/* LearnPip shared kit: the tokens and components every game uses.
   See docs/game-design-guide.md (section 8) for how to use them.
   Kit classes start with "lp-". A game's own board and scene styles live in
   the game file and should not reuse these names. */

/* ---------- Tokens ---------- */
:root{
  --ink:#1B2A6B;          /* text, outlines, hard shadows */
  --ink-soft:rgba(27,42,107,.15);
  --sky:#E6EEFF;          /* page */
  --paper:#FFFFFF;        /* cards, buttons, bubbles */
  --butter:#FFD84D;       /* highlight, the middle puzzle */
  --tang:#FF8A1F;         /* Challenge, focus ring, hint glow */
  --mint:#22B07D;         /* right answers */
  --mint-soft:#D3F4E5;
  --berry:#E5484D;        /* low time only */
  --berry-soft:#FFE1E2;
  --lilac:#B9A6FF;
  --frog:#4CC25E;         /* Pip's green: "Pip" in the big LearnPip logo */
  --fern:#2A8547;         /* darker Pip green for "Pip" on white (4.6:1) */
  /* Subject colours: the second word of every game logo, and the heading of its
     end popup. A game names its subject once, on <body data-lp-subject>. */
  --maths:var(--butter);  /* 9.6:1 against the ink outline */
  --english:var(--lilac); /* 6.3:1 against the ink outline */
  --lp-subject:var(--maths);
  --display:"Baloo 2", ui-rounded, "SF Pro Rounded", system-ui, sans-serif;
  --body:"Nunito", ui-rounded, system-ui, sans-serif;
  --shadow:5px 5px 0 var(--ink);
  --shadow-sm:3px 3px 0 var(--ink);
  --dots:radial-gradient(circle, rgba(27,42,107,.13) 1.2px, transparent 1.3px);
  --lp-width:620px;       /* content width; a game can override it */
}

/* ---------- Base ---------- */
[data-lp-subject="english"]{--lp-subject:var(--english)}
*{box-sizing:border-box;margin:0;padding:0}
html,body{min-height:100%}
body{
  font-family:var(--body);color:var(--ink);
  background-color:var(--sky);background-image:var(--dots);background-size:22px 22px;
  -webkit-tap-highlight-color:transparent;overflow-x:hidden;
}
button,select{font:inherit;color:inherit}
button{cursor:pointer;border:none;background:none}
:focus-visible{outline:3px solid var(--tang);outline-offset:3px}
.lp-hidden{display:none!important}
.lp-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- Layout ---------- */
/* A screen fills the viewport and centres one column of content */
.lp-screen{
  min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;align-items:center;
  padding:12px 14px calc(16px + env(safe-area-inset-bottom));
}
.lp-wrap{width:min(100%,var(--lp-width))}
.lp-start .lp-wrap{--lp-width:540px}

/* Top bar: All games on the left, grown-ups (and extras) on the right.
   z-index keeps it above big logos once the web font loads. */
.lp-topbar{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:14px;position:relative;z-index:2}
.lp-topbar-end{display:flex;align-items:center;gap:8px}

/* ---------- Text ---------- */
.lp-logo{
  font-family:var(--display);font-weight:800;line-height:.82;
  font-size:clamp(60px,18vw,104px);letter-spacing:-.02em;
  color:var(--paper);-webkit-text-stroke:3px var(--ink);paint-order:stroke fill;
  text-shadow:var(--shadow);
}
.lp-logo .lp-alt{color:var(--lp-subject)}
/* The LearnPip logo: the Pip sticker ([data-lp-badge], drawn by the kit) beside
   the wordmark. .lp-brand-hero is the big one on the home page; .lp-brand is the
   small one for header bars on white. "Pip" is in Pip's own green in both: frog
   inside the ink outline, the darker fern on white so it stays readable. */
.lp-brand-hero{display:flex;align-items:center;gap:clamp(10px,3vw,18px)}
.lp-brand-hero [data-lp-badge]{width:clamp(64px,18vw,112px);flex:none;display:block}
.lp-brand-hero .lp-logo{font-size:clamp(48px,13vw,92px);white-space:nowrap}
.lp-brand-hero .lp-logo .lp-alt{color:var(--frog)}
.lp-brand{display:inline-flex;align-items:center;gap:8px;font-family:var(--display);font-weight:800;font-size:21px;line-height:1;letter-spacing:-.01em;color:var(--ink);text-decoration:none;white-space:nowrap}
.lp-brand [data-lp-badge]{width:32px;height:32px;flex:none;display:block}
.lp-brand .lp-alt{color:var(--fern)}
[data-lp-badge] svg{display:block;width:100%;height:100%}
.lp-hero{display:flex;align-items:center;gap:18px;margin-bottom:18px}
.lp-how{font-size:17px;line-height:1.5;font-weight:700;margin-bottom:22px;max-width:46ch}
.lp-how span{display:block;font-weight:500;font-size:15px;margin-top:6px}
.lp-h2{font-family:var(--display);font-weight:800;font-size:22px;line-height:1.15;margin:0 0 8px}
.lp-prompt{width:100%;font-size:16px;font-weight:700;line-height:1.4;margin:12px 0 6px;min-height:2.8em}

/* ---------- Buttons ---------- */
/* Small button: Menu, Back, All games, Hint, New puzzle, Close */
.lp-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:5px;
  font-family:var(--display);font-weight:800;font-size:16px;line-height:1.2;white-space:nowrap;
  background:var(--paper);color:var(--ink);text-decoration:none;
  border:2.5px solid var(--ink);border-radius:12px;padding:5px 13px;box-shadow:var(--shadow-sm);
}
.lp-btn:active{transform:translate(2px,2px);box-shadow:1px 1px 0 var(--ink)}
.lp-btn:disabled{opacity:.4;cursor:default;transform:none;box-shadow:var(--shadow-sm)}
.lp-btn--danger{color:var(--berry);border-color:var(--berry);box-shadow:3px 3px 0 var(--berry)}

/* Card: white box with an outline and a hard shadow */
.lp-card{background:var(--paper);border:3px solid var(--ink);border-radius:18px;box-shadow:var(--shadow);padding:14px 16px}

/* Practice and Challenge */
.lp-modes{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.lp-mode{
  text-align:left;background:var(--paper);border:3px solid var(--ink);border-radius:18px;
  padding:14px 16px;box-shadow:var(--shadow);
}
.lp-mode:active{transform:translate(3px,3px);box-shadow:2px 2px 0 var(--ink)}
.lp-mode--challenge{background:var(--tang)}
.lp-mode strong{display:block;font-family:var(--display);font-weight:800;font-size:24px;line-height:1.1}
.lp-mode small{display:block;font-size:14px;font-weight:700;margin-top:4px;line-height:1.3}
.lp-best{margin-top:16px;font-weight:700;font-size:15px;min-height:1.4em}

/* Choice chips: <input type="radio" class="lp-sr" id=x><label class="lp-chip" for=x> */
.lp-chips{display:flex;flex-wrap:wrap;gap:8px}
.lp-chip{
  display:block;cursor:pointer;background:var(--paper);border:2.5px solid var(--ink);border-radius:999px;
  padding:5px 13px;font-weight:800;font-size:15px;line-height:1.3;
}
input:checked+.lp-chip{background:var(--ink);color:#fff}
input:focus-visible+.lp-chip{outline:3px solid var(--tang);outline-offset:3px}

/* ---------- Play screen ---------- */
.lp-hud{width:100%;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.lp-stats{display:flex;gap:6px;margin-left:auto;flex-wrap:wrap;justify-content:flex-end}
.lp-stat{
  background:var(--paper);border:2px solid var(--ink);border-radius:10px;
  padding:2px 10px;font-size:13px;font-weight:700;white-space:nowrap;
}
.lp-stat b{font-family:var(--display);font-size:18px;font-weight:800;margin-left:4px;font-variant-numeric:tabular-nums}
.lp-stat--time b{display:inline-block;min-width:3.2ch;text-align:right}
.lp-stat--low{background:var(--berry-soft);border-color:var(--berry);color:var(--berry)}
.lp-stat--penalty{animation:lp-pen .5s}
@keyframes lp-pen{30%{transform:scale(1.15);background:var(--berry);color:#fff}}
.lp-controls{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;align-items:center;margin-top:14px}

/* Number that flies from a solved puzzle into the middle one */
.lp-fly{
  position:fixed;z-index:50;pointer-events:none;border-radius:50%;
  display:grid;place-items:center;font-family:var(--display);font-weight:800;line-height:1;
  background:var(--lp-fly-bg,var(--mint));color:var(--lp-fly-fg,#fff);border:2.5px solid var(--ink);
}

/* Feedback effects, added with LP.replay(el, 'lp-wobble') */
/* !important so they win over a game's own idle animation (a floating lily pad) */
.lp-wobble{animation:lp-wobble .45s!important}
@keyframes lp-wobble{25%{transform:translateX(-6px) rotate(-8deg)}55%{transform:translate(6px,4px) rotate(8deg) scale(.92)}}
.lp-glow{animation:lp-glow .8s ease 2!important;box-shadow:0 0 0 5px var(--tang)!important}
@keyframes lp-glow{50%{transform:scale(1.1)}}
.lp-pop{animation:lp-pop .4s ease!important}
@keyframes lp-pop{0%{transform:scale(.5)}70%{transform:scale(1.12)}100%{transform:scale(1)}}

/* ---------- Overlays ---------- */
/* Full screen, same paper as the page: start screen, grown-ups panel */
.lp-overlay{
  position:fixed;inset:0;z-index:20;overflow-y:auto;
  background-color:var(--sky);background-image:var(--dots);background-size:22px 22px;
  display:flex;justify-content:center;padding:14px 16px 40px;
}
/* Pop-up over the game: end of Challenge, sticker book */
.lp-overlay--dim{background:rgba(27,42,107,.55);align-items:center;padding:16px}
.lp-popup{
  width:min(100%,440px);margin:auto;background:var(--paper);border:3px solid var(--ink);border-radius:24px;
  box-shadow:var(--shadow);padding:22px;text-align:center;
}
.lp-popup h2{font-family:var(--display);font-weight:800;font-size:clamp(34px,10vw,48px);line-height:1;
  color:var(--lp-subject);-webkit-text-stroke:2.5px var(--ink);paint-order:stroke fill;text-shadow:4px 4px 0 var(--ink);margin-bottom:12px}
.lp-popup p{font-size:17px;font-weight:700;line-height:1.4;margin-bottom:6px}
.lp-popup .lp-modes{margin-top:18px}
.lp-popup .lp-mode{text-align:center}

/* Sticker book (built by LP.openStickers) */
.lp-popup .lp-stickers-title{font-size:clamp(30px,9vw,40px)}
.lp-stickers{display:grid;grid-template-columns:repeat(6,1fr);gap:8px;margin:12px 0}
.lp-stickers span{font-size:30px;aspect-ratio:1;display:grid;place-items:center;background:var(--sky);border-radius:14px}
.lp-stickers .lp-locked{filter:grayscale(1) opacity(.25)}
.lp-popup .lp-btn{margin-top:6px}

/* ---------- Toast ---------- */
.lp-toast{
  position:fixed;left:50%;top:40%;transform:translate(-50%,-50%) scale(.8);z-index:60;
  background:var(--ink);color:#fff;font-family:var(--display);font-weight:800;font-size:18px;
  border-radius:16px;padding:8px 18px;text-align:center;max-width:86vw;
  opacity:0;pointer-events:none;transition:opacity .2s, transform .2s;
}
.lp-toast.lp-show{opacity:1;transform:translate(-50%,-50%) scale(1)}
.lp-toast--big{font-size:40px;background:var(--tang);color:var(--ink);border:3px solid var(--ink);box-shadow:var(--shadow)}

/* ---------- Grown-ups button (press and hold) ---------- */
.lp-gbtn{
  display:flex;align-items:center;gap:6px;padding:4px 6px;border-radius:999px;
  font-size:13px;font-weight:700;opacity:.55;transition:opacity .2s;
  touch-action:none;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;
}
.lp-gbtn:hover,.lp-gbtn:focus-visible,.lp-gbtn.lp-holding{opacity:1}
.lp-gi{
  --p:0;position:relative;flex:0 0 28px;height:28px;border-radius:50%;
  background:conic-gradient(var(--tang) calc(var(--p)*1turn),transparent 0);display:grid;place-items:center;
}
.lp-gi::before{content:"";position:absolute;inset:3px;border-radius:50%;background:var(--paper);border:2px solid var(--ink)}
.lp-gi b{position:relative;font-family:var(--display);font-weight:800;font-size:16px;line-height:1;padding-top:2px}
@media (max-width:420px){
  .lp-gbtn .lp-gtxt{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
  .lp-gbtn.lp-holding .lp-gtxt{position:static;width:auto;height:auto;clip:auto}
}

/* ---------- Grown-ups panel ---------- */
.lp-grown{z-index:30}
.lp-gpanel{width:min(100%,700px)}
.lp-ghead{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:6px}
.lp-ghead h2{font-family:var(--display);font-weight:800;font-size:28px;line-height:1.1}
.lp-gpanel section{background:var(--paper);border:2.5px solid var(--ink);border-radius:16px;padding:14px 16px;margin-top:16px}
.lp-gpanel h3{font-family:var(--display);font-weight:800;font-size:20px;line-height:1.2;margin-bottom:6px}
.lp-gpanel h4{font-family:var(--display);font-weight:800;font-size:17px;line-height:1.2;margin:12px 0 4px}
.lp-gpanel p,.lp-gpanel li{font-size:15px;line-height:1.45;font-weight:500}
.lp-gpanel p+p{margin-top:6px}
.lp-gpanel ul,.lp-gpanel ol{padding-left:20px}
.lp-gpanel li+li{margin-top:4px}
.lp-gpanel select{border:2px solid var(--ink);border-radius:10px;padding:3px 8px;background:#fff;font-weight:700}
.lp-gnote{font-size:14px!important;margin-top:8px}
.lp-tip{font-size:14px!important;font-style:italic;margin-top:4px}
.lp-yr{display:inline-block;background:var(--sky);border:1.5px solid var(--ink);border-radius:999px;
  padding:0 7px;font-size:12px;font-weight:800;margin:0 2px 2px 0;white-space:nowrap}
.lp-table{width:100%;border-collapse:collapse;font-size:14px}
.lp-table th,.lp-table td{text-align:left;vertical-align:top;padding:5px 6px;border-top:1.5px solid var(--ink-soft)}
.lp-table th{font-weight:800}
.lp-table thead th{border-top:none}
/* Curriculum map rows: <details class="lp-row"><summary>Name <span class="lp-yrs">chips</span></summary>…</details> */
.lp-row{border-top:1.5px solid var(--ink-soft);padding:6px 0}
.lp-row:first-of-type{border-top:none}
.lp-row summary{cursor:pointer;display:flex;flex-wrap:wrap;align-items:center;gap:4px 8px;font-weight:800;font-size:15px;list-style:none}
.lp-row summary::-webkit-details-marker{display:none}
.lp-row summary::before{content:"▸";width:1em;text-align:center}
.lp-row[open] summary::before{content:"▾"}
.lp-row summary .lp-yrs{margin-left:auto}
.lp-row.lp-current summary::after{content:"Picked now";font-size:12px;background:var(--butter);border:1.5px solid var(--ink);border-radius:999px;padding:0 7px}
.lp-row ul{margin:6px 0 4px}

/* ---------- Pip and friends: character picker (built by LP.characterPicker) ---------- */
.lp-chars{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.lp-char{display:flex;flex-direction:column;align-items:center;gap:2px;cursor:pointer;background:var(--paper);
  border:2.5px solid var(--ink);border-radius:16px;padding:6px 4px 4px;font-family:var(--display);font-weight:800;font-size:15px;line-height:1.1}
.lp-char svg{width:100%;max-width:70px;height:auto;display:block}
input:checked+.lp-char{background:var(--butter);box-shadow:var(--shadow-sm);transform:translate(-2px,-2px)}
input:focus-visible+.lp-char{outline:3px solid var(--tang);outline-offset:3px}

/* ---------- Grown-up pages: accounts, schools, families ---------- */
/* A white header bar with the small logo, then one white card per task.
   <header class="lp-gbar"><a class="lp-brand" href="/">…</a><div class="lp-gbar-end">…</div></header> */
.lp-gbar{position:sticky;top:0;z-index:5;background:var(--paper);border-bottom:3px solid var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px max(14px,calc((100% - var(--lp-width))/2))}
.lp-gbar-end{display:flex;align-items:center;gap:8px;min-width:0}
.lp-gbar-end small{font-weight:700;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lp-gpage{padding-top:22px}
.lp-gpage .lp-card+.lp-card{margin-top:16px}
.lp-gpage h1[tabindex="-1"]:focus{outline:none}
.lp-gpage h1{font-family:var(--display);font-weight:800;font-size:clamp(28px,7vw,36px);line-height:1.1;margin-bottom:12px}
.lp-card h2{font-family:var(--display);font-weight:800;font-size:22px;line-height:1.15;margin-bottom:6px}
.lp-card p{font-size:16px;line-height:1.45;font-weight:500}
.lp-card p+p{margin-top:8px}
.lp-card a:not(.lp-btn){color:var(--ink);font-weight:800}

/* Form fields: label above, 48px input, error text under it */
.lp-form{display:grid;gap:14px}
.lp-field{display:grid;gap:5px}
.lp-field>label,.lp-label{font-weight:800;font-size:15px}
.lp-hint{font-size:14px;font-weight:600;line-height:1.35;opacity:.8}
.lp-input{width:100%;min-height:48px;background:var(--paper);color:var(--ink);font:inherit;font-weight:700;font-size:17px;
  border:3px solid var(--ink);border-radius:12px;padding:8px 12px}
.lp-input:focus-visible{outline:3px solid var(--tang);outline-offset:2px}
.lp-input[aria-invalid="true"]{border-color:var(--berry)}
/* An input with a Show/Hide button inside its right edge */
.lp-reveal{position:relative}
.lp-reveal .lp-input{padding-right:76px}
/* A code from an email: big, spaced digits */
.lp-code{font-family:var(--display);font-size:26px;letter-spacing:.3em;max-width:16ch}
.lp-reveal [data-lp-reveal]{position:absolute;right:8px;top:50%;transform:translateY(-50%);
  border:2px solid var(--ink);border-radius:8px;padding:2px 9px;font-weight:800;font-size:14px;background:var(--paper)}
.lp-error{font-size:14px;font-weight:800;color:var(--berry)}
.lp-error::before{content:"! ";}
/* Tick box with its text beside it */
.lp-check{display:flex;gap:10px;align-items:flex-start;font-weight:700;font-size:15px;line-height:1.4;cursor:pointer}
.lp-check input{flex:0 0 auto;width:24px;height:24px;margin-top:1px;accent-color:var(--ink)}
/* Message box at the top of a form */
.lp-msg{border:2.5px solid var(--ink);border-radius:12px;padding:10px 12px;font-weight:700;font-size:15px;line-height:1.4}
.lp-msg--error{background:var(--berry-soft)}
.lp-msg--ok{background:var(--mint-soft)}
.lp-msg--info{background:var(--butter)}
/* The one main button on a screen */
.lp-btn--primary{width:100%;background:var(--tang);font-size:21px;padding:9px 16px;border-width:3px;border-radius:16px}
.lp-btn--primary:disabled{opacity:.6}
.lp-links{display:flex;flex-wrap:wrap;justify-content:center;gap:6px 16px;font-weight:700;font-size:15px}
.lp-links a,.lp-linkbtn{color:var(--ink);font-weight:800;text-decoration:underline}
.lp-linkbtn{padding:0;font-size:inherit}
.lp-linkbtn:disabled{opacity:.5;cursor:default;text-decoration:none}

/* Big choice cards: the login hub and "Who's playing?" */
.lp-picks{display:grid;gap:14px}
.lp-pick{display:flex;align-items:center;gap:14px;text-align:left;width:100%;text-decoration:none;color:var(--ink);
  background:var(--paper);border:3px solid var(--ink);border-radius:18px;padding:12px 16px;box-shadow:var(--shadow)}
.lp-pick:active{transform:translate(3px,3px);box-shadow:2px 2px 0 var(--ink)}
.lp-pick strong{display:block;font-family:var(--display);font-weight:800;font-size:24px;line-height:1.05}
.lp-pick small{display:block;font-size:15px;font-weight:700;margin-top:3px;line-height:1.3}
.lp-pick-art{flex:0 0 64px;height:60px;display:grid;place-items:center}
.lp-pick-art svg{width:100%;height:100%;display:block}
.lp-pick-ico{flex:0 0 58px;height:58px;border:3px solid var(--ink);border-radius:50%;display:grid;place-items:center;
  font-family:var(--display);font-weight:800;font-size:24px;background:var(--sky)}

/* A child (or class) row in a grown-up list */
.lp-kids{display:grid;gap:10px;list-style:none}
.lp-kid{display:flex;align-items:center;gap:12px;border:2.5px solid var(--ink);border-radius:14px;padding:8px 12px;background:var(--paper)}
.lp-kid-av{flex:0 0 52px;height:48px}
.lp-kid-av svg{width:100%;height:100%;display:block}
.lp-kid b{display:block;font-family:var(--display);font-weight:800;font-size:21px;line-height:1.05;overflow-wrap:anywhere}
.lp-kid .lp-yr{margin-top:3px}
.lp-kid-stars{display:block;font-size:14px;font-weight:700;opacity:.85;margin-top:3px}
.lp-kid-end{margin-left:auto;display:flex;flex-direction:column;align-items:flex-end;gap:4px}
.lp-add{display:block;width:100%;border:2.5px dashed var(--ink);border-radius:14px;padding:12px;text-align:center;font-weight:800;font-size:16px;background:transparent}

.lp-play{background:var(--tang)}

/* The player chip: who's playing, with a menu (Switch player, Grown-ups, Log out) */
.lp-player{position:relative}
.lp-player-btn{display:inline-flex;align-items:center;gap:6px;background:var(--paper);border:2.5px solid var(--ink);border-radius:999px;
  padding:3px 12px 3px 3px;box-shadow:var(--shadow-sm);font-family:var(--display);font-weight:800;font-size:16px;line-height:1.2;max-width:60vw}
.lp-player-btn span:not(.lp-player-av){overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
/* The character sits centred in a round sky badge at the chip's left end */
.lp-player-av{flex:0 0 32px;width:32px;height:32px;border-radius:50%;background:var(--sky);border:2px solid var(--ink);
  display:grid;place-items:center;overflow:hidden}
.lp-player-av svg{width:26px;height:24px;display:block}
.lp-menu{position:absolute;right:0;top:calc(100% + 8px);z-index:10;min-width:170px;background:var(--paper);border:2.5px solid var(--ink);
  border-radius:14px;box-shadow:var(--shadow-sm);padding:6px;display:grid;gap:2px}
.lp-menu[hidden]{display:none}
.lp-menu a,.lp-menu button{display:block;text-align:left;padding:8px 10px;border-radius:9px;font-weight:800;font-size:16px;color:var(--ink);text-decoration:none}
.lp-menu a:hover,.lp-menu button:hover,.lp-menu a:focus-visible,.lp-menu button:focus-visible{background:var(--sky)}

/* ---------- Small screens and motion ---------- */
@media (max-width:420px){
  .lp-modes{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after,.lp-wobble,.lp-glow,.lp-pop{animation:none!important;transition:none!important}
}