/* zishaan1911.github.io
   One stylesheet, no framework. Four themes share the same tokens; every
   colour below comes from them, so a theme is just a block of variables. */

:root,
[data-theme="phosphor"] {
  --bg: #050b08;
  --bg-raised: #08130d;
  --bg-sunk: #030805;
  --line: #1b3325;
  --line-strong: #2d5a40;
  --fg: #cdeed8;
  --fg-dim: #86ac94;
  --accent: #4dff9a;
  --accent-ink: #03200f;
  --warm: #ffcf5c;
  --glow: rgba(77, 255, 154, 0.32);
  --scan: rgba(0, 0, 0, 0.22);
  --heat-0: #173021;
  --heat-1: #2f7a4c;
  --heat-2: #3fbf72;
  --heat-3: #4dff9a;
  --heat-4: #c9ffe0;
  color-scheme: dark;
}

[data-theme="amber"] {
  --bg: #0c0802;
  --bg-raised: #140e05;
  --bg-sunk: #080501;
  --line: #3a2a12;
  --line-strong: #6b4a1a;
  --fg: #ffe4b8;
  --fg-dim: #c9a26a;
  --accent: #ffb000;
  --accent-ink: #231500;
  --warm: #fff0c2;
  --glow: rgba(255, 176, 0, 0.3);
  --heat-0: #33230b;
  --heat-1: #7a5310;
  --heat-2: #bf8108;
  --heat-3: #ffb000;
  --heat-4: #ffe7a8;
  color-scheme: dark;
}

[data-theme="ice"] {
  --bg: #050a12;
  --bg-raised: #09121f;
  --bg-sunk: #03070d;
  --line: #1a2a40;
  --line-strong: #2b4a70;
  --fg: #d8eaff;
  --fg-dim: #91acc9;
  --accent: #6cc7ff;
  --accent-ink: #021424;
  --warm: #ffd479;
  --glow: rgba(108, 199, 255, 0.3);
  --heat-0: #15253a;
  --heat-1: #245a86;
  --heat-2: #3b8fcc;
  --heat-3: #6cc7ff;
  --heat-4: #d4efff;
  color-scheme: dark;
}

[data-theme="paper"] {
  --bg: #f3efe4;
  --bg-raised: #ebe5d5;
  --bg-sunk: #e4ddca;
  --line: #cdc3a9;
  --line-strong: #968b6d;
  --fg: #1c1a14;
  --fg-dim: #5a5443;
  --accent: #0b6e3a;
  --accent-ink: #f3efe4;
  --warm: #8a4f00;
  --glow: transparent;
  --scan: transparent;
  --heat-0: #ddd5bf;
  --heat-1: #a8c9a4;
  --heat-2: #5fa06d;
  --heat-3: #1f7a45;
  --heat-4: #0b4d29;
  color-scheme: light;
}

/* ─── font ─────────────────────────────────────────────────────────── */

/* JetBrains Mono (OFL, see assets/fonts/OFL.txt), self-hosted and subset to
   Latin plus box drawing, blocks and arrows. The Google Fonts build leaves
   those out, and the fallback font's different width breaks every diagram. */
@font-face {
  font-family: 'JetBrains Mono';
  src: url('../fonts/jetbrains-mono-regular.woff2') format('woff2');
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: 'JetBrains Mono';
  src: url('../fonts/jetbrains-mono-semibold.woff2') format('woff2');
  font-weight: 600;
  font-display: swap;
}
@font-face {
  font-family: 'JetBrains Mono';
  src: url('../fonts/jetbrains-mono-extrabold.woff2') format('woff2');
  font-weight: 800;
  font-display: swap;
}

/* ─── base ─────────────────────────────────────────────────────────── */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 4.5rem;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 400 15px/1.65 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-variant-ligatures: none;
  overflow-x: hidden;
}

/* scanlines + vignette; purely decorative, never intercepts input */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 50;
  background:
    repeating-linear-gradient(to bottom, transparent 0 2px, var(--scan) 2px 3px),
    radial-gradient(ellipse at center, transparent 55%, var(--scan) 100%);
}

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

a {
  color: var(--accent);
  text-decoration: underline dotted;
  text-underline-offset: 3px;
}
a:hover { background: var(--accent); color: var(--accent-ink); text-decoration: none; }
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

h1, h2, h3 { margin: 0; font-weight: 800; line-height: 1.3; }
p { margin: 0 0 0.8em; }
ul, ol { margin: 0; padding: 0; list-style: none; }
code { color: var(--warm); }
var { font-style: italic; }
pre { margin: 0; font: inherit; }
.dim { color: var(--fg-dim); font-weight: 400; }

.skip {
  position: absolute;
  left: -999px;
}
.skip:focus { left: 1rem; top: 1rem; z-index: 60; padding: 0.4em 0.8em; background: var(--accent); color: var(--accent-ink); }

/* ─── the window ───────────────────────────────────────────────────── */

.term {
  max-width: 1120px;
  margin: 1.5rem auto 3rem;
  border: 1px solid var(--line-strong);
  background: var(--bg-raised);
  box-shadow: 0 0 0 1px var(--bg-sunk), 0 0 60px -20px var(--glow);
}

.titlebar {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.55rem 1rem;
  border-bottom: 1px solid var(--line);
  background: var(--bg-sunk);
  font-size: 0.8rem;
  color: var(--fg-dim);
}
.dots { display: inline-flex; gap: 6px; }
.dots i { width: 11px; height: 11px; border-radius: 50%; border: 1px solid var(--line-strong); }
.dots i:first-child { background: var(--accent); border-color: var(--accent); }
.path { flex: 1; text-align: center; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.themes { display: flex; gap: 0.25rem; }
.themes button {
  font: inherit;
  color: var(--fg-dim);
  background: none;
  border: 1px solid transparent;
  padding: 0.05rem 0.4rem;
  cursor: pointer;
}
.themes button:hover { color: var(--fg); border-color: var(--line-strong); }
.themes button[aria-pressed="true"] { color: var(--accent-ink); background: var(--accent); }

.tabs {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  gap: 0.2rem;
  padding: 0.45rem 1rem;
  background: var(--bg-raised);
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }
.tabs a {
  flex: none;
  padding: 0.15rem 0.6rem;
  color: var(--fg-dim);
  text-decoration: none;
  border: 1px solid transparent;
}
.tabs a:hover { color: var(--fg); background: none; border-color: var(--line-strong); }
.tabs a[aria-current="true"] { color: var(--accent-ink); background: var(--accent); }
.tabs kbd {
  font: inherit;
  margin-right: 0.35rem;
  opacity: 0.6;
}

main { padding: 0 clamp(1rem, 3vw, 2.5rem); }

section { padding: 3.2rem 0 1rem; }

.h {
  font-size: 1.15rem;
  margin-bottom: 1.2rem;
  color: var(--fg);
  text-transform: lowercase;
}
.h .ps1, .ps1 { color: var(--accent); font-weight: 400; }
.lede { color: var(--fg-dim); max-width: 72ch; margin-bottom: 1.6rem; }

/* ─── hero ─────────────────────────────────────────────────────────── */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
  gap: 2.5rem;
  align-items: start;
  padding-top: 2.4rem;
}

/* 53 columns of banner must fit the column, so size the font from the
   viewport and cap it; 0.6em is JetBrains Mono's advance width. */
.banner {
  font-size: clamp(5px, calc((100vw - 3rem) / 53 / 0.61), 13px);
  line-height: 1.32;
  color: var(--accent);
  text-shadow: 0 0 6px var(--glow);
  margin-bottom: 1.4rem;
  overflow: hidden;
}
@media (min-width: 900px) {
  .banner { font-size: min(13px, calc((100vw - 5rem) * 0.5 / 53 / 0.61)); }
}

h1 { font-size: 1.35rem; margin-bottom: 0.6rem; }
h1 .role { color: var(--fg-dim); font-weight: 400; }

.tagline { font-size: 1rem; max-width: 60ch; min-height: 3.3em; }
.cursor { color: var(--accent); animation: blink 1.05s steps(1) infinite; margin-left: 1px; }
@keyframes blink { 50% { opacity: 0; } }

.cta { display: flex; flex-wrap: wrap; gap: 0.6rem; margin: 1.2rem 0 1.6rem; }
.btn {
  padding: 0.3rem 0.7rem;
  font-size: 0.9rem;
  border: 1px solid var(--line-strong);
  color: var(--fg);
  text-decoration: none;
}
.btn::before { content: "["; color: var(--accent); margin-right: 0.35rem; }
.btn::after { content: "]"; color: var(--accent); margin-left: 0.35rem; }
.btn:hover::before, .btn:hover::after { color: var(--accent-ink); }

/* shell */
.shell {
  border: 1px solid var(--line);
  background: var(--bg-sunk);
  padding: 0.6rem 0.8rem 0.5rem;
  font-size: 0.85rem;
}
.shell-out { max-height: 15.5em; overflow-y: auto; white-space: pre-wrap; word-break: break-word; }
.shell-out:empty { display: none; }
.shell-out p { margin: 0; }
.shell-out .echo { color: var(--fg-dim); }
.shell-out .err { color: var(--warm); }
.shell-line { display: flex; gap: 0.6rem; align-items: center; }
.shell-line input {
  flex: 1;
  min-width: 0;
  font: inherit;
  color: var(--fg);
  background: transparent;
  border: 0;
  padding: 0.2rem 0;
  caret-color: var(--accent);
}
.shell-line input:focus { outline: none; }
.shell:focus-within { border-color: var(--line-strong); }
.shell-line input::placeholder { color: var(--fg-dim); opacity: 0.7; }
.shell-hint { margin: 0.35rem 0 0; font-size: 0.75rem; color: var(--fg-dim); }

/* neofetch */
.fetch {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 1.3rem;
  padding: 1.1rem;
  border: 1px solid var(--line);
  background: var(--bg-sunk);
  font-size: 0.82rem;
}
.photo {
  margin: 0;
  position: relative;
  width: 150px;
  height: 150px;
  border: 1px solid var(--line-strong);
  overflow: hidden;
  background: var(--accent);
}
/* the photo is rendered in the theme's phosphor colour: greyscale it, then
   multiply against the accent underneath */
.photo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1) contrast(1.25) brightness(1.05);
  mix-blend-mode: multiply;
}
.photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(to bottom, transparent 0 2px, rgba(0, 0, 0, 0.28) 2px 3px);
}
[data-theme="paper"] .photo { background: #b9d9c2; }
[data-theme="paper"] .photo::after { display: none; }

.fetch-host { margin: 0; color: var(--accent); }
.fetch-host b { font-weight: 800; }
.fetch-rule { margin: 0 0 0.4rem; color: var(--line-strong); overflow: hidden; white-space: nowrap; }
.fetch dl { margin: 0; display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 0.15rem 0.9rem; }
.fetch dt { color: var(--accent); font-weight: 600; }
.fetch dd { margin: 0; }
.dot-live { color: var(--accent); animation: pulse 2.4s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: 0.35; } }
.swatches { display: flex; margin: 0.8rem 0 0; }
.swatches i { width: 1.4rem; height: 0.75rem; }
.swatches i:nth-child(1) { background: var(--heat-0); }
.swatches i:nth-child(2) { background: var(--heat-1); }
.swatches i:nth-child(3) { background: var(--heat-2); }
.swatches i:nth-child(4) { background: var(--heat-3); }
.swatches i:nth-child(5) { background: var(--heat-4); }
.swatches i:nth-child(6) { background: var(--warm); }

/* ─── highlights ───────────────────────────────────────────────────── */

.highlights { padding-top: 2.6rem; }
.tiles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.tile { background: var(--bg-raised); padding: 1rem 1.1rem 1.1rem; }
.tile-num {
  display: block;
  font-size: 1.75rem;
  line-height: 1.2;
  color: var(--warm);
  text-shadow: 0 0 14px var(--glow);
  margin-bottom: 0.3rem;
}
.tile-label { color: var(--fg-dim); font-size: 0.82rem; }

.heat { margin: 1.6rem 0 0; }
.heat figcaption { font-size: 0.8rem; margin-bottom: 0.5rem; }
.heatmap {
  font-size: 0.72rem;
  line-height: 1.32;
  overflow-x: auto;
  padding-bottom: 0.3rem;
  color: var(--fg-dim);
}
.heatmap .l0 { color: var(--heat-0); }
.heatmap .l1 { color: var(--heat-1); }
.heatmap .l2 { color: var(--heat-2); }
.heatmap .l3 { color: var(--heat-3); }
.heatmap .l4 { color: var(--heat-4); text-shadow: 0 0 6px var(--glow); }
.heat-total { margin-top: 0.4rem; font-size: 0.8rem; color: var(--fg-dim); }
.heat-total b { color: var(--warm); }

/* ─── project cards ────────────────────────────────────────────────── */

.card {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 2rem;
  padding: 1.5rem 1.5rem 1.3rem;
  margin-bottom: 1.4rem;
  border: 1px solid var(--line);
  background: var(--bg-raised);
  position: relative;
  transition: border-color 0.2s;
}
.card:hover { border-color: var(--line-strong); }
.card::before {
  /* corner ticks, like a selection in a TUI */
  content: "";
  position: absolute;
  inset: -1px;
  pointer-events: none;
  background:
    linear-gradient(var(--accent), var(--accent)) top left / 10px 1px no-repeat,
    linear-gradient(var(--accent), var(--accent)) top left / 1px 10px no-repeat,
    linear-gradient(var(--accent), var(--accent)) bottom right / 10px 1px no-repeat,
    linear-gradient(var(--accent), var(--accent)) bottom right / 1px 10px no-repeat;
}
.card:target { border-color: var(--accent); }

.card-head { display: flex; align-items: baseline; flex-wrap: wrap; gap: 0.3rem 0.8rem; margin-bottom: 0.7rem; }
.card-idx { color: var(--accent); font-size: 0.8rem; }
.card-head h3 { font-size: 1.25rem; }
.badge {
  font-size: 0.72rem;
  padding: 0.05rem 0.45rem;
  border: 1px solid var(--line-strong);
  color: var(--fg-dim);
}
.badge-warm { color: var(--warm); border-color: var(--warm); }
.byline { color: var(--fg-dim); font-size: 0.82rem; margin-top: -0.3rem; }
.card-lede { margin-bottom: 0.9rem; }

.bullets { margin-bottom: 1rem; }
.bullets li { position: relative; padding-left: 1.4em; margin-bottom: 0.45em; color: var(--fg-dim); font-size: 0.88rem; }
.bullets li::before { content: "▸"; position: absolute; left: 0.1em; color: var(--accent); }

.metrics { display: flex; flex-wrap: wrap; gap: 0.5rem 1.4rem; margin-bottom: 0.9rem; font-size: 0.82rem; color: var(--fg-dim); }
.metrics b { color: var(--warm); font-size: 1.05rem; margin-right: 0.25rem; }

.tags { display: flex; flex-wrap: wrap; gap: 0.35rem 0.4rem; margin-bottom: 0.9rem; font-size: 0.75rem; color: var(--fg-dim); }
.tags li::before { content: "["; color: var(--line-strong); }
.tags li::after { content: "]"; color: var(--line-strong); }

.links { display: flex; flex-wrap: wrap; gap: 0.3rem 1.1rem; margin: 0; font-size: 0.85rem; }
.links a::before { content: "→ "; }

.art {
  align-self: center;
  justify-self: center;
  max-width: 100%;
  overflow-x: auto;
  font-size: 0.8rem;
  line-height: 1.32;
  color: var(--accent);
  text-shadow: 0 0 8px var(--glow);
  padding: 1rem 1.1rem;
  border: 1px dashed var(--line);
  background: var(--bg-sunk);
}
.art-bh { line-height: 1.15; font-size: 0.8rem; }

.math {
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--warm);
  padding: 0.7rem 0.9rem;
  margin-bottom: 1rem;
  border-left: 2px solid var(--warm);
  background: var(--bg-sunk);
  overflow-x: auto;
}

/* ─── experience ───────────────────────────────────────────────────── */

.timeline { margin-bottom: 2.4rem; }
.timeline li {
  position: relative;
  padding: 0 0 1.5rem 1.8rem;
  border-left: 1px solid var(--line-strong);
  margin-left: 0.4rem;
}
.timeline li:last-child { padding-bottom: 0.2rem; }
.timeline li::before {
  content: "●";
  position: absolute;
  left: -0.42em;
  top: 0;
  line-height: 1.4;
  color: var(--accent);
  background: var(--bg-raised);
}
.timeline li.edu::before { content: "◆"; color: var(--warm); }
.timeline h3 { font-size: 1rem; margin-bottom: 0.35rem; }
.timeline .at { color: var(--fg-dim); font-weight: 400; }
.timeline p { color: var(--fg-dim); max-width: 78ch; font-size: 0.88rem; }
.timeline .when { color: var(--accent); font-size: 0.78rem; margin-bottom: 0.15rem; }

.split { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.4rem; }

.box {
  position: relative;
  border: 1px solid var(--line);
  padding: 1.5rem 1.3rem 1.1rem;
  margin-top: 0.8rem;
  background: var(--bg-raised);
}
.box-title {
  position: absolute;
  top: -0.8em;
  left: 0.9rem;
  padding: 0 0.5rem;
  background: var(--bg-raised);
  font-size: 0.85rem;
  color: var(--accent);
}
.box > p { font-size: 0.9rem; }

.tree li { position: relative; padding-left: 1.8em; margin-bottom: 0.35rem; font-size: 0.84rem; color: var(--fg-dim); }
.tree li::before { content: "├─"; position: absolute; left: 0; color: var(--line-strong); }
.tree li:last-child::before { content: "└─"; }
.tree b { color: var(--fg); font-weight: 600; margin-right: 0.35rem; }

.ls li { font-size: 0.84rem; margin-bottom: 0.3rem; padding-left: 1.3em; position: relative; }
.ls li::before { content: "-"; position: absolute; left: 0.2em; color: var(--accent); }

/* ─── activity + repos (rendered by scripts/render.mjs) ───────────── */

.updates { margin-bottom: 2rem; border-top: 1px solid var(--line); }
.updates li {
  display: grid;
  grid-template-columns: 7.2em 11em minmax(0, 1fr);
  gap: 1rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.86rem;
}
.updates time { color: var(--fg-dim); }
.updates .repo { color: var(--accent); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.updates .kind { color: var(--warm); margin-right: 0.4em; }
.updates-empty { color: var(--fg-dim); }

.langs { font-size: 0.82rem; }
.langs li { display: grid; grid-template-columns: 9em max-content 4.5em; gap: 0.8rem; white-space: nowrap; }
.langs .bar { color: var(--accent); overflow: hidden; }
.langs .bar i { font-style: normal; color: var(--line); }
.langs .pct { text-align: right; color: var(--fg-dim); }

.groups { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.4rem; align-items: start; }
.group .box-title { font-size: 0.85rem; }
.group-blurb { color: var(--fg-dim); font-size: 0.8rem; margin: -0.4rem 0 0.8rem; }
.repo-row { padding: 0.55rem 0; border-top: 1px dashed var(--line); }
.repo-row:first-of-type { border-top: 0; padding-top: 0; }
.repo-name { font-weight: 600; font-size: 0.9rem; }
.repo-meta { font-size: 0.72rem; color: var(--fg-dim); margin-left: 0.5rem; }
.repo-desc { margin: 0.15rem 0 0; font-size: 0.8rem; color: var(--fg-dim); }

/* ─── footer ───────────────────────────────────────────────────────── */

.foot {
  margin-top: 3rem;
  padding: 1rem clamp(1rem, 3vw, 2.5rem);
  border-top: 1px solid var(--line);
  background: var(--bg-sunk);
  font-size: 0.75rem;
  color: var(--fg-dim);
}
.foot p { margin: 0; }

/* ─── small screens ────────────────────────────────────────────────── */

@media (max-width: 900px) {
  .hero { grid-template-columns: minmax(0, 1fr); gap: 2rem; }
  .card { grid-template-columns: minmax(0, 1fr); gap: 1.2rem; }
  .art { justify-self: stretch; }
  .groups { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 720px) {
  body { font-size: 14px; }
  .term { margin: 0; border-left: 0; border-right: 0; }
  .titlebar { flex-wrap: wrap; justify-content: space-between; }
  .path { display: none; }
  .tiles { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tile-num { font-size: 1.35rem; }
  .split { grid-template-columns: minmax(0, 1fr); }
  .fetch { grid-template-columns: minmax(0, 1fr); }
  .photo { width: 120px; height: 120px; }
  .card { padding: 1.2rem 1rem 1rem; }
  .updates li { grid-template-columns: minmax(0, 1fr); gap: 0.1rem; }
  .langs li { grid-template-columns: 6.5em minmax(0, 1fr) 3.6em; gap: 0.5rem; }
  .art { font-size: 0.7rem; }
}

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

@media print {
  body::before, .titlebar, .tabs, .shell, .heat { display: none; }
  .term { border: 0; box-shadow: none; }
}