/* ============================================================
   WI-PF1 — Waseem Ilyas portfolio
   Personal operating console meets portfolio essay.
   Two surfaces: warm-graphite console + near-white paper essay.
   Self-hosted Geist + Geist Mono. No framework. ~one file.
   ============================================================ */

/* ---------- self-hosted fonts (no CDN dependency) ---------- */
@font-face {
  font-family: "Geist";
  src: url("/assets/fonts/Geist-Variable.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
  font-style: normal;
}
@font-face {
  font-family: "Geist Mono";
  src: url("/assets/fonts/GeistMono-Variable.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
  font-style: normal;
}

:root {
  /* Console (warm graphite — not black, not beige) */
  --graphite-900: oklch(0.17 0.008 65);
  --graphite-800: oklch(0.21 0.009 65);
  --graphite-700: oklch(0.27 0.010 65);
  --bone: oklch(0.93 0.006 75);
  --bone-mute: oklch(0.70 0.008 70);
  --line-dark: oklch(1 0 0 / 0.12);
  /* Essay (paper — true near-white, not cream) */
  --paper: oklch(0.985 0.002 70);
  --paper-sink: oklch(0.955 0.003 70);
  --ink: oklch(0.22 0.010 60);
  --ink-mute: oklch(0.46 0.010 60);
  --line-light: oklch(0.22 0.01 60 / 0.14);
  /* Signal */
  --signal: oklch(0.66 0.185 42);
  --signal-deep: oklch(0.56 0.170 40);
  --trace: oklch(0.80 0.130 78);

  --sans: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --step--1: clamp(0.78rem, 0.75rem + 0.15vw, 0.86rem);
  --step-0: clamp(0.98rem, 0.93rem + 0.25vw, 1.08rem);
  --step-1: clamp(1.18rem, 1.05rem + 0.6vw, 1.45rem);
  --step-2: clamp(1.5rem, 1.25rem + 1.1vw, 2.1rem);
  --step-3: clamp(2.1rem, 1.6rem + 2.4vw, 3.4rem);
  --step-4: clamp(2.7rem, 1.9rem + 4vw, 5.4rem);

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --maxw: 78rem;
}

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--sans);
  font-size: var(--step-0);
  line-height: 1.55;
  color: var(--bone);
  background: var(--graphite-900);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
}
img, svg { max-width: 100%; }
a { color: inherit; }
h1, h2, h3 { font-weight: 700; line-height: 1.04; letter-spacing: -0.03em; text-wrap: balance; }
.mono { font-family: var(--mono); font-weight: 500; letter-spacing: 0.02em; }
.label { font-family: var(--mono); font-size: var(--step--1); letter-spacing: 0.08em; text-transform: uppercase; color: var(--bone-mute); }
.shell { max-width: var(--maxw); margin-inline: auto; padding-inline: clamp(1.1rem, 4vw, 3rem); }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; border-radius: 2px; }

/* skip link */
.skip { position: absolute; left: -999px; top: 0; z-index: 100; background: var(--signal); color: oklch(0.16 0.02 40); padding: .6rem 1rem; border-radius: 0 0 8px 0; font-weight: 600; }
.skip:focus { left: 0; }

/* ---------- top bar ---------- */
.topbar { position: sticky; top: 0; z-index: 40; background: color-mix(in oklch, var(--graphite-900) 88%, transparent); border-bottom: 1px solid var(--line-dark); backdrop-filter: saturate(1.2) blur(6px); }
.topbar .shell { display: flex; align-items: center; justify-content: space-between; height: 3.5rem; gap: 1rem; }
.wordmark { font-weight: 700; letter-spacing: -0.02em; font-size: var(--step-0); text-decoration: none; }
.wordmark b { color: var(--signal); }
.nav { display: flex; gap: clamp(0.6rem, 1.6vw, 1.4rem); align-items: center; }
.nav a { font-size: var(--step--1); color: var(--bone-mute); text-decoration: none; transition: color .2s var(--ease); }
.nav a:hover, .nav a[aria-current="page"] { color: var(--bone); }
.nav a[aria-current="page"] { color: var(--signal); }
.nav .cta { color: var(--bone); border: 1px solid var(--line-dark); padding: .35rem .7rem; border-radius: 999px; }
.nav .cta:hover { border-color: var(--signal); color: var(--signal); }
/* mobile nav toggle */
.nav-toggle { display: none; background: none; border: 1px solid var(--line-dark); border-radius: 8px; color: var(--bone); width: 2.3rem; height: 2.3rem; cursor: pointer; align-items: center; justify-content: center; }
.nav-toggle svg { width: 18px; height: 18px; }
@media (max-width: 720px) {
  .nav-toggle { display: inline-flex; }
  .nav { position: fixed; inset: 3.5rem 0 auto 0; flex-direction: column; align-items: stretch; gap: 0; background: var(--graphite-800); border-bottom: 1px solid var(--line-dark); padding: .5rem clamp(1.1rem, 4vw, 3rem) 1rem; transform: translateY(-120%); transition: transform .3s var(--ease); }
  .nav[data-open="true"] { transform: translateY(0); }
  .nav a { padding: .7rem 0; border-bottom: 1px solid var(--line-dark); font-size: var(--step-0); }
  .nav .cta { border-radius: 8px; margin-top: .7rem; text-align: center; }
}

/* ---------- console surface ---------- */
.console { position: relative; background: var(--graphite-900); overflow: hidden; }
.console::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image: linear-gradient(var(--line-dark) 1px, transparent 1px), linear-gradient(90deg, var(--line-dark) 1px, transparent 1px);
  background-size: 54px 54px;
  -webkit-mask-image: radial-gradient(120% 90% at 75% 0%, #000 30%, transparent 78%);
          mask-image: radial-gradient(120% 90% at 75% 0%, #000 30%, transparent 78%);
}
.console > * { position: relative; }
.reg { position: absolute; width: 14px; height: 14px; pointer-events: none; color: var(--bone-mute); opacity: .55; }
.reg::before, .reg::after { content: ""; position: absolute; background: currentColor; }
.reg::before { left: 50%; top: 0; width: 1px; height: 100%; transform: translateX(-.5px); }
.reg::after { top: 50%; left: 0; height: 1px; width: 100%; transform: translateY(-.5px); }
.reg.tl { top: 18px; left: 18px; } .reg.tr { top: 18px; right: 18px; } .reg.bl { bottom: 18px; left: 18px; } .reg.br { bottom: 18px; right: 18px; }

/* ---------- hero ---------- */
.hero { position: relative; padding-block: clamp(3.5rem, 9vh, 6.5rem); }
.hero .shell { position: relative; display: grid; gap: clamp(1.8rem, 4vw, 3.2rem); grid-template-columns: 1.55fr 1fr; align-items: center; }
@media (max-width: 860px) { .hero .shell { grid-template-columns: 1fr; } }
.hero .eyebrow { display: inline-flex; gap: .6rem; align-items: center; margin-bottom: 1.4rem; }
.hero .eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--signal); box-shadow: 0 0 0 4px color-mix(in oklch, var(--signal) 22%, transparent); }
.hero h1 { font-size: var(--step-4); font-weight: 800; letter-spacing: -0.038em; max-width: 16ch; }
.hero h1 em { font-style: normal; color: var(--signal); }
.hero .lede { margin-top: 1.5rem; max-width: 46ch; color: var(--bone-mute); font-size: var(--step-1); line-height: 1.45; font-weight: 400; }
.hero .actions { margin-top: 2.1rem; display: flex; gap: .9rem; flex-wrap: wrap; align-items: center; }

.btn { font-family: var(--sans); font-size: var(--step-0); font-weight: 500; text-decoration: none; padding: .7rem 1.15rem; border-radius: 8px; display: inline-flex; gap: .5rem; align-items: center; transition: .2s var(--ease); cursor: pointer; }
.btn-primary { background: var(--signal); color: oklch(0.16 0.02 40); border: 1px solid var(--signal); }
.btn-primary:hover { background: var(--signal-deep); color: var(--bone); transform: translateY(-1px); }
.btn-ghost { color: var(--bone); border: 1px solid var(--line-dark); background: none; }
.btn-ghost:hover { border-color: var(--bone-mute); }
.essay .btn-ghost { color: var(--ink); border-color: var(--line-light); }
.essay .btn-ghost:hover { border-color: var(--ink-mute); }

/* status panel */
.panel { border: 1px solid var(--line-dark); border-radius: 12px; background: linear-gradient(180deg, var(--graphite-800), var(--graphite-900)); padding: 1.15rem 1.2rem 1.3rem; position: relative; }
.panel .phead { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--line-dark); padding-bottom: .7rem; margin-bottom: .5rem; }
.panel .phead .live { display: inline-flex; gap: .45rem; align-items: center; color: var(--bone-mute); }
.panel .phead .live .blip { width: 6px; height: 6px; border-radius: 50%; background: var(--signal); animation: blip 2.4s var(--ease) infinite; }
@keyframes blip { 0%, 100% { opacity: .25; } 50% { opacity: 1; } }
.readout { display: grid; grid-template-columns: auto 1fr; gap: .55rem 1rem; padding-block: .7rem; border-bottom: 1px solid var(--line-dark); }
.readout:last-of-type { border-bottom: 0; }
.readout dt { font-family: var(--mono); font-size: var(--step--1); letter-spacing: .06em; color: var(--signal); }
.readout dd { font-size: var(--step--1); color: var(--bone); }

/* ---------- section frame ---------- */
.section { padding-block: clamp(3.5rem, 8vh, 6rem); }
.section-head { display: flex; align-items: baseline; gap: 1rem; margin-bottom: 2.4rem; flex-wrap: wrap; }
.section-head .ref { font-family: var(--mono); font-size: var(--step--1); color: var(--signal); letter-spacing: .06em; }
.section-head h2 { font-size: var(--step-3); font-weight: 700; }
.section-head p { color: var(--bone-mute); max-width: 42ch; margin-left: auto; font-size: var(--step-0); }
.essay .section-head .ref { color: var(--signal-deep); }
.essay .section-head h2 { color: var(--ink); }
.essay .section-head p { color: var(--ink-mute); }

/* ---------- capability map ---------- */
.cap { display: grid; grid-template-columns: 1.4fr .9fr; gap: clamp(1.4rem, 3vw, 2.6rem); align-items: center; }
@media (max-width: 820px) { .cap { grid-template-columns: 1fr; } }
.capfig { border: 1px solid var(--line-dark); border-radius: 14px; background: radial-gradient(120% 120% at 80% 10%, var(--graphite-800), var(--graphite-900)); padding: .5rem; }
.capfig svg { display: block; width: 100%; height: auto; }
.node { cursor: pointer; }
.node circle { transition: .25s var(--ease); }
.node .ring { fill: var(--graphite-700); stroke: var(--line-dark); stroke-width: 1.5; }
.node .core { fill: var(--bone-mute); transition: .25s var(--ease); }
.node text { font-family: var(--mono); font-size: 11px; letter-spacing: .04em; fill: var(--bone-mute); transition: .25s var(--ease); }
.trace { fill: none; stroke: var(--line-dark); stroke-width: 1.5; transition: .3s var(--ease); }
.node:hover .core, .node:focus-visible .core, .node.on .core { fill: var(--signal); }
.node:hover .ring, .node:focus-visible .ring, .node.on .ring { stroke: var(--signal); }
.node:hover text, .node:focus-visible text, .node.on text { fill: var(--bone); }
.trace.on { stroke: var(--trace); stroke-width: 2.5; }
.hub circle { fill: var(--graphite-700); stroke: var(--signal); stroke-width: 1.5; }
.hub text { font-family: var(--mono); font-size: 10px; fill: var(--signal); letter-spacing: .08em; }
.capread { border: 1px solid var(--line-dark); border-radius: 12px; padding: 1.2rem 1.3rem; background: var(--graphite-800); min-height: 9.5rem; }
.capread .k { font-family: var(--mono); font-size: var(--step--1); color: var(--signal); letter-spacing: .06em; }
.capread h3 { font-size: var(--step-1); margin: .5rem 0 .55rem; letter-spacing: -0.02em; }
.capread p { color: var(--bone-mute); font-size: var(--step-0); }
.caphint { margin-top: .9rem; font-size: var(--step--1); color: var(--bone-mute); }

/* ---------- work / case-study index cards ---------- */
.worklist { display: grid; gap: 1px; border: 1px solid var(--line-dark); border-radius: 14px; overflow: hidden; background: var(--line-dark); }
.workcard { display: grid; grid-template-columns: auto 1fr auto; gap: 1.2rem; align-items: center; padding: 1.4rem clamp(1.1rem, 2.5vw, 1.8rem); background: var(--graphite-900); text-decoration: none; transition: background .2s var(--ease); }
.workcard:hover { background: var(--graphite-800); }
.workcard .ref { font-family: var(--mono); font-size: var(--step--1); color: var(--signal); letter-spacing: .05em; white-space: nowrap; align-self: start; padding-top: .2rem; }
.workcard h3 { font-size: var(--step-2); letter-spacing: -0.02em; }
.workcard .kick { color: var(--bone-mute); margin-top: .3rem; font-size: var(--step-0); }
.workcard .go { color: var(--bone-mute); font-family: var(--mono); font-size: var(--step--1); transition: color .2s var(--ease), transform .2s var(--ease); }
.workcard:hover .go { color: var(--signal); transform: translateX(3px); }
@media (max-width: 620px) { .workcard { grid-template-columns: 1fr; gap: .5rem; } .workcard .go { display: none; } }

/* ---------- essay / case study (paper) ---------- */
.essay { background: var(--paper); color: var(--ink); }
.essay .label { color: var(--ink-mute); }
.casehead { border-bottom: 1px solid var(--line-light); padding-bottom: 1.6rem; margin-bottom: 2.4rem; }
.casehead .ref { font-family: var(--mono); color: var(--signal-deep); font-size: var(--step--1); letter-spacing: .06em; }
.casehead h1, .casehead h2 { font-size: var(--step-3); color: var(--ink); margin: .7rem 0 .5rem; max-width: 20ch; }
.casehead .kick { color: var(--ink-mute); font-size: var(--step-1); font-weight: 400; }
.casegrid { display: grid; grid-template-columns: 1.6fr .9fr; gap: clamp(1.6rem, 4vw, 3.4rem); align-items: start; }
@media (max-width: 860px) { .casegrid { grid-template-columns: 1fr; } }
.prose { max-width: 70ch; }
.prose h2 { font-size: var(--step-2); color: var(--ink); margin: 2rem 0 .8rem; letter-spacing: -0.02em; }
.prose h3 { font-size: var(--step-1); color: var(--ink); margin: 1.6rem 0 .6rem; }
.prose p { max-width: 68ch; margin-bottom: 1.1rem; color: var(--ink); font-size: var(--step-0); line-height: 1.62; }
.prose a { color: var(--signal-deep); text-underline-offset: 3px; }
.prose ul { margin: 0 0 1.1rem 1.1rem; color: var(--ink); }
.prose li { margin-bottom: .4rem; line-height: 1.55; }
.prose strong { font-weight: 600; }
.prose p.flag, .flag { border: 1px dashed var(--signal-deep); background: oklch(0.66 0.185 42 / .06); padding: .8rem .95rem; border-radius: 8px; color: var(--ink-mute); font-size: var(--step--1); }
.figure { margin: 1.6rem 0; border: 1px solid var(--line-light); border-radius: 12px; background: var(--paper-sink); padding: .4rem; }
.figure svg { display: block; width: 100%; height: auto; }
.figcap { font-family: var(--mono); font-size: var(--step--1); color: var(--ink-mute); padding: .6rem .8rem 0; letter-spacing: .02em; }
.datasheet { border: 1px solid var(--line-light); border-radius: 12px; background: var(--paper-sink); position: sticky; top: 4.5rem; }
.datasheet .dh { font-family: var(--mono); font-size: var(--step--1); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-mute); padding: .9rem 1.1rem; border-bottom: 1px solid var(--line-light); }
.datasheet dl { display: grid; grid-template-columns: 1fr; padding: .4rem 1.1rem 1.1rem; }
.datasheet dt { font-family: var(--mono); font-size: var(--step--1); letter-spacing: .05em; color: var(--signal-deep); margin-top: 1rem; }
.datasheet dd { font-size: var(--step--1); color: var(--ink); line-height: 1.5; margin-top: .25rem; }
.casenav { margin-top: 3rem; padding-top: 1.4rem; border-top: 1px solid var(--line-light); display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.casenav a { font-family: var(--mono); font-size: var(--step--1); color: var(--signal-deep); text-decoration: none; }

/* ---------- about (essay) ---------- */
.lede-essay { font-size: var(--step-2); line-height: 1.32; color: var(--ink); max-width: 24ch; letter-spacing: -0.02em; font-weight: 600; }
.about-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: clamp(1.6rem, 4vw, 3.4rem); align-items: start; margin-top: 2.4rem; }
@media (max-width: 820px) { .about-grid { grid-template-columns: 1fr; } }

/* ---------- timeline / arc (console) ---------- */
.arc { position: relative; }
.arc-line { position: relative; margin-left: .2rem; padding-left: 1.8rem; border-left: 1px solid var(--line-dark); }
.milestone { position: relative; padding-bottom: 2.2rem; }
.milestone:last-child { padding-bottom: 0; }
.milestone::before { content: ""; position: absolute; left: calc(-1.8rem - 5px); top: .35rem; width: 9px; height: 9px; border-radius: 50%; background: var(--graphite-700); border: 1.5px solid var(--bone-mute); }
.milestone.key::before { background: var(--signal); border-color: var(--signal); box-shadow: 0 0 0 4px color-mix(in oklch, var(--signal) 18%, transparent); }
.milestone .era { font-family: var(--mono); font-size: var(--step--1); color: var(--signal); letter-spacing: .05em; }
.milestone h3 { font-size: var(--step-1); margin: .25rem 0 .4rem; letter-spacing: -0.02em; }
.milestone p { color: var(--bone-mute); max-width: 60ch; }
.proof { margin: 1rem 0 0 0; padding: 1rem 1.2rem; border: 1px solid var(--line-dark); border-radius: 10px; background: var(--graphite-800); list-style: none; }
.proof li { display: flex; gap: .6rem; padding: .35rem 0; color: var(--bone); font-size: var(--step--1); }
.proof li::before { content: "→"; color: var(--signal); font-family: var(--mono); }

/* ---------- automancer panel (console) ---------- */
.amancer { display: grid; grid-template-columns: 1.2fr 1fr; gap: clamp(1.6rem, 4vw, 3rem); align-items: center; }
@media (max-width: 820px) { .amancer { grid-template-columns: 1fr; } }
.amancer .body p { color: var(--bone-mute); margin-bottom: 1rem; max-width: 56ch; }
.amancer .body p.note-line { color: var(--bone); border-left: 2px solid var(--signal); padding-left: 1rem; }
.amancer .actions { margin-top: 1.6rem; display: flex; gap: .9rem; flex-wrap: wrap; }
.diagram-panel { border: 1px solid var(--line-dark); border-radius: 14px; background: radial-gradient(120% 120% at 20% 10%, var(--graphite-800), var(--graphite-900)); padding: .6rem; }
.diagram-panel svg { display: block; width: 100%; height: auto; }

/* ---------- lab (console) ---------- */
.lab-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: 1.1rem; }
.lab-card { border: 1px solid var(--line-dark); border-radius: 12px; padding: 1.3rem 1.4rem; background: var(--graphite-800); text-decoration: none; display: flex; flex-direction: column; gap: .5rem; transition: border-color .2s var(--ease), transform .2s var(--ease); }
.lab-card:hover { border-color: var(--signal); transform: translateY(-2px); }
.lab-card .tag { font-family: var(--mono); font-size: var(--step--1); color: var(--signal); letter-spacing: .05em; }
.lab-card h3 { font-size: var(--step-1); letter-spacing: -0.02em; }
.lab-card p { color: var(--bone-mute); font-size: var(--step-0); }
.lab-card .ext { font-family: var(--mono); font-size: var(--step--1); color: var(--bone-mute); margin-top: auto; }
.lab-card:hover .ext { color: var(--bone); }

/* ---------- contact ---------- */
.contact-cta { display: flex; flex-direction: column; gap: 1.4rem; align-items: flex-start; }
.email-big { font-family: var(--mono); font-size: clamp(1.3rem, 1rem + 2.2vw, 2.4rem); color: var(--bone); text-decoration: none; letter-spacing: -0.01em; border-bottom: 2px solid var(--signal); padding-bottom: .2rem; word-break: break-word; }
.email-big:hover { color: var(--signal); }
.contact-close { color: var(--bone-mute); max-width: 48ch; }

/* ---------- notes (essay) ---------- */
.notes-list { display: grid; gap: 1.2rem; }
.note-item { border-bottom: 1px solid var(--line-light); padding-bottom: 1.2rem; }
.note-item .date { font-family: var(--mono); font-size: var(--step--1); color: var(--ink-mute); }
.note-item h2 { font-size: var(--step-2); margin: .3rem 0; }
.note-item h2 a { color: var(--ink); text-decoration: none; }
.note-item h2 a:hover { color: var(--signal-deep); }
.note-item p { color: var(--ink-mute); max-width: 66ch; }
.notes-empty { border: 1px dashed var(--line-light); border-radius: 12px; padding: 2rem; color: var(--ink-mute); max-width: 56ch; }

/* ---------- footer ---------- */
.foot { border-top: 1px solid var(--line-dark); padding-block: 2.6rem; color: var(--bone-mute); font-size: var(--step--1); }
.foot .shell { display: grid; grid-template-columns: 1fr auto; gap: 1.4rem; align-items: start; }
@media (max-width: 620px) { .foot .shell { grid-template-columns: 1fr; } }
.foot a { color: var(--bone); text-decoration: none; }
.foot a:hover { color: var(--signal); }
.foot .fnav { display: flex; gap: 1.2rem; flex-wrap: wrap; }
.foot .meta { color: var(--bone-mute); }

/* ---------- calibration motion ----------
   Content is visible by DEFAULT. The reveal only enhances. */
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes fadein { from { opacity: 0; } to { opacity: .55; } }
.js [data-cal].in { animation: rise .7s var(--ease) both; }
.js .reg.in { animation: fadein .9s var(--ease) both; }
@media (prefers-reduced-motion: reduce) {
  .js [data-cal].in, .js .reg.in { animation: none; }
  .panel .phead .live .blip { animation: none; }
}