:root{
  --bg:#e9edf8;--ink:#171b33;--mute:#5b6283;
  --glass:rgba(255,255,255,.34);--glass2:rgba(255,255,255,.08);
  --edge:rgba(255,255,255,.85);--rim:rgba(255,255,255,.35);--shade:rgba(50,60,140,.28);
  --accent:#5a62ff;--accent2:#ff7eb3;--on:#fff;
  --spring:cubic-bezier(.34,1.56,.64,1);--ease:cubic-bezier(.22,1,.36,1);
}
[data-theme=dark]{
  --bg:#0a0c1c;--ink:#eef0ff;--mute:#9aa2cc;
  --glass:rgba(34,38,84,.34);--glass2:rgba(255,255,255,.03);
  --edge:rgba(255,255,255,.28);--rim:rgba(255,255,255,.08);--shade:rgba(0,0,10,.6);
  --accent:#8a90ff;--accent2:#ff8fc0;--on:#10122a;
}
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth}
body{font-family:'Nunito',ui-rounded,'SF Pro Rounded',system-ui,sans-serif;font-size:17px;line-height:1.6;color:var(--ink);background:var(--bg);min-height:100vh;-webkit-font-smoothing:antialiased;transition:background .7s var(--ease),color .5s}
#bg{position:fixed;inset:0;width:100%;height:100%;z-index:-1}
body.theming *{transition:background-color .6s var(--ease),color .5s,border-color .6s,box-shadow .6s!important}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px}

/* Liquid glass */
.glass{position:relative;background:linear-gradient(145deg,var(--glass),var(--glass2));
  backdrop-filter:blur(28px) saturate(180%) brightness(1.04);-webkit-backdrop-filter:blur(28px) saturate(180%) brightness(1.04);
  border-radius:32px;
  box-shadow:inset 0 1.5px 0 var(--edge),inset 0 -1.5px 0 var(--rim),inset 1.5px 0 0 var(--rim),inset -1.5px 0 0 var(--rim),0 30px 60px -28px var(--shade);
  isolation:isolate;overflow:hidden}
.glass::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;opacity:0;transition:opacity .4s;
  background:radial-gradient(420px circle at var(--mx,50%) var(--my,0%),rgba(255,255,255,.32),transparent 60%)}
.glass:hover::before{opacity:1}
[data-theme=dark] .glass::before{background:radial-gradient(420px circle at var(--mx,50%) var(--my,0%),rgba(150,160,255,.18),transparent 60%)}

/* Nav */
.nav{position:fixed;z-index:20;top:18px;left:50%;transform:translateX(-50%);width:min(780px,calc(100% - 28px));
  display:flex;align-items:center;justify-content:space-between;padding:10px 12px 10px 20px;border-radius:999px;
  animation:drop .9s var(--spring) both}
@keyframes drop{from{transform:translate(-50%,-90px) scale(.9);opacity:0}}
.brand{display:flex;align-items:center;gap:9px;font-weight:900;font-size:19px;letter-spacing:-.02em}
.nav nav{display:flex;gap:6px}
.nav nav a{padding:7px 15px;border-radius:999px;font-weight:700;font-size:15px;color:var(--mute);transition:background .3s,color .3s,transform .4s var(--spring)}
.nav nav a:hover{color:var(--ink);background:var(--rim);transform:translateY(-2px) scale(1.05)}

/* Cartoony theme switch */
.switch{position:relative;width:68px;height:38px;border-radius:999px;background:linear-gradient(180deg,#9ad0ff,#cfe8ff);
  box-shadow:inset 0 2px 5px rgba(0,40,120,.25),0 0 0 1.5px var(--edge);transition:background .6s var(--ease)}
[data-theme=dark] .switch{background:linear-gradient(180deg,#2a2f73,#161a45)}
.thumb{position:absolute;top:4px;left:4px;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;
  background:#ffd35a;color:#b36b00;box-shadow:0 3px 8px rgba(0,0,0,.28),inset 0 -3px 4px rgba(200,120,0,.35),inset 0 2px 3px #fff8;
  transition:transform .7s var(--spring),background .5s,color .5s}
[data-theme=dark] .thumb{transform:translateX(30px);background:#e7e9ff;color:#5560c8;box-shadow:0 3px 8px rgba(0,0,0,.5),inset 0 -3px 4px rgba(90,100,200,.4),inset 0 2px 3px #fff}
.thumb svg{position:absolute;width:18px;height:18px;transition:transform .6s var(--spring),opacity .3s}
.moon{opacity:0;transform:rotate(-120deg) scale(.3)}
[data-theme=dark] .sun{opacity:0;transform:rotate(120deg) scale(.3)}
[data-theme=dark] .moon{opacity:1;transform:none}
.switch:active .thumb{width:38px}
[data-theme=dark] .switch:active .thumb{width:38px;transform:translateX(22px)}
.switch.wobble{animation:wob .6s var(--spring)}
@keyframes wob{30%{transform:scale(1.12,.9)}60%{transform:scale(.96,1.06)}}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 24px;border-radius:999px;font-weight:800;
  transition:transform .45s var(--spring),box-shadow .3s,background .3s}
.btn:hover{transform:translateY(-3px) scale(1.05)}
.btn:active{transform:scale(.92);transition-duration:.12s}
.primary{background:linear-gradient(180deg,color-mix(in srgb,var(--accent) 82%,#fff),var(--accent));color:var(--on);
  box-shadow:inset 0 2px 0 #fff6,0 12px 24px -10px var(--accent)}
[data-theme=light] .primary{color:#fff}
.ghost{background:var(--glass);box-shadow:inset 0 0 0 1.5px var(--edge)}
.round{width:52px;height:52px;padding:0;background:var(--glass);box-shadow:inset 0 0 0 1.5px var(--edge)}
.round svg{width:22px;height:22px}
.big{padding:17px 44px;font-size:20px}

/* Layout */
main{max-width:1120px;margin:0 auto;padding:0 22px}
.hero{min-height:100vh;display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;padding:120px 0 60px}
h1{font-size:clamp(40px,5.6vw,68px);line-height:1.02;letter-spacing:-.04em;font-weight:900;max-width:11ch}
.hero-copy p{margin:22px 0 32px;font-size:19px;color:var(--mute);max-width:42ch}
.cta{display:flex;gap:12px;flex-wrap:wrap}
.hero-copy>*{animation:rise .9s var(--ease) both}
.hero-copy p{animation-delay:.12s}.cta{animation-delay:.22s}
@keyframes rise{from{opacity:0;transform:translateY(26px);filter:blur(6px)}}
.timer{padding:28px;display:flex;flex-direction:column;align-items:center;gap:24px;animation:rise 1s .3s var(--ease) both}

/* Segmented control */
.seg{position:relative;display:grid;grid-template-columns:repeat(3,1fr);width:100%;padding:5px;border-radius:999px;background:var(--glass2);box-shadow:inset 0 2px 6px rgba(0,0,0,.12)}
.seg button{position:relative;z-index:1;padding:8px 6px;font-weight:700;font-size:14px;color:var(--mute);transition:color .3s}
.seg button.on{color:var(--ink)}
.seg-thumb{position:absolute;top:5px;bottom:5px;left:5px;width:calc((100% - 10px)/3);border-radius:999px;background:var(--glass);
  box-shadow:inset 0 1.5px 0 var(--edge),0 4px 12px -4px var(--shade);transform:translateX(calc(var(--i,0)*100%));transition:transform .6s var(--spring)}

/* Ring */
.ring{position:relative;width:min(280px,70vw);aspect-ratio:1}
.ring svg{width:100%;height:100%;transform:rotate(-90deg)}
.ring circle{fill:none;stroke-width:11;stroke-linecap:round}
.track{stroke:var(--rim)}
.prog{stroke:url(#g);stroke:var(--accent);stroke-dasharray:553;stroke-dashoffset:0;transition:stroke-dashoffset 1s linear,stroke .5s;filter:drop-shadow(0 0 8px var(--accent))}
.time{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}
.time output{font-size:58px;font-weight:900;letter-spacing:-.03em;font-variant-numeric:tabular-nums;line-height:1}
.time small{margin-top:8px;color:var(--mute);font-weight:700}
.ring.run .time output{animation:breathe 4s ease-in-out infinite}
@keyframes breathe{50%{transform:scale(1.04)}}
.ring.finish{animation:boing .9s var(--spring)}
@keyframes boing{30%{transform:scale(1.1,.92)}60%{transform:scale(.96,1.05)}}
.controls{display:flex;align-items:center;gap:18px}
.count{color:var(--mute);font-weight:600;font-size:15px}.count b{color:var(--ink)}

/* Bento */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:20px;padding-bottom:90px}
.bento article{padding:32px}
.bento h2{font-size:26px;line-height:1.2;letter-spacing:-.025em;font-weight:900}
.lede{color:var(--mute);margin:6px 0 22px}
.cardsec{grid-column:span 4}.weeksec{grid-column:span 2}.tasksec{grid-column:span 6}
.reveal{opacity:0;transform:translateY(40px) scale(.97);transition:opacity .9s var(--ease),transform 1s var(--spring)}
.reveal.in{opacity:1;transform:none}

/* Flashcards */
.deck{perspective:1200px}
.fc{position:relative;height:190px;transform-style:preserve-3d;transition:transform .8s var(--spring);cursor:pointer;border-radius:24px}
.fc.flipped{transform:rotateY(180deg)}
.face{position:absolute;inset:0;display:grid;place-items:center;padding:22px;text-align:center;border-radius:24px;backface-visibility:hidden;-webkit-backface-visibility:hidden;
  font-size:22px;font-weight:800;line-height:1.3;background:var(--glass);box-shadow:inset 0 1.5px 0 var(--edge),inset 0 0 0 1.5px var(--rim)}
.back{transform:rotateY(180deg);background:linear-gradient(145deg,color-mix(in srgb,var(--accent) 35%,transparent),var(--glass))}
.fc.out{animation:out .35s var(--ease) forwards}.fc.in{animation:inn .6s var(--spring)}
@keyframes out{to{opacity:0;transform:translateX(-60px) rotate(-6deg)}}
@keyframes inn{from{opacity:0;transform:translateX(60px) rotate(6deg)}}
.fc-actions{display:flex;align-items:center;justify-content:space-between;margin-top:20px}
.dots{display:flex;gap:8px}
.dots i{width:9px;height:9px;border-radius:9px;background:var(--rim);transition:width .5s var(--spring),background .3s}
.dots i.on{width:26px;background:var(--accent)}

/* Week */
.bars{display:flex;align-items:flex-end;justify-content:space-between;gap:8px;height:150px}
.bar{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%;gap:8px;font-size:13px;font-weight:700;color:var(--mute)}
.bar i{width:100%;height:0;border-radius:12px;background:linear-gradient(180deg,var(--accent2),var(--accent));box-shadow:inset 0 2px 0 #fff5;transition:height 1.2s var(--spring);transition-delay:calc(var(--n)*80ms)}
.bar:hover i{filter:brightness(1.15)}
.bar.today{color:var(--ink)}

/* Tasks */
.tasks{list-style:none;padding:0;margin:18px 0;display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:10px}
.tasks li{display:flex;align-items:center;gap:14px;padding:14px 18px;border-radius:20px;background:var(--glass2);box-shadow:inset 0 0 0 1.5px var(--rim);font-weight:700;cursor:pointer;
  transition:transform .4s var(--spring)}
.tasks li:hover{transform:translateY(-2px)}
.tasks li.pop{animation:in .6s var(--spring)}
@keyframes in{from{opacity:0;transform:scale(.8)}}
.box{flex:none;width:26px;height:26px;border-radius:9px;border:2.5px solid var(--mute);display:grid;place-items:center;transition:background .3s,border-color .3s,transform .5s var(--spring)}
.box svg{width:16px;height:16px;stroke:#fff;stroke-width:3.4;fill:none;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:22;stroke-dashoffset:22;transition:stroke-dashoffset .45s var(--ease) .1s}
.tasks li.done .box{background:var(--accent);border-color:var(--accent);transform:scale(1.18) rotate(-8deg);animation:tick .5s var(--spring)}
.tasks li.done .box svg{stroke-dashoffset:0}
@keyframes tick{50%{transform:scale(.8)}}
.tasks li span{transition:color .3s,opacity .3s}
.tasks li.done span{text-decoration:line-through;opacity:.5}
.add{display:flex;gap:10px}
.add input{flex:1;min-width:0;font:inherit;font-weight:600;color:var(--ink);padding:0 22px;height:52px;border-radius:999px;border:0;background:var(--glass2);box-shadow:inset 0 2px 6px rgba(0,0,0,.1),inset 0 0 0 1.5px var(--rim);transition:box-shadow .3s}
.add input:focus{outline:0;box-shadow:inset 0 0 0 2.5px var(--accent)}
.add input::placeholder{color:var(--mute)}
footer{text-align:center;color:var(--mute);padding:0 20px 50px;font-weight:600}

@media(max-width:880px){
  .hero{grid-template-columns:1fr;gap:40px;padding-top:110px}
  .cardsec,.weeksec{grid-column:span 6}
  .nav nav{display:none}.nav{justify-content:space-between}
}
@media(prefers-reduced-motion:reduce){*,*::before{animation-duration:.01ms!important;transition-duration:.01ms!important}html{scroll-behavior:auto}}