/* =========================================================================
   ritesh 👋  —  shared design system
   playful / interactive · rounded · multi-accent · light + dark
   ========================================================================= */

:root{
  --paper:#FFF8F2; --paper-2:#FFEEE3; --card:#FFFFFF;
  --ink:#2A2036; --ink-soft:#6E6079; --ink-faint:#A093AC; --rule:#F1E3D7;
  --coral:#FF6B5E; --grape:#7A5AF8; --teal:#12B39A; --sun:#FF9F1C; --sky:#2E9CFF; --pink:#FF7EB6;
  --primary:#FF6B5E; --page:#FF6B5E;
  --shadow:24px 24px 60px rgba(120,90,60,.14); --shadow-sm:0 10px 30px rgba(120,90,60,.12);
  --t:.45s cubic-bezier(.2,.8,.2,1); --maxw:1120px;
}
@media (prefers-color-scheme:dark){
  :root{
    --paper:#171125; --paper-2:#20182F; --card:#241A38;
    --ink:#F6EEFA; --ink-soft:#C6B9D4; --ink-faint:#8A7B9E; --rule:#33264A;
    --coral:#FF7D71; --grape:#9B82FF; --teal:#2FD3B9; --sun:#FFB43C; --sky:#5AB0FF; --pink:#FF93C4;
    --primary:#FF7D71; --page:#FF7D71;
    --shadow:24px 24px 70px rgba(0,0,0,.5); --shadow-sm:0 10px 30px rgba(0,0,0,.4);
  }
}
:root[data-theme="light"]{
  --paper:#FFF8F2; --paper-2:#FFEEE3; --card:#FFFFFF; --ink:#2A2036; --ink-soft:#6E6079; --ink-faint:#A093AC; --rule:#F1E3D7;
  --coral:#FF6B5E; --grape:#7A5AF8; --teal:#12B39A; --sun:#FF9F1C; --sky:#2E9CFF; --pink:#FF7EB6;
  --shadow:24px 24px 60px rgba(120,90,60,.14); --shadow-sm:0 10px 30px rgba(120,90,60,.12);
}
:root[data-theme="dark"]{
  --paper:#171125; --paper-2:#20182F; --card:#241A38; --ink:#F6EEFA; --ink-soft:#C6B9D4; --ink-faint:#8A7B9E; --rule:#33264A;
  --coral:#FF7D71; --grape:#9B82FF; --teal:#2FD3B9; --sun:#FFB43C; --sky:#5AB0FF; --pink:#FF93C4;
  --shadow:24px 24px 70px rgba(0,0,0,.5); --shadow-sm:0 10px 30px rgba(0,0,0,.4);
}

/* per-page identity: each page (except home) gets its own soft accent ground */
body.tint{background:color-mix(in srgb, var(--page) 13%, var(--paper))}
body.p-explorables{--page:var(--grape); --primary:var(--grape)}
body.p-about{--page:var(--teal); --primary:var(--teal)}
body.p-books{--page:var(--sky); --primary:var(--sky)}
body.p-talks{--page:var(--pink); --primary:var(--pink)}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto;scroll-snap-type:none!important}}
body{margin:0;background:var(--paper);color:var(--ink);
  font-family:"Nunito",system-ui,-apple-system,sans-serif;font-size:18px;line-height:1.6;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;transition:background var(--t),color var(--t)}
h1,h2,h3,.display{font-family:"Baloo 2",system-ui,sans-serif;font-weight:800;line-height:1.04;letter-spacing:-.01em;text-wrap:balance;margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 26px}
.eyebrow{font-family:"Baloo 2";font-weight:700;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--primary)}

/* ---- nav ---- */
nav{position:fixed;top:16px;left:0;right:0;z-index:60;display:flex;justify-content:center;pointer-events:none}
.nav-inner{pointer-events:auto;display:flex;align-items:center;gap:8px;background:color-mix(in srgb,var(--card) 82%,transparent);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--rule);
  border-radius:999px;padding:8px 8px 8px 20px;box-shadow:var(--shadow-sm);max-width:calc(100% - 32px)}
.brand{font-family:"Baloo 2";font-weight:800;font-size:20px;margin-right:8px;white-space:nowrap;letter-spacing:-.015em;display:inline-flex;align-items:center;gap:5px}
.brand .wv{display:inline-block;transform-origin:70% 70%;filter:drop-shadow(0 1px 3px color-mix(in srgb,var(--grape) 34%,transparent))}
.brand .bw,.foot .fb .bw{background:linear-gradient(92deg,var(--coral),var(--grape) 52%,var(--teal));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
.nav-links{display:flex;gap:2px}
.nav-links a{font-weight:700;font-size:15px;color:var(--ink-soft);padding:8px 14px;border-radius:999px;transition:all .2s}
.nav-links a:hover,.nav-links a.here{color:var(--ink);background:var(--paper-2)}
.nav-links a.here{color:var(--primary)}
.tgl{width:40px;height:40px;border-radius:999px;border:1px solid var(--rule);background:var(--paper);
  cursor:pointer;font-size:18px;display:grid;place-items:center;transition:all .25s;flex:none}
.tgl:hover{transform:rotate(-12deg) scale(1.05)}
@media(max-width:820px){.nav-links{display:none}}

/* ---- buttons ---- */
.btn{font-family:"Baloo 2";font-weight:700;font-size:17px;padding:15px 26px;border-radius:999px;cursor:pointer;
  border:2px solid transparent;transition:transform .18s,box-shadow .18s,background .2s,border-color .2s,color .2s;display:inline-flex;align-items:center;gap:9px}
.btn.solid{background:var(--primary);color:#fff;box-shadow:0 12px 26px color-mix(in srgb,var(--primary) 40%,transparent)}
.btn.solid:hover{transform:translateY(-3px) rotate(-1deg);box-shadow:0 18px 34px color-mix(in srgb,var(--primary) 46%,transparent)}
.btn.ghost{background:var(--card);color:var(--ink);border-color:var(--rule)}
.btn.ghost:hover{transform:translateY(-3px);border-color:var(--primary);color:var(--primary)}
.btn.sm{font-size:15px;padding:11px 20px}

/* ---- hero (home) ---- */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden}
#blobs{position:absolute;inset:0;width:100%;height:100%;z-index:0}
.hero-inner{position:relative;z-index:2;width:100%}
.greet{font-family:"Baloo 2";font-weight:700;font-size:clamp(20px,2.6vw,26px);color:var(--ink-soft);margin-bottom:6px}
.greet .wave{display:inline-block;transform-origin:70% 70%}
.hero h1{font-size:clamp(46px,9vw,104px);letter-spacing:-.03em}
.hero h1 .grad{background:linear-gradient(102deg,var(--coral),var(--grape) 45%,var(--sky));-webkit-background-clip:text;background-clip:text;color:transparent}
.lede{font-size:clamp(19px,2.4vw,25px);color:var(--ink-soft);max-width:620px;margin:24px 0 8px;font-weight:600}
.rot{color:var(--ink);font-weight:800;white-space:nowrap;border-bottom:3px solid var(--sun);padding-bottom:1px}
.cta-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.scrolldown{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:2;color:var(--ink-faint);font-weight:700;font-size:13px;letter-spacing:.14em;text-transform:uppercase;display:flex;flex-direction:column;align-items:center;gap:8px}
.scrolldown .d{width:10px;height:10px;border-radius:50%;background:var(--primary);animation:bob 1.4s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(9px)}}
@media (prefers-reduced-motion:reduce){.scrolldown .d{animation:none}}

/* ---- sections: each owns a full screen and snaps ---- */
main.snap{scroll-snap-type:y proximity}
section{position:relative}
main.snap section.wrap{min-height:100vh;display:flex;flex-direction:column;justify-content:center;padding-block:104px;scroll-snap-align:start}
.hero,main.snap footer{scroll-snap-align:start}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:40px;flex-wrap:wrap}
.sec-head h2{font-size:clamp(32px,5vw,52px)}
.sec-head p{color:var(--ink-soft);font-weight:600;margin:8px 0 0;max-width:520px}

/* ---- inner-page header ---- */
.pagehead{padding:150px 0 20px;position:relative;overflow:hidden}
.pagehead .wrap{position:relative;z-index:1}
.pagehead h1{font-size:clamp(44px,8vw,82px);letter-spacing:-.03em}
.pagehead h1 .grad{background:linear-gradient(100deg,var(--page),var(--sky));-webkit-background-clip:text;background-clip:text;color:transparent}
.pagehead .sub{font-size:clamp(18px,2.3vw,23px);color:var(--ink-soft);font-weight:600;max-width:640px;margin:18px 0 0}
.pdot{position:absolute;border-radius:50%;filter:blur(2px);opacity:.45;z-index:0}
.page-body{padding-bottom:80px}

/* ---- article cards ---- */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
@media(max-width:900px){.grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.grid{grid-template-columns:1fr}}
.card{position:relative;background:var(--card);border:1px solid var(--rule);border-radius:26px;overflow:hidden;
  box-shadow:var(--shadow-sm);cursor:pointer;transition:box-shadow .3s,opacity .3s;transform-style:preserve-3d;will-change:transform}
.card:hover{box-shadow:var(--shadow)}
.card.hide{display:none}
.card .thumb{height:172px;position:relative;overflow:hidden;display:grid;place-items:center;background:color-mix(in srgb,var(--ac) 14%,var(--card));border-bottom:1px solid var(--rule)}
.card .body{padding:20px 22px 24px}
.card .k{font-family:"Baloo 2";font-weight:700;font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--ac)}
.card h3{font-size:24px;margin:6px 0 8px}
.card p{color:var(--ink-soft);font-weight:600;font-size:15.5px;margin:0 0 16px;line-height:1.5}
.tags{display:flex;flex-wrap:wrap;gap:7px}
.tag{font-family:"Baloo 2";font-weight:700;font-size:12px;padding:4px 11px;border-radius:999px;background:color-mix(in srgb,var(--ac) 15%,transparent);color:var(--ac)}
.card .go{position:absolute;bottom:20px;right:22px;width:40px;height:40px;border-radius:999px;background:var(--ac);color:#fff;display:grid;place-items:center;font-size:20px;transform:translateX(6px);opacity:0;transition:all .25s}
.card:hover .go{transform:none;opacity:1}
.soon{opacity:.82}.soon .thumb{background:var(--paper-2)}
.ribbon{position:absolute;top:14px;right:-34px;transform:rotate(45deg);background:var(--ink);color:var(--paper);font-family:"Baloo 2";font-weight:700;font-size:11px;letter-spacing:.08em;padding:5px 40px;z-index:3}
.mini{transform:scale(1.04);transition:transform .4s}
.card:hover .mini{transform:scale(1.1) rotate(-1deg)}
.fib{background:var(--card);border:2px solid var(--ac);border-radius:14px;padding:12px 16px;font-family:"Baloo 2";font-weight:700;font-size:15px;box-shadow:var(--shadow-sm)}
.fib .cc{background:var(--ac);color:#fff;border-radius:8px;padding:1px 10px;margin-left:4px;display:inline-block}
.lights{display:flex;flex-direction:column;gap:9px;background:#241A38;padding:14px;border-radius:16px;box-shadow:var(--shadow-sm)}
.lights i{width:26px;height:26px;border-radius:50%;background:#3a2f4d;display:block}
.lights i.on-g{background:#2ecc8f;box-shadow:0 0 16px #2ecc8f}
.parts{display:flex;gap:7px}
.parts i{width:30px;height:40px;border-radius:9px;background:color-mix(in srgb,var(--ac) 18%,var(--card));border:2px solid color-mix(in srgb,var(--ac) 30%,transparent);display:block}
.parts i.lit{background:var(--ac);border-color:var(--ac);box-shadow:0 8px 18px color-mix(in srgb,var(--ac) 45%,transparent)}
.qmark{font-family:"Baloo 2";font-weight:800;font-size:56px;color:color-mix(in srgb,var(--ac) 40%,var(--ink-faint))}
/* --- marquee mini-previews --- */
.think{display:flex;gap:12px;align-items:center;padding:18px}
.think i{width:18px;height:18px;border-radius:50%;background:var(--ac);display:block;opacity:.3;animation:think 1.4s ease-in-out infinite}
.think i:nth-child(2){animation-delay:.18s}.think i:nth-child(3){animation-delay:.36s}
@keyframes think{0%,65%,100%{opacity:.3;transform:translateY(0)}32%{opacity:1;transform:translateY(-7px)}}
.prompt{display:flex;align-items:center;background:#241A38;color:#efe8fb;font-family:"Baloo 2";font-weight:700;font-size:15px;padding:12px 15px;border-radius:14px;box-shadow:var(--shadow-sm)}
.prompt .cur{width:9px;height:18px;background:var(--ac);display:inline-block;margin-left:5px;border-radius:2px;animation:blink 1.05s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.grc{display:flex;gap:9px}
.grc i{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;font-family:"Baloo 2";font-weight:800;font-size:20px;color:var(--ac);background:color-mix(in srgb,var(--ac) 16%,var(--card));border:2px solid color-mix(in srgb,var(--ac) 32%,transparent)}
.grc i.mid{background:var(--ac);color:#fff;border-color:var(--ac);box-shadow:0 8px 18px color-mix(in srgb,var(--ac) 45%,transparent)}
.tokens{display:flex;gap:6px;flex-wrap:wrap;justify-content:center;max-width:170px}
.tokens i{font-style:normal;font-family:"Baloo 2";font-weight:700;font-size:15px;padding:6px 10px;border-radius:9px;color:var(--ac);background:color-mix(in srgb,var(--ac) 15%,var(--card));border:1.5px solid color-mix(in srgb,var(--ac) 34%,transparent)}
@media(prefers-reduced-motion:reduce){.think i,.prompt .cur{animation:none}.think i{opacity:.72}}

/* ---- filters ---- */
.filters{display:flex;gap:10px;flex-wrap:wrap;padding:26px 0 40px}
.chip{font-family:"Baloo 2";font-weight:700;font-size:15px;padding:10px 20px;border-radius:999px;border:2px solid var(--rule);background:var(--card);color:var(--ink-soft);cursor:pointer;transition:all .2s}
.chip:hover{border-color:var(--primary);color:var(--ink);transform:translateY(-2px)}
.chip.on{background:var(--primary);border-color:var(--primary);color:#fff}
.count{margin-left:auto;align-self:center;color:var(--ink-faint);font-weight:700}

/* ---- about ---- */
.about{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center}
@media(max-width:820px){.about{grid-template-columns:1fr;gap:28px}}
.about h2{font-size:clamp(30px,4.4vw,46px);margin-bottom:16px}
.about p{color:var(--ink-soft);font-weight:600;font-size:18px;margin:0 0 16px}
.about b{color:var(--ink)}
.facepile{position:relative;aspect-ratio:1;max-width:380px;margin:0 auto;border-radius:34px;
  background:radial-gradient(120% 120% at 20% 15%,color-mix(in srgb,var(--grape) 30%,var(--card)),var(--card));
  border:1px solid var(--rule);box-shadow:var(--shadow);display:grid;place-items:center;overflow:hidden}
.facepile .rm{font-family:"Baloo 2";font-weight:800;font-size:clamp(70px,16vw,150px);background:linear-gradient(120deg,var(--coral),var(--grape),var(--teal));-webkit-background-clip:text;background-clip:text;color:transparent}
.chiprow{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.cr{font-family:"Baloo 2";font-weight:700;font-size:14px;padding:8px 15px;border-radius:999px;background:var(--card);border:1px solid var(--rule)}
.cr .em{margin-right:6px}

/* ---- books ---- */
.books{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media(max-width:820px){.books{grid-template-columns:repeat(2,1fr)}}
.book{aspect-ratio:3/4;border-radius:8px 16px 16px 8px;padding:18px 16px;display:flex;flex-direction:column;justify-content:space-between;color:#fff;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s;border-left:6px solid rgba(255,255,255,.35);text-decoration:none;position:relative;overflow:hidden}
.book:hover{transform:translateY(-6px) rotate(-1.5deg);box-shadow:var(--shadow)}
.book .bt{font-family:"Baloo 2";font-weight:800;font-size:19px;line-height:1.12}
.book .ba{font-family:"Baloo 2";font-weight:700;font-size:12.5px;opacity:.92;margin-bottom:2px}
.book .bm{font-weight:700;font-size:12.5px;opacity:.82}
.book::after{content:"↗";position:absolute;top:11px;right:13px;font-size:15px;font-weight:800;opacity:0;transition:opacity .2s}
.book:hover::after{opacity:.95}
.book:focus-visible{outline:3px solid var(--primary);outline-offset:3px}
.book.add{background:var(--card);color:var(--ink-faint);border:2px dashed var(--rule);align-items:center;justify-content:center;text-align:center;font-family:"Baloo 2";font-weight:700}

/* ---- talks + recognition ---- */
.two{display:grid;grid-template-columns:1fr 1fr;gap:44px}
@media(max-width:820px){.two{grid-template-columns:1fr;gap:40px}}
.talk{display:flex;gap:14px;align-items:flex-start;padding:16px 0;border-bottom:1px dashed var(--rule)}
.talk .yr{font-family:"Baloo 2";font-weight:800;color:var(--primary);font-size:15px;flex:none;width:52px}
.talk .tt{font-weight:700}
.talk .tm{color:var(--ink-faint);font-weight:600;font-size:14px}
.badges{display:flex;flex-wrap:wrap;gap:12px}
.badge{background:var(--card);border:1px solid var(--rule);border-radius:18px;padding:16px 18px;box-shadow:var(--shadow-sm);flex:1 1 200px}
.badge .be{font-size:26px}
.badge .bl{font-family:"Baloo 2";font-weight:800;margin-top:6px}
.badge .bs{color:var(--ink-soft);font-weight:600;font-size:14px}

/* ---- footer ---- */
footer{padding:56px 0 90px;border-top:1px solid var(--rule);margin-top:40px}
.foot{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.foot .fb{font-family:"Baloo 2";font-weight:800;font-size:22px}
.foot .fl{display:flex;gap:18px;flex-wrap:wrap}
.foot .fl a{font-weight:700;color:var(--ink-soft)}
.foot .fl a:hover{color:var(--primary)}
.foot .fn{color:var(--ink-faint);font-weight:600;font-size:14px;width:100%;text-align:center;margin-top:24px}

:focus-visible{outline:3px solid var(--grape);outline-offset:3px;border-radius:6px}
::selection{background:var(--primary);color:#fff}