/* ==========================================================================
   Ridwan Y. Kulu · Portfolio
   1 Tokens · 2 Base · 3 Layout · 4 Side rail (liquid glass) · 5 Hero
   6 About + ID card · 7 Projects · 8 Experience · 9 Stack · 10 Contact
   11 Animations · 12 Responsive · 13 Reduced motion
   ========================================================================== */

/* 1. TOKENS ---------------------------------------------------------------- */
:root{
  --bg:#eef7fb;--panel:#fff;--text:#0b0616;--muted:#585470;--line:#d8d2ea;
  --acc:#007a8c;--accbg:#ff2e88;--accink:#0b0114;--acc2:#4d7c0f;--code:#0a0514;--codetext:#d7efff;
  --scan:rgba(10,0,30,.022);
  /* liquid glass */
  --gb:rgba(255,255,255,.38);--gl:rgba(255,255,255,.8);--gs:rgba(0,0,0,.16);
  --rg1:.16;--rg2:.02;--rb:1.05;--rs:2;--hi1:.9;--hi2:.45;--hi3:.05;--sh1:.32;--sh2:.3;--sh3:.14;
  --rim1:.85;--rim2:.55;--hov:.14;--tb1:.08;--tb2:.28;--on1:.65;--on2:.2;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#05010e;--panel:#0c0618;--text:#e8f6ff;--muted:#8fa1bd;--line:#28113f;
    --acc:#00e5ff;--accbg:#ff2e88;--accink:#0b0114;--acc2:#b6f35c;--code:#07020f;--codetext:#d7efff;
    --scan:rgba(255,255,255,.035);
    --gb:rgba(255,255,255,.07);--gl:rgba(255,255,255,.22);--gs:rgba(0,0,0,.5);
    --rg1:.04;--rg2:.01;--rb:.82;--rs:1.5;--hi1:.3;--hi2:.12;--hi3:.015;--sh1:.1;--sh2:.08;--sh3:.04;
    --rim1:.32;--rim2:.16;--hov:.06;--tb1:.03;--tb2:.14;--on1:.3;--on2:.06;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#05010e;--panel:#0c0618;--text:#e8f6ff;--muted:#8fa1bd;--line:#28113f;
  --acc:#00e5ff;--accbg:#ff2e88;--accink:#0b0114;--acc2:#b6f35c;--code:#07020f;--codetext:#d7efff;
  --scan:rgba(255,255,255,.035);
  --gb:rgba(255,255,255,.07);--gl:rgba(255,255,255,.22);--gs:rgba(0,0,0,.5);
  --rg1:.04;--rg2:.01;--rb:.82;--rs:1.5;--hi1:.3;--hi2:.12;--hi3:.015;--sh1:.1;--sh2:.08;--sh3:.04;
  --rim1:.32;--rim2:.16;--hov:.06;--tb1:.03;--tb2:.14;--on1:.3;--on2:.06;
  color-scheme:dark;
}

/* 2. BASE ------------------------------------------------------------------ */
:root{box-sizing:border-box;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
*,*::before,*::after{box-sizing:inherit}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:"Bricolage Grotesque",system-ui,-apple-system,"Segoe UI",sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);background:var(--bg);z-index:10}
body::after{content:"";position:fixed;inset:-10%;pointer-events:none;z-index:-1;animation:drift 16s ease-in-out infinite alternate;
  background:repeating-linear-gradient(0deg,var(--scan) 0 1px,transparent 1px 3px),radial-gradient(620px 420px at 14% 8%,color-mix(in srgb,var(--acc) 20%,transparent),transparent 70%),radial-gradient(520px 440px at 88% 32%,color-mix(in srgb,var(--accbg) 15%,transparent),transparent 70%),radial-gradient(420px 360px at 68% 82%,color-mix(in srgb,var(--acc2) 6%,transparent),transparent 70%)}
a{color:inherit}
.m{font-family:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace}
.pb{position:fixed;top:env(safe-area-inset-top,0px);left:0;right:0;height:3px;background:var(--accbg);transform:scaleX(0);transform-origin:left;z-index:11}

/* 3. LAYOUT ---------------------------------------------------------------- */
.w{max-width:1080px;margin:0 auto;padding:0 22px}
section{padding:84px 0 0}
.ey{font-size:.78rem;color:var(--acc);margin:0 0 10px}
h1{font-size:clamp(2.6rem,7.5vw,5.2rem);font-weight:800;line-height:.98;letter-spacing:-.05em;margin:20px 0;text-shadow:0 0 28px color-mix(in srgb,var(--acc) 16%,transparent)}
h1:hover{text-shadow:2px 0 0 color-mix(in srgb,var(--accbg) 60%,transparent),-2px 0 0 color-mix(in srgb,var(--acc) 60%,transparent),0 0 28px color-mix(in srgb,var(--acc) 22%,transparent)}
h2{font-size:clamp(1.9rem,4.5vw,3rem);line-height:1.05;letter-spacing:-.04em;margin:0 0 30px;font-weight:800;max-width:18ch}
footer{border-top:1px solid var(--line);padding:20px 0;text-align:center;font-size:.78rem;color:var(--muted)}
.tg{display:flex;flex-wrap:wrap;gap:7px}
.tg span{border:1px solid var(--line);background:var(--panel);border-radius:6px;padding:3px 10px;font-size:.74rem;color:var(--text)}

/* 4. SIDE RAIL (liquid glass) ---------------------------------------------- */
.rail{position:fixed;left:16px;top:50%;transform:translateY(-50%);z-index:12;display:flex;flex-direction:column;align-items:center;gap:4px;padding:10px 8px;border:0;border-radius:24px;
  background:linear-gradient(160deg,rgb(255 255 255 / var(--rg1)),rgb(255 255 255 / var(--rg2))),color-mix(in srgb,var(--gb) 40%,transparent);
  -webkit-backdrop-filter:blur(14px) saturate(var(--rs)) brightness(var(--rb));backdrop-filter:blur(14px) saturate(var(--rs)) brightness(var(--rb));
  box-shadow:inset 2px 2px 3px -2px rgb(255 255 255 / var(--hi1)),inset -2px -2px 3px -2px rgb(255 255 255 / var(--hi2)),inset 0 0 24px rgb(255 255 255 / var(--hi3)),0 0 0 .5px var(--gs),0 20px 44px -16px var(--gs)}
.lq .rail{-webkit-backdrop-filter:blur(2px) url(#lg) saturate(var(--rs)) brightness(var(--rb));backdrop-filter:blur(2px) url(#lg) saturate(var(--rs)) brightness(var(--rb))}
.rail::before{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;opacity:.75;
  background:radial-gradient(110px circle at var(--rx,50%) var(--ry,0%),rgb(255 255 255 / var(--sh1)),transparent 65%),linear-gradient(160deg,rgb(255 255 255 / var(--sh2)),rgb(255 255 255 / 0) 30%,rgb(255 255 255 / 0) 72%,rgb(255 255 255 / var(--sh3)))}
.rail::after{content:"";position:absolute;inset:0;border-radius:inherit;padding:1.2px;pointer-events:none;
  background:conic-gradient(from 200deg,rgb(255 255 255 / var(--rim1)),rgb(255 255 255 / 0) 22%,rgb(255 255 255 / 0) 52%,rgb(255 255 255 / var(--rim2)) 72%,rgb(255 255 255 / 0) 92%);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask:linear-gradient(#000 0 0) content-box exclude,linear-gradient(#000 0 0)}
.rail svg{fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.rail a{position:relative;width:42px;height:42px;display:grid;place-items:center;border-radius:14px;color:var(--muted);text-decoration:none;transition:background .25s,color .25s,transform .25s}
.rail a svg{width:20px;height:20px}
.rail a:hover{color:var(--text);background:rgb(255 255 255 / var(--hov));transform:scale(1.08)}
.rail a.on{color:var(--acc);background:color-mix(in srgb,var(--accbg) 24%,var(--gb));box-shadow:inset 1px 1px 2px rgb(255 255 255 / var(--on1)),inset -1px -1px 2px rgb(255 255 255 / var(--on2)),0 0 18px -4px var(--accbg)}
.rail a::after{content:attr(data-t);position:absolute;left:calc(100% + 14px);top:50%;transform:translate(-6px,-50%);opacity:0;pointer-events:none;white-space:nowrap;background:var(--text);color:var(--bg);font:500 .75rem "IBM Plex Mono",ui-monospace,monospace;padding:5px 10px;border-radius:8px;transition:opacity .2s,transform .2s}
.rail a:hover::after{opacity:1;transform:translate(0,-50%)}
.rail hr{position:relative;width:26px;border:0;border-top:1px solid var(--gl);margin:6px 0}
.rail .tb{position:relative;width:38px;height:38px;padding:0;display:grid;place-items:center;border-radius:50%;cursor:pointer;color:var(--text);background:rgb(255 255 255 / var(--tb1));border:1px solid rgb(255 255 255 / var(--tb2));transition:transform .35s}
.rail .tb:hover{transform:rotate(45deg)}
.rail .tb svg{width:18px;height:18px}

/* 5. HERO ------------------------------------------------------------------ */
.hero{position:relative;padding:64px 0 40px;display:grid;grid-template-columns:1.15fr 1fr;gap:40px;align-items:center}
.hero::before{content:"";position:absolute;inset:-40px -20px;z-index:0;pointer-events:none;
  background-image:linear-gradient(color-mix(in srgb,var(--acc) 6%,transparent) 1px,transparent 1px),linear-gradient(90deg,color-mix(in srgb,var(--acc) 6%,transparent) 1px,transparent 1px);
  background-size:46px 46px;
  -webkit-mask-image:radial-gradient(ellipse 72% 62% at 34% 46%,#000,transparent 76%);
  mask-image:radial-gradient(ellipse 72% 62% at 34% 46%,#000,transparent 76%)}
.hero>div:first-child{position:relative;z-index:2}   /* text stays clickable above the canvas */
.hero>.lan{align-self:start;margin-top:-64px;height:554px;opacity:0;animation:up .8s .2s cubic-bezier(.2,.7,.2,1) forwards}   /* strap hangs from the very top of the page */
.st{display:inline-flex;gap:8px;align-items:center;font-size:.78rem;color:var(--muted);border:1px solid var(--line);padding:5px 12px;border-radius:6px;background:var(--panel)}
.st i{width:8px;height:8px;border-radius:50%;background:var(--acc2);box-shadow:0 0 10px var(--acc2);animation:pulse 1.8s infinite}
h1 u{text-decoration:none;background:linear-gradient(transparent 62%,var(--accbg) 62% 92%,transparent 92%) no-repeat;background-size:100% 100%;filter:drop-shadow(0 0 14px color-mix(in srgb,var(--accbg) 60%,transparent))}
.ld{color:var(--muted);font-size:1.08rem;max-width:50ch;margin:0 0 26px}
.cta{display:flex;gap:12px;flex-wrap:wrap}
.b{position:relative;overflow:hidden;padding:12px 20px;border-radius:8px;text-decoration:none;font-weight:700;border:1.5px solid var(--text);transition:transform .2s}
.b:hover{transform:translateY(-2px)}
.b.p{background:var(--accbg);color:var(--accink);border-color:var(--accbg);box-shadow:0 0 26px -6px color-mix(in srgb,var(--accbg) 75%,transparent)}
.b.p::after{content:"";position:absolute;top:0;left:-60%;width:40%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.55),transparent);transform:skewX(-20deg);animation:shine 3.6s 1.6s infinite}
.term{background:var(--code);color:var(--codetext);border-radius:14px;border:1px solid color-mix(in srgb,var(--acc) 30%,var(--line));overflow:hidden;font-size:.82rem;box-shadow:0 20px 50px -20px rgba(0,0,0,.55),0 0 44px -18px color-mix(in srgb,var(--acc) 40%,transparent)}
.term .bar{display:flex;gap:6px;padding:11px 14px;border-bottom:1px solid #2a1240;align-items:center;color:#8fa1bd}
.term .bar i{width:10px;height:10px;border-radius:50%;background:#35205c}
.term .bar i:nth-child(1){background:#ff2e88}
.term .bar i:nth-child(2){background:#fcee0a}
.term .bar i:nth-child(3){background:#00e5ff}
.term .bar span{margin-left:8px;font-size:.74rem}
.term pre{margin:0;padding:16px 18px;overflow-x:auto;line-height:1.65}
.tl{display:block;opacity:0}
.term.typing .tl{animation:line .5s forwards}
.k{color:#00e5ff}.s{color:#b6f35c}.n{color:#ff2e88}.c{color:#6b5b8a}
.cur{display:inline-block;width:8px;height:1em;background:#00e5ff;box-shadow:0 0 8px #00e5ff;vertical-align:-2px;animation:pulse 1s steps(2) infinite}
.mq{border-block:1px solid var(--line);overflow:hidden;margin-top:24px;background:var(--panel)}
.mq div{display:flex;gap:42px;width:max-content;padding:14px 42px 14px 0;animation:marquee 28s linear infinite;font-size:.85rem;color:var(--muted)}
.mq:hover div{animation-play-state:paused}
.mq span{display:inline-flex;align-items:center;gap:10px}
.mq span::before{content:"✦";color:var(--acc2);margin-right:32px;text-shadow:0 0 10px var(--acc2)}
.mq svg{width:18px;height:18px;flex:none;color:var(--text)}

/* 6. ABOUT + ID CARD ------------------------------------------------------- */
.ab2{display:grid;grid-template-columns:1fr minmax(300px,380px);column-gap:36px;align-items:start}
.ab2 .ab{display:contents}
.ab2>.ey,.ab2>h2,.ab2 .ab>div:first-child{grid-column:1}
.ab2 .ab p{margin:0 0 14px;color:var(--muted)}
.ab2 .ab p:first-child{color:var(--text);font-size:1.15rem}
.ab2 .term{grid-column:2;grid-row:1/span 3}
@media (min-width:901px){.ab2{grid-template-rows:auto auto 1fr}}   /* extra height from the card goes below the text, not between heading and text */
.fa{grid-column:1/-1;margin-top:28px;display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:12px}
.fa div{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.fa b{display:block;font-size:1.5rem;letter-spacing:-.03em}
.fa span{font-size:.8rem;color:var(--muted)}
.lan{position:relative;height:490px}
.lan::before{content:"";position:absolute;top:-8px;left:50%;width:64px;height:10px;margin-left:-32px;border-radius:0 0 8px 8px;background:var(--text);opacity:.85}
main{overflow-x:clip}
/* React Bits Lanyard (3D) mounts into .lan3; the 2D rope card below is the fallback */
.lan3{position:absolute;top:0;bottom:-220px;left:-120px;right:-120px}   /* bigger than the column so the swinging card is never clipped */
.lanyard{position:relative;width:100%;height:100%;overflow:hidden}
.lanyard-canvas{display:block;width:100%;height:100%}
.lan.three .rope,.lan.three .cw,.lan.three::before{display:none}
.rope{position:absolute;inset:0;width:100%;height:100%;overflow:visible;pointer-events:none}
.rb,.rs{fill:none;stroke-width:20;stroke-linejoin:round}
.rb{stroke:color-mix(in srgb,var(--accbg) 70%,#000);stroke-linecap:round;filter:drop-shadow(0 0 4px color-mix(in srgb,var(--accbg) 65%,transparent))}
.rs{stroke:var(--accbg);stroke-dasharray:7 11;filter:drop-shadow(0 0 5px color-mix(in srgb,var(--accbg) 85%,transparent))}
.cw{position:absolute;left:0;top:0;width:210px;transform-origin:50% 21px;cursor:grab;touch-action:pan-y;will-change:transform;z-index:2}
.hook{position:absolute;left:50%;top:3px;width:34px;height:36px;margin-left:-17px;z-index:3;pointer-events:none;border-radius:10px;border:3px solid #aeb6bf;border-top-color:#d9dee3;box-shadow:inset 0 0 0 1px rgba(0,0,0,.12),0 2px 4px rgba(0,0,0,.25)}
.idc{position:relative;width:210px;padding:46px 14px 16px;border-radius:18px;background:var(--panel);border:1px solid var(--line);box-shadow:0 24px 50px -22px rgba(0,0,0,.5);overflow:hidden;user-select:none}
.idc::before{content:"";position:absolute;top:16px;left:50%;width:56px;height:10px;margin-left:-28px;border-radius:8px;background:var(--bg);border:1px solid var(--line)}
.ph{height:168px;border-radius:12px;background:linear-gradient(135deg,var(--accbg),#22d3ee);display:grid;place-items:center;font-size:3rem;font-weight:800;color:#fff;letter-spacing:-.05em;overflow:hidden}
.ph img{width:100%;height:100%;object-fit:cover}
.nm{font-weight:800;font-size:1.15rem;letter-spacing:-.03em;margin-top:14px;line-height:1.15}
.rl{font-size:.78rem;color:var(--acc);margin-top:3px}
.mt{display:flex;justify-content:space-between;font-size:.68rem;color:var(--muted);margin-top:12px}
.bc{height:26px;margin-top:10px;border-radius:2px;opacity:.75;background:repeating-linear-gradient(90deg,var(--text) 0 2px,transparent 2px 4px,var(--text) 4px 5px,transparent 5px 8px)}
.sheen{position:absolute;inset:0;pointer-events:none;background:linear-gradient(115deg,transparent 35%,rgba(255,255,255,.22) 50%,transparent 65%);background-size:250% 100%;animation:holo 5s linear infinite}

/* 7. PROJECTS -------------------------------------------------------------- */
.pg{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:16px}
.card{position:relative;overflow:hidden;background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:24px;display:flex;flex-direction:column;gap:14px;transition:transform .25s,border-color .25s}
.card:hover{transform:translateY(-4px);border-color:var(--acc);box-shadow:0 22px 50px -30px color-mix(in srgb,var(--acc) 60%,transparent)}
.card::before{content:"";position:absolute;inset:0;pointer-events:none;opacity:0;transition:opacity .3s;background:radial-gradient(280px circle at var(--mx,50%) var(--my,50%),color-mix(in srgb,var(--accbg) 22%,transparent),transparent 65%)}
.card:hover::before{opacity:1}
.card .no{color:var(--acc);font-size:.8rem}
.card h3{margin:0;font-size:1.3rem;letter-spacing:-.03em;line-height:1.2}
.card ul{margin:0;padding-left:18px;color:var(--muted);font-size:.93rem}
.card li{margin-bottom:6px}
.card .tg{margin-top:auto;padding-top:4px}
.gh{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 16px;border-radius:8px;border:1.5px solid var(--text);text-decoration:none;font-size:.82rem;font-weight:500;transition:background .2s,color .2s,border-color .2s}
.gh:hover{background:var(--accbg);color:var(--accink);border-color:var(--accbg)}

/* 8. EXPERIENCE (tabs) ----------------------------------------------------- */
.tabs{display:inline-flex;gap:4px;padding:5px;max-width:100%;overflow-x:auto;margin-bottom:26px;border-radius:999px;background:var(--gb);border:1px solid var(--gl);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);scrollbar-width:none}
.tab{border:0;background:transparent;color:var(--muted);font:inherit;font-size:.8rem;padding:8px 16px;border-radius:999px;cursor:pointer;white-space:nowrap;transition:background .25s,color .25s}
.tab:hover{color:var(--text)}
.tab.on{background:var(--accbg);color:var(--accink)}
.pan{display:none}
.pan.on{display:block;animation:up .5s cubic-bezier(.2,.7,.2,1)}
.ex{display:grid;grid-template-columns:150px 1fr;gap:22px;padding:24px 0;border-top:1px solid var(--line)}
.ex:last-child{border-bottom:1px solid var(--line)}
.ex .yr{font-size:.8rem;color:var(--acc)}
.ex h3{margin:0 0 2px;font-size:1.2rem;letter-spacing:-.02em}
.ex .or{font-size:.9rem;color:var(--muted);margin-bottom:10px}
.ex ul{margin:0;padding-left:18px;color:var(--muted);font-size:.94rem}
.ex li{margin-bottom:5px}

/* 9. STACK (bento) --------------------------------------------------------- */
.bento{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:14px}
.b7{grid-column:span 7}.b5{grid-column:span 5}.b4{grid-column:span 4}.b3{grid-column:span 3}
.bt{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:20px;transition:border-color .3s}
.bt:hover{border-color:var(--acc)}
.bh{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.bi{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;background:var(--accbg);color:var(--accink)}
.bi svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.bh h4{margin:0;flex:1;font-size:.85rem;font-weight:500}
.bh em{font-style:normal;font-size:.72rem;color:var(--muted)}
.tiles{display:flex;flex-wrap:wrap;gap:10px}
.tile{flex:1 1 84px;display:flex;flex-direction:column;align-items:center;gap:10px;padding:16px 8px 12px;border-radius:14px;background:var(--bg);border:1px solid var(--line);transition:transform .25s,border-color .25s}
.tile svg{width:34px;height:34px;transition:transform .3s}
.tile b{font:500 .74rem "IBM Plex Mono",ui-monospace,monospace;text-align:center}
.tile:hover{transform:translateY(-4px);border-color:var(--acc)}
.tile:hover svg{transform:scale(1.15) rotate(-6deg)}

/* 10. CONTACT + SOCIAL ----------------------------------------------------- */
.ct{padding:100px 0 50px;text-align:center}
.ct h2{margin:0 auto 18px;max-width:14ch;font-size:clamp(2.4rem,7vw,4.6rem)}
.ct a.big{font-size:clamp(1.05rem,3.6vw,1.9rem);font-weight:700;text-decoration:underline;text-decoration-color:var(--accbg);text-decoration-thickness:4px;text-underline-offset:6px;word-break:break-all}
.so{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:44px;text-align:left}
.sl{display:flex;align-items:center;gap:16px;padding:18px 20px;background:var(--panel);border:1px solid var(--line);border-radius:18px;text-decoration:none;transition:transform .25s,border-color .25s}
.sl:hover{transform:translateY(-4px);border-color:var(--acc)}
.sl .bd{width:48px;height:48px;border-radius:13px;display:grid;place-items:center;flex:none;transition:transform .3s}
.sl:hover .bd{transform:rotate(-8deg) scale(1.08)}
.sl .bd svg{width:24px;height:24px}
.sl .bd.gh2{background:var(--text);color:var(--bg)}
.sl .bd.li{background:#0a66c2;color:#fff}
.sl .bd.ig{background:linear-gradient(45deg,#f9ce34,#ee2a7b 55%,#6228d7);color:#fff}
.sl .tx{display:flex;flex-direction:column;min-width:0;flex:1}
.sl b{font-size:1.05rem;letter-spacing:-.02em}
.sl small{color:var(--muted);font-size:.78rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sl i{font-style:normal;color:var(--muted);font-size:1.2rem;transition:transform .25s,color .25s}
.sl:hover i{transform:translate(4px,-4px);color:var(--acc)}

/* 11. ANIMATIONS ----------------------------------------------------------- */
@keyframes pulse{50%{opacity:.3}}
@keyframes up{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}
@keyframes grow{from{background-size:0% 100%}to{background-size:100% 100%}}
@keyframes float{50%{transform:translateY(-8px)}}
@keyframes line{from{opacity:0;transform:translateX(-10px)}to{opacity:1;transform:none}}
@keyframes drift{to{transform:translate3d(40px,30px,0) scale(1.08)}}
@keyframes shine{to{left:130%}}
@keyframes holo{from{background-position:150% 0}to{background-position:-100% 0}}
@keyframes marquee{to{transform:translateX(-50%)}}
/* hero intro */
.hero>div:first-child>*{opacity:0;animation:up .7s cubic-bezier(.2,.7,.2,1) forwards}
.hero>div:first-child>:nth-child(2){animation-delay:.12s}
.hero>div:first-child>:nth-child(3){animation-delay:.24s}
.hero>div:first-child>:nth-child(4){animation-delay:.36s}
h1 u{animation:grow .9s .9s cubic-bezier(.2,.7,.2,1) backwards}
.term{animation:float 6s ease-in-out infinite}
/* scroll reveal (class .in is added by main.js) */
.rv{opacity:0;transform:translateY(20px);transition:opacity .6s,transform .6s}
.rv.in{opacity:1;transform:none}
.rv .card,.rv .ex,.rv .bt,.rv .sl,.rv .fa>div{opacity:0}
.rv.in :is(.card,.ex,.bt,.sl,.fa>div){opacity:1;animation:up .7s cubic-bezier(.2,.7,.2,1) backwards}
.rv.in :is(.card,.ex,.bt,.sl,.fa>div):nth-of-type(2){animation-delay:.1s}
.rv.in :is(.card,.ex,.bt,.sl,.fa>div):nth-of-type(3){animation-delay:.2s}
.rv.in :is(.card,.ex,.bt,.sl,.fa>div):nth-of-type(4){animation-delay:.3s}
.rv.in :is(.bt):nth-of-type(5){animation-delay:.4s}
.rv.in .ey{animation:up .6s backwards}
.rv.in h2{animation:up .8s .1s cubic-bezier(.2,.7,.2,1) backwards}

/* 12. RESPONSIVE ----------------------------------------------------------- */
@media (min-width:1500px){.w{max-width:1200px}}
@media (min-width:761px) and (max-width:1240px){main,footer{padding-left:84px}.mq{margin-left:-84px}}   /* room for the side rail; the marquee still bleeds edge to edge */
@media (min-width:761px) and (max-height:560px){.rail{padding:6px}.rail a{width:34px;height:34px}.rail .tb{width:32px;height:32px}}
@media (max-width:1024px){
  .hero{gap:28px}
  .pg{grid-template-columns:repeat(2,minmax(0,1fr))}
  .pg>.card:first-child{grid-column:1/-1}
  .b7{grid-column:span 12}.b5,.b4,.b3{grid-column:span 6}
}
@media (max-width:900px){
  .ab2{grid-template-columns:1fr}
  .ab2 .term{grid-column:1;grid-row:auto;margin-top:8px}
  .fa{margin-top:8px}
}
@media (max-width:760px){                                   /* hero stacks only on phones; tablets keep text + card side by side */
  .lan3{left:-22px;right:-22px;bottom:-160px}
  .hero{grid-template-columns:1fr;padding-top:48px}
  .hero>.lan{margin-top:0;height:470px}
  .lan3{-webkit-mask-image:linear-gradient(to bottom,transparent,#000 56px);mask-image:linear-gradient(to bottom,transparent,#000 56px)}   /* soft top edge, applied to the canvas so it never clips the card */
}
@media (max-width:820px){
  .so{grid-template-columns:1fr}
}
@media (max-width:760px){
  body{padding-bottom:76px}
  section{padding-top:64px}
  /* rail becomes a bottom dock */
  .rail{left:50%;top:auto;bottom:calc(env(safe-area-inset-bottom,0px) + 10px);transform:translateX(-50%);flex-direction:row;gap:2px;padding:7px 8px;border-radius:20px;max-width:calc(100vw - 16px);overflow-x:auto;scrollbar-width:none}
  .rail a{width:38px;height:38px;flex:none}
  .rail a svg{width:19px;height:19px}
  .rail a::after{display:none}
  .rail hr{width:0;height:24px;border-top:0;border-left:1px solid var(--gl);margin:0 4px;flex:none}
  .rail .tb{width:34px;height:34px;flex:none}
  .bento>.bt{grid-column:1/-1}
  .ex{grid-template-columns:1fr;gap:6px}
  .term{display:none}                                                /* JSON card is hidden on phones */
  .hero>.lan{height:440px}
  .ph{height:150px}
  .lan{height:450px}
  .bt{padding:18px}
  .tile svg{width:30px;height:30px}
  /* softer liquid glass on the bottom dock */
  :root{--gb:rgba(255,255,255,.26);--rg1:.08;--rg2:.01;--rb:1;--rs:1.6;--hi1:.55;--hi2:.25;--hi3:.03;--sh1:.18;--sh2:.16;--sh3:.08;--rim1:.6;--rim2:.3;--hov:.1;--tb1:.06;--tb2:.2;--on1:.45;--on2:.12}
}
@media (max-width:760px) and (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){--gb:rgba(255,255,255,.04);--rg1:.025;--rg2:.005;--rb:.72;--rs:1.3;--hi1:.2;--hi2:.08;--hi3:.01;--sh1:.06;--sh2:.05;--sh3:.025;--rim1:.22;--rim2:.1;--hov:.05;--tb1:.02;--tb2:.1;--on1:.2;--on2:.04}
}
@media (max-width:760px){
  :root[data-theme="dark"]{--gb:rgba(255,255,255,.04);--rg1:.025;--rg2:.005;--rb:.72;--rs:1.3;--hi1:.2;--hi2:.08;--hi3:.01;--sh1:.06;--sh2:.05;--sh3:.025;--rim1:.22;--rim2:.1;--hov:.05;--tb1:.02;--tb2:.1;--on1:.2;--on2:.04}
}
@media (max-width:640px){
  .pg{grid-template-columns:1fr}
  .card{padding:20px;gap:12px}
  .card h3{font-size:1.15rem}
  .card ul{font-size:.9rem}
  .card .gh{width:100%}
}
@media (max-width:480px){
  .w{padding:0 16px}
  .hero{padding-top:36px}
  .cta .b{flex:1;text-align:center}
  .term{font-size:.72rem}
  .term pre{padding:14px;line-height:1.55}
  .tabs{display:flex;width:100%}
  .tab{flex:1;padding:8px 6px}
  .fa{grid-template-columns:1fr 1fr}
  .tile{flex-basis:calc(50% - 5px)}
  .ct{padding-top:72px}
  .sl{padding:16px}
}

/* 13. REDUCED MOTION ------------------------------------------------------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .rv,.hero>div:first-child>*,.hero>.lan,.term,.rv .card,.rv .ex,.rv .bt,.rv .sl,.rv .fa>div,.tl{opacity:1!important;transform:none}
  .pb{display:none}
}