/* Fredoka, self-hosted (SIL Open Font License) so no requests go to third parties */
@font-face{font-family:'Fredoka';font-style:normal;font-display:swap;font-weight:300 700;
  src:url(../fonts/fredoka-latin-wght-normal.woff2) format('woff2-variations')}
:root{
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px);
  padding-bottom:env(safe-area-inset-bottom,0px);
}
/* Four forest seasons. The season is set on <html data-season>: by date, or the child's pick.
   --leaf is the UI accent; --canopy colours the trees; --fruit is blossom, fruit or berries;
   --snow caps the trees (winter only); --particle is what drifts down the screen. */
:root,[data-season=summer]{
  color-scheme:light;
  --bg:#E8F0E0; --surface:#F8FBF4; --ink:#1E2B1A; --muted:#5B6B54; --line:#CFDCC4; --key-shadow:#B9CAAE;
  --leaf:#3F8F3A; --leaf-2:#86C25F; --canopy:#3F8F3A; --canopy-2:#86C25F; --sprout:#3F8F3A; --sprout-2:#86C25F;
  --bark:#7A4E2D; --soil:#CDBBA0; --fruit:#EFA52A; --sun:#EFA52A; --berry:#C44569;
  --snow:transparent; --particle:transparent;
}
[data-season=spring]{
  color-scheme:light;
  --bg:#EEF6EA; --surface:#FCFEFA; --ink:#1F2B1C; --muted:#5A6B55; --line:#D6E6CC; --key-shadow:#BED3B2;
  --leaf:#3F8F3A; --leaf-2:#86C25F; --canopy:#78BE57; --canopy-2:#B3DE8C; --sprout:#4E9F3D; --sprout-2:#9BD272;
  --bark:#7A4E2D; --soil:#CDBBA0; --fruit:#F38DB6; --sun:#E5962A; --berry:#C44569;
  --snow:transparent; --particle:#F6B3CD;
}
[data-season=autumn]{
  color-scheme:light;
  --bg:#F4EADB; --surface:#FFF9F0; --ink:#2E2116; --muted:#76604C; --line:#E7D4BB; --key-shadow:#D4BB9A;
  --leaf:#A5521C; --leaf-2:#E2A04A; --canopy:#D2691E; --canopy-2:#EDB04A; --sprout:#6E9A3A; --sprout-2:#B4C96A;
  --bark:#6B4226; --soil:#BFA27F; --fruit:#A82E2A; --sun:#D9861C; --berry:#B23A48;
  --snow:transparent; --particle:#D9792B;
}
[data-season=winter]{
  color-scheme:dark;
  --bg:#0B121C; --surface:#152030; --ink:#E3ECF4; --muted:#8FA2B6; --line:#22303F; --key-shadow:#05080D;
  --leaf:#2F8A6B; --leaf-2:#6DB596; --canopy:#2E6E58; --canopy-2:#4F937A; --sprout:#4F9B74; --sprout-2:#86C6A2;
  --bark:#7D6150; --soil:#8E9FB1; --fruit:#D6455C; --sun:#F2C25B; --berry:#EF7A94;
  --snow:#C3D0DD; --particle:rgba(214,226,238,.5);
}
*,*::before,*::after{box-sizing:border-box}
html{height:100%;scroll-padding-top:env(safe-area-inset-top,0px)}
body{height:100%;margin:0;background:var(--bg);color:var(--ink);
  font-family:'Fredoka',ui-rounded,'SF Pro Rounded','Segoe UI',system-ui,sans-serif;
  -webkit-tap-highlight-color:transparent;-webkit-font-smoothing:antialiased}
button,input{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:3px solid var(--sun);outline-offset:2px}
#app{position:relative;z-index:1;height:100%;max-width:480px;margin:0 auto;display:flex;flex-direction:column}
.screen{flex:1;min-height:0;display:flex;flex-direction:column;padding:16px 16px 20px}
.scroll{overflow-y:auto}
h1{font-size:26px;font-weight:600;margin:0;line-height:1.2}
h2{font-size:20px;font-weight:600;margin:28px 0 12px}
p{line-height:1.45}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* welcome */
.brand{display:flex;align-items:center;gap:12px;margin-top:12px}
.brand svg{width:56px;height:56px}
.brand h1{font-size:32px;font-weight:700;letter-spacing:-.01em}
.lead{color:var(--muted);font-size:18px;margin:12px 0 0}
.pname{font-size:22px;font-weight:600}
.pmeta{color:var(--muted);font-size:15px}
.add{display:flex;gap:8px;margin-top:12px}
.add input{flex:1;min-width:0;padding:14px 16px;border-radius:14px;border:2px solid var(--line);
  background:var(--surface);font-size:18px}
.add button{padding:0 20px;border-radius:14px;border:0;background:var(--leaf);color:#fff;font-weight:600;font-size:18px}
.link{background:none;border:0;color:var(--leaf);font-size:17px;font-weight:500;padding:12px 0;text-align:left;text-decoration:underline;text-underline-offset:3px}
.link.danger{color:var(--muted)}
.link.danger.armed{color:var(--berry)}
.warn{color:var(--berry);font-size:15px}

/* home */
.bar{display:flex;align-items:center;gap:8px}
.bar h1{flex:1;text-align:center;font-size:22px}
.icon{width:44px;height:44px;border-radius:50%;border:0;background:var(--surface);font-size:22px;font-weight:600;
  display:grid;place-items:center;box-shadow:0 2px 0 var(--key-shadow);flex:none}
.today{margin:18px 0 8px}
.status{font-size:19px;margin:0 0 4px}
.streak{color:var(--muted);margin:0 0 14px;font-size:16px}
.cta{width:100%;padding:18px;border:0;border-radius:20px;background:var(--leaf);color:#fff;
  font-size:22px;font-weight:600;box-shadow:0 4px 0 color-mix(in srgb,var(--leaf) 60%,#000)}
.cta:active{transform:translateY(3px);box-shadow:0 1px 0 color-mix(in srgb,var(--leaf) 60%,#000)}
.cta.quiet{background:var(--surface);color:var(--ink);box-shadow:0 4px 0 var(--key-shadow)}
.forest{display:grid;grid-template-columns:repeat(12,1fr);gap:2px;margin-top:22px;
  background:var(--surface);border-radius:18px;padding:8px 6px 6px}
.hd{display:grid;place-items:center;font-size:13px;font-weight:600;color:var(--muted);aspect-ratio:1}
.hd.on{color:var(--leaf)}
.cell{aspect-ratio:1;border:0;padding:0;background:none;display:grid;place-items:center;border-radius:6px}
.cell svg{width:100%;height:100%}
.cell.locked{opacity:.28;pointer-events:none}
.cell:active{background:var(--bg)}
.legend{display:flex;flex-wrap:wrap;gap:6px 14px;margin-top:12px;color:var(--muted);font-size:14px}
.legend span{display:flex;align-items:center;gap:2px}
.legend svg{width:24px;height:24px}
.tables{color:var(--muted);font-size:15px;margin:16px 0 0}

/* play */
.play{padding-bottom:12px}
.pbar{display:flex;align-items:center;gap:12px}
.track{flex:1;height:12px;border-radius:6px;background:var(--surface);overflow:hidden}
.fill{height:100%;background:var(--leaf);border-radius:6px;transition:width .25s}
.count{font-size:15px;color:var(--muted);min-width:44px;text-align:right}
.stage{flex:1;min-height:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:6px;padding:8px 0}
.q{font-size:clamp(58px,19vw,92px);font-weight:600;margin:0;line-height:1;letter-spacing:-.02em}
.ans{min-width:150px;height:84px;margin-top:14px;padding:0 20px;border-radius:20px;border:3px solid var(--line);
  background:var(--surface);font-size:56px;font-weight:600;display:grid;place-items:center;line-height:1}
.ans.right{border-color:var(--leaf);background:color-mix(in srgb,var(--leaf) 18%,var(--surface))}
.ans.wrong{border-color:var(--berry)}
.ans.shake{animation:shake .3s}
@keyframes shake{25%{transform:translateX(-8px)}75%{transform:translateX(8px)}}
.msg{min-height:28px;margin:6px 0 0;font-size:20px;font-weight:500}
.quick{color:var(--sun);font-weight:600}
.fix{margin-top:10px;padding:12px 16px;border-radius:16px;background:var(--surface);max-width:340px}
.fix p{margin:4px 0}
.fix .eq-s{font-size:26px;font-weight:600}
.hint{color:var(--muted);font-size:18px}
.intro{display:flex;flex-direction:column;align-items:center;gap:10px;width:100%}
.intro svg{width:72px;height:72px}
.intro .tag{margin:0;font-size:18px;color:var(--muted)}
.intro .eq{font-size:clamp(46px,14vw,70px);font-weight:600;margin:0;line-height:1.1}
.intro .hint{max-width:320px;margin:0 0 14px}
.pad{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.pad.off{visibility:hidden}
.key{height:62px;border:0;border-radius:16px;background:var(--surface);font-size:30px;font-weight:600;
  box-shadow:0 3px 0 var(--key-shadow);touch-action:manipulation;user-select:none}
.key:active{transform:translateY(2px);box-shadow:0 1px 0 var(--key-shadow)}
.key.go{background:var(--leaf);color:#fff;font-size:22px;box-shadow:0 3px 0 color-mix(in srgb,var(--leaf) 60%,#000)}

/* summary */
.done{flex:1;display:flex;flex-direction:column;justify-content:center;gap:10px}
.done svg.big{width:110px;height:110px;align-self:center}
.done h1{text-align:center;font-size:34px}
.stats{display:flex;flex-direction:column;gap:8px;margin:14px 0 18px;padding:16px 20px;border-radius:18px;background:var(--surface);font-size:20px}
.stats b{font-weight:600}
.unlock{text-align:center;font-size:19px;color:var(--leaf);font-weight:500;margin:0 0 6px}
.done .cta.quiet{margin-top:6px}

/* sheet */
.sheet-bg{position:fixed;inset:0;background:rgba(0,0,0,.4);display:flex;align-items:flex-end;justify-content:center;z-index:10}
.sheet{width:100%;max-width:480px;max-height:85%;overflow-y:auto;background:var(--surface);border-radius:24px 24px 0 0;
  padding:22px 20px calc(24px + env(safe-area-inset-bottom,0px))}
.sheet h2{margin:0 0 10px}
.sheet p{margin:0 0 12px;font-size:17px}
.sheet .eq{font-size:44px;font-weight:600;margin:0}
.sheet ol{padding-left:22px;margin:0 0 12px}
.sheet li{margin-bottom:10px;line-height:1.45;font-size:16px}
.sheet .cta{margin-top:8px}
/* drifting snow, petals or leaves behind the app; each layer moves exactly one tile so the loop is seamless */
.sky{position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    radial-gradient(2.5px 2.5px at 30px 40px,var(--particle) 60%,transparent),
    radial-gradient(2px 2px at 140px 120px,var(--particle) 60%,transparent),
    radial-gradient(3px 3px at 90px 210px,var(--particle) 60%,transparent),
    radial-gradient(1.5px 1.5px at 220px 60px,var(--particle) 60%,transparent);
  background-size:180px 180px,260px 260px,320px 320px,240px 240px;
  animation:drift 24s linear infinite}
[data-season=spring] .sky,[data-season=autumn] .sky{
  background-image:
    radial-gradient(4px 2.5px at 40px 60px,var(--particle) 60%,transparent),
    radial-gradient(3.5px 2px at 200px 170px,var(--particle) 60%,transparent),
    radial-gradient(4px 3px at 120px 300px,var(--particle) 60%,transparent);
  background-size:260px 260px,340px 340px,420px 420px;opacity:.55;animation-duration:40s}
[data-season=summer] .sky{display:none}
@keyframes drift{
  from{background-position:0 0,0 0,0 0,0 0}
  to{background-position:40px 180px,-30px 260px,50px 320px,-20px 240px}}
.seasons{display:flex;flex-wrap:wrap;gap:8px}
.seasons button{border:2px solid transparent;border-radius:14px;background:var(--bg);padding:9px 13px;font-size:16px;box-shadow:0 2px 0 var(--key-shadow)}
.icon svg{width:24px;height:24px}
.set{padding-bottom:14px}
.set h3,.menu-row{font-size:17px;font-weight:600}
.set h3{margin:4px 0 10px}
.set .hint{margin:10px 0 0}
.menu{border-top:1px solid var(--line);margin-bottom:8px}
.menu-row{display:flex;justify-content:space-between;align-items:center;width:100%;padding:16px 2px;border:0;border-bottom:1px solid var(--line);background:none;text-align:left}
.menu-row .chev{color:var(--muted);font-size:22px;line-height:1}
.menu-row .pmeta{font-weight:400}
.seasons [aria-pressed=true]{border-color:var(--leaf);color:var(--leaf);font-weight:600}

/* install */
.install{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:8px;margin:14px 0 0;padding:12px 12px 12px 16px;border-radius:16px;
  background:color-mix(in srgb,var(--leaf) 14%,var(--surface));border:2px solid color-mix(in srgb,var(--leaf) 40%,transparent)}
.install p{margin:0;font-size:15px;line-height:1.35}
.install .go{border:0;border-radius:12px;background:var(--leaf);color:#fff;font-weight:600;padding:10px 14px;font-size:16px}
.install .x{border:0;background:none;width:36px;height:36px;font-size:22px;color:var(--muted)}
.steps{padding-left:22px}
.share{display:inline-block;width:20px;height:20px;vertical-align:-4px;color:var(--leaf)}
.update{position:fixed;left:50%;bottom:calc(16px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);z-index:20;
  background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:14px;font-size:15px}
.ver{color:var(--muted);font-size:13px;margin:6px 0 0}

/* forms */
.stack{display:flex;flex-direction:column;gap:12px;margin-top:22px}
.form{display:flex;flex-direction:column;gap:14px;margin-top:18px}
.form label{display:flex;flex-direction:column;gap:6px;font-size:17px;font-weight:500}
.form input:not([type=checkbox]){padding:14px 16px;border-radius:14px;border:2px solid var(--line);background:var(--surface);font-size:20px;width:100%}
.form input:focus{border-color:var(--leaf);outline:none}
.form .cta{margin-top:6px}
.field-hint{color:var(--muted);font-size:14px;font-weight:400}
label.check{flex-direction:row;align-items:flex-start;gap:10px;font-size:17px;font-weight:400;display:flex;line-height:1.35}
.check input{width:22px;height:22px;margin:0;flex:none;accent-color:var(--leaf)}
.err{color:var(--berry);font-size:16px;margin:0;font-weight:500}
.small{font-size:14px}
.center{text-align:center}
.cta:disabled{opacity:.5;cursor:default;transform:none}
.icon-gap{width:44px;flex:none}
.bar.start h1{text-align:left;padding-left:2px}
.pill{height:40px;padding:0 14px;border:0;border-radius:20px;background:var(--surface);font-size:15px;font-weight:500;box-shadow:0 2px 0 var(--key-shadow);flex:none}
.pill-gap{width:82px;flex:none}
.tabs{display:grid;grid-template-columns:1fr 1fr;gap:4px;margin-top:18px;padding:4px;border-radius:16px;background:var(--surface)}
.tabs button{border:0;background:none;padding:10px;border-radius:12px;font-size:17px;font-weight:500;color:var(--muted)}
.tabs [aria-selected=true]{background:var(--leaf);color:#fff}

/* parent */
.kids{list-style:none;margin:16px 0 0;padding:0;display:flex;flex-direction:column;gap:10px}
.kid{background:var(--surface);border-radius:18px;padding:14px 16px 6px}
.kid-hd{display:flex;justify-content:space-between;align-items:baseline;gap:8px;flex-wrap:wrap}
.kid p{margin:4px 0 0}
.kid-acts{display:flex;flex-wrap:wrap;gap:0 18px}
.kid-acts .link{font-size:15px;padding:10px 0}

/* forest pass */
.card-title{margin-top:8px}
.pass{margin-top:16px;padding:18px 20px;border-radius:20px;background:var(--surface);border:3px dashed var(--leaf)}
.pass-hd{display:flex;align-items:center;gap:12px}
.pass-hd svg{width:52px;height:52px}
.pass-label{margin:0;font-size:13px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--leaf)}
.pass-name{margin:0;font-size:24px;font-weight:600}
.pass dl{margin:14px 0 0;display:grid;grid-template-columns:auto 1fr;gap:6px 14px;align-items:baseline}
.pass dt{color:var(--muted);font-size:15px}
.pass dd{margin:0;font-size:18px;overflow-wrap:anywhere}
.pass dd.cred{font-size:22px;font-weight:600;letter-spacing:.01em}
.pass-rules{margin:14px 0 0;padding-left:20px;font-size:15px;color:var(--muted)}
.pass-rules li{margin-bottom:2px}

/* starting check */
.tgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:16px}
.tbtn{height:64px;border:3px solid transparent;border-radius:16px;background:var(--surface);font-size:28px;font-weight:600;box-shadow:0 3px 0 var(--key-shadow)}
.tbtn[aria-pressed=true]{background:color-mix(in srgb,var(--leaf) 20%,var(--surface));border-color:var(--leaf);color:var(--leaf)}
.play .tag{margin:0;color:var(--muted);font-size:17px}
.ans.given{border-color:var(--muted)}
.results{list-style:none;margin:6px 0 0;padding:0;display:flex;flex-direction:column;gap:6px}
.results li{display:grid;grid-template-columns:52px 70px 1fr;align-items:center;gap:8px;padding:10px 14px;border-radius:14px;background:var(--surface);font-size:17px}
.results .tname{font-weight:600;font-size:20px}
.results .pass-yes .tname{color:var(--leaf)}
.results .pass-no{color:var(--muted)}

@media print{
  body{background:#fff}
  #app>main>*:not(.pass){display:none!important}
  .pass{border-color:#3F8F3A;color:#000;background:#fff;max-width:420px}
}
@media (prefers-reduced-motion: reduce){*{animation:none!important;transition:none!important}}