/* ============================================================
   Nischal Chandra
   Editorial layout: ruled sections, one accent, no cards.
   ============================================================ */

:root {
  --paper: #ecebe5;
  --paper-2: #e0ded5;
  --ink: #0e0f0f;
  --ink-2: #3a3c3b;
  --mute: #5f605a;
  --rule: rgba(14, 15, 15, 0.2);
  --blue: #1b26f0;
  --blue-lt: #8d95ff;
  --on-ink: #e9e8e1;
  --on-ink-mute: #9b9c94;

  --serif: "Newsreader", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;

  --gutter: clamp(1.25rem, 4vw, 3rem);
  --wrap: 1320px;
  --bar: 3.5rem;
  --ease: cubic-bezier(0.19, 0.8, 0.22, 1);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--bar);
  overflow-x: clip;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.125rem;
  line-height: 1.6;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  padding-top: var(--bar);
}

body.menu-open { overflow: hidden; }

::selection { background: var(--blue); color: var(--paper); }

a { color: inherit; text-decoration: none; }

ul, dl { list-style: none; }

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

:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }

.wrap {
  width: min(var(--wrap), 100% - 2 * var(--gutter));
  margin-inline: auto;
}

.vh {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip {
  position: absolute;
  left: var(--gutter);
  top: -4rem;
  z-index: 300;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 0.8rem;
  padding: 0.6rem 0.9rem;
}
.skip:focus { top: 0.5rem; }

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

.bar {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 200;
  height: var(--bar);
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}

.bar::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 2px;
  background: var(--blue);
  transform: scaleX(var(--p, 0));
  transform-origin: left;
}

.bar-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.nav {
  display: flex;
  gap: clamp(1rem, 2.2vw, 2.1rem);
  font-family: var(--mono);
  font-size: 0.75rem;
}

.nav a {
  color: var(--ink-2);
  transition: color 0.2s;
}

.nav a span { color: var(--mute); margin-right: 0.2rem; }

.nav a:hover,
.nav a.active { color: var(--blue); }

.nav a:hover span,
.nav a.active span { color: var(--blue); }

.menu-btn {
  display: none;
  background: none;
  border: 0;
  border-bottom: 1px solid currentColor;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.8rem;
  padding: 0 0 1px;
  cursor: pointer;
}

/* ---------- Hero ---------- */

.hero { padding: clamp(1.5rem, 3vw, 2.5rem) 0 clamp(3.5rem, 8vw, 7rem); }

.hero-meta {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--mute);
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--ink);
}

.hero-meta i { font-style: normal; color: var(--blue); margin: 0 0.25rem; }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 4.4fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: end;
  margin-top: clamp(2rem, 5vw, 4.5rem);
}

.name {
  font-weight: 300;
  font-size: clamp(3.4rem, 11.2vw, 10.25rem);
  line-height: 0.86;
  letter-spacing: -0.045em;
}

.ln {
  display: block;
  overflow: hidden;
  padding: 0.16em 0.16em 0.12em 0.1em;
  margin: -0.16em 0 -0.12em -0.1em;
}

.ln > span {
  display: block;
  animation: rise 1.15s var(--ease) both;
}

.ln.l2 { padding-left: 0.62em; font-style: italic; }
.ln.l2 > span { animation-delay: 0.12s; }

.dr {
  font-size: 0.34em;
  font-style: italic;
  font-weight: 300;
  letter-spacing: -0.01em;
  line-height: 0;
  margin-right: 0.1em;
  vertical-align: 1.25em;
}

@keyframes rise {
  from { transform: translateY(105%); }
  to   { transform: none; }
}

.lede {
  font-size: clamp(1.3rem, 2vw, 1.8rem);
  line-height: 1.32;
  letter-spacing: -0.012em;
  max-width: 28em;
  margin-top: clamp(1.75rem, 3vw, 2.75rem);
  color: var(--ink-2);
}

.hero-links {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  margin-top: 2rem;
  font-family: var(--mono);
  font-size: 0.82rem;
}

.hero-links a {
  border-bottom: 1px solid var(--ink);
  padding-bottom: 2px;
  transition: color 0.2s, border-color 0.2s;
}

.hero-links a:hover { color: var(--blue); border-color: var(--blue); }

.portrait {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--paper-2);
}

.portrait img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 52% 50%;
  transform-origin: 52% 60%;
  filter: grayscale(1) contrast(1.08) brightness(1.04);
  transition: filter 0.7s var(--ease), transform 1.4s var(--ease);
}

.portrait:hover img {
  filter: none;
  transform: scale(1.04);
}

.portrait figcaption {
  position: absolute;
  left: 0; bottom: 0;
  background: var(--paper);
  font-family: var(--mono);
  font-size: 0.72rem;
  padding: 0.55rem 0.9rem 0.45rem 0;
}

.figures {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0 var(--gutter);
  margin-top: clamp(3rem, 7vw, 6rem);
}

.fig {
  border-top: 1px solid var(--ink);
  padding-top: 0.9rem;
}

.fig-n {
  display: block;
  font-weight: 300;
  font-size: clamp(2.8rem, 6vw, 5.5rem);
  line-height: 1;
  letter-spacing: -0.04em;
  font-variant-numeric: lining-nums tabular-nums;
}

.fig-l {
  display: block;
  margin-top: 0.7rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.5;
  color: var(--mute);
  max-width: 17em;
}

/* ---------- Sections ---------- */

.sec { padding: clamp(2.5rem, 5vw, 4.5rem) 0 clamp(4rem, 8vw, 7.5rem); }

.sec-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 2.4fr) minmax(0, 9fr);
  gap: 2rem clamp(1.5rem, 4vw, 4rem);
  padding-top: 1.25rem;
}

.sec-grid::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: currentColor;
  transform-origin: left;
}

.js .sec-grid::before {
  transform: scaleX(0);
  transition: transform 1.3s var(--ease);
}
.js .sec-grid.in::before { transform: scaleX(1); }

.sec-label {
  position: sticky;
  top: calc(var(--bar) + 1.25rem);
  align-self: start;
  display: flex;
  gap: 0.9rem;
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.4;
}

.sec-label h2 { font: inherit; }
.num { color: var(--blue); }

.sec-body { min-width: 0; }

.display {
  font-weight: 300;
  font-size: clamp(1.9rem, 3.9vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -0.028em;
  max-width: 19em;
}

.display em { font-style: italic; color: var(--blue); }

/* About */

.cols {
  columns: 2 19rem;
  column-gap: clamp(1.5rem, 4vw, 3.5rem);
  margin-top: clamp(2.5rem, 5vw, 4rem);
  color: var(--ink-2);
}

.cols p { margin-bottom: 1.1rem; break-inside: avoid-column; }
.cols strong { font-weight: 500; color: var(--ink); }

.facts { margin-top: clamp(2.5rem, 5vw, 4rem); }

.facts > div {
  display: grid;
  grid-template-columns: 9rem minmax(0, 1fr);
  gap: 1rem;
  padding: 0.85rem 0;
  border-top: 1px solid var(--rule);
}

.facts > div:last-child { border-bottom: 1px solid var(--rule); }

.facts dt {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--mute);
  padding-top: 0.3rem;
}

.facts dd { font-size: 1.12rem; }

/* Experience */

.job {
  display: grid;
  grid-template-columns: 9.5rem minmax(0, 1fr);
  gap: 1rem clamp(1.5rem, 3vw, 3rem);
  padding: clamp(1.75rem, 3vw, 2.75rem) 0;
  border-top: 1px solid var(--rule);
}

.job:first-child { border-top: 0; padding-top: 0.2rem; }

.job-when {
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--mute);
  padding-top: 0.55rem;
  transition: color 0.25s;
}

.job:hover .job-when { color: var(--blue); }

.job h3 {
  font-weight: 400;
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
}

.job-role {
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.55;
  color: var(--ink-2);
  margin: 0.7rem 0 1.4rem;
  max-width: 46em;
}

.job-what li {
  max-width: 62ch;
  margin-bottom: 0.85rem;
  font-size: 1.06rem;
  color: var(--ink-2);
}

/* Innovation */

.ideas {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: clamp(1.5rem, 4vw, 4rem);
}

.idea {
  border-top: 1px solid var(--rule);
  padding: 1.4rem 0 clamp(2rem, 4vw, 3.25rem);
}

.idea:nth-child(-n + 2) { border-top: 0; padding-top: 0.2rem; }

.kind {
  display: block;
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--blue);
}

.idea h3 {
  font-weight: 400;
  font-size: clamp(1.4rem, 2.2vw, 1.9rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0.7rem 0 0.85rem;
}

.idea p { color: var(--ink-2); font-size: 1.04rem; }

/* AI (dark) */

.dark { background: var(--ink); color: var(--on-ink); }
.dark .num { color: var(--blue-lt); }
.dark .display em { color: var(--blue-lt); }

.notes { margin-top: clamp(2.5rem, 5vw, 4.5rem); }

.note {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr) minmax(0, 1.3fr);
  gap: 0.75rem clamp(1.25rem, 3vw, 3rem);
  padding: 1.6rem 0 1.75rem;
  border-top: 1px solid rgba(233, 232, 225, 0.2);
}

.note:last-child { border-bottom: 1px solid rgba(233, 232, 225, 0.2); }

.no {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--on-ink-mute);
  padding-top: 0.55rem;
  transition: color 0.25s;
}

.note h3 {
  font-weight: 400;
  font-size: clamp(1.35rem, 2.1vw, 1.85rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  transition: transform 0.45s var(--ease);
}

.note p { color: var(--on-ink-mute); font-size: 1.02rem; }

.note:hover h3 { transform: translateX(0.5rem); }
.note:hover .no { color: var(--blue-lt); }

.tags {
  margin-top: 0.85rem;
  font-family: var(--mono);
  font-size: 0.72rem !important;
  line-height: 1.7;
}

.tags span,
.stack-row dd span {
  display: inline-block;
  white-space: nowrap;
}

.tags span:not(:last-child)::after {
  content: "/";
  margin: 0 0.6rem;
  color: var(--blue-lt);
}

/* Skills */

.stack-row {
  display: grid;
  grid-template-columns: 13.5rem minmax(0, 1fr);
  gap: 0.6rem clamp(1.5rem, 3vw, 3rem);
  padding: 1.15rem 0;
  border-top: 1px solid var(--rule);
}

.stack-row:first-child { border-top: 0; padding-top: 0.2rem; }

.stack-row dt {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--mute);
  padding-top: 0.4rem;
}

.stack-row dd { font-size: 1.22rem; line-height: 1.5; letter-spacing: -0.01em; }

.stack-row dd span:not(:last-child)::after {
  content: "/";
  margin: 0 0.7rem;
  font-family: var(--mono);
  font-size: 0.85em;
  color: var(--blue);
}

/* Education */

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

.edu-col { padding-right: clamp(1rem, 2.5vw, 2.25rem); }

.edu-col + .edu-col {
  border-left: 1px solid var(--rule);
  padding-left: clamp(1rem, 2.5vw, 2.25rem);
}

.lbl {
  font-family: var(--mono);
  font-weight: 400;
  font-size: 0.78rem;
  color: var(--blue);
  margin-bottom: 1.5rem;
}

.edu-item { margin-bottom: 1.75rem; }

.edu-item h4 {
  font-weight: 500;
  font-size: 1.15rem;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.edu-item p { font-size: 0.98rem; color: var(--ink-2); margin-top: 0.2rem; }

.edu-item .edu-note { font-style: italic; color: var(--mute); }

/* Contact (blue) */

.blue { background: var(--blue); color: var(--paper); padding-bottom: clamp(5rem, 11vw, 10rem); }
.blue .num { color: var(--paper); opacity: 0.7; }

.contact-kicker {
  font-family: var(--mono);
  font-size: 0.82rem;
  max-width: 30em;
  opacity: 0.85;
}

.mail {
  display: inline-block;
  margin-top: clamp(1.25rem, 3vw, 2.25rem);
  font-weight: 300;
  font-size: clamp(1.75rem, 6.2vw, 5.75rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
  overflow-wrap: anywhere;
  background: linear-gradient(currentColor, currentColor) 0 100% / 100% 1px no-repeat;
  padding-bottom: 0.12em;
  transition: background-size 0.5s var(--ease), font-style 0.2s;
}

.mail:hover { background-size: 100% 0.07em; font-style: italic; }

.contact-links {
  margin-top: clamp(2rem, 4vw, 3rem);
  font-family: var(--mono);
  font-size: 0.85rem;
}

.contact-links a {
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
  transition: opacity 0.2s;
}

.contact-links a:hover { opacity: 0.65; }

/* Footer */

.foot {
  background: var(--ink);
  color: var(--on-ink-mute);
  font-family: var(--mono);
  font-size: 0.72rem;
  padding: 1.4rem 0;
}

.foot-inner { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.foot a { transition: color 0.2s; }
.foot a:hover { color: var(--on-ink); }

/* ---------- Responsive ---------- */

@media (max-width: 1020px) {
  .menu-btn { display: block; }

  .nav {
    position: fixed;
    inset: var(--bar) 0 0 0;
    z-index: 190;
    flex-direction: column;
    gap: 0;
    padding: 1.5rem var(--gutter) 3rem;
    background: var(--paper);
    font-size: 0.8rem;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.25s, visibility 0.25s;
    overflow-y: auto;
  }

  .nav.open { visibility: visible; opacity: 1; }

  .nav a {
    font-family: var(--serif);
    font-size: clamp(2rem, 9vw, 3rem);
    font-weight: 300;
    letter-spacing: -0.03em;
    line-height: 1.15;
    padding: 0.55rem 0;
    border-bottom: 1px solid var(--rule);
    color: var(--ink);
  }

  .nav a span { font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0; margin-right: 0.8rem; vertical-align: 0.5em; }
}

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr); align-items: start; }
  .portrait { max-width: 26rem; }
  .figures { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 2rem; }

  .sec-grid { grid-template-columns: minmax(0, 1fr); }
  .sec-label { position: static; }

  .facts > div { grid-template-columns: 6.5rem minmax(0, 1fr); }
  .job { grid-template-columns: minmax(0, 1fr); gap: 0.4rem; }
  .job-when { padding-top: 0; }
  .job-when br { display: none; }
  .job-when { display: flex; gap: 0.9rem; flex-wrap: wrap; }

  .ideas { grid-template-columns: minmax(0, 1fr); }
  .idea:nth-child(2) { border-top: 1px solid var(--rule); padding-top: 1.4rem; }

  .note { grid-template-columns: 2.4rem minmax(0, 1fr); }
  .note > div { grid-column: 2; }

  .stack-row { grid-template-columns: minmax(0, 1fr); }

  .edu { grid-template-columns: minmax(0, 1fr); }
  .edu-col { padding: 0 0 1rem; }
  .edu-col + .edu-col { border-left: 0; border-top: 1px solid var(--rule); padding: 1.5rem 0 1rem; }
}

@media (max-width: 480px) {
  .hero-meta { flex-direction: column; gap: 0.3rem; }
  .figures { grid-template-columns: minmax(0, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .ln > span { animation: none; }
  .js .sec-grid::before { transform: none; transition: none; }
  .portrait img, .note h3 { transition: none; }
}

@media print {
  .bar, .skip { display: none; }
  body { padding-top: 0; }
  .dark, .blue, .foot { background: none; color: var(--ink); }
}