/* Zaid Saifan Portfolio
   Concept: a powered-up circuit board. Midnight solder-mask background, copper traces that glow,
   datasheet details (title blocks, spec tables, numbered figures). Dark by default, light on toggle. */

/* ============ Tokens ============ */
:root {
  --paper: #070B12;          /* page background */
  --paper-2: #0A0F18;        /* alternate band */
  --panel: #0E1520;          /* cards */
  --panel-2: #121B28;
  --ink: #E8EDF4;
  --muted: #8C9AAE;
  --line: #1C2738;
  --line-2: #26344A;
  --copper: #F08A4B;
  --copper-2: #FFB37A;
  --copper-soft: rgba(240, 138, 75, .12);
  --mask: #7FB0FF;
  --mask-soft: rgba(127, 176, 255, .1);
  --ok: #3DDC97;
  --glow: 0 0 0 1px rgba(240,138,75,.35), 0 10px 40px -10px rgba(240,138,75,.35);
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 20px 50px -24px rgba(0,0,0,.8);
  --grad: linear-gradient(100deg, #FFB37A 0%, #F08A4B 40%, #7FB0FF 100%);
  --grid-dot: rgba(127, 176, 255, .07);

  --f-display: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  --f-body: "Inter", "Segoe UI", system-ui, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;

  --wrap: 74rem;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  --ease: cubic-bezier(.2, .7, .2, 1);
  --head-h: 4rem;
  color-scheme: dark;
}
:root[data-theme="light"] {
  --paper: #F5F7FA; --paper-2: #EDF1F6; --panel: #FFFFFF; --panel-2: #F7F9FC;
  --ink: #111823; --muted: #566377; --line: #DCE2EA; --line-2: #C9D2DE;
  --copper: #B4561E; --copper-2: #D2702F; --copper-soft: rgba(180, 86, 30, .1);
  --mask: #1F4A85; --mask-soft: rgba(31, 74, 133, .08); --ok: #179A62;
  --glow: 0 0 0 1px rgba(180,86,30,.35), 0 14px 40px -14px rgba(180,86,30,.35);
  --shadow: 0 1px 2px rgba(17,24,35,.06), 0 18px 40px -22px rgba(17,24,35,.28);
  --grad: linear-gradient(100deg, #D2702F 0%, #B4561E 45%, #1F4A85 100%);
  --grid-dot: rgba(31, 74, 133, .08);
  color-scheme: light;
}

/* ============ Base ============ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: calc(var(--head-h) + 1rem); }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 400 1.0625rem/1.65 var(--f-body);
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
  background-image: radial-gradient(var(--grid-dot) 1px, transparent 1px);
  background-size: 28px 28px;
  transition: background-color .4s, color .4s;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration-color: color-mix(in srgb, var(--copper) 60%, transparent); text-underline-offset: .2em; }
a:hover { color: var(--copper); }
:focus-visible { outline: 2px solid var(--copper); outline-offset: 3px; border-radius: 4px; }
::selection { background: var(--copper); color: #0A0F18; }
h1, h2, h3 { font-family: var(--f-display); line-height: 1.08; text-wrap: balance; margin: 0; letter-spacing: -.02em; }
p { margin: 0; }
.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); position: relative; }
.skip { position: absolute; left: -999px; top: .5rem; background: var(--ink); color: var(--paper); padding: .5rem .75rem; z-index: 200; }
.skip:focus { left: .5rem; }

.label { font: 500 .74rem/1.3 var(--f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.label--copper { color: var(--copper); }
.label .num { color: var(--copper); margin-right: .75rem; padding-right: .75rem; border-right: 1px solid var(--line-2); }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; background-size: 200% 100%; animation: shimmer 8s ease-in-out infinite alternate; }
@keyframes shimmer { to { background-position: 100% 0; } }

/* Scroll progress + cursor spotlight */
.progress { position: fixed; inset: 0 0 auto 0; height: 2px; z-index: 120; pointer-events: none; }
.progress span { display: block; height: 100%; width: 100%; transform-origin: 0 50%; transform: scaleX(var(--p, 0)); background: var(--grad); box-shadow: 0 0 12px var(--copper); }
.spotlight {
  position: fixed; inset: 0; pointer-events: none; z-index: 0; opacity: 0; transition: opacity .5s;
  background: radial-gradient(600px circle at var(--cx, 50%) var(--cy, 50%), rgba(240,138,75,.07), transparent 60%);
}
.has-pointer .spotlight { opacity: 1; }
:root[data-theme="light"] .spotlight { background: radial-gradient(600px circle at var(--cx, 50%) var(--cy, 50%), rgba(180,86,30,.06), transparent 60%); }
main, .contact, .site-foot { position: relative; z-index: 1; }

/* ============ Header ============ */
.site-head {
  position: sticky; top: 0; z-index: 100; height: var(--head-h);
  transition: background .3s, border-color .3s, box-shadow .3s;
  border-bottom: 1px solid transparent;
}
.site-head.is-stuck, .site-head.is-open {
  background: color-mix(in srgb, var(--paper) 78%, transparent);
  backdrop-filter: saturate(1.6) blur(14px); -webkit-backdrop-filter: saturate(1.6) blur(14px);
  border-bottom-color: var(--line);
}
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; height: 100%; }
.brand { display: flex; align-items: center; gap: .7rem; text-decoration: none; font: 700 1.02rem/1 var(--f-display); }
.brand:hover { color: var(--ink); }
.brand-mark {
  width: 2.15rem; height: 2.15rem; display: grid; place-items: center; border-radius: 8px; position: relative;
  background: var(--panel); border: 1px solid var(--line-2); color: var(--copper); font: 600 .78rem/1 var(--f-mono);
  transition: box-shadow .3s, transform .3s var(--ease);
}
.brand:hover .brand-mark { box-shadow: var(--glow); transform: rotate(-6deg); }
.nav { display: flex; gap: .25rem; align-items: center; position: relative; }
.nav a {
  position: relative; z-index: 1; text-decoration: none; font-weight: 500; font-size: .92rem; color: var(--muted);
  padding: .45rem .8rem; border-radius: 999px; transition: color .2s;
}
.nav a:hover, .nav a.is-active, .nav a[aria-current="page"] { color: var(--ink); }
.nav-ind {
  position: absolute; z-index: 0; top: 50%; left: 0; height: 2.1rem; width: 0; border-radius: 999px;
  background: var(--panel); border: 1px solid var(--line-2); transform: translateY(-50%);
  transition: left .35s var(--ease), width .35s var(--ease), opacity .3s; opacity: 0;
}
.head-actions { display: flex; align-items: center; gap: .5rem; }
.icon-btn {
  width: 2.35rem; height: 2.35rem; display: grid; place-items: center; border-radius: 999px; cursor: pointer;
  background: transparent; border: 1px solid var(--line-2); color: var(--ink); transition: border-color .2s, color .2s, transform .3s var(--ease);
}
.icon-btn:hover { border-color: var(--copper); color: var(--copper); }
.icon-btn svg { width: 1.05rem; height: 1.05rem; }
.theme-toggle:hover { transform: rotate(20deg); }
.theme-toggle .i-moon { display: none; }
:root[data-theme="light"] .theme-toggle .i-sun { display: none; }
:root[data-theme="light"] .theme-toggle .i-moon { display: block; }
.btn-sm {
  font: 600 .88rem/1 var(--f-body); text-decoration: none; padding: .62rem 1rem; border-radius: 999px;
  background: var(--copper); color: #0A0F18; transition: box-shadow .25s, transform .25s var(--ease);
}
.btn-sm:hover { color: #0A0F18; box-shadow: var(--glow); transform: translateY(-1px); }
:root[data-theme="light"] .btn-sm, :root[data-theme="light"] .btn-sm:hover { color: #fff; }
.menu-toggle { display: none; }
.menu-toggle span { display: block; width: 1rem; height: 1.6px; background: currentColor; border-radius: 2px; transition: transform .3s var(--ease); grid-area: 1 / 1; }
.menu-toggle span:first-child { transform: translateY(-3.5px); }
.menu-toggle span:last-child { transform: translateY(3.5px); }
.is-open .menu-toggle span:first-child { transform: rotate(45deg); }
.is-open .menu-toggle span:last-child { transform: rotate(-45deg); }

@media (max-width: 860px) {
  .menu-toggle { display: grid; }
  .nav {
    position: fixed; top: var(--head-h); left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0;
    padding: .75rem var(--gutter) 1.25rem; background: var(--paper); box-shadow: var(--shadow); border-bottom: 1px solid var(--line);
    transform: translateY(-.75rem); opacity: 0; visibility: hidden; transition: transform .3s var(--ease), opacity .3s, visibility .3s;
  }
  .is-open .nav { transform: none; opacity: 1; visibility: visible; }
  .nav a { padding: .9rem .25rem; border-radius: 0; border-bottom: 1px solid var(--line); font-size: 1.05rem; }
  .nav-ind { display: none; }
}
@media (max-width: 420px) { .brand-name { display: none; } }

/* ============ Buttons ============ */
.btns { display: flex; flex-wrap: wrap; gap: .7rem; }
.btn {
  position: relative; display: inline-flex; align-items: center; gap: .55rem; text-decoration: none; overflow: hidden;
  font: 600 .95rem/1 var(--f-body); padding: .95rem 1.25rem; border-radius: 999px;
  border: 1px solid var(--copper); background: var(--copper); color: #0A0F18;
  transition: box-shadow .25s, border-color .25s, color .25s, background .25s, transform .25s var(--ease);
}
.btn::after {
  content: ""; position: absolute; inset: 0; background: linear-gradient(110deg, transparent 30%, rgba(255,255,255,.35) 50%, transparent 70%);
  transform: translateX(-120%); transition: transform .7s var(--ease);
}
.btn:hover { color: #0A0F18; box-shadow: var(--glow); }
.btn:hover::after { transform: translateX(120%); }
:root[data-theme="light"] .btn, :root[data-theme="light"] .btn:hover { color: #fff; }
.btn--ghost, :root[data-theme="light"] .btn--ghost { background: color-mix(in srgb, var(--panel) 60%, transparent); color: var(--ink); border-color: var(--line-2); }
.btn--ghost:hover, :root[data-theme="light"] .btn--ghost:hover { color: var(--copper); border-color: var(--copper); box-shadow: none; }
.btn--ghost::after { display: none; }
.btn--icon { padding: .95rem; }
.btn svg { width: 1.05em; height: 1.05em; flex: none; transition: transform .25s var(--ease); }
.btn:hover svg:last-child:not(:first-child) { transform: translateX(3px); }

/* ============ Hero ============ */
.hero { position: relative; min-height: calc(100svh - var(--head-h)); display: grid; align-items: center; padding-block: clamp(2.5rem, 6vw, 4rem) clamp(4rem, 8vw, 6rem); margin-top: calc(var(--head-h) * -1); padding-top: calc(var(--head-h) + clamp(2rem, 6vw, 4rem)); overflow: hidden; }
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; }
.hero-fade { position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background: radial-gradient(ellipse 70% 60% at 30% 45%, color-mix(in srgb, var(--paper) 70%, transparent), transparent 70%),
              linear-gradient(to bottom, transparent 70%, var(--paper)); }
.hero-grid { z-index: 1; display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr); gap: clamp(2rem, 5vw, 4.5rem); align-items: center; width: 100%; }
.status {
  display: inline-flex; align-items: center; gap: .6rem; font: 500 .8rem/1 var(--f-mono); color: var(--ink);
  padding: .55rem .85rem .55rem .7rem; border-radius: 999px; border: 1px solid var(--line-2); background: color-mix(in srgb, var(--panel) 70%, transparent);
  backdrop-filter: blur(6px);
}
.status i { width: .55rem; height: .55rem; border-radius: 50%; background: var(--ok); position: relative; }
.status i::after { content: ""; position: absolute; inset: 0; border-radius: 50%; background: var(--ok); animation: ping 1.8s cubic-bezier(0,0,.2,1) infinite; }
@keyframes ping { 75%, 100% { transform: scale(2.6); opacity: 0; } }
.hello { margin-top: 1.75rem; font: 500 1.05rem/1 var(--f-mono); color: var(--copper); }
.hero-name { font-size: clamp(3.2rem, 9.5vw, 6.6rem); font-weight: 700; letter-spacing: -.045em; line-height: .92; margin-top: .6rem; }
.hero-name .split { display: inline-block; }
.hero-name .ch { display: inline-block; }
.hero-name .grad:has(.ch) { background: none; animation: none; }
.hero-name .grad .ch { background-image: var(--grad); background-repeat: no-repeat; -webkit-background-clip: text; background-clip: text; color: transparent; }
.typed { margin-top: 1.4rem; font: 500 clamp(.95rem, 2vw, 1.15rem)/1.4 var(--f-mono); color: var(--ink); min-height: 1.6em; }
.typed .prompt { color: var(--copper); }
.caret { display: inline-block; width: .55em; height: 1.1em; margin-left: 2px; vertical-align: -.18em; background: var(--copper); animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.hero .lede { margin-top: 1.25rem; max-width: 35rem; font-size: 1.1rem; color: var(--muted); }
.hero .btns { margin-top: 2rem; }
.hero-meta { margin-top: 2rem; display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; font-size: .9rem; color: var(--muted); }
.hero-meta span { display: inline-flex; align-items: center; gap: .45rem; }
.hero-meta svg { width: 1rem; height: 1rem; color: var(--copper); }

.hero-visual { position: relative; perspective: 1200px; }
.board {
  margin: 0; position: relative; background: color-mix(in srgb, var(--panel) 85%, transparent); border: 1px solid var(--line-2);
  border-radius: 16px; padding: .8rem; box-shadow: var(--shadow); transform-style: preserve-3d;
  transition: transform .5s var(--ease), box-shadow .4s; backdrop-filter: blur(6px);
}
.board::before { content: ""; position: absolute; inset: -1px; border-radius: inherit; padding: 1px; background: var(--grad); opacity: .55;
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none; }
.board-img { border-radius: 10px; overflow: hidden; background: #05080D; position: relative; }
.board-img img { width: 100%; }
.scan { position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(to bottom, transparent 0%, rgba(240,138,75,.0) 40%, rgba(240,138,75,.28) 50%, transparent 52%);
  background-size: 100% 220%; animation: scan 4.5s linear infinite; mix-blend-mode: screen; }
@keyframes scan { from { background-position: 0 120%; } to { background-position: 0 -120%; } }
.titleblock { margin-top: .8rem; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border: 1px solid var(--line-2); border-radius: 6px; font: 400 .68rem/1.3 var(--f-mono); }
.titleblock div { padding: .5rem .6rem; border-right: 1px solid var(--line-2); min-width: 0; }
.titleblock div:last-child { border-right: 0; }
.titleblock b { display: block; font-weight: 600; font-size: .76rem; color: var(--ink); margin-top: .2rem; overflow-wrap: anywhere; }
.titleblock span { color: var(--muted); text-transform: uppercase; letter-spacing: .08em; }
.float-chip {
  position: absolute; z-index: 2; display: inline-flex; align-items: center; gap: .45rem; white-space: nowrap;
  font: 500 .78rem/1 var(--f-mono); padding: .6rem .8rem; border-radius: 10px; color: var(--ink);
  background: color-mix(in srgb, var(--panel) 88%, transparent); border: 1px solid var(--line-2); box-shadow: var(--shadow);
  backdrop-filter: blur(8px); animation: bob 6s ease-in-out infinite;
}
.float-chip b { color: var(--copper); }
.float-chip i { width: .5rem; height: .5rem; border-radius: 50%; background: var(--mask); box-shadow: 0 0 10px var(--mask); }
.float-chip.c1 { top: -1rem; left: -1.25rem; }
.float-chip.c2 { bottom: 4.5rem; right: -1.5rem; animation-delay: -2s; }
.float-chip.c3 { bottom: -1rem; left: 12%; animation-delay: -4s; color: var(--mask); }
@keyframes bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
.scroll-cue { position: absolute; z-index: 1; left: 50%; bottom: 1.5rem; translate: -50% 0; width: 1.5rem; height: 2.4rem; border: 1.5px solid var(--line-2); border-radius: 999px; }
.scroll-cue span { position: absolute; left: 50%; top: .45rem; width: 3px; height: .5rem; margin-left: -1.5px; border-radius: 2px; background: var(--copper); animation: wheel 1.8s var(--ease) infinite; }
@keyframes wheel { 0% { opacity: 0; transform: translateY(-3px); } 30% { opacity: 1; } 100% { opacity: 0; transform: translateY(12px); } }

@media (max-width: 920px) {
  .hero { min-height: 0; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { max-width: 34rem; margin-top: 1rem; }
  .scroll-cue { display: none; }
}
@media (max-width: 560px) {
  .titleblock { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .titleblock div:nth-child(2) { border-right: 0; }
  .titleblock div:nth-child(-n+2) { border-bottom: 1px solid var(--line-2); }
  .float-chip.c1 { left: .25rem; } .float-chip.c2 { right: .25rem; bottom: 5.5rem; }
}

/* ============ Facts strip ============ */
.facts { position: relative; z-index: 1; border-block: 1px solid var(--line); background: color-mix(in srgb, var(--paper-2) 85%, transparent); }
.facts-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.fact { padding: 1.8rem 1.4rem; border-right: 1px solid var(--line); min-width: 0; position: relative; }
.fact:first-child { padding-left: 0; }
.fact:last-child { border-right: 0; }
.fact b { display: block; font: 700 clamp(1.7rem, 3.5vw, 2.3rem)/1 var(--f-display); font-variant-numeric: tabular-nums; letter-spacing: -.03em; color: var(--ink); }
.fact b::first-letter { color: inherit; }
.fact span:not([data-count]) { display: block; margin-top: .55rem; font-size: .86rem; color: var(--muted); line-height: 1.45; }
.fact b span { display: inline !important; margin: 0 !important; font-size: inherit !important; color: var(--copper) !important; }
@media (max-width: 760px) {
  .facts-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .fact { padding: 1.3rem 1rem; }
  .fact:nth-child(odd) { padding-left: 0; }
  .fact:nth-child(2) { border-right: 0; }
  .fact:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
}

/* ============ Marquee ============ */
.marquee { position: relative; z-index: 1; overflow: hidden; padding-block: 1.1rem; border-bottom: 1px solid var(--line);
  -webkit-mask: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); mask: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); }
.marquee-track { display: flex; width: max-content; animation: marquee 40s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee span { font: 500 .9rem/1 var(--f-mono); color: var(--muted); padding-inline: 1.5rem; display: inline-flex; align-items: center; gap: 1.5rem; white-space: nowrap; }
.marquee span::after { content: "◆"; font-size: .5rem; color: var(--copper); margin-left: 1.5rem; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ============ Sections ============ */
.section { padding-block: clamp(4rem, 9vw, 7rem); position: relative; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 1rem 2.5rem; flex-wrap: wrap; margin-bottom: clamp(2rem, 4vw, 3rem); }
.section-head h2 { font-size: clamp(2.1rem, 4.8vw, 3.4rem); font-weight: 700; letter-spacing: -.035em; margin-top: .9rem; max-width: 22ch; }
.section-head > p { max-width: 30rem; color: var(--muted); }

/* Generic interactive card with cursor spotlight */
.spot { position: relative; isolation: isolate; }
.spot::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; z-index: -1; pointer-events: none; opacity: 0; transition: opacity .35s;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), rgba(240,138,75,.11), transparent 45%);
}
.spot::after {
  content: ""; position: absolute; inset: -1px; border-radius: inherit; pointer-events: none; opacity: 0; transition: opacity .35s; padding: 1px;
  background: radial-gradient(300px circle at var(--mx, 50%) var(--my, 50%), var(--copper), transparent 50%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude;
}
.spot:hover::before, .spot:hover::after { opacity: 1; }

/* About pillars */
.pillars { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.1rem; }
.pillar { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: clamp(1.4rem, 3vw, 2rem); display: grid; gap: .9rem; align-content: start; transition: transform .35s var(--ease), border-color .3s; }
.pillar:hover { transform: translateY(-4px); }
.pillar-icon { width: 3rem; height: 3rem; border-radius: 12px; display: grid; place-items: center; background: var(--copper-soft); color: var(--copper); border: 1px solid color-mix(in srgb, var(--copper) 30%, transparent); }
.pillar-icon svg { width: 1.5rem; height: 1.5rem; }
.pillar:hover .pillar-icon svg { animation: wiggle .6s var(--ease); }
@keyframes wiggle { 30% { transform: rotate(-10deg) scale(1.1); } 60% { transform: rotate(6deg); } }
.pillar h3 { font-size: 1.3rem; font-weight: 600; }
.pillar p { color: var(--muted); font-size: .97rem; }
@media (max-width: 860px) { .pillars { grid-template-columns: 1fr; } }

/* ============ Projects ============ */
.filters { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1.75rem; }
.filters button {
  font: 500 .88rem/1 var(--f-body); color: var(--muted); background: var(--panel); border: 1px solid var(--line);
  padding: .65rem 1rem; border-radius: 999px; cursor: pointer; display: inline-flex; align-items: center; gap: .5rem;
  transition: color .2s, border-color .2s, background .2s;
}
.filters button span { font: 500 .72rem/1 var(--f-mono); padding: .2rem .4rem; border-radius: 999px; background: var(--line); color: var(--muted); transition: inherit; }
.filters button:hover { color: var(--ink); border-color: var(--line-2); }
.filters button.is-on { color: var(--ink); border-color: var(--copper); background: var(--copper-soft); }
.filters button.is-on span { background: var(--copper); color: #0A0F18; }

.projects { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; }
.proj {
  display: flex; flex-direction: column; background: var(--panel); border: 1px solid var(--line); border-radius: 18px; overflow: hidden;
  text-decoration: none; color: inherit; transform-style: preserve-3d;
  transition: transform .45s var(--ease), border-color .3s, box-shadow .4s, opacity .4s;
}
.proj:hover { color: inherit; box-shadow: var(--shadow); border-color: var(--line-2); }
.projects .proj.is-hidden { display: none !important; }
.proj.is-entering { animation: pop .5s var(--ease) both; }
@keyframes pop { from { opacity: 0; transform: translateY(16px) scale(.98); } }
.proj-media { position: relative; overflow: hidden; aspect-ratio: 16 / 9.5; background: var(--panel-2); display: grid; place-items: center; border-bottom: 1px solid var(--line); }
.proj-media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease), filter .5s; filter: saturate(.9); }
.proj:hover .proj-media img { transform: scale(1.06); filter: saturate(1.1); }
.proj-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, color-mix(in srgb, var(--panel) 55%, transparent), transparent 45%); pointer-events: none; }
.proj-media--svg { background: radial-gradient(circle at 50% 40%, var(--panel-2), var(--paper-2)); }
.proj-media--svg::after { display: none; }
.proj-media svg { width: 88%; height: auto; max-height: 86%; transition: transform .6s var(--ease); }
.proj:hover .proj-media svg { transform: scale(1.03); }
.proj-badge { position: absolute; z-index: 1; top: 1rem; left: 1rem; font: 600 .7rem/1 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; padding: .45rem .65rem; border-radius: 999px; background: var(--copper); color: #0A0F18; }
.proj-badge--video { background: color-mix(in srgb, #05080D 70%, transparent); color: #fff; backdrop-filter: blur(6px); border: 1px solid rgba(255,255,255,.2); }
.proj-body { padding: clamp(1.3rem, 2.8vw, 1.9rem); display: flex; flex-direction: column; gap: .85rem; flex: 1; min-width: 0; }
.proj-body h3 { font-size: clamp(1.25rem, 2.2vw, 1.5rem); font-weight: 600; transition: color .25s; }
.proj:hover h3 { color: var(--copper); }
.proj-body > p:not(.label) { color: var(--muted); font-size: .98rem; }
.proj-more { margin-top: auto; padding-top: .4rem; font-weight: 600; font-size: .93rem; color: var(--copper); display: inline-flex; gap: .4rem; align-items: center; }
.proj-more span { transition: transform .3s var(--ease); }
.proj:hover .proj-more span { transform: translateX(5px); }
.mini-stats { display: flex; flex-wrap: wrap; gap: .6rem; }
.mini-stats span { display: grid; gap: .15rem; padding: .6rem .85rem; border-radius: 10px; background: var(--copper-soft); font-size: .76rem; color: var(--muted); }
.mini-stats b { font: 700 1.1rem/1 var(--f-display); color: var(--copper); }

.proj--feature { grid-column: 1 / -1; display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); }
.proj--feature .proj-media { aspect-ratio: auto; min-height: 24rem; border-bottom: 0; border-right: 1px solid var(--line); }
.proj--feature .proj-media::after { background: linear-gradient(to right, transparent 60%, color-mix(in srgb, var(--panel) 50%, transparent)); }
.proj--feature h3 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
.proj--rev { grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); }
.proj--rev .proj-media { order: 2; border-right: 0; border-left: 1px solid var(--line); }
.proj--rev .proj-media::after { background: linear-gradient(to left, transparent 60%, color-mix(in srgb, var(--panel) 50%, transparent)); }
.projects.is-filtered .proj--rev .proj-media { order: 0; border-left: 0; }
.projects.is-filtered .proj--feature { grid-column: auto; display: flex; }
.projects.is-filtered .proj--feature .proj-media { aspect-ratio: 16 / 9.5; min-height: 0; border-right: 0; border-bottom: 1px solid var(--line); }
.projects.is-filtered .mini-stats { display: none; }
@media (max-width: 820px) {
  .projects { grid-template-columns: 1fr; }
  .proj--feature { display: flex; }
  .proj--feature .proj-media { aspect-ratio: 16 / 10; min-height: 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .proj--rev .proj-media { order: 0; border-left: 0; }
}

.tags { display: flex; flex-wrap: wrap; gap: .4rem; list-style: none; padding: 0; margin: 0; }
.tags li { font: 500 .72rem/1 var(--f-mono); padding: .42rem .6rem; border-radius: 6px; background: var(--mask-soft); color: var(--mask); border: 1px solid color-mix(in srgb, var(--mask) 18%, transparent); }

/* ============ Experience timeline ============ */
.timeline { position: relative; display: grid; gap: 1.5rem; padding-left: 2.25rem; }
.timeline-line { position: absolute; left: .45rem; top: .4rem; bottom: .4rem; width: 2px; background: var(--line); border-radius: 2px; overflow: hidden; }
.timeline-line span { position: absolute; inset: 0; transform-origin: top; transform: scaleY(var(--t, 0)); background: linear-gradient(var(--copper), var(--mask)); box-shadow: 0 0 10px var(--copper); }
.job { position: relative; display: grid; grid-template-columns: 11rem minmax(0, 1fr); gap: 1rem 2rem; }
.job-dot { position: absolute; left: -2.25rem; top: 1.6rem; width: 1.1rem; height: 1.1rem; margin-left: -.05rem; border-radius: 50%; background: var(--paper); border: 2px solid var(--line-2); transition: border-color .4s, box-shadow .4s, background .4s; }
.job.is-lit .job-dot { border-color: var(--copper); background: var(--copper); box-shadow: 0 0 0 4px var(--copper-soft), 0 0 16px var(--copper); }
.job-when { padding-top: 1.5rem; font: 500 .82rem/1.5 var(--f-mono); color: var(--muted); font-variant-numeric: tabular-nums; }
.job-when .now { display: table; margin-top: .55rem; font-size: .68rem; padding: .3rem .5rem; border-radius: 999px; background: var(--copper-soft); color: var(--copper); letter-spacing: .08em; text-transform: uppercase; border: 1px solid color-mix(in srgb, var(--copper) 35%, transparent); }
.job-card { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: clamp(1.3rem, 3vw, 1.9rem); transition: transform .35s var(--ease); }
.job-card:hover { transform: translateX(4px); }
.job h3 { font-size: 1.3rem; font-weight: 600; }
.job .org { margin-top: .35rem; color: var(--copper); font-weight: 500; font-size: .97rem; }
.job ul { margin: 1rem 0 0; padding-left: 1.1rem; display: grid; gap: .55rem; color: color-mix(in srgb, var(--ink) 88%, var(--muted)); font-size: .97rem; }
.job li::marker { color: var(--copper); }
.job .sub { margin-top: 1.25rem; font: 600 .95rem/1.4 var(--f-display); }
.job .sub span { font-weight: 400; color: var(--muted); }
.job .sub + ul { margin-top: .5rem; }
@media (max-width: 760px) { .job { grid-template-columns: 1fr; gap: .4rem; } .job-when { padding-top: 0; } .job-dot { top: .15rem; } .job-when .now { display: inline-block; margin: 0 0 0 .5rem; } }

/* ============ Education + skills ============ */
.two-col { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.3fr); gap: 1.25rem; align-items: start; }
@media (max-width: 920px) { .two-col { grid-template-columns: 1fr; } }
.edu { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: clamp(1.4rem, 3vw, 2rem); display: grid; gap: 1.4rem; align-content: start; }
.edu-top { display: flex; gap: 1rem; align-items: center; }
.edu-crest { width: 3.2rem; height: 3.2rem; flex: none; border-radius: 12px; display: grid; place-items: center; font: 700 1.4rem/1 var(--f-display); color: #fff; background: linear-gradient(135deg, #4F2683, #2D1452); box-shadow: 0 8px 24px -10px #4F2683; }
.edu h3 { font-size: 1.35rem; }
.edu-top p { color: var(--muted); font-size: .92rem; margin-top: .25rem; }
.gauges { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .8rem; }
.gauge { position: relative; display: grid; justify-items: center; padding: 1rem .5rem .9rem; border-radius: 14px; background: var(--panel-2); border: 1px solid var(--line); }
.gauge svg { width: 6.5rem; height: 6.5rem; transform: rotate(-90deg); }
.gauge circle { fill: none; stroke-width: 9; }
.g-bg { stroke: var(--line); }
.g-fg { stroke: var(--copper); stroke-linecap: round; stroke-dasharray: 100; stroke-dashoffset: 100; transition: stroke-dashoffset 1.6s var(--ease); filter: drop-shadow(0 0 4px color-mix(in srgb, var(--copper) 60%, transparent)); }
.gauge.is-in .g-fg, html:not(.js) .g-fg { stroke-dashoffset: calc(100 - var(--v)); }
.gauge:nth-child(2) .g-fg { stroke: var(--mask); filter: drop-shadow(0 0 4px color-mix(in srgb, var(--mask) 60%, transparent)); }
.gauge b { position: absolute; top: calc(1rem + 3.25rem); translate: 0 -50%; font: 700 1.25rem/1 var(--f-display); }
.gauge span { margin-top: .55rem; font: 500 .72rem/1 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.edu dl { display: grid; grid-template-columns: auto 1fr; gap: .6rem 1.25rem; margin: 0; font-size: .93rem; }
.edu dt { color: var(--muted); }
.edu dd { margin: 0; font-weight: 600; }
.badge { display: inline-flex; align-items: center; gap: .5rem; font: 600 .82rem/1 var(--f-body); padding: .6rem .85rem; border-radius: 999px; background: var(--copper-soft); color: var(--copper); justify-self: start; border: 1px solid color-mix(in srgb, var(--copper) 35%, transparent); }
.badge svg { width: 1rem; height: 1rem; }
.skills { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; }
.skill-group { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 1.35rem; }
.skill-group:last-child { grid-column: 1 / -1; }
.skill-group h3 { font: 600 .76rem/1.3 var(--f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink); margin-bottom: .9rem; display: flex; align-items: center; gap: .6rem; }
.skill-group h3 i { font-style: normal; width: 1.8rem; height: 1.8rem; display: grid; place-items: center; border-radius: 8px; background: var(--copper-soft); color: var(--copper); font-size: .8rem; letter-spacing: 0; }
@media (max-width: 600px) { .skills { grid-template-columns: 1fr; } }
.chips { display: flex; flex-wrap: wrap; gap: .45rem; list-style: none; margin: 0; padding: 0; }
.chips li { padding: .42rem .75rem; border: 1px solid var(--line-2); border-radius: 999px; background: var(--panel-2); font-size: .86rem; transition: border-color .2s, color .2s, transform .25s var(--ease), background .2s; cursor: default; }
.chips li:hover { border-color: var(--copper); color: var(--copper); transform: translateY(-2px); background: var(--copper-soft); }

/* ============ Contact ============ */
.contact { padding-top: 0; }
.contact-card {
  position: relative; overflow: hidden; border-radius: 24px; padding: clamp(1.75rem, 5vw, 3.5rem);
  background: radial-gradient(ellipse at 0% 0%, rgba(240,138,75,.16), transparent 50%), radial-gradient(ellipse at 100% 100%, rgba(127,176,255,.13), transparent 50%), var(--panel);
  border: 1px solid var(--line-2);
}
.contact-card::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(var(--grid-dot) 1px, transparent 1px), linear-gradient(90deg, var(--grid-dot) 1px, transparent 1px); background-size: 32px 32px; pointer-events: none; -webkit-mask: radial-gradient(ellipse at 30% 30%, #000, transparent 70%); mask: radial-gradient(ellipse at 30% 30%, #000, transparent 70%); }
.contact-grid { position: relative; display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.contact h2 { font-size: clamp(2.3rem, 6vw, 4.2rem); font-weight: 700; letter-spacing: -.04em; margin-top: .9rem; }
.contact p.lead { margin-top: 1.1rem; max-width: 32rem; color: var(--muted); font-size: 1.08rem; }
.contact .btns { margin-top: 2rem; }
.contact-list { list-style: none; margin: 0; padding: 0; display: grid; }
.contact-list li { display: grid; grid-template-columns: 5.5rem minmax(0, 1fr); gap: 1rem; padding-block: 1rem; border-top: 1px solid var(--line-2); align-items: baseline; }
.contact-list li:last-child { border-bottom: 1px solid var(--line-2); }
.contact-list a { color: var(--ink); font-weight: 600; text-decoration: none; overflow-wrap: anywhere; background: linear-gradient(var(--copper), var(--copper)) 0 100% / 0 1.5px no-repeat; transition: background-size .35s var(--ease), color .2s; }
.contact-list a:hover { color: var(--copper); background-size: 100% 1.5px; }
.copy { margin-left: .6rem; font: 500 .7rem/1 var(--f-mono); padding: .32rem .5rem; border-radius: 6px; border: 1px solid var(--line-2); background: transparent; color: var(--muted); cursor: pointer; vertical-align: middle; transition: color .2s, border-color .2s; }
.copy:hover, .copy.is-done { border-color: var(--ok); color: var(--ok); }
@media (max-width: 820px) { .contact-grid { grid-template-columns: 1fr; } }

.site-foot { padding-block: 2rem; font-size: .85rem; color: var(--muted); }
.site-foot .wrap { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.site-foot a { text-decoration: none; }

.to-top { position: fixed; z-index: 90; right: 1.25rem; bottom: 1.25rem; width: 3rem; height: 3rem; border-radius: 50%; display: grid; place-items: center; color: var(--ink); background: color-mix(in srgb, var(--panel) 85%, transparent); backdrop-filter: blur(8px); box-shadow: var(--shadow); opacity: 0; transform: translateY(1rem) scale(.9); pointer-events: none; transition: opacity .3s, transform .3s var(--ease), color .2s; }
.to-top.is-on { opacity: 1; transform: none; pointer-events: auto; }
.to-top:hover { color: var(--copper); }
.to-top svg { width: 100%; height: 100%; }
.to-top circle { fill: none; stroke-width: 2.5; }
.ring-bg { stroke: var(--line-2); }
.ring { stroke: var(--copper); stroke-dasharray: 100; stroke-dashoffset: calc(100 - var(--p, 0) * 100); transform: rotate(-90deg); transform-origin: center; stroke-linecap: round; }

/* ============ Project (datasheet) pages ============ */
.page-hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--line); margin-top: calc(var(--head-h) * -1); padding-top: var(--head-h); }
.page-hero::before { content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(ellipse 60% 80% at 10% 0%, rgba(240,138,75,.14), transparent 60%), radial-gradient(ellipse 50% 70% at 100% 20%, rgba(127,176,255,.1), transparent 60%); }
.page-hero .hero-canvas { opacity: .55; }
.crumbs { position: relative; padding-top: 2rem; font: 500 .8rem/1.4 var(--f-mono); color: var(--muted); }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--copper); }
.ds-head { position: relative; padding-block: 1.5rem clamp(2.5rem, 5vw, 3.5rem); display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: clamp(1.5rem, 4vw, 3.5rem); align-items: end; }
.ds-head h1 { font-size: clamp(2.2rem, 5.5vw, 4rem); font-weight: 700; letter-spacing: -.04em; margin-top: .9rem; }
.ds-head .lede { margin-top: 1.2rem; font-size: 1.13rem; color: var(--muted); max-width: 40rem; }
.ds-role { background: color-mix(in srgb, var(--panel) 80%, transparent); border: 1px solid var(--line-2); border-radius: 16px; padding: 1.25rem; backdrop-filter: blur(6px); position: relative; }
.ds-role::before { content: ""; position: absolute; left: 0; top: 1.25rem; bottom: 1.25rem; width: 3px; border-radius: 0 3px 3px 0; background: var(--grad); }
.ds-role b { display: block; font: 600 1.05rem/1.4 var(--f-display); margin-top: .4rem; }
@media (max-width: 820px) { .ds-head { grid-template-columns: 1fr; align-items: start; } }

.ds-hero { margin-block: clamp(2.5rem, 5vw, 3.5rem) clamp(2.5rem, 6vw, 4rem); }
.figure { margin: 0; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: .6rem; transition: border-color .3s, box-shadow .3s; }
.figure:hover { border-color: var(--line-2); box-shadow: var(--shadow); }
.figure .media { border-radius: 9px; overflow: hidden; background: var(--panel-2); display: grid; place-items: center; }
.figure .media.dark { background: #05080D; }
.figure .media img { transition: transform .7s var(--ease); }
button.zoom:hover .media img { transform: scale(1.03); }
.figure .media svg { width: 100%; height: auto; display: block; padding: .5rem; }
.figure figcaption { padding: .75rem .4rem .25rem; font-size: .88rem; color: var(--muted); display: flex; gap: .65rem; }
.figure figcaption b { font: 600 .74rem/1.65 var(--f-mono); color: var(--copper); flex: none; }
button.zoom { all: unset; cursor: zoom-in; display: block; width: 100%; position: relative; }
button.zoom::after { content: "⤢"; position: absolute; top: .7rem; right: .7rem; width: 2rem; height: 2rem; display: grid; place-items: center; border-radius: 8px; background: rgba(5,8,13,.6); color: #fff; font-size: 1rem; opacity: 0; transform: scale(.85); transition: opacity .25s, transform .25s var(--ease); backdrop-filter: blur(4px); }
button.zoom:hover::after, button.zoom:focus-visible::after { opacity: 1; transform: none; }
button.zoom:focus-visible { outline: 2px solid var(--copper); outline-offset: 2px; border-radius: 9px; }

.ds-body { display: grid; grid-template-columns: minmax(0, 1fr) 20rem; gap: clamp(2rem, 5vw, 4.5rem); padding-bottom: clamp(3rem, 7vw, 5rem); align-items: start; }
@media (max-width: 920px) { .ds-body { grid-template-columns: 1fr; } .ds-aside { order: -1; } }
.ds-aside { position: sticky; top: calc(var(--head-h) + 1.25rem); display: grid; gap: 1rem; }
@media (max-width: 920px) { .ds-aside { position: static; } }
.ds-aside .btn { justify-content: center; }
.spec { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.spec h2 { font: 600 .74rem/1 var(--f-mono); letter-spacing: .1em; text-transform: uppercase; padding: 1rem 1.1rem; border-bottom: 1px solid var(--line); background: var(--copper-soft); color: var(--copper); display: flex; align-items: center; gap: .55rem; }
.spec h2::before { content: ""; width: .5rem; height: .5rem; border-radius: 50%; background: var(--copper); box-shadow: 0 0 8px var(--copper); }
.spec dl { margin: 0; }
.spec .row { display: grid; grid-template-columns: 6.5rem minmax(0, 1fr); gap: .75rem; padding: .75rem 1.1rem; border-bottom: 1px solid var(--line); font-size: .88rem; transition: background .2s; }
.spec .row:hover { background: var(--panel-2); }
.spec .row:last-child { border-bottom: 0; }
.spec dt { color: var(--muted); font: 500 .74rem/1.6 var(--f-mono); text-transform: uppercase; letter-spacing: .05em; }
.spec dd { margin: 0; font-weight: 500; overflow-wrap: anywhere; }

.prose { display: grid; gap: clamp(2.5rem, 5vw, 3.5rem); max-width: 44rem; }
.prose section { display: grid; gap: .95rem; }
.prose h2 { font-size: clamp(1.45rem, 3vw, 1.95rem); font-weight: 600; letter-spacing: -.025em; }
.prose h2 small { display: flex; align-items: center; gap: .6rem; font: 500 .74rem/1 var(--f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--copper); margin-bottom: .75rem; }
.prose h2 small::before { content: ""; width: 1.4rem; height: 1px; background: var(--copper); }
.prose p, .prose li { color: color-mix(in srgb, var(--ink) 88%, var(--muted)); }
.prose ul { margin: 0; padding-left: 1.15rem; display: grid; gap: .6rem; }
.prose li::marker { color: var(--copper); }
.prose strong { font-weight: 600; color: var(--ink); }

.prose code { font: 500 .86em/1 var(--f-mono); padding: .18em .4em; border-radius: 5px; background: var(--copper-soft); color: var(--copper); }

/* Code listing (project pages) */
.code-block { margin: .4rem 0 0; background: #05080D; border: 1px solid var(--line-2); border-radius: 14px; overflow: hidden; position: relative; }
.code-head { display: flex; align-items: center; gap: .75rem; padding: .6rem .8rem; background: #0B111B; border-bottom: 1px solid #1C2738; }
.code-dots { display: flex; gap: .35rem; }
.code-dots i { width: .62rem; height: .62rem; border-radius: 50%; background: #26344A; }
.code-dots i:first-child { background: #F08A4B; }
.code-name { font: 500 .8rem/1 var(--f-mono); color: #C9D3E0; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.code-actions { margin-left: auto; display: flex; gap: .4rem; flex: none; }
.code-btn { font: 500 .72rem/1 var(--f-mono); padding: .45rem .6rem; border-radius: 7px; border: 1px solid #26344A; background: transparent; color: #8C9AAE; cursor: pointer; text-decoration: none; transition: color .2s, border-color .2s; }
.code-btn:hover { color: #F08A4B; border-color: #F08A4B; }
.code-btn.is-done { color: #3DDC97; border-color: #3DDC97; }
.code-body { position: relative; max-height: 24rem; overflow: hidden; transition: max-height .5s var(--ease); }
.code-block.is-open .code-body { max-height: none; }
.code-body::after { content: ""; position: absolute; inset: auto 0 0; height: 6rem; background: linear-gradient(transparent, #05080D); pointer-events: none; transition: opacity .3s; }
.code-block.is-open .code-body::after { opacity: 0; }
.code-block pre { margin: 0; padding: 1rem 0; overflow-x: auto; font: 400 .8rem/1.65 var(--f-mono); color: #D6DEEA; tab-size: 4; }
.code-block code { display: block; min-width: max-content; counter-reset: ln; font: inherit; color: inherit; background: none; padding: 0; border-radius: 0; }
.code-block .line { display: block; padding: 0 1.1rem 0 0; }
.code-block .line::before { counter-increment: ln; content: counter(ln); display: inline-block; width: 3.2rem; padding-right: 1rem; text-align: right; color: #3A4A62; user-select: none; }
.code-block .line:hover { background: rgba(240,138,75,.06); }
.tok-c { color: #6B7B93; font-style: italic; }
.tok-s { color: #9FD08A; }
.tok-k { color: #F08A4B; }
.tok-b { color: #7FB0FF; }
.tok-n { color: #FFB37A; }
.tok-f { color: #E8C17A; }
.code-more { display: block; width: 100%; padding: .75rem; border: 0; border-top: 1px solid #1C2738; background: #0B111B; color: #F08A4B; font: 600 .82rem/1 var(--f-body); cursor: pointer; }
.code-more:hover { background: #101826; }
.code-block figcaption { padding: .75rem 1rem .8rem; font-size: .85rem; color: #8C9AAE; display: flex; gap: .65rem; border-top: 1px solid #1C2738; }
.code-block figcaption b { font: 600 .74rem/1.65 var(--f-mono); color: #F08A4B; flex: none; }
@media (max-width: 520px) { .code-head .code-name { font-size: .72rem; } .code-block .line::before { width: 2.4rem; padding-right: .7rem; } }

.results { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .8rem; }
.result { position: relative; overflow: hidden; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 1.2rem 1.1rem; min-width: 0; transition: transform .3s var(--ease), border-color .3s; }
.result::before { content: ""; position: absolute; inset: 0 0 auto; height: 2px; background: var(--grad); }
.result:hover { transform: translateY(-3px); border-color: var(--line-2); }
.result b { display: block; font: 700 clamp(1.6rem, 3.5vw, 2.15rem)/1 var(--f-display); color: var(--copper); letter-spacing: -.03em; }
.result span { display: block; margin-top: .5rem; font-size: .84rem; line-height: 1.4; color: var(--muted); }
@media (max-width: 520px) { .results { grid-template-columns: 1fr; } }

.note { background: var(--mask-soft); border: 1px dashed color-mix(in srgb, var(--mask) 40%, transparent); border-radius: 14px; padding: 1.1rem 1.2rem; font-size: .95rem; }
.note b { color: var(--mask); }
.gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
@media (max-width: 640px) { .gallery { grid-template-columns: 1fr; } }
.gallery .media { aspect-ratio: 4 / 3; max-width: 100%; }
.gallery .media img { width: 100%; height: 100%; object-fit: contain; }
.videos { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; align-items: start; }
.figure video { display: block; width: auto; max-width: 100%; height: auto; max-height: min(34rem, 75vh); margin-inline: auto; background: #05080D; }
@media (max-width: 520px) { .videos { grid-template-columns: 1fr; } }

.pager { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; padding-bottom: clamp(3rem, 7vw, 5rem); }
.pager a { display: grid; gap: .4rem; padding: 1.4rem; border: 1px solid var(--line); border-radius: 16px; background: var(--panel); text-decoration: none; min-width: 0; transition: transform .3s var(--ease), border-color .3s; }
.pager a:hover { color: inherit; border-color: var(--copper); transform: translateY(-3px); }
.pager a b { font: 600 1.15rem/1.3 var(--f-display); transition: color .2s; }
.pager a:hover b { color: var(--copper); }
.pager a.next { text-align: right; }
@media (max-width: 560px) { .pager { grid-template-columns: 1fr; } .pager a.next { text-align: left; } }

/* ============ SVG diagram tokens ============ */
.dg-line { stroke: var(--ink); fill: none; stroke-width: 2; }
.dg-cu { stroke: var(--copper); fill: none; stroke-width: 2.5; filter: drop-shadow(0 0 3px color-mix(in srgb, var(--copper) 55%, transparent)); }
.dg-mask { stroke: var(--mask); fill: none; stroke-width: 2; }
.dg-box { fill: var(--panel); stroke: var(--line-2); stroke-width: 1.5; }
.dg-box-cu { fill: var(--copper-soft); stroke: var(--copper); stroke-width: 1.5; }
.dg-box-mask { fill: var(--mask-soft); stroke: var(--mask); stroke-width: 1.5; }
.dg-t { fill: var(--ink); font: 600 13px var(--f-display); }
.dg-code { font: 500 12px var(--f-mono); }
.dg-s { fill: var(--muted); font: 500 10.5px var(--f-mono); }
.dg-cu-t { fill: var(--copper); font: 600 11px var(--f-mono); }
.dg-dot { fill: var(--copper); }
.dg-grid { stroke: var(--line-2); stroke-width: 1; stroke-dasharray: 3 4; }
.dg-bar { fill: var(--line-2); }
.dg-bar-cu { fill: var(--copper); }
.dg-on-cu { fill: #0A0F18; }
.dg-big { fill: var(--copper); font: 700 30px var(--f-display); }
:root[data-theme="light"] .dg-on-cu { fill: #fff; }
/* Wire draw-on animation (JS sets --len) */
.js .draw .dg-cu, .js .draw .dg-mask, .js .draw .dg-line { stroke-dasharray: var(--len, 0); stroke-dashoffset: var(--len, 0); transition: stroke-dashoffset 1.4s var(--ease); }
.js .draw.is-in .dg-cu, .js .draw.is-in .dg-mask, .js .draw.is-in .dg-line { stroke-dashoffset: 0; }

/* ============ Lightbox ============ */
.lightbox { position: fixed; inset: 0; z-index: 300; background: rgba(4, 6, 10, .9); backdrop-filter: blur(10px); display: grid; place-items: center; padding: 1rem; animation: fade .25s both; }
.lightbox > div { animation: zoomIn .35s var(--ease) both; max-width: min(92vw, 1400px); }
.lightbox img { max-height: 84vh; width: auto; max-width: 100%; border-radius: 10px; margin-inline: auto; }
.lightbox p { color: #E8EDF4; text-align: center; margin-top: .9rem; font-size: .9rem; max-width: 60ch; margin-inline: auto; }
.lightbox button { position: absolute; top: 1rem; right: 1rem; background: #E8EDF4; color: #070B12; border: 0; border-radius: 999px; padding: .6rem 1rem; font: 600 .88rem var(--f-body); cursor: pointer; }
@keyframes fade { from { opacity: 0; } }
@keyframes zoomIn { from { opacity: 0; transform: scale(.94); } }

/* ============ Reveal on scroll ============ */
.js [data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity .8s var(--ease), transform .8s var(--ease); transition-delay: var(--d, 0s); }
.js [data-reveal].is-in { opacity: 1; transform: none; }
.js .proj[data-reveal].is-in { transition: opacity .8s var(--ease), transform .45s var(--ease), border-color .3s, box-shadow .4s; transition-delay: var(--d, 0s), 0s, 0s, 0s; }

/* Hero load-in */
.js .hero-copy > * { animation: rise .9s var(--ease) both; }
.js .hero-copy > :nth-child(1) { animation-delay: .05s; }
.js .hero-copy > :nth-child(2) { animation-delay: .15s; }
.js .hero-copy > :nth-child(4) { animation-delay: .7s; }
.js .hero-copy > :nth-child(5) { animation-delay: .8s; }
.js .hero-copy > :nth-child(6) { animation-delay: .9s; }
.js .hero-copy > :nth-child(7) { animation-delay: 1s; }
.js .hero-name { animation: none !important; }
.js .hero-name .ch { opacity: 0; transform: translateY(.5em) rotate(6deg); animation: charIn .8s var(--ease) both; animation-delay: calc(.25s + var(--i) * .045s); }
@keyframes charIn { to { opacity: 1; transform: none; } }
.js .hero-visual { animation: rise 1.1s var(--ease) .45s both; }
@keyframes rise { from { opacity: 0; transform: translateY(24px); } }

/* ============ Reduced motion ============ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .js [data-reveal] { opacity: 1; transform: none; }
  .marquee-track { animation: none; }
}