk-featured p {
  max-width: 820px;
  color: var(--muted);
  font-size: clamp(0.98rem, 1.35vw, 1.1rem);
}

.text-link {
  display: inline-block;
  margin-top: 4px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.84rem;
}

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

.talk-list li {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 18px;
  padding: 16px 4px;
  border-bottom: 1px solid var(--line);
}

.talk-date {
  color: var(--faint);
  font-family: var(--mono);
  font-size: 0.8rem;
  padding-top: 2px;
}

.talk-list a,
.talk-title {
  display: block;
  color: var(--ink);
  font-size: 1.02rem;
}

.talk-list a:hover {
  color: var(--accent-bright);
}

.talk-venue {
  display: block;
  margin-top: 3px;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 0.74rem;
}

/* ---------- book ---------- */

.book-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 200px;
  gap: clamp(28px, 7vw, 96px);
  align-items: center;
}

.book-section p {
  max-width: 720px;
  color: var(--muted);
  font-size: clamp(1rem, 1.4vw, 1.16rem);
}

.book-section cite {
  color: var(--ink);
}

.book-section img {
  width: 200px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.45);
}

.book-ctas {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 26px;
}

.book-ctas .button,
.book-ctas .text-link {
  margin-top: 14px;
}

/* ---------- principles ---------- */

.claim-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.claim-grid article {
  min-height: 190px;
  padding: clamp(20px, 3vw, 32px);
  background: var(--bg-deep);
}

.claim-grid span {
  display: block;
  margin-bottom: 18px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.74rem;
}

.claim-grid h3 {
  margin-bottom: 0;
  font-size: clamp(1.08rem, 1.7vw, 1.3rem);
  font-weight: 400;
  line-height: 1.35;
}

/* ---------- contact ---------- */

.contact-section {
  background: var(--bg-deep);
}

.contact-section h2 {
  max-width: 780px;
}

.contact-section p {
  max-width: 680px;
  color: var(--muted);
  font-size: clamp(1.02rem, 1.4vw, 1.18rem);
}

.button {
  display: inline-block;
  margin-top: 14px;
  border: 1px solid var(--accent);
  border-radius: 4px;
  padding: 13px 18px;
  background: transparent;
  color: var(--accent-bright);
  font-family: var(--mono);
  font-size: 0.88rem;
}

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

.contact-exit {
  margin: 38px 0 0;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 0.84rem;
}

/* ---------- footer ---------- */

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 26px clamp(18px, 4vw, 48px);
  border-right: 1px solid var(--line);
  border-left: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.76rem;
}

/* ---------- responsive ---------- */

@media (max-width: 980px) {
  section {
    scroll-margin-top: 128px;
  }

  .site-header {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  nav {
    justify-content: flex-start;
  }

  .version-link {
    justify-self: start;
  }

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

  .section-heading,
  .about-grid,
  .book-section {
    grid-template-columns: 1fr;
  }

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

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

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

  .portrait-card {
    max-width: 380px;
  }
}

@media (max-width: 640px) {
  main,
  .site-footer {
    border-right: 0;
    border-left: 0;
  }

  nav {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    gap: 14px;
    font-size: 0.74rem;
    padding-bottom: 4px;
  }

  h1 {
    font-size: clamp(2.7rem, 15vw, 4.4rem);
  }

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

  .figure-grid,
  .claim-grid {
    grid-template-columns: 1fr;
  }

  .figure-grid figure {
    grid-template-rows: 300px minmax(0, 1fr);
  }

  .figure-grid img {
    height: 300px;
  }

  .more-listing {
    columns: 1;
  }

  .claim-grid article {
    min-height: 0;
  }

  .talk-list li {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 12px;
  }

  .gitlog header {
    gap: 8px;
  }
}