/* Vipan Kumar portfolio. Plain CSS, no build step. */

@font-face { font-family: "Bricolage Grotesque"; src: url("../fonts/BricolageGrotesque-var-latin.woff2") format("woff2"); font-weight: 200 800; font-stretch: 75% 100%; font-display: swap; }
@font-face { font-family: "Instrument Sans"; src: url("../fonts/InstrumentSans-var-latin.woff2") format("woff2"); font-weight: 400 700; font-stretch: 75% 100%; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("../fonts/IBMPlexMono-400-latin.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("../fonts/IBMPlexMono-500-latin.woff2") format("woff2"); font-weight: 500; font-display: swap; }

:root {
  color-scheme: light;
  --bg: #f2f4f0;
  --surface: #fafbf8;
  --ink: #111a17;
  --muted: #47544e;
  --rule: #c6cec8;
  --rule-strong: #111a17;
  --accent: #b5390a;
  --accent-ink: #fff8f3;
  --data: #0f5f50;
  --data-soft: #cfdcd5;
  --grid: rgba(17, 26, 23, .055);

  --display: "Bricolage Grotesque", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --sans: "Instrument Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --gutter: clamp(16px, 4vw, 56px);
  --page: 1320px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0e1312;
    --surface: #151c1a;
    --ink: #e9ede8;
    --muted: #a5b1aa;
    --rule: #2d3734;
    --rule-strong: #e9ede8;
    --accent: #ff9460;
    --accent-ink: #1a0d06;
    --data: #65cfb5;
    --data-soft: #27332f;
    --grid: rgba(233, 237, 232, .05);
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0e1312;
  --surface: #151c1a;
  --ink: #e9ede8;
  --muted: #a5b1aa;
  --rule: #2d3734;
  --rule-strong: #e9ede8;
  --accent: #ff9460;
  --accent-ink: #1a0d06;
  --data: #65cfb5;
  --data-soft: #27332f;
  --grid: rgba(233, 237, 232, .05);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 84px; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 1.0625rem/1.6 var(--sans); overflow-wrap: break-word; }
h1, h2, h3, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration-color: var(--accent); text-decoration-thickness: 1.5px; text-underline-offset: .2em; }
a:hover { color: var(--accent); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
h1, h2, h3 { font-family: var(--display); font-weight: 700; line-height: 1.05; letter-spacing: -.02em; text-wrap: balance; }
p { text-wrap: pretty; }

.wrap { max-width: var(--page); margin-inline: auto; padding-inline: var(--gutter); }
.skip { position: absolute; left: var(--gutter); top: -60px; z-index: 30; background: var(--accent); color: var(--accent-ink); padding: .5rem .9rem; font: 500 .875rem var(--mono); }
.skip:focus { top: 8px; color: var(--accent-ink); }
.label { font: 500 .75rem/1.4 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }

/* Header */
.site-head { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 90%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--rule); }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 60px; }
.brand { font: 700 1.125rem/1 var(--display); letter-spacing: -.01em; text-decoration: none; white-space: nowrap; }
.site-nav { display: flex; align-items: center; gap: clamp(.65rem, 2vw, 1.75rem); font: 500 .8125rem var(--mono); }
.site-nav a { text-decoration: none; padding: .5rem 0; }
.site-nav a:hover { text-decoration: underline; }
.theme-btn { display: none; font: 500 .8125rem var(--mono); color: inherit; background: none; border: 1px solid var(--rule); border-radius: 2px; padding: .4rem .6rem; cursor: pointer; min-height: 34px; white-space: nowrap; }
.theme-btn:hover { border-color: var(--accent); color: var(--accent); }
.js .theme-btn { display: inline-block; }
.progress { display: none; }

/* Buttons */
.actions { display: flex; flex-wrap: wrap; gap: .625rem; }
.btn { display: inline-flex; align-items: center; min-height: 46px; padding: .625rem 1.05rem; font: 500 .875rem/1.3 var(--mono); text-decoration: none; border: 1px solid var(--rule-strong); border-radius: 2px; transition: background .18s, color .18s, border-color .18s; }
.btn:hover { background: var(--ink); color: var(--bg); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { background: var(--ink); border-color: var(--ink); color: var(--bg); }

/* Hero */
.hero { position: relative; padding-block: 1rem clamp(2.5rem, 6vw, 5rem); background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px); background-size: 56px 56px; border-bottom: 1px solid var(--rule-strong); }
.hero-top { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(1.5rem, 4vw, 3.5rem); align-items: start; }
.hero h1 { font-size: clamp(5rem, 18.5vw, 14rem); line-height: .86; letter-spacing: -.012em; font-weight: 800; font-stretch: 86%; }
.hero h1 span { display: block; }
.hero h1 span + span { color: var(--accent); }
.spec { border-top: 2px solid var(--rule-strong); background: var(--surface); }
.spec > div { padding: .7rem .85rem; border-bottom: 1px solid var(--rule); border-inline: 1px solid var(--rule); }
.spec dt { margin-bottom: .1rem; }
.spec dd { font-size: .96875rem; line-height: 1.4; font-weight: 500; }
.hero-bottom { display: grid; grid-template-columns: minmax(0, 1fr); gap: clamp(1.5rem, 4vw, 3.5rem); margin-top: clamp(1.75rem, 3.5vw, 3rem); align-items: start; }
.statement { font: 600 clamp(1.625rem, 3.2vw, 2.75rem)/1.1 var(--display); letter-spacing: -.02em; text-wrap: balance; }
.hero-sub { color: var(--muted); max-width: 62ch; }
.hero-side .actions { margin-top: 1.25rem; }

/* Sections */
.section { padding-block: clamp(3rem, 7vw, 6rem); border-bottom: 1px solid var(--rule); }
.section-head { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 1rem clamp(1.5rem, 4vw, 3.5rem); margin-bottom: clamp(1.75rem, 4vw, 3.25rem); align-items: end; }
.section-head h2 { font-size: clamp(2.25rem, 5vw, 4.25rem); }
.section-head p { color: var(--muted); max-width: 62ch; }
.section-head:not(:has(p)) { grid-template-columns: minmax(0, 1fr); }

/* Impact ledger */
.ledger { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: clamp(1.5rem, 4vw, 3.5rem); border-top: 2px solid var(--rule-strong); }
.ledger li { display: grid; grid-template-columns: minmax(0, 9.5rem) minmax(0, 1fr); gap: .25rem 1.25rem; padding-block: 1.1rem; border-bottom: 1px solid var(--rule); align-items: baseline; }
.ledger strong { font: 700 clamp(1.75rem, 3vw, 2.5rem)/1 var(--display); font-stretch: 80%; letter-spacing: -.025em; white-space: nowrap; }
.ledger p { font-size: 1rem; line-height: 1.45; }
.ledger .src { display: block; margin-top: .25rem; font: 500 .75rem var(--mono); color: var(--muted); }

/* Two readings */
.paths { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(1.5rem, 4vw, 3.5rem); }
.path { border-top: 2px solid var(--rule-strong); padding-top: 1rem; display: flex; flex-direction: column; gap: 1rem; }
.path h3 { font-size: clamp(1.5rem, 2.6vw, 2.125rem); }
.path .targets { font: 400 .8125rem/1.5 var(--mono); color: var(--muted); }
.path ul { display: grid; gap: .55rem; flex: 1; }
.path li { padding-left: 1.1rem; position: relative; }
.path li::before { content: ""; position: absolute; left: 0; top: .68em; width: .5rem; height: 2px; background: var(--accent); }

/* Work list */
.work-group { margin-bottom: 2.75rem; }
.work-group:last-child { margin-bottom: 0; }
.work-group > .label { display: block; padding-bottom: .55rem; border-bottom: 2px solid var(--rule-strong); }
.work-row { position: relative; display: grid; grid-template-columns: minmax(0, 13rem) minmax(0, 1fr) minmax(0, 15rem); gap: .5rem clamp(1rem, 3vw, 2.5rem); padding-block: 1.5rem; border-bottom: 1px solid var(--rule); transition: background .18s; }
.work-row:hover { background: var(--surface); }
.work-metric { font: 700 clamp(1.875rem, 3.4vw, 3rem)/1 var(--display); font-stretch: 80%; letter-spacing: -.03em; color: var(--data); }
.work-metric small { display: block; margin-top: .4rem; font: 500 .75rem/1.4 var(--mono); letter-spacing: 0; color: var(--muted); }
.work-row h3 { font-size: clamp(1.375rem, 2.3vw, 1.875rem); line-height: 1.12; margin-bottom: .45rem; }
.work-row h3 a { text-decoration: none; }
.work-row h3 a::after { content: ""; position: absolute; inset: 0; }
.work-row:hover h3 a { color: var(--accent); }
.work-row p { color: var(--muted); max-width: 60ch; }
.work-meta { font: 400 .8125rem/1.5 var(--mono); color: var(--muted); }
.work-meta b { display: block; font-weight: 500; color: var(--ink); }

/* Career timeline, drawn to scale */
.axis, .role { display: grid; grid-template-columns: minmax(0, 11rem) minmax(0, 1fr); gap: 0 clamp(1rem, 3vw, 2.5rem); }
.axis { padding-bottom: .4rem; border-bottom: 2px solid var(--rule-strong); }
.axis-track { position: relative; height: 1.25rem; font: 500 .75rem var(--mono); color: var(--muted); }
.axis-track span { position: absolute; top: 0; }
.axis-track span:not(:first-child) { transform: translateX(-50%); }
.role { padding-block: 1.25rem; border-bottom: 1px solid var(--rule); }
.role-when { font: 500 .8125rem/1.5 var(--mono); color: var(--muted); }
.track { position: relative; height: 8px; margin: .4rem 0 .95rem; background: repeating-linear-gradient(90deg, var(--rule) 0 1px, transparent 1px calc(100% / 16)); border-bottom: 1px solid var(--rule); }
.track i { position: absolute; top: 0; bottom: 0; left: var(--s); width: max(var(--w), 3px); background: var(--data); border-radius: 0 4px 4px 0; transform-origin: left; }
.role h3 { font-size: clamp(1.25rem, 2.1vw, 1.625rem); line-height: 1.15; }
.role .org { font-weight: 600; margin-top: .2rem; }
.role .ctx { color: var(--muted); font-size: .96875rem; margin-top: .15rem; max-width: 74ch; }
.role ul { margin-top: .6rem; display: grid; gap: .35rem; max-width: 80ch; }
.role li { padding-left: 1.1rem; position: relative; font-size: 1rem; line-height: 1.5; }
.role li::before { content: ""; position: absolute; left: 0; top: .68em; width: .5rem; height: 2px; background: var(--rule-strong); }
.role .more { display: inline-block; margin-top: .6rem; font: 500 .8125rem var(--mono); padding-block: .3rem; }

/* Skills */
.skills { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2rem clamp(1.5rem, 3vw, 2.75rem); }
.skills h3 { font: 500 .75rem/1.4 var(--mono); letter-spacing: .06em; text-transform: uppercase; padding-bottom: .5rem; margin-bottom: .75rem; border-bottom: 2px solid var(--rule-strong); }
.tags { display: flex; flex-wrap: wrap; gap: .65rem .6rem; }
.tags li { font: 400 .8125rem/1.3 var(--mono); padding: .4rem .75rem; border: 1px solid var(--rule); background: var(--surface); border-radius: 999px; }

/* Education and references */
.two { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2.5rem clamp(1.5rem, 4vw, 3.5rem); }
.entry { padding-block: .95rem; border-bottom: 1px solid var(--rule); }
.entry:first-of-type { border-top: 2px solid var(--rule-strong); }
.entry h3 { font-size: 1.25rem; line-height: 1.2; }
.entry p { color: var(--muted); font-size: 1rem; margin-top: .2rem; }
.sub-h { font-size: clamp(1.5rem, 2.6vw, 2.125rem); margin-bottom: 1rem; }
.refs { border-top: 2px solid var(--rule-strong); }
.refs li { display: grid; grid-template-columns: minmax(0, 11rem) minmax(0, 1fr); gap: .15rem 1.25rem; padding-block: .75rem; border-bottom: 1px solid var(--rule); font-size: 1rem; line-height: 1.5; }
.refs b { font-weight: 600; }
blockquote.rec { margin: 0; padding-left: 1.1rem; border-left: 3px solid var(--accent); font: 500 clamp(1.25rem, 2.2vw, 1.75rem)/1.25 var(--display); letter-spacing: -.01em; }
.rec-src { margin-top: .6rem; }

/* Contact */
.contact { background: var(--ink); color: var(--bg); padding-block: clamp(3rem, 7vw, 6rem); }
.contact a:hover { color: inherit; }
.contact h2 { font-size: clamp(2.5rem, 7vw, 6rem); line-height: .98; letter-spacing: -.015em; max-width: 14ch; }
.contact-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 2rem clamp(1.5rem, 4vw, 3.5rem); align-items: end; }
.contact .label { color: inherit; opacity: .78; }
.contact dd { font-size: 1.0625rem; font-weight: 500; }
.contact dl > div { padding-block: .7rem; border-bottom: 1px solid color-mix(in srgb, var(--bg) 28%, transparent); }
.contact .actions { margin-top: 1.25rem; }
.contact .btn { border-color: var(--bg); }
.contact .btn:hover { background: var(--bg); color: var(--ink); }
.site-foot { padding-block: 1.25rem; font: 400 .8125rem/1.5 var(--mono); color: var(--muted); }
.site-foot .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .5rem 2rem; }

/* Case studies */
.crumb { display: inline-block; margin-bottom: 1.25rem; font: 500 .8125rem var(--mono); padding-block: .3rem; }
.case-head { padding-block: clamp(1.75rem, 4vw, 3.25rem) clamp(2rem, 4vw, 3rem); border-bottom: 1px solid var(--rule-strong); background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px); background-size: 56px 56px; }
.case-head h1 { font-size: clamp(2.375rem, 6vw, 5.25rem); line-height: 1; letter-spacing: -.015em; max-width: 20ch; font-stretch: 88%; }
.dek { margin-top: 1.25rem; font-size: clamp(1.125rem, 1.7vw, 1.375rem); line-height: 1.4; max-width: 62ch; }
.case-meta { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem clamp(1rem, 2.5vw, 2rem); margin-top: clamp(1.5rem, 3vw, 2.5rem); padding-top: 1rem; border-top: 2px solid var(--rule-strong); }
.case-meta dd { font-size: .96875rem; line-height: 1.4; margin-top: .15rem; }
.metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 13.5rem), 1fr)); border-bottom: 1px solid var(--rule); }
.metrics li { padding: 1.25rem 1rem 1.25rem 0; border-top: 1px solid var(--rule); }
.metrics strong { display: block; font: 700 clamp(2rem, 4vw, 3.25rem)/1 var(--display); font-stretch: 80%; letter-spacing: -.03em; color: var(--data); margin-bottom: .4rem; }
.metrics span { display: block; font-size: .96875rem; line-height: 1.4; max-width: 32ch; }
.case-sec { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 9fr); gap: .75rem clamp(1.5rem, 4vw, 3.5rem); padding-block: clamp(1.75rem, 3.5vw, 2.75rem); border-bottom: 1px solid var(--rule); }
.case-sec > h2 { font-size: clamp(1.5rem, 2.6vw, 2.125rem); position: sticky; top: 80px; align-self: start; }
.prose { max-width: 70ch; display: grid; gap: .9rem; }
.prose h3 { font-size: 1.25rem; line-height: 1.2; margin-top: .6rem; letter-spacing: -.01em; }
.prose ul { display: grid; gap: .5rem; }
.prose li { padding-left: 1.1rem; position: relative; }
.prose li::before { content: ""; position: absolute; left: 0; top: .72em; width: .5rem; height: 2px; background: var(--accent); }
.flag { font: 500 .6875rem/1 var(--mono); letter-spacing: .05em; text-transform: uppercase; border: 1px solid var(--rule-strong); padding: .15rem .35rem; border-radius: 2px; white-space: nowrap; }
.model-table { display: grid; gap: 0; border-top: 1px solid var(--rule); }
.model-table div { display: grid; grid-template-columns: minmax(0, 10rem) minmax(0, 1fr); gap: 0 1rem; padding-block: .4rem; border-bottom: 1px solid var(--rule); font-size: .96875rem; }
.model-table dt { font: 500 .8125rem/1.6 var(--mono); color: var(--muted); }

/* Figures: drawn from source facts, no decoration */
.figs { display: grid; gap: 1.75rem; }
.fig { background: var(--surface); border: 1px solid var(--rule); padding: clamp(1rem, 2vw, 1.5rem); max-width: 860px; }
.fig figcaption { font: 400 .8125rem/1.5 var(--mono); color: var(--muted); margin-top: .9rem; }
.flow { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); gap: 1.5rem; counter-reset: s; }
.flow li { position: relative; padding: .7rem .75rem; border: 1px solid var(--rule-strong); border-radius: 2px; background: var(--bg); }
.flow li b { display: block; font: 600 .96875rem/1.25 var(--sans); }
.flow li span { display: block; margin-top: .25rem; font: 400 .75rem/1.4 var(--mono); color: var(--muted); }
.flow li:not(:last-child)::after { content: ""; position: absolute; top: 50%; right: calc(-1.5rem - 1px); width: 1.5rem; height: 2px; background: linear-gradient(90deg, var(--accent), var(--accent)) left center / calc(100% - 7px) 2px no-repeat; }
.flow li:not(:last-child)::before { content: ""; position: absolute; top: calc(50% - 4px); right: calc(-1.5rem - 1px); border-left: 8px solid var(--accent); border-block: 5px solid transparent; }
.scale { display: grid; gap: .8rem; }
.scale > div { display: grid; grid-template-columns: minmax(0, 11rem) minmax(0, 1fr); gap: .75rem; align-items: center; }
.scale dt { font-size: .9375rem; line-height: 1.3; }
.scale dd { display: flex; align-items: center; gap: .55rem; font: 500 .8125rem var(--mono); min-width: 0; }
.scale .b { display: block; flex: none; width: calc(var(--v) * .78); min-width: 4px; height: 14px; background: var(--data); border-radius: 0 4px 4px 0; }
.scale .b.ref { background: var(--data-soft); box-shadow: inset 0 0 0 1px var(--muted); }
.units { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 4px; max-width: 460px; }
.units i { aspect-ratio: 1; border-radius: 2px; border: 1px solid var(--muted); }
.units i.on { background: var(--data); border-color: var(--data); }
.unit-row { display: grid; gap: .35rem; }
.unit-row + .unit-row { margin-top: .9rem; }
.unit-row b { font: 500 .8125rem var(--mono); }
.split { display: flex; gap: 2px; height: 34px; }
.split i { display: flex; align-items: center; padding-inline: .5rem; font: 500 .75rem/1 var(--mono); font-style: normal; white-space: nowrap; overflow: hidden; }
.split .a { flex: 200; background: var(--data-soft); color: var(--ink); border-radius: 2px 0 0 2px; }
.split .c { flex: 500; background: var(--data); color: var(--bg); border-radius: 0 4px 4px 0; }
.schem { width: 100%; max-width: 520px; height: auto; color: var(--ink); }

.case-nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; padding-block: 1.75rem; }
.case-nav a { display: block; padding: .9rem 1rem; border: 1px solid var(--rule); text-decoration: none; background: var(--surface); }
.case-nav a:hover { border-color: var(--accent); }
.case-nav a b { display: block; font: 700 1.25rem/1.2 var(--display); margin-top: .1rem; }
.case-nav a.next { text-align: right; }
.case-cta { background: var(--ink); color: var(--bg); padding-block: clamp(2rem, 4vw, 3rem); }
.case-cta .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.25rem; }
.case-cta p { font: 600 clamp(1.375rem, 2.4vw, 1.875rem)/1.15 var(--display); max-width: 26ch; letter-spacing: -.015em; }
.case-cta a:hover { color: inherit; }
.case-cta .btn { border-color: var(--bg); }
.case-cta .btn:hover { background: var(--bg); color: var(--ink); }

/* Audience modes. Without JS these panels simply stack and the tabs are jump links. */
.modes { padding-block-end: clamp(2.5rem, 5vw, 4.5rem); }
.mode-tabs ul { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2px; border-bottom: 2px solid var(--rule-strong); }
.mode-tabs a { display: flex; align-items: center; height: 100%; min-height: 56px; padding: .75rem 1rem; font: 600 clamp(1rem, 1.5vw, 1.1875rem)/1.2 var(--display); text-decoration: none; background: var(--surface); border: 1px solid var(--rule); border-bottom: 0; transition: background .18s, color .18s; }
.mode-tabs a:hover { color: var(--accent); }
.mode-tabs a[aria-selected="true"], .mode-tabs a[aria-selected="true"]:hover { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.mode-tabs a:focus-visible { outline-offset: -5px; outline-color: var(--accent); }
.mode-panel { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 2rem clamp(1.5rem, 4vw, 3.5rem); padding-block: clamp(1.5rem, 3vw, 2.5rem); border-bottom: 1px solid var(--rule); scroll-margin-top: 84px; }
.mode-panel[hidden] { display: none; }
.mode-panel:last-of-type { border-bottom: 0; padding-bottom: 0; }
.mode-main h3 { font-size: clamp(1.75rem, 3.4vw, 3rem); margin-top: .35rem; }
.mode-proofs { display: grid; gap: .7rem; margin-block: 1.25rem 1.5rem; }
.mode-proofs li { padding-left: 1.1rem; position: relative; max-width: 66ch; }
.mode-proofs li::before { content: ""; position: absolute; left: 0; top: .72em; width: .5rem; height: 2px; background: var(--accent); }
.mode-main .actions { align-items: center; }
.cv-alt { font: 500 .8125rem var(--mono); padding: .75rem .35rem; }
.mode-cases ol { margin-top: .5rem; border-top: 2px solid var(--rule-strong); }
.mode-cases li { padding-block: .6rem; border-bottom: 1px solid var(--rule); }
.mode-cases a { display: inline-block; font: 600 1.0625rem/1.25 var(--display); padding-block: .1rem; }
.mode-cases span { display: block; font-size: .9375rem; line-height: 1.4; color: var(--muted); }
@media (max-width: 1000px) {
  .mode-panel { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 720px) {
  .mode-tabs ul { grid-template-columns: minmax(0, 1fr); border-bottom: 0; }
  .mode-tabs a { min-height: 50px; border-bottom: 1px solid var(--rule); }
  .js .mode-panel { scroll-margin-top: 170px; }
  .cv-alt { flex: 1 1 100%; text-align: center; }
}
@media (prefers-reduced-motion: no-preference) {
  .js .mode-panel { animation: mode-in .35s var(--ease); }
  @keyframes mode-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
}

/* Motion: only when the visitor allows it, and only once JS has confirmed it can reveal */
@media (prefers-reduced-motion: no-preference) {
  @view-transition { navigation: auto; }
  .js .reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
  .js .reveal.in { opacity: 1; transform: none; }
  .js .track i { transform: scaleX(0); transition: transform .9s var(--ease); }
  .js .in .track i, .js .track.in i { transform: none; }
  .btn:hover { transform: translateY(-1px); }
  .work-row h3 a { transition: color .18s; }
  @supports (animation-timeline: scroll()) {
    .progress { display: block; position: fixed; inset: 0 0 auto; height: 3px; z-index: 25; background: var(--accent); transform-origin: left; animation: grow linear both; animation-timeline: scroll(root); }
    @keyframes grow { from { transform: scaleX(0); } to { transform: scaleX(1); } }
  }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
}

/* Responsive */
@media (max-width: 1000px) {
  .hero-top, .hero-bottom, .contact-grid { grid-template-columns: minmax(0, 1fr); }
  .section-head { grid-template-columns: minmax(0, 1fr); }
  .work-row { grid-template-columns: minmax(0, 10rem) minmax(0, 1fr); }
  .work-meta { grid-column: 2; }
  .skills { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .case-meta { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ledger { grid-template-columns: minmax(0, 1fr); }
  .ledger li:first-child { border-top: 0; }
}
@media (max-width: 720px) {
  body { font-size: 1rem; }
  .paths, .two, .skills { grid-template-columns: minmax(0, 1fr); }
  .work-row { grid-template-columns: minmax(0, 1fr); }
  .work-meta { grid-column: auto; }
  .axis, .role { grid-template-columns: minmax(0, 1fr); }
  .axis > .label { display: none; }
  .ledger li { grid-template-columns: minmax(0, 1fr); }
  .refs li { grid-template-columns: minmax(0, 1fr); }
  .case-sec { grid-template-columns: minmax(0, 1fr); }
  .case-sec > h2 { position: static; }
  .flow { grid-auto-flow: row; gap: 1.25rem; }
  .flow li:not(:last-child)::after { top: auto; bottom: calc(-1.25rem - 1px); right: auto; left: 1.25rem; width: 2px; height: 1.25rem; background: linear-gradient(var(--accent), var(--accent)) center top / 2px calc(100% - 7px) no-repeat; }
  .flow li:not(:last-child)::before { top: auto; bottom: calc(-1.25rem - 1px); right: auto; left: calc(1.25rem - 4px); border-top: 8px solid var(--accent); border-left: 5px solid transparent; border-right: 5px solid transparent; border-bottom: 0; }
  .scale > div { grid-template-columns: minmax(0, 1fr); gap: .25rem; }
  .model-table div { grid-template-columns: minmax(0, 1fr); }
  .case-nav a b { font-size: 1.0625rem; }
  .site-nav .opt { display: none; }
  .btn { flex: 1 1 100%; justify-content: center; }
}

/* Print: a recruiter may print this. Everything visible, no chrome. */
@media print {
  .site-head, .theme-btn, .progress, .skip, .case-nav { display: none !important; }
  .reveal, .track i { opacity: 1 !important; transform: none !important; }
  .mode-tabs { display: none; }
  .mode-panel[hidden] { display: grid !important; }
  .contact, .case-cta { background: none; color: #000; }
  .hero, .case-head { background-image: none; }
}

/* Industries */
.industries { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--rule); border-left: 1px solid var(--rule); }
.industries li { border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.industries a { display: block; height: 100%; padding: 1.25rem 1.25rem 1.5rem; color: inherit; text-decoration: none; transition: background-color .2s var(--ease); }
.industries a:hover { background: var(--surface); }
.industries a:hover h3 { color: var(--accent); }
.industries h3 { font-size: 1.15rem; line-height: 1.25; margin: 0 0 .35rem; }
.industries .ind-co { font: 500 .75rem/1.4 var(--mono); letter-spacing: .04em; text-transform: uppercase; color: var(--data); margin: 0 0 .6rem; }
.industries p { color: var(--muted); font-size: .95rem; margin: 0; }
@media (max-width: 900px) { .industries { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .industries { grid-template-columns: minmax(0, 1fr); } }

.logo-tile { display: block; margin-bottom: .6rem; }
.logo-tile img { display: block; height: 44px; width: auto; max-width: 100%; }
/* Logos are transparent PNGs with dark artwork; render them white on dark themes. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .logo-tile img { filter: brightness(0) invert(1); }
}
:root[data-theme="dark"] .logo-tile img { filter: brightness(0) invert(1); }

/* ===== Glass (base) ===== */
/* Preview: Glassmorphism */
:root{--bg:#e8edfb;--surface:rgba(255,255,255,.5);--ink:#0f1a2b;--muted:#43506a;--rule:rgba(15,26,43,.14);--rule-strong:#0f1a2b;--accent:#3b54e0;--accent-ink:#fff;--data:#0b6b8a;--data-soft:rgba(255,255,255,.5);--grid:transparent;
 --glass:rgba(255,255,255,.45);--glass-b:rgba(255,255,255,.7);--glass-sh:0 8px 32px rgba(40,60,140,.14)}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){--bg:#0a0d1a;--surface:rgba(255,255,255,.06);--ink:#eef1fb;--muted:#a9b3d0;--rule:rgba(255,255,255,.14);--rule-strong:#eef1fb;--accent:#8aa2ff;--accent-ink:#0a0d1a;--data:#6fd6f0;--data-soft:rgba(255,255,255,.06);--glass:rgba(255,255,255,.07);--glass-b:rgba(255,255,255,.16);--glass-sh:0 8px 32px rgba(0,0,0,.4)}}
:root[data-theme="dark"]{--bg:#0a0d1a;--surface:rgba(255,255,255,.06);--ink:#eef1fb;--muted:#a9b3d0;--rule:rgba(255,255,255,.14);--rule-strong:#eef1fb;--accent:#8aa2ff;--accent-ink:#0a0d1a;--data:#6fd6f0;--data-soft:rgba(255,255,255,.06);--glass:rgba(255,255,255,.07);--glass-b:rgba(255,255,255,.16);--glass-sh:0 8px 32px rgba(0,0,0,.4)}
body{background:radial-gradient(60vw 50vh at 10% 0%,rgba(110,130,255,.45),transparent 60%),radial-gradient(50vw 50vh at 95% 15%,rgba(255,140,200,.35),transparent 60%),radial-gradient(60vw 60vh at 50% 100%,rgba(80,220,230,.3),transparent 60%),var(--bg);background-attachment:fixed}
.hero{background-image:none;border-bottom:0}
.site-head{background:var(--glass);backdrop-filter:blur(18px) saturate(160%);-webkit-backdrop-filter:blur(18px) saturate(160%);border-bottom:1px solid var(--glass-b)}
.spec,.work-row,.industries li,.entry,.path,.mode-panel,.metrics li,.skills>div,.rec,.btn{background:var(--glass);backdrop-filter:blur(16px) saturate(150%);-webkit-backdrop-filter:blur(16px) saturate(150%);border:1px solid var(--glass-b);box-shadow:var(--glass-sh);border-radius:18px}
.spec{border-top:1px solid var(--glass-b);overflow:hidden;padding:.4rem}
.spec>div{border:0;border-bottom:1px solid var(--rule)}
.spec>div:last-child{border-bottom:0}
.work-group>.label{border-bottom:0}
.work-group{display:grid;gap:1rem}
.work-row{padding:1.5rem;transition:transform .25s var(--ease),box-shadow .25s}
.work-row:hover{background:var(--glass);transform:translateY(-3px)}
.industries{border:0;gap:1rem}
.industries li{border:1px solid var(--glass-b);overflow:hidden}
.entry,.entry:first-of-type{padding:1.25rem;border:1px solid var(--glass-b);border-top:1px solid var(--glass-b);margin-bottom:1rem}
.path{padding:1.5rem;border-top:1px solid var(--glass-b)}
.btn:hover{background:var(--glass-b);color:var(--ink)}
.btn.primary{background:var(--accent);border-color:transparent;color:var(--accent-ink)}
.btn.primary:hover{background:var(--accent);filter:brightness(1.1);color:var(--accent-ink)}
.logo-tile img{border-radius:6px}

/* ===== Glass: Aurora (always dark) ===== */
/* Glass variant A: Aurora (always dark, vivid gradient) */
:root,:root[data-theme="light"],:root[data-theme="dark"]{color-scheme:dark;--bg:#070a16;--surface:rgba(255,255,255,.06);--ink:#f0f3ff;--muted:#aab4d6;--rule:rgba(255,255,255,.14);--rule-strong:#f0f3ff;--accent:#9db0ff;--accent-ink:#070a16;--data:#7ae3f5;--glass:rgba(255,255,255,.06);--glass-b:rgba(255,255,255,.16);--glass-sh:0 10px 40px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.12)}
body{background:radial-gradient(55vw 55vh at 8% 5%,rgba(99,102,241,.55),transparent 60%),radial-gradient(45vw 45vh at 92% 10%,rgba(236,72,153,.4),transparent 60%),radial-gradient(60vw 55vh at 70% 95%,rgba(20,184,166,.4),transparent 60%),#070a16;background-attachment:fixed}
.hero h1 span+span{background:linear-gradient(90deg,#9db0ff,#f0abfc,#7ae3f5);-webkit-background-clip:text;background-clip:text;color:transparent}
.work-metric,.metrics strong{background:linear-gradient(90deg,#7ae3f5,#9db0ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.theme-btn{display:none}
.logo-tile img{filter:brightness(0) invert(1)!important}

/* Brand logo */
.brand { display: inline-flex; align-items: center; gap: .6rem; }
.brand-mark { display: block; width: 34px; height: 34px; border-radius: 10px; box-shadow: 0 0 18px rgba(157,176,255,.35); }

/* Metric tiles: padding and spacing inside and between the glass cards */
.metrics { gap: 1rem; border-bottom: 0; padding-block: 1rem; }
.metrics li { padding: 1.4rem 1.5rem; }
.hero-cta { margin-top: .5rem; margin-bottom: 1.75rem; }
.hero-right .hero-sub { margin-bottom: 1rem; }
.modes .section-head { grid-template-columns: minmax(0, 1fr); gap: .75rem; }
.modes .section-head p { max-width: none; }
/* Hero restructure */
.hero-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 4fr); gap: clamp(1.5rem, 4vw, 3.5rem); align-items: start; }
.hero-main { display: flex; flex-direction: column; gap: 1.25rem; min-width: 0; }
.hero .hero-main h1 { font-size: clamp(3.5rem, 11vw, 8rem); line-height: .9; }
.hero .hero-main h1 span { display: inline; }
.hero .hero-main h1 span + span { margin-left: .2em; }
.hero-main .statement { font-size: clamp(1.375rem, 2.4vw, 2rem); line-height: 1.25; max-width: 34ch; }
.hero-main .hero-sub { font-size: 1.0625rem; line-height: 1.6; max-width: 58ch; }
.hero-main .hero-cta { margin: .25rem 0 0; }
.hero-grid > .spec { margin-top: .5rem; }
@media (max-width: 1000px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr); }
  .hero-grid > .spec { margin-top: 0; }
}
@media (max-width: 480px) {
  .hero .hero-main h1 { font-size: 14vw; white-space: nowrap; }
  .hero-main .hero-cta .btn { width: 100%; text-align: center; }
}
.hero-aside { margin-top: .5rem; min-width: 0; }
.hero-aside .spec { margin: 0; }
.hero-aside .hero-cta { margin: 1.25rem 0 0; }
@media (max-width: 1000px) { .hero-aside { margin-top: 0; } }
@media (max-width: 480px) { .hero-aside .hero-cta .btn { width: 100%; text-align: center; } }

/* ===== Modes restructure ===== */
.mode-tabs { margin-bottom: 1.25rem; }
.mode-tabs ul { gap: .6rem; border-bottom: 0; }
.mode-tabs a { border-radius: 14px; min-height: 60px; border: 1px solid var(--glass-b, var(--rule)); transition: background .2s, color .2s, transform .2s; }
.mode-tabs a:hover { transform: translateY(-1px); }
.mode-panel { padding: clamp(1.25rem, 3vw, 2.5rem); gap: clamp(1.5rem, 3vw, 2.5rem); align-items: start; }
.mode-panel:last-of-type { padding-bottom: clamp(1.25rem, 3vw, 2.5rem); }
.mode-main .label { color: var(--accent); }
.mode-main h3 { font-size: clamp(1.5rem, 2.8vw, 2.375rem); line-height: 1.12; max-width: 24ch; }
.mode-proofs { gap: .9rem; margin-block: 1.25rem 1.75rem; }
.mode-proofs li { line-height: 1.55; padding-left: 1.35rem; }
.mode-proofs li::before { top: .8em; width: .6rem; }
.mode-main .actions { display: flex; flex-wrap: wrap; gap: .6rem; padding-top: 1.25rem; border-top: 1px solid var(--rule); }
.mode-cases { padding: 1.25rem 1.25rem 1rem; border: 1px solid var(--glass-b, var(--rule)); border-radius: 16px; background: var(--surface); }
.mode-cases .label { margin-bottom: .25rem; }
.mode-cases ol { counter-reset: case; border-top: 0; margin-top: .25rem; }
.mode-cases li { counter-increment: case; position: relative; padding: .8rem 0 .8rem 2rem; }
.mode-cases li:last-child { border-bottom: 0; }
.mode-cases li::before { content: counter(case); position: absolute; left: 0; top: .85rem; font: 500 .8125rem var(--mono); color: var(--accent); }
@media (min-width: 1001px) { .mode-cases { position: sticky; top: 92px; } }
@media (max-width: 1000px) { .mode-panel { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 720px) {
  .mode-tabs ul { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .4rem; }
  .mode-tabs a { min-height: 56px; padding: .5rem .4rem; justify-content: center; text-align: center; font-size: .9375rem; line-height: 1.15; }
  .mode-main .actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .5rem; }
  .mode-main .actions .btn.primary { grid-column: 1 / -1; }
  .mode-main .actions .btn, .mode-main .actions .cv-alt { width: 100%; min-width: 0; text-align: center; justify-content: center; font-size: .8125rem; padding: .7rem .4rem; line-height: 1.2; }
  .mode-main .actions .cv-alt { border: 1px solid var(--glass-b, var(--rule)); border-radius: 18px; background: var(--glass, transparent); }
}

.t-short { display: none; }
@media (max-width: 720px) { .t-full { display: none; } .t-short { display: inline; } }
.paths-sec .section-head { grid-template-columns: minmax(0, 1fr); gap: .75rem; }
.paths-sec .section-head p { max-width: none; }
.section-head--center { text-align: center; justify-items: center; }

/* Paths as tabs */
.paths-sec .mode-tabs ul, .paths-sec .mode-tabs ul { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.mode-cases .role { font: 600 1.0625rem/1.25 var(--display); color: var(--ink); }
@media (max-width: 720px) { .paths-sec .mode-tabs ul { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.logo-tile img[src*="thapar"] { height: 76px; }
.skills .reveal h3 { text-align: center; }