@import url("https://fonts.googleapis.com/css2?family=Permanent+Marker&family=Space+Grotesk:wght@400;500;600;700&display=swap");

:root {
  --font-body: "Space Grotesk", system-ui, sans-serif;
  --font-marker: "Permanent Marker", cursive;
  --bg: #121212;
  --bg-elevated: rgba(255, 255, 255, 0.04);
  --text: #e8e8e8;
  --text-muted: #9a9a9a;
  --border: rgba(255, 255, 255, 0.08);
  --accent: #9eb7e8;
  --rail-width: min(320px, 38vw);
  --page-pad: clamp(1.5rem, 5vw, 3rem);
  --polaroid-w: clamp(240px, 36vw, 328px);
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--bg);
  color: var(--text);
  z-index: 100;
}

.skip:focus {
  left: 0.5rem;
}

.shell {
  display: flex;
  align-items: flex-start;
  min-height: 100vh;
}

.rail {
  flex: 0 0 var(--rail-width);
  max-width: 100%;
  padding: 1.75rem 1.35rem 1.25rem;
  border-right: none;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  align-self: flex-start;
  position: sticky;
  top: 0;
  height: 100vh;
  max-height: 100vh;
  overflow-x: hidden;
  overflow-y: auto;
}

.rail-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: nowrap;
  color: var(--text);
  font-weight: 400;
  text-decoration: none;
}

.rail-brand:hover {
  text-decoration: none;
  opacity: 0.92;
}

.rail-brand > span {
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  font-size: clamp(1.05rem, 1.35vw, 1.2rem);
  font-weight: 300;
  letter-spacing: 0.06em;
  line-height: 1.2;
  text-shadow:
    0 1px 0 rgba(255, 255, 255, 0.04),
    0 12px 32px rgba(0, 0, 0, 0.45),
    0 0 40px rgba(255, 255, 255, 0.06);
  animation: rail-name-float 7s ease-in-out infinite;
}

@keyframes rail-name-float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-2px);
  }
}

.rail-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.rail-label {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 0.15rem;
  opacity: 0.85;
}

.mobile-jump {
  display: none;
}

.mobile-jump summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text);
  list-style: none;
}

.mobile-jump summary::-webkit-details-marker {
  display: none;
}

.rail-nav {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.rail-nav a {
  color: var(--text-muted);
  padding: 0.3rem 0;
  text-decoration: none;
  font-size: 0.92rem;
  transition: color 0.2s ease, opacity 0.2s ease;
}

.rail-nav a:hover {
  color: var(--text);
  text-decoration: none;
}

.rail-nav a.is-current {
  color: var(--text);
  font-weight: 500;
}

.rail-quick {
  position: fixed;
  right: max(1rem, env(safe-area-inset-right, 0px));
  bottom: max(1rem, env(safe-area-inset-bottom, 0px));
  left: auto;
  z-index: 200;
  pointer-events: auto;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.4rem;
  margin: 0;
  padding: 0.55rem 0.75rem;
  font-size: 0.88rem;
  background: rgba(18, 18, 18, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

.rail-quick a {
  color: var(--text-muted);
  transition: color 0.2s ease;
  white-space: nowrap;
  cursor: pointer;
  pointer-events: auto;
}

.rail-quick a:hover {
  color: var(--text);
}

.page {
  flex: 1;
  min-width: 0;
}

.page--sub {
  padding: var(--page-pad);
  padding-bottom: calc(var(--page-pad) + 4.5rem);
  max-width: 52rem;
}

.page--home {
  padding: 0;
  padding-bottom: 4rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: visible;
}

.polaroid-stage {
  flex: 1;
  min-height: 0;
  position: relative;
  padding: clamp(0.75rem, 3vw, 1.5rem);
  padding-bottom: clamp(2rem, 12vh, 5rem);
  overflow: visible;
}

.home-reads-cta {
  position: absolute;
  left: clamp(0.75rem, 3vw, 1.5rem);
  bottom: clamp(0.65rem, 2.5vh, 1.1rem);
  z-index: 90;
  font-size: 0.9rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.home-reads-cta:hover {
  color: var(--accent);
  text-decoration: none;
}

.polaroid-scatter {
  position: relative;
  width: 100%;
  min-height: calc(100vh - 4rem);
  padding-bottom: clamp(6rem, 22vh, 14rem);
  box-sizing: border-box;
}

.scatter-cell {
  position: absolute;
  width: var(--polaroid-w);
  max-width: 92vw;
  overflow: visible;
  cursor: default;
}

.polaroid {
  position: relative;
  overflow: hidden;
  background: #f3f0e8;
  padding: 12px 12px 46px;
  border-radius: 1px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.18);
  transform: rotate(var(--tilt, 0deg)) translateZ(0);
  transform-origin: 50% 60%;
  transition:
    transform 0.45s cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 0.45s ease;
  will-change: transform;
}

.scatter-cell:hover .polaroid {
  transform: rotate(var(--tilt, 0deg)) scale(1.05) translateY(-10px);
  box-shadow:
    0 24px 48px rgba(0, 0, 0, 0.28),
    0 8px 16px rgba(0, 0, 0, 0.12);
}

.polaroid img {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  background: #ddd;
}

.polaroid-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 10px;
  text-align: center;
  font-family: var(--font-marker);
  font-size: clamp(0.85rem, 2.8vw, 1.05rem);
  font-weight: 400;
  color: #2a2a2a;
  transition: opacity 0.35s ease;
}

.scatter-cell:hover .polaroid-caption {
  opacity: 0.95;
}

.subpage {
  max-width: 42rem;
}

.subpage h1 {
  font-size: 1.75rem;
  font-weight: 600;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}

.subpage p {
  margin: 0 0 1rem;
  color: var(--text-muted);
}

.subpage strong {
  color: var(--text);
}

.subpage a {
  color: var(--accent);
}

.doc-lede {
  font-size: 1.05rem;
  color: var(--text);
}

.subpage--xp .xp-intro {
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.xp-item {
  margin-bottom: 2.25rem;
}

.xp-company-name {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0 0 0.25rem;
  color: var(--text);
}

.xp-role {
  margin: 0 0 0.35rem;
  color: var(--text);
  font-weight: 500;
}

.xp-when {
  margin: 0 0 0.75rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.xp-bullets {
  margin: 0 0 0.75rem;
  padding-left: 1.2rem;
  color: var(--text-muted);
}

.xp-bullets li {
  margin-bottom: 0.4rem;
}

.xp-skills {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-style: italic;
  margin: 0;
}

.subpage--proj .doc-lede {
  margin-bottom: 2rem;
  max-width: 38rem;
}

.proj-stack {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.proj-stack .proj + .proj {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.proj-index {
  display: block;
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.45rem;
  opacity: 0.9;
}

.proj-title {
  font-size: 1.2rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin: 0 0 0.4rem;
  line-height: 1.25;
}

.proj-title a {
  color: var(--text);
  text-decoration: none;
}

.proj-title a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.proj-tagline {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin: 0 0 0.65rem;
  letter-spacing: 0.02em;
}

.proj-body {
  margin: 0;
  color: var(--text-muted);
  max-width: 40rem;
  line-height: 1.65;
}

.proj-body strong {
  color: var(--text);
  font-weight: 500;
}

.proj-actions {
  margin-top: 0.75rem;
  font-size: 0.95rem;
}

.proj-actions .sep {
  margin: 0 0.35rem;
  color: var(--text-muted);
}

.proj-links {
  margin: 0.85rem 0 0;
  font-size: 0.92rem;
}

.proj-links .sep {
  margin: 0 0.4rem;
  color: var(--text-muted);
}

.proj-links a {
  color: var(--accent);
}

.proj-links a:hover {
  color: var(--text);
}

.reads-index {
  max-width: 36rem;
}

.reads-title {
  font-size: 1.75rem;
  font-weight: 600;
  margin: 0 0 1.5rem;
}

.reads-nightstand {
  margin: 0 0 1.75rem;
}

.reads-nightstand-card {
  display: flex;
  align-items: center;
  gap: 1.35rem;
  padding: 0;
}

.reads-nightstand-book-stage {
  flex-shrink: 0;
  width: 5.75rem;
  height: 6.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 720px;
  perspective-origin: 50% 45%;
}

.reads-nightstand-book {
  position: relative;
  width: 3.25rem;
  height: 4.75rem;
  flex-shrink: 0;
  border-radius: 1px 3px 3px 1px;
  transform-style: preserve-3d;
  transform-origin: center center;
  animation: reads-book-spin3d 12s linear infinite;
  background: transparent;
}

.reads-nightstand-book::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    90deg,
    #1c1210 0%,
    #1c1210 14%,
    #3d2a22 14%,
    #5c3d30 55%,
    #4a3228 100%
  );
  box-shadow:
    inset -1px 0 0 rgba(255, 255, 255, 0.06),
    -3px 0 0 #120c0a,
    6px 10px 24px rgba(0, 0, 0, 0.45);
  transform: translateZ(4px);
  backface-visibility: hidden;
  pointer-events: none;
}

.reads-nightstand-book::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, #2a1c18 0%, #1a1210 100%);
  transform: rotateY(180deg) translateZ(4px);
  backface-visibility: hidden;
  pointer-events: none;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.2);
}

@keyframes reads-book-spin3d {
  0% {
    transform: rotateX(16deg) rotateY(0deg);
  }
  100% {
    transform: rotateX(16deg) rotateY(360deg);
  }
}

.reads-nightstand-book-spine {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 14%;
  background: linear-gradient(90deg, rgba(0, 0, 0, 0.35), transparent);
  border-radius: 1px 0 0 1px;
  transform: translateZ(6px);
  backface-visibility: hidden;
}

.reads-nightstand-book-pages {
  position: absolute;
  right: 0;
  top: 2px;
  bottom: 2px;
  width: 5px;
  background: linear-gradient(
    180deg,
    #e8e4dc 0%,
    #d4cfc4 30%,
    #c9c3b8 70%,
    #ddd8ce 100%
  );
  border-radius: 0 1px 1px 0;
  box-shadow: inset 1px 0 0 rgba(0, 0, 0, 0.08);
  transform: translateZ(6px);
  backface-visibility: hidden;
}

.reads-nightstand-copy {
  min-width: 0;
}

.reads-nightstand-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.5rem;
}

.reads-nightstand-bookname {
  margin: 0 0 0.2rem;
  font-size: clamp(1.35rem, 4vw, 1.65rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--text);
}

.reads-nightstand-bookname cite {
  font-style: normal;
}

.reads-nightstand-author {
  margin: 0 0 0.65rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.reads-nightstand-blurb {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--text-muted);
}

@media (max-width: 520px) {
  .reads-nightstand-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .reads-nightstand-book-stage {
    align-self: center;
  }
}

.reads-previous {
  margin: 0 0 1.75rem;
}

.reads-prev-list {
  margin: 0;
  padding-left: 1.25rem;
  list-style: disc;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

.reads-prev-list li {
  margin-bottom: 0.45rem;
}

.reads-prev-list li:last-child {
  margin-bottom: 0;
}

.reads-prev-list cite {
  font-style: normal;
  color: var(--text);
  font-weight: 500;
}

.reads-prev-sep {
  margin: 0 0.2rem;
  color: var(--text-muted);
}

.reads-prev-author {
  color: var(--text-muted);
  font-size: 0.9rem;
  letter-spacing: 0.02em;
}

.reads-substack-note {
  margin: 0 0 1.75rem;
  padding: 0.65rem 0 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  letter-spacing: 0.03em;
  border-top: 1px solid var(--border);
}

.reads-section-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0 0 0.65rem;
}

.reads-back {
  display: inline-block;
  margin-bottom: 1rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.reads-back:hover {
  color: var(--accent);
}

.reads-list {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--text-muted);
}

.reads-list li {
  margin-bottom: 0.5rem;
}

.reads-list a {
  color: var(--text);
}

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

.page--write .reads-back {
  margin-bottom: 1.25rem;
}

.write-body {
  max-width: 40rem;
}

.write-title {
  font-size: 1.75rem;
  font-weight: 600;
  margin: 0 0 1.5rem;
  letter-spacing: -0.02em;
}

.write-refs {
  margin-bottom: 2rem;
  padding: 0 0 0 1rem;
  background: transparent;
  border: none;
  border-left: 1px solid var(--border);
}

.write-refs-title {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin: 0 0 1rem;
}

.write-ref-group {
  margin-bottom: 1rem;
}

.write-ref-group:last-child {
  margin-bottom: 0;
}

.write-ref-label {
  font-size: 0.9rem;
  margin: 0 0 0.5rem;
  color: var(--text);
}

.write-ref-list {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--text-muted);
}

.write-ref-list li {
  margin-bottom: 0.4rem;
}

.write-ref-source {
  color: var(--text-muted);
}

.write-essay {
  margin-top: 0.5rem;
}

.write-section-heading {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin: 0 0 1rem;
}

.write-content {
  color: var(--text-muted);
}

.write-content p {
  margin: 0 0 1rem;
}

.write-splash-title {
  font-size: clamp(1.35rem, 4vw, 1.75rem);
  font-weight: 600;
  color: var(--text);
  line-height: 1.25;
  margin-bottom: 0.5rem;
}

.write-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.write-byline {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.write-lede-border {
  border-left: 1px solid var(--accent);
  padding-left: 1rem;
  margin-bottom: 1.5rem;
  color: var(--text);
  font-size: 1.05rem;
}

.write-opening {
  font-size: 1.05rem;
  color: var(--text);
  margin-bottom: 1.25rem;
}

.write-content-h2 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text);
  margin: 2rem 0 0.75rem;
}

.write-paper-card {
  margin: 1.25rem 0;
  padding: 0 0 1rem;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border);
  border-radius: 0;
}

.write-paper-meta {
  margin: 0 0 0.75rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.write-paper-link {
  font-size: 0.95rem;
}

.write-pullquote {
  margin: 1.5rem 0;
  padding: 0 0 0 1rem;
  border-left: 1px solid var(--border);
  font-style: italic;
  color: var(--text);
}

.write-curves-block {
  margin: 1.5rem 0;
  padding: 1rem 0 0;
  background: transparent;
  border: none;
  border-top: 1px solid var(--border);
}

.write-curves-label {
  font-weight: 600;
  color: var(--text);
  margin: 0 0 1rem;
  font-size: 0.95rem;
}

.write-curve-item {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1rem;
  align-items: flex-start;
}

.write-curve-item:last-child {
  margin-bottom: 0;
}

.write-curve-num {
  flex-shrink: 0;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.05em;
}

.write-curve-inner {
  flex: 1;
  font-size: 0.95rem;
}

.write-stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.write-stat-cell {
  padding: 1rem 0.5rem;
  background: transparent;
  border: none;
  border-top: 1px solid var(--border);
  text-align: center;
}

.write-stat-number {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text);
}

.write-stat-caption {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
  line-height: 1.35;
}

.write-highlight-strip {
  margin: 1.5rem 0;
  padding: 0.75rem 0 0.75rem 1rem;
  background: transparent;
  border: none;
  border-left: 1px solid rgba(158, 183, 232, 0.45);
}

.write-endfin {
  text-align: center;
  margin: 2.5rem 0 1rem;
  font-family: var(--font-body);
  font-style: italic;
  color: var(--text-muted);
}

.write-sources-note {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

@media (max-width: 860px) {
  .shell {
    flex-direction: column;
    align-items: stretch;
  }

  :root {
    --rail-width: 100%;
  }

  .rail {
    flex: none;
    width: 100%;
    border-right: none;
    border-bottom: none;
    padding-bottom: 0.75rem;
    position: relative;
    height: auto;
    max-height: none;
    overflow: visible;
    align-self: stretch;
  }

  .rail-label,
  .rail-nav--sidebar {
    display: none;
  }

  .mobile-jump {
    display: block;
  }

  .page--sub {
    padding-bottom: calc(var(--page-pad) + 5.5rem);
  }

  .page--home {
    padding-bottom: 5.5rem;
  }

  :root {
    --polaroid-w: min(88vw, 420px);
  }

  .polaroid-stage {
    min-height: auto;
    padding-bottom: 3rem;
  }

  .polaroid-scatter {
    min-height: 130vh;
  }
}

@media (max-width: 520px) {
  :root {
    --polaroid-w: min(92vw, 378px);
  }

  .rail-brand > span {
    font-size: clamp(1rem, 4.2vw, 1.15rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .polaroid,
  .scatter-cell,
  .polaroid-caption {
    transition: none;
  }

  .scatter-cell:hover .polaroid {
    transform: rotate(var(--tilt, 0deg));
  }

  .rail-brand > span {
    animation: none;
  }

  .reads-nightstand-book {
    animation: none;
    transform: rotateX(12deg) rotateY(-12deg);
  }
}