/* One narrow monospace column on faint graph paper, in the same family as deepanshu-rohilla.github.io.
   Featured items and the portrait are framed like detection boxes (corner brackets + a label tab with a
   confidence score). Writing and papers are grouped by year in a quiet index. */
:root {
  --paper: #f3f2ed;
  --grid: rgba(40, 50, 70, 0.055);
  --ink: #16191a;
  --ink-2: #6b6f6c;
  --line: #d8d8d0;
  --box: #2a4f8f;
  --on-box: #f3f2ed;
  color-scheme: light;
  --serif: "Instrument Serif", "Iowan Old Style", Georgia, serif;
  --mono: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--ink);
  font-family: var(--mono); font-size: 14px; line-height: 22px;
  -webkit-font-smoothing: antialiased;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
img { max-width: 100%; }
[hidden] { display: none !important; }
a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 2px solid var(--box); outline-offset: 3px; }
p { margin: 0; }
.muted { color: var(--ink-2); }
.link { border-bottom: 1px solid var(--line); }
.link:hover { border-color: var(--box); color: var(--box); }

.wrap { max-width: 700px; margin: 0 auto; padding-block: 44px 64px; display: flex; flex-direction: column; gap: 56px; }

/* Header */
header.top { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; font-size: 13px; }
.mark { display: flex; align-items: center; gap: 8px; }
.mark .dot { width: 8px; height: 8px; border: 1.5px solid var(--box); }
nav { display: flex; flex-wrap: wrap; gap: 6px; color: var(--ink-2); }
nav a:hover, nav a[aria-current] { color: var(--ink); }
nav .sep { color: var(--line); }

/* Detection-box frame */
.bbox { position: relative; padding: 14px 16px; }
.bbox::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  --c: var(--box); --l: 12px; --w: 1.5px;
  background:
    linear-gradient(var(--c),var(--c)) top left / var(--l) var(--w),
    linear-gradient(var(--c),var(--c)) top left / var(--w) var(--l),
    linear-gradient(var(--c),var(--c)) top right / var(--l) var(--w),
    linear-gradient(var(--c),var(--c)) top right / var(--w) var(--l),
    linear-gradient(var(--c),var(--c)) bottom left / var(--l) var(--w),
    linear-gradient(var(--c),var(--c)) bottom left / var(--w) var(--l),
    linear-gradient(var(--c),var(--c)) bottom right / var(--l) var(--w),
    linear-gradient(var(--c),var(--c)) bottom right / var(--w) var(--l);
  background-repeat: no-repeat;
  transition: inset .15s ease;
}
.label {
  position: absolute; top: -10px; left: 0;
  font-size: 10.5px; line-height: 18px; font-weight: 500; padding: 0 6px;
  background: var(--box); color: var(--on-box); white-space: nowrap;
}

/* Profile */
.profile { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 28px; align-items: center; }
.portrait { width: 120px; aspect-ratio: 1; max-width: 100%; padding: 5px; }
.portrait img { display: block; width: 100%; height: 100%; object-fit: cover; }
.profile h1 { margin: 0; font-family: var(--serif); font-weight: 400; font-size: 40px; line-height: 44px; letter-spacing: -0.01em; }
.profile .meta { margin-top: 8px; display: flex; flex-direction: column; }
.socials { display: flex; flex-wrap: wrap; gap: 4px 16px; margin-top: 12px; font-size: 13px; }
.email { color: var(--ink-2); }

/* Sections */
.sec { display: flex; flex-direction: column; gap: 18px; scroll-margin-top: 24px; }
.sec-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; padding-bottom: 8px; border-bottom: 1px solid var(--line); }
.sec-head h2 { margin: 0; font-size: 12px; font-weight: 500; text-transform: lowercase; letter-spacing: 0.04em; color: var(--ink-2); }
.sec-head h2 span { color: var(--box); }
.sec-head .aside { font-size: 12px; color: var(--ink-2); }
.sec-head a.aside:hover { color: var(--box); }

.intro { display: flex; flex-direction: column; gap: 14px; max-width: 62ch; }
.lede { font-family: var(--serif); font-size: 24px; line-height: 31px; }
.lede em { color: var(--box); }
.lede.thesis { font-size: 20px; line-height: 28px; max-width: 62ch; }

.cols { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px; margin-top: 6px; }
h3.sub { margin: 0 0 8px; font-size: 12px; font-weight: 500; color: var(--ink-2); }
.tags { display: flex; flex-wrap: wrap; gap: 4px 14px; list-style: none; margin: 0; padding: 0; font-size: 13px; }
.tags li::before { content: "▫ "; color: var(--box); }
.edu { list-style: none; margin: 0; padding: 0; font-size: 13px; }
.edu li { display: flex; flex-direction: column; }

/* Label + sentence lists (outside the lab) */
.people { margin: 0; display: flex; flex-direction: column; max-width: 62ch; }
.people dt { font-weight: 600; margin-top: 14px; }
.people dt:first-child { margin-top: 0; }
.people dd { margin: 2px 0 0; color: var(--ink-2); font-size: 13px; line-height: 20px; }

/* Featured */
.strip { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(230px, calc((100% - 40px) / 2.4)); gap: 20px;
  overflow-x: auto; scroll-snap-type: x mandatory; padding: 14px 2px 12px; scrollbar-width: thin; scrollbar-color: var(--line) transparent; }
.strip > .fcard { scroll-snap-align: start; }
.strip:focus-visible { outline: 2px solid var(--box); outline-offset: 4px; }
.strip-nav { display: flex; gap: 6px; }
.strip-nav button { font: 500 12px/1 var(--mono); color: var(--ink-2); background: transparent; border: 1px solid var(--line); padding: 4px 8px; cursor: pointer; }
.strip-nav button:hover { color: var(--box); border-color: var(--box); }
.fcard { display: flex; flex-direction: column; gap: 6px; padding-top: 20px; background: color-mix(in srgb, var(--paper) 70%, transparent); }
a.fcard:hover::before { inset: -4px; }
.fcard .t { font-weight: 600; }
.fcard .d { font-size: 12.5px; line-height: 18px; color: var(--ink-2); }
.fcard .when { font-size: 12px; color: var(--ink-2); margin-top: auto; padding-top: 6px; }

/* Year-grouped index: writing, papers */
.year { display: grid; grid-template-columns: 64px minmax(0, 1fr); gap: 16px; }
.year + .year { margin-top: 10px; }
.yr-label { font-family: var(--serif); font-size: 22px; line-height: 26px; color: var(--ink-2); }
.posts { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; }
.posts li + li { border-top: 1px dashed var(--line); }
.posts .row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 2px 16px; padding: 9px 0; }
.posts .t { font-weight: 500; }
.posts a.row:hover .t { color: var(--box); }
.posts .date { font-size: 12px; color: var(--ink-2); font-variant-numeric: tabular-nums; white-space: nowrap; }
.posts .d { grid-column: 1 / -1; font-size: 12.5px; line-height: 18px; color: var(--ink-2); max-width: 62ch; }
.posts .d .me { color: var(--ink); }
.posts .go { grid-column: 1 / -1; font-size: 12px; color: var(--box); }
.new { font-size: 10.5px; font-weight: 500; color: var(--box); border: 1px solid var(--box); padding: 0 4px; margin-left: 8px; vertical-align: 1px; white-space: nowrap; }

/* Timeline: research and experience */
ol.timeline { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; }
ol.timeline li { display: grid; grid-template-columns: 104px minmax(0, 1fr); gap: 16px; padding: 10px 0; border-top: 1px dashed var(--line); }
ol.timeline li:first-child { border-top: 0; }
ol.timeline .when { font-size: 12px; color: var(--box); font-variant-numeric: tabular-nums; padding-top: 1px; }
ol.timeline .t { font-weight: 600; }
ol.timeline .d { font-size: 12.5px; line-height: 19px; color: var(--ink-2); margin-top: 2px; max-width: 62ch; }

footer { font-size: 12px; color: var(--ink-2); display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; border-top: 1px solid var(--line); padding-top: 16px; }
footer a:hover { color: var(--box); }

@media (max-width: 600px) {
  .wrap { padding-block: 28px 48px; gap: 44px; }
  .profile { grid-template-columns: 84px minmax(0, 1fr); gap: 20px; }
  .portrait { width: 84px; }
  .profile h1 { font-size: 32px; line-height: 36px; }
  .cols { grid-template-columns: minmax(0, 1fr); }
  .strip { grid-auto-columns: 78%; }
  .year { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .posts .row { grid-template-columns: minmax(0, 1fr); }
  ol.timeline li { grid-template-columns: minmax(0, 1fr); gap: 2px; }
}
@media (prefers-reduced-motion: reduce) { .bbox::before { transition: none; } }

/* Recent open-source patches: a quiet list in the corner of the about section */
.patches { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; font-size: 12px; line-height: 19px; }
.patches span { color: var(--ink-2); }
.more { margin-top: 8px; font: 500 11.5px/1 var(--mono); color: var(--ink-2); background: transparent; border: 1px solid var(--line); padding: 5px 8px; cursor: pointer; }
.more:hover { color: var(--box); border-color: var(--box); }

/* Reading: book covers on a shelf, title + author under each */
.books { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 16px 14px; }
.book { display: flex; flex-direction: column; gap: 6px; }
.book img { width: 100%; aspect-ratio: 2 / 3; object-fit: cover; display: block; box-shadow: 0 1px 0 var(--line), 3px 4px 0 rgba(22, 25, 26, 0.12); transition: transform .15s ease; }
.book:hover img { transform: translateY(-3px) rotate(-1deg); }
.book .bt { font-size: 12px; line-height: 16px; font-weight: 600; }
.book .ba { font-size: 11px; line-height: 14px; color: var(--ink-2); margin-top: -4px; }
@media (max-width: 600px) {
  .books { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (prefers-reduced-motion: reduce) { .book img { transition: none; } }

/* About: bigger body text with marker highlights, and a hello line */
.intro .big-p { font-size: 15.5px; line-height: 26px; }
mark { color: inherit; padding: 0 2px; -webkit-box-decoration-break: clone; box-decoration-break: clone;
  background: linear-gradient(180deg, transparent 54%, rgba(42, 79, 143, 0.11) 54%, rgba(42, 79, 143, 0.11) 90%, transparent 90%); }
.hello { font-size: 13.5px; line-height: 22px; max-width: 62ch; border-left: 2px solid var(--box); padding-left: 12px; color: var(--ink-2); }
.hello b { color: var(--ink); font-weight: 600; }

/* On X: one quiet line per post */
.tweets { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; }
.tweets a { display: flex; justify-content: space-between; gap: 16px; padding: 7px 0; border-bottom: 1px dashed var(--line); font-size: 13px; }
.tweets li:last-child a { border-bottom: 0; }
.tweets a:hover .tt { color: var(--box); }
.tweets .tm { color: var(--ink-2); font-size: 12px; white-space: nowrap; }
@media (max-width: 600px) { .tweets a { flex-direction: column; gap: 2px; } }