/* ayushr.com: amber phosphor on black. No frameworks. */

:root {
  color-scheme: dark;

  --bg: #0c0c0b;
  --bg-raised: #141412;
  --line: #262521;
  --line-strong: #3a3832;
  --text: #e8e4d9;
  --muted: #a39e92;
  --faint: #6b665c;
  --accent: #ffb547;
  --accent-soft: rgba(255, 181, 71, 0.12);
  --accent-glow: rgba(255, 181, 71, 0.35);
  --ok: #9bd48f;
  --branch: #6fc3c9;

  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;

  --wrap: 1080px;
  --gutter: clamp(16px, 4vw, 40px);
  --inner: min(var(--wrap), 100vw - 2 * var(--gutter));
}

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

/* Terminals don't draw code ligatures (-> as an arrow). The `font` shorthand resets this, hence !important. */
*, *::before, *::after { font-variant-ligatures: no-contextual !important; }

html { scroll-behavior: smooth; scroll-padding-top: 72px; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background-color: var(--bg);
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(255, 181, 71, 0.08), transparent 70%),
    radial-gradient(circle, rgba(255, 255, 255, 0.045) 1px, transparent 1.2px);
  background-size: 100% 100%, 24px 24px;
  background-attachment: fixed;
  color: var(--text);
  font: 400 17px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a { color: var(--accent); text-decoration: none; background-image: linear-gradient(var(--accent), var(--accent)); background-size: 100% 1px; background-position: 0 100%; background-repeat: no-repeat; transition: background-size .2s, color .2s; }
a:hover { background-size: 100% 100%; color: var(--bg); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

.wrap { width: var(--inner); margin-inline: auto; }

.sr-only, .skip:not(:focus) {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip:focus { position: fixed; top: 8px; left: 8px; z-index: 100; padding: 8px 12px; background: var(--accent); color: var(--bg); font-family: var(--mono); }

pre, code, .mono { font-family: var(--mono); }
.c { color: var(--faint); font-family: var(--mono); }

/* ---------- nav ---------- */

.nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(12, 12, 11, 0.78);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 52px; font: 500 14px/1 var(--mono); }
.nav a { background: none; color: var(--muted); }
.nav a:hover { color: var(--accent); }
.nav .brand { color: var(--text); font-weight: 700; }
.brand-ps1 { color: var(--accent); }
.nav nav { display: flex; gap: clamp(12px, 3vw, 28px); }
.nav nav a::before { content: "./"; color: var(--faint); }
@media (max-width: 420px) { .nav nav a::before { content: none; } }

/* ---------- shared terminal bits ---------- */

.line { margin: 0; font: 400 14px/1.6 var(--mono); }
.ps1 { color: var(--accent); margin-right: 1ch; user-select: none; }
.cmd { color: var(--text); }
.nw { white-space: nowrap; }

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

.hero { padding: clamp(40px, 8vh, 88px) 0 clamp(48px, 10vh, 104px); }

.js .reveal { opacity: 0; transform: translateY(6px); }
.js .reveal.on { opacity: 1; transform: none; transition: opacity .5s, transform .5s; }

.login { margin-bottom: 22px; color: var(--faint); font-size: 13px; }

.banner { margin: 18px 0 26px; font-weight: 400; }
.banner-wide, .banner-stacked {
  display: block; white-space: pre;
  font: 400 min(14px, var(--inner) / 60)/1.08 var(--mono);
  color: rgba(255, 181, 71, 0.38);
  letter-spacing: 0;
}
.banner b { font-weight: 400; color: var(--accent); text-shadow: 0 0 18px var(--accent-glow); }
.banner-stacked { display: none; font-size: min(14px, var(--inner) / 32); }
@media (max-width: 720px) {
  .banner-wide { display: none; }
  .banner-stacked { display: block; }
}

.roles { margin: 0; font: 500 15px/1.6 var(--mono); color: var(--text); }
.roles span { white-space: nowrap; }
.roles span:not(:last-child)::after { content: "·"; color: var(--faint); margin: 0 1ch; }
.tagline { margin: 6px 0 0; font-size: clamp(20px, 3vw, 26px); line-height: 1.35; color: var(--muted); max-width: 30ch; }

/* interactive shell */
.shell { margin-top: 40px; max-width: 760px; }
.shell-out { font: 400 14px/1.6 var(--mono); color: var(--muted); white-space: pre-wrap; overflow-wrap: anywhere; }
.shell-out .echo { color: var(--text); }
.shell-out .err { color: #ff8a7a; }
.shell-out a { color: var(--accent); }
.shell-out .block { margin-bottom: 10px; }
.shell-in { display: flex; align-items: baseline; cursor: text; }
.shell-in input {
  flex: 1; min-width: 0;
  background: none; border: 0; outline: none; padding: 0;
  color: var(--text); font: inherit; caret-color: var(--accent);
}
.shell-in input:focus-visible { outline: none; }
.shell-in:focus-within { background: linear-gradient(90deg, var(--accent-soft), transparent 70%); }
.hint { margin: 14px 0 0; font: 400 13px/1.6 var(--mono); color: var(--faint); }
.hint button {
  font: inherit; color: var(--muted); background: var(--bg-raised);
  border: 1px solid var(--line-strong); border-radius: 4px; padding: 1px 7px; cursor: pointer;
}
.hint button:hover { color: var(--accent); border-color: var(--accent); }

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

.section { padding: clamp(56px, 9vh, 96px) 0 0; }
.section > h2 {
  margin: 0 0 28px; padding-bottom: 12px;
  font: 500 15px/1.4 var(--mono);
  border-bottom: 1px dashed var(--line-strong);
}

.prose { max-width: 66ch; }
.prose p { margin: 0 0 1.1em; }
.prose .aside { color: var(--muted); font-size: 15px; }

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

.work {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}
@media (min-width: 960px) {
  .work { grid-template-columns: auto minmax(0, 1fr); gap: 40px; align-items: start; }
  .diagram-wrap { position: sticky; top: 84px; }
}

.diagram-wrap { margin: 0; }
.diagram {
  margin: 0; padding: 18px;
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: min(13.5px, (var(--inner) - 38px) / 34);
  line-height: 1.32;
  color: #858075;
  overflow: hidden;
}
.diagram span { transition: color .2s, text-shadow .2s; }
.diagram .r { color: #c9c3b6; }
.diagram[data-active="fs"] .r-fs,
.diagram[data-active="cr"] .r-cr,
.diagram[data-active="gpu"] .r-gpu,
.diagram[data-active="rdma"] .r-rdma,
.diagram[data-active="compat"] .r-compat,
.diagram[data-active="perf"] .r-perf,
.diagram[data-active="oss"],
.diagram[data-active="oss"] .r { color: var(--accent); text-shadow: 0 0 12px var(--accent-glow); }
.diagram-wrap figcaption { margin-top: 10px; font: 400 12.5px/1.5 var(--mono); color: var(--faint); }
@media (hover: none) { .diagram-wrap .fine { display: none; } }

.cards { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.card {
  position: relative;
  padding: 18px 20px 16px;
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: 8px;
  transition: border-color .2s, transform .2s, background-color .2s;
}
.card:hover, .card:focus-visible, .card.active { border-color: var(--accent); }
.card:focus-visible { outline: none; }
.card::before {
  content: ""; position: absolute; left: -1px; top: 14px; bottom: 14px; width: 2px;
  background: var(--accent); opacity: 0; transition: opacity .2s;
}
.card.active::before, .card:hover::before { opacity: 1; }
.card-path { margin: 0 0 4px; font: 400 12px/1.4 var(--mono); color: var(--muted); }
.card h3 { margin: 0 0 6px; font: 600 19px/1.3 var(--sans); }
.card p { margin: 0; font-size: 15.5px; line-height: 1.6; color: var(--muted); }
.card .metric {
  display: inline-flex; flex-wrap: wrap; gap: 0 .8ch;
  margin-top: 12px; padding: 3px 9px;
  font: 500 12.5px/1.5 var(--mono); color: var(--accent);
  background: var(--accent-soft); border-radius: 4px;
}
.card .metric span { color: var(--muted); font-weight: 400; }
.card code { font-size: .88em; color: var(--text); }

/* ---------- journey (git log --graph) ---------- */

.gitlog { list-style: none; margin: 0; padding: 0; font: 400 15px/1.6 var(--mono); max-width: 900px; }
.gitlog li {
  display: grid; grid-template-columns: 4ch 7ch minmax(0, 1fr) 9ch 16ch; gap: 0 1.5ch; align-items: baseline;
  padding: 3px 8px; margin: 0 -8px; border-radius: 4px;
}
.gitlog .edge { padding-top: 0; padding-bottom: 0; line-height: 1.25; }
.gitlog .commit:hover { background: var(--bg-raised); }
.gitlog .g { white-space: pre; }
.gitlog .g b { font-weight: 700; color: var(--accent); }
.gitlog .g i { font-style: normal; font-weight: 700; color: var(--branch); }
.gitlog .sha { color: #c99a52; }
.gitlog .msg { color: var(--text); }
.gitlog .refs { margin-right: .4ch; }
.gitlog .refs em { font-style: normal; font-weight: 700; color: var(--branch); }
.gitlog .refs u { text-decoration: none; font-weight: 700; color: var(--ok); }
.gitlog .where { color: var(--muted); }
.gitlog .where::before { content: "· "; color: var(--faint); }
.gitlog .meta { display: contents; }
.gitlog .when { color: var(--faint); text-align: right; white-space: nowrap; }
.gitlog .dur { white-space: nowrap; }
.gitlog .dur .n { display: inline-block; width: 4ch; color: var(--muted); }
.gitlog .dur .bar { color: var(--ok); letter-spacing: .05em; }
.gitlog .cursor { color: var(--ok); animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .gitlog .cursor { animation: none; } }
@media (max-width: 640px) {
  .gitlog { font-size: 13px; }
  .gitlog li { grid-template-columns: 4ch minmax(0, 1fr); }
  .gitlog .sha { display: none; }
  .gitlog .meta { display: flex; gap: 1.5ch; grid-column: 2; }
  .gitlog .when { text-align: left; }
}
.js .gitlog li { opacity: 0; transform: translateX(-6px); }
.js .gitlog.on li { opacity: 1; transform: none; transition: opacity .4s, transform .4s; transition-delay: calc(var(--i) * 70ms); }

/* ---------- writing ---------- */

.posts { list-style: none; margin: 0; padding: 0; max-width: 820px; }
.post { padding: 22px 0 24px; border-bottom: 1px solid var(--line); }
.post:first-child { padding-top: 0; }
.post-meta { margin: 0 0 6px; display: flex; flex-wrap: wrap; gap: 0 2ch; font: 400 13px/1.6 var(--mono); color: var(--faint); }
.post-meta time { color: var(--muted); }
.post-meta .venue { color: var(--accent); opacity: .85; }
@media (max-width: 560px) { .post-meta .perm { display: none; } }
.post h3 { margin: 0 0 8px; font: 600 clamp(19px, 2.4vw, 22px)/1.35 var(--sans); }
.post h3 a { color: var(--text); background-image: linear-gradient(var(--accent), var(--accent)); background-size: 0 1px; }
.post h3 a:hover { color: var(--bg); background-size: 100% 100%; }
.post h3 a::after { content: "\00a0↗"; color: var(--faint); font-family: var(--mono); font-size: .8em; }
.post p { margin: 0; color: var(--muted); font-size: 16px; max-width: 70ch; }
.post-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px !important; }
.post-tags span {
  font: 400 12px/1.5 var(--mono); color: var(--muted);
  padding: 2px 8px; border: 1px solid var(--line-strong); border-radius: 4px;
}
.more { margin: 18px 0 0; font-size: 13px; }

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

.ping { font: 400 14px/1.7 var(--mono); color: var(--muted); }
.ping p { margin: 0; overflow-wrap: anywhere; }
.ping .dim, .ping .stats { color: var(--faint); }
.ping .gap { margin-top: 12px; }
.ping .okc { color: var(--ok); }
@media (max-width: 560px) { .ping .stats { display: none; } }
.plan { margin: 24px 0 0; max-width: 60ch; padding-left: 2ch; border-left: 2px solid var(--accent); color: var(--text); }

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

.foot { margin-top: clamp(72px, 12vh, 128px); border-top: 1px solid var(--line); }
.foot-inner {
  display: flex; flex-wrap: wrap; gap: 6px 24px; justify-content: space-between;
  padding: 22px 0 32px; font: 400 13px/1.5 var(--mono); color: var(--muted);
}

/* ---------- long-form posts (for future self-hosted writing) ---------- */

.article { padding: clamp(40px, 8vh, 80px) 0 0; }
.article header { margin-bottom: 36px; }
.article h1 { margin: 10px 0 0; font: 600 clamp(28px, 5vw, 42px)/1.15 var(--sans); letter-spacing: -0.01em; }
.article .post-meta { margin: 0; }
.article .body { max-width: 70ch; }
.article .body h2 { margin: 2em 0 .6em; font: 600 24px/1.3 var(--sans); }
.article .body h2::before { content: "## "; color: var(--faint); font-family: var(--mono); font-weight: 400; }
.article .body h3 { margin: 1.6em 0 .5em; font: 600 19px/1.35 var(--sans); }
.article .body p, .article .body ul, .article .body ol { margin: 0 0 1.1em; }
.article .body li { margin-bottom: .3em; }
.article .body blockquote { margin: 1.4em 0; padding-left: 2ch; border-left: 2px solid var(--accent); color: var(--muted); }
.article .body img { max-width: 100%; height: auto; border-radius: 6px; }
.article .body :not(pre) > code {
  font-size: .86em; padding: .1em .35em; border-radius: 4px;
  background: var(--bg-raised); border: 1px solid var(--line); color: var(--accent);
}
.article .body pre {
  margin: 1.4em 0; padding: 16px 18px; overflow-x: auto;
  background: var(--bg-raised); border: 1px solid var(--line); border-radius: 8px;
  font-size: 14px; line-height: 1.6;
}
.article .body table { width: 100%; border-collapse: collapse; margin: 1.4em 0; font-size: 15px; }
.article .body th, .article .body td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); }
.article .body th { font: 500 13px var(--mono); color: var(--muted); }
.back { display: inline-block; margin-top: 48px; font: 400 14px var(--mono); }