/* ============================================================
   SUDHEER UPPALA — v2 design system (shared across all pages)
   Dark editorial theme · serif display + Inter · lime accent
   ============================================================ */
:root{
  --bg:#0c0c0e;
  --bg-soft:#131317;
  --card:#18181d;
  --ink:#f4f2ec;
  --muted:#9b98a3;
  --line:#26262e;
  --accent:#e8ff47;
  --violet:#8b7cf6;
  --teal:#3ddad7;
  --coral:#ff7a5c;
  --font-sans:'Inter',system-ui,sans-serif;
  --font-serif:'Instrument Serif',Georgia,serif;
  --container:1120px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:auto}
body{background:var(--bg);color:var(--ink);font-family:var(--font-sans);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- Global header ---------- */
.gnav{position:fixed;inset:0 0 auto 0;z-index:100;height:72px;display:flex;align-items:center;
  background:linear-gradient(rgba(12,12,14,.92),rgba(12,12,14,.85));backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.05)}
.gnav__inner{width:100%;max-width:1280px;margin:0 auto;padding:0 32px;display:flex;align-items:center;justify-content:space-between}
.gnav a.gnav__logo{display:grid;place-items:center;width:46px;height:46px;border-radius:50%;transition:transform .3s ease}
.gnav a.gnav__logo:hover{transform:rotate(20deg) scale(1.06)}
.gnav__links{display:flex;align-items:center;gap:34px}
.gnav__link{font-size:14px;font-weight:500;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);transition:color .2s;position:relative}
.gnav__link:hover,.gnav__link.is-active{color:var(--ink)}
.gnav__link::after{content:"";position:absolute;left:0;right:100%;bottom:-6px;height:2px;background:var(--accent);transition:right .3s ease}
.gnav__link:hover::after,.gnav__link.is-active::after{right:0}
.gnav__mail{display:inline-flex;align-items:center;gap:10px;padding:11px 22px;border-radius:999px;background:var(--accent);color:#101010;font-weight:700;font-size:14px;letter-spacing:.02em;transition:transform .25s,box-shadow .25s}
.gnav__mail:hover{transform:translateY(-2px);box-shadow:0 10px 34px rgba(232,255,71,.3)}
.gnav__mail svg{width:16px;height:16px}
@media(max-width:760px){.gnav__links{gap:18px}.gnav__mail span{display:none}.gnav__mail{padding:11px}}

/* ---------- Global footer ---------- */
.gfooter{border-top:1px solid var(--line);padding:90px 0 60px;text-align:center;background:var(--bg-soft)}
.gfooter__thanks{font-family:var(--font-serif);font-style:italic;font-size:clamp(26px,4vw,44px);line-height:1.25;max-width:720px;margin:0 auto 18px}
.gfooter__thanks em{font-style:normal;color:var(--accent)}
.gfooter__sub{color:var(--muted);font-size:15px;margin-bottom:44px}
.gfooter__meta{display:flex;justify-content:center;gap:26px;align-items:center;color:var(--muted);font-size:13px}
.gfooter__meta a:hover{color:var(--ink)}
.gfooter__mark{width:34px;height:34px;margin:0 auto 26px;opacity:.9}

/* ---------- Full-page scroll sections (sticky stacked slides) ----------
   Each section is exactly one viewport tall and position:sticky, so the
   slides physically stack in normal document order. Scrolling down, each
   new slide slides up and covers the pinned one beneath it ("one scroll
   per slide" cover effect). One wheel/trackpad gesture moves exactly one
   slide in either direction; see initScrollEngine() in js/v2.js for the
   non-blocking stepper (native scroll-snap is deliberately not used —
   with sticky-stacked sections Chromium computes snap points from the
   un-stuck layout offsets, which freezes upward scrolling). */
.pagescroll{
  height:100vh;height:100dvh;
  position:sticky;top:-1px;                 /* stick while the next slide covers it */
  overflow:hidden;display:flex;align-items:center;
  background:var(--bg);                     /* opaque, so upper slides are hidden */
  border-bottom:1px solid rgba(255,255,255,.06);
}
/* Sticky-slide pages only (portfolio / experience): edge fade.
   NOTE: scroll-snap is intentionally NOT used here. With a stack of
   position:sticky full-height slides, native scroll-snap points are
   computed from the elements' un-stuck layout positions, which makes
   upward wheel/trackpad scrolling freeze on the pinned slide in
   Chromium (verified with headless Chrome). The deterministic
   one-slide-per-gesture behaviour lives in js/v2.js instead — see
   initScrollEngine(). Without JS the plain sticky-stack scrolling
   still works naturally in both directions. */
html.stack .pagescroll::after{content:"";position:absolute;inset:auto 0 0 0;height:72px;z-index:3;pointer-events:none;
  background:linear-gradient(transparent,var(--bg))}
.pagescroll__inner{width:100%;max-width:1280px;margin:0 auto;padding:96px 32px 32px;position:relative;z-index:2}
@media(max-width:760px){.pagescroll__inner{padding:88px 20px 20px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto;scroll-snap-type:none}}

/* right-side dot rail */
.rail{position:fixed;right:26px;top:50%;transform:translateY(-50%);z-index:90;display:flex;flex-direction:column;gap:16px}
.rail__dot{width:11px;height:11px;border-radius:50%;border:1.5px solid rgba(244,242,236,.35);background:transparent;cursor:pointer;transition:.3s;position:relative;padding:0}
.rail__dot:hover{border-color:var(--ink)}
.rail__dot.is-active{background:var(--accent);border-color:var(--accent);box-shadow:0 0 0 5px rgba(232,255,71,.15)}
.rail__dot .rail__tip{position:absolute;right:24px;top:50%;transform:translateY(-50%) translateX(6px);white-space:nowrap;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);opacity:0;pointer-events:none;transition:.25s;background:rgba(12,12,14,.85);padding:4px 10px;border-radius:6px;border:1px solid var(--line)}
.rail__dot:hover .rail__tip,.rail__dot.is-active .rail__tip{opacity:1;transform:translateY(-50%) translateX(0)}
@media(max-width:760px){.rail{right:12px;gap:13px}.rail__dot .rail__tip{display:none}}

/* reveal animation inside slides */
.rv{opacity:0;transform:translateY(34px);transition:opacity .8s ease,transform .8s cubic-bezier(.2,.7,.2,1)}
.rv.in{opacity:1;transform:none}
.rv.d1{transition-delay:.12s}.rv.d2{transition-delay:.24s}.rv.d3{transition-delay:.36s}.rv.d4{transition-delay:.48s}

/* eyebrow / kicker */
.kicker{display:inline-flex;align-items:center;gap:10px;font-size:12px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;color:var(--accent);margin-bottom:22px}
.kicker::before{content:"";width:34px;height:1px;background:var(--accent)}

/* scroll hint */
.scrollhint{position:absolute;left:50%;bottom:30px;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:10px;color:var(--muted);font-size:11px;letter-spacing:.28em;text-transform:uppercase;z-index:5}
.scrollhint i{display:block;width:1.5px;height:52px;background:linear-gradient(var(--accent),transparent);animation:drip 2.2s ease-in-out infinite}
@keyframes drip{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}55%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ---------- Landing hero ---------- */
.hero-name{font-family:var(--font-serif);font-weight:400;font-size:clamp(56px,11vw,150px);line-height:.98;letter-spacing:-.02em}
.hero-name .ln2{display:block;color:var(--accent);font-style:italic}
.hero-role{margin-top:30px;font-size:clamp(17px,2.2vw,22px);color:var(--muted);max-width:640px}
.hero-role strong{color:var(--ink);font-weight:600}
.hero-orbit{position:absolute;right:-140px;top:50%;transform:translateY(-50%);width:640px;height:640px;opacity:.9;pointer-events:none}
/* ---- animated planets (pure CSS, GPU-friendly transforms) ---- */
.hero-orbit .orbit-path,.hero-orbit .planet,.hero-orbit .sun-spin,.hero-orbit .sun-glow,.hero-orbit .moon-orbit,.hero-orbit .comet-spin,.hero-orbit .comet-tilt{transform-box:view-box;transform-origin:320px 320px}
.hero-orbit .planet--yellow,.hero-orbit .moon-orbit,.hero-orbit .comet-spin{transform-origin:620px 320px}
.hero-orbit .orbit-path--a{transform:rotate(-20deg)}
.hero-orbit .orbit-path--b{transform:rotate(46deg)}
@keyframes orbitSpinA{from{transform:rotate(-20deg)}to{transform:rotate(340deg)}}
@keyframes orbitSpinB{from{transform:rotate(46deg)}to{transform:rotate(406deg)}}
@keyframes spinSlow{to{transform:rotate(360deg)}}
@keyframes breathe{0%,100%{transform:scale(1);opacity:.9}50%{transform:scale(1.07);opacity:1}}
@keyframes twinkle{0%,100%{opacity:.85}50%{opacity:.4}}
.hero-orbit .planet--yellow{animation:orbitSpinA 26s linear infinite}
.hero-orbit .planet--violet{animation:orbitSpinB 38s linear infinite}
.hero-orbit .planet--teal{animation:spinSlow 46s linear infinite reverse}
.hero-orbit .sun-spin{animation:spinSlow 14s linear infinite}
.hero-orbit .sun-glow{animation:breathe 6s ease-in-out infinite}
.hero-orbit .moon-orbit{animation:spinSlow 5s linear infinite}
.hero-orbit .comet-spin{animation:spinSlow 9s cubic-bezier(.45,0,.55,1) infinite}
.hero-orbit .comet-tilt{transform:rotate(14deg)}
.hero-orbit .comet path{animation:twinkle 9s ease-in-out infinite}
@media(prefers-reduced-motion:reduce){.hero-orbit *{animation:none!important}}
@media(max-width:1100px){.hero-orbit{right:-260px;width:520px;opacity:.5}}
@media(max-width:760px){.hero-orbit{right:-220px;width:420px;opacity:.35}}
.hero-cta{margin-top:46px;display:flex;gap:18px;flex-wrap:wrap}
.hero-chip{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:8px 16px}
.hero-chip b{color:var(--ink);font-weight:600}

/* ---------- Experience slides ---------- */
.xp-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:64px;align-items:center}
@media(max-width:960px){.xp-grid{grid-template-columns:1fr;gap:34px}.xp-art{display:none}}
.xp-num{font-family:var(--font-serif);font-size:15px;color:var(--muted);letter-spacing:.2em;margin-bottom:14px}
.xp-co{font-family:var(--font-serif);font-size:clamp(40px,6.5vw,84px);line-height:1;letter-spacing:-.01em}
.xp-meta{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0 26px}
.xp-pill{font-size:13px;font-weight:600;letter-spacing:.04em;padding:8px 16px;border-radius:999px;border:1px solid var(--line);color:var(--muted)}
.xp-pill.years{color:#101010;background:var(--c,var(--accent));border-color:transparent}
.xp-pill.role{color:var(--c,var(--accent));border-color:currentColor}
.xp-resp{list-style:none;display:grid;gap:13px;max-width:560px}
.xp-resp li{position:relative;padding-left:26px;color:var(--muted);font-size:15.5px}
.xp-resp li::before{content:"";position:absolute;left:0;top:10px;width:9px;height:9px;border-radius:50%;border:2px solid var(--c,var(--accent))}
.xp-stat{margin-top:30px;display:flex;align-items:baseline;gap:14px}
.xp-stat b{font-family:var(--font-serif);font-size:44px;color:var(--c,var(--accent));line-height:1}
.xp-stat span{font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.xp-art{aspect-ratio:1/1;position:relative;display:grid;place-items:center}
.xp-art svg{width:100%;height:100%}
.xp-bgword{position:absolute;left:0;bottom:-8%;font-family:var(--font-serif);font-size:clamp(120px,22vw,300px);line-height:.8;color:rgba(255,255,255,.028);letter-spacing:-.03em;pointer-events:none;user-select:none;white-space:nowrap}

/* ---------- Portfolio slides ---------- */
.pf-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:60px;align-items:center}
@media(max-width:960px){.pf-grid{grid-template-columns:1fr;gap:30px}}
.pf-index{font-size:12px;letter-spacing:.24em;color:var(--muted);text-transform:uppercase;margin-bottom:16px}
.pf-title{font-family:var(--font-serif);font-size:clamp(36px,5.4vw,68px);line-height:1.02;letter-spacing:-.01em}
.pf-tag{margin:16px 0 18px;font-size:15px;color:var(--c,var(--accent));font-weight:600;letter-spacing:.04em}
.pf-desc{color:var(--muted);max-width:520px;font-size:16px}
.pf-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.pf-tags span{font-size:12px;color:var(--muted);border:1px solid var(--line);padding:6px 14px;border-radius:999px}
.pf-actions{margin-top:34px;display:flex;gap:16px;align-items:center;flex-wrap:wrap}
.btn{display:inline-block;padding:14px 28px;border-radius:999px;font-size:15px;font-weight:600;transition:.25s;border:1px solid transparent;cursor:pointer}
.btn--primary{background:var(--c,var(--accent));color:#101010}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 10px 34px rgba(232,255,71,.22)}
.btn--ghost{border-color:var(--line);color:var(--ink)}
.btn--ghost:hover{border-color:var(--ink)}
.pf-art{aspect-ratio:4/3;border-radius:20px;border:1px solid var(--line);position:relative;overflow:hidden;background:
  radial-gradient(600px 300px at 80% -10%, color-mix(in srgb, var(--c,#e8ff47) 14%, transparent), transparent 60%),
  linear-gradient(160deg,var(--bg-soft),#101014)}
.pf-art svg.mock{position:absolute;inset:8% 6%;width:88%;height:84%;filter:drop-shadow(0 24px 50px rgba(0,0,0,.5))}
.pf-art:hover svg.mock{transform:translateY(-6px)}
.pf-art svg.mock{transition:transform .5s cubic-bezier(.2,.7,.2,1)}
.pf-count{position:absolute;right:18px;bottom:12px;font-family:var(--font-serif);font-size:64px;color:rgba(255,255,255,.07)}

/* case-study "coming soon" state */
.pf-soon{font-size:13px;color:var(--muted);letter-spacing:.06em}
.pf-soon b{color:var(--c,var(--accent))}

/* reduced motion */
@media(prefers-reduced-motion:reduce){.rv{transition:none;opacity:1;transform:none}.scrollhint i{animation:none}}