/* style.css - shared look for the Math Games hub and the three games.
   Matches the tone of /var/www/html/math/count10.html: same gradient,
   same white rounded card, same purple/green/orange accents. */

:root{
  --purple:#6c5ce7;
  --purple-2:#a29bfe;
  --green:#00b894;
  --green-2:#00cec9;
  --orange:#ff9f43;
  --yellow:#fdcb6e;
  --blue:#0984e3;
  --red:#b23a2f;
  --soft-red:#ff7675;
  --ink:#2d3436;
  --muted:#636e72;
  --line:#dfe6e9;
}

*{margin:0;padding:0;box-sizing:border-box}

html{font-size:20px}

body.shell{
  font-family:'Segoe UI',system-ui,-apple-system,sans-serif;
  background:linear-gradient(135deg,#a8edea 0%,#fed6e3 100%);
  background-attachment:fixed;
  min-height:100vh;
  padding:88px 20px 40px;
  display:flex;
  justify-content:center;
  align-items:flex-start;
  color:var(--ink)
}

body.shell.centered{align-items:center}

/* ---------- page shell ---------- */
.card{
  background:#fff;
  border-radius:24px;
  padding:28px 26px;
  width:100%;
  box-shadow:0 20px 60px rgba(0,0,0,.12)
}
.card.hub{max-width:780px;text-align:center}
.card.game{max-width:940px}

.game-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  border-bottom:2px solid #f0f0f0;
  padding-bottom:14px;
  margin-bottom:10px;
  text-align:left
}
.game-head h1{font-size:1.7rem;color:var(--ink)}
.hub h1{font-size:2.6rem;color:var(--ink);margin-bottom:8px}
.subtitle{color:var(--muted);font-size:1.1rem;margin-bottom:26px}

.back-link{
  display:inline-flex;
  align-items:center;
  min-height:56px;
  padding:12px 20px;
  border-radius:14px;
  background:#f4f2ff;
  color:var(--purple);
  font-size:1rem;
  font-weight:bold;
  text-decoration:none
}
.back-link:hover{background:#e9e5ff}

/* ---------- language switcher ---------- */
.lang-switch{
  position:fixed;
  top:14px;
  right:14px;
  z-index:50;
  display:flex;
  align-items:center;
  gap:8px;
  background:rgba(255,255,255,.94);
  border-radius:18px;
  padding:8px 10px;
  box-shadow:0 6px 20px rgba(0,0,0,.12)
}
.lang-switch .lang-label{font-size:.8rem;font-weight:bold;color:var(--muted);padding:0 4px}
.lang-btn{
  font:inherit;
  font-size:.8rem;
  font-weight:bold;
  min-height:48px;
  min-width:74px;
  padding:8px 14px;
  border:2px solid var(--line);
  border-radius:12px;
  background:#fff;
  color:var(--muted);
  cursor:pointer
}
.lang-btn:hover{border-color:var(--purple-2);color:var(--purple)}
.lang-btn.active{
  background:linear-gradient(135deg,var(--purple),var(--purple-2));
  color:#fff;
  border-color:transparent
}

/* ---------- big buttons ---------- */
.hub-list{
  display:flex;
  flex-direction:column;
  gap:16px;
  align-items:stretch
}
.hub-btn{
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:6px;
  min-height:104px;
  padding:18px 26px;
  border-radius:20px;
  background:#fff;
  border:3px solid var(--line);
  border-left-width:14px;
  text-decoration:none;
  color:var(--ink);
  box-shadow:0 6px 20px rgba(0,0,0,.08);
  transition:transform .22s,box-shadow .22s,border-color .22s;
  text-align:left
}
.hub-btn:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(108,92,231,.25)}
.hub-btn .hub-text{font-size:1.5rem;font-weight:bold}
.hub-btn .hub-desc{font-size:.95rem;color:var(--muted)}
.b-blocks{border-left-color:var(--orange)}
.b-frog{border-left-color:var(--green)}
.b-cookies{border-left-color:var(--purple)}

.btn{
  font:inherit;
  font-size:1.15rem;
  font-weight:bold;
  min-height:68px;
  padding:12px 34px;
  border:none;
  border-radius:18px;
  cursor:pointer;
  color:#fff;
  transition:transform .2s,box-shadow .2s
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-hint{background:linear-gradient(135deg,var(--orange),var(--yellow));color:var(--ink);box-shadow:0 4px 14px rgba(255,159,67,.35)}
.btn-go{background:linear-gradient(135deg,var(--purple),var(--purple-2));box-shadow:0 6px 20px rgba(108,92,231,.35)}
.btn-again{background:linear-gradient(135deg,var(--green),var(--green-2));box-shadow:0 6px 20px rgba(0,184,148,.35)}
.btn-ghost{background:#dfe6e9;color:var(--muted)}

.controls{
  display:flex;
  gap:14px;
  align-items:center;
  justify-content:center;
  flex-wrap:wrap;
  min-height:96px;
  margin-top:6px;
  padding-top:18px;
  border-top:2px solid #f0f0f0
}

/* ---------- hud / stage ---------- */
.hud{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin:12px 0 8px}
.hud-item{
  display:flex;
  align-items:center;
  gap:8px;
  min-height:52px;
  padding:8px 18px;
  border-radius:14px;
  background:#f8f9fa;
  font-size:1rem;
  font-weight:bold;
  color:var(--muted)
}
.hud-item b{color:var(--purple);font-size:1.3rem}

.stage{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:flex-start;
  gap:10px;
  min-height:400px;
  padding:8px 0
}
.play-area{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:10px;
  width:100%
}
.prompt{font-size:1.6rem;font-weight:bold;text-align:center;color:var(--ink)}
.subprompt{font-size:1.05rem;color:var(--muted);text-align:center;min-height:32px}
.hint-line{color:var(--orange);font-weight:bold}
.expression{font-size:2.8rem;font-weight:bold;color:var(--purple);letter-spacing:.06em}
.answer-row{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap;margin:8px 0}
.answer-label{font-size:1.15rem;font-weight:bold;color:var(--muted)}
.answer-input{
  font:inherit;
  font-size:2.2rem;
  font-weight:bold;
  text-align:center;
  width:180px;
  min-height:74px;
  border:3px solid var(--line);
  border-radius:18px;
  color:var(--ink);
  outline:none;
  transition:border-color .25s,background .25s
}
.answer-input:focus{border-color:#74b9ff;box-shadow:0 0 0 4px rgba(116,185,255,.2)}
.answer-input.ok{border-color:var(--green);background:#e6fbf3}
.answer-input.try{border-color:var(--soft-red);background:#fff3f0}

.keypad{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:10px;
  width:100%;
  max-width:560px;
  margin:6px auto 0
}
.key{
  font:inherit;
  font-size:1.4rem;
  font-weight:bold;
  min-height:68px;
  border:3px solid var(--line);
  border-radius:16px;
  background:#fff;
  color:var(--ink);
  cursor:pointer;
  transition:border-color .2s,background .2s
}
.key:hover{border-color:var(--purple-2);background:#f7f6ff}
.key:active{background:#efecff}
.key-clear{grid-column:1/-1;font-size:1.1rem;min-height:64px;background:#f4f2ff;color:var(--purple);border-color:#e0daff}

/* ---------- number blocks ---------- */
.blocks-wrap{
  display:flex;
  flex-wrap:wrap;
  gap:26px;
  align-items:flex-end;
  justify-content:center;
  min-height:200px;
  padding:10px 0
}
.blocks-tens{display:flex;gap:8px;align-items:flex-end}
.blocks-ones{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;align-content:flex-end;max-width:200px}
.ten-rod{
  position:relative;
  width:30px;
  height:150px;
  border-radius:8px;
  background:repeating-linear-gradient(to bottom,#ffb26b 0 13px,#e1873a 13px 15px);
  box-shadow:0 4px 10px rgba(0,0,0,.15);
  display:flex;
  align-items:center;
  justify-content:center
}
.one-cube{
  position:relative;
  width:30px;
  height:30px;
  border-radius:8px;
  background:linear-gradient(135deg,#74b9ff,#0984e3);
  box-shadow:0 4px 10px rgba(0,0,0,.15);
  display:flex;
  align-items:center;
  justify-content:center
}
.block-num{
  visibility:hidden;
  font-size:.6rem;
  font-weight:bold;
  color:#fff;
  text-shadow:0 1px 2px rgba(0,0,0,.35)
}
.show-count .block-num{visibility:visible}

/* ---------- frog + number line ---------- */
.numberline{position:relative;width:100%;padding:86px 12px 46px;margin-top:4px}
.line-track{
  display:flex;
  justify-content:space-between;
  height:72px;
  border-bottom:6px solid var(--line)
}
.tick{
  position:relative;
  flex:1 1 0;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:flex-end;
  gap:6px;
  min-height:64px;
  padding:0;
  border:none;
  background:none;
  font:inherit;
  cursor:pointer
}
.tick-dot{width:6px;height:20px;border-radius:3px;background:var(--line);transition:background .2s,height .2s}
.tick-num{position:absolute;bottom:-34px;font-size:.75rem;font-weight:bold;color:var(--muted)}
/* Landmarks under the line, so 5 / 10 / 15 / 20 are easy to find:
   the fives carry a blue dot and a blue number, the ten is the big purple
   badge. These rules sit BEFORE .correct/.try on purpose, so a tapped mark
   still wins over the landmark colour. */
.tick.five .tick-dot{background:#8fb9e8}
.tick.five .tick-num{color:var(--blue)}
.tick.five::before{
  content:'';
  position:absolute;
  left:50%;
  bottom:-16px;
  transform:translateX(-50%);
  width:9px;
  height:9px;
  border-radius:50%;
  background:var(--blue)
}
.tick.ten .tick-dot{background:var(--purple);height:30px}
.tick.ten .tick-num{
  left:50%;
  bottom:-42px;
  transform:translateX(-50%);
  background:var(--purple);
  color:#fff;
  font-size:.95rem;
  line-height:1.15;
  padding:2px 8px;
  border-radius:999px;
  box-shadow:0 3px 8px rgba(108,92,231,.45)
}
.tick:hover .tick-dot{background:var(--purple-2)}
.tick.correct .tick-dot{background:var(--green);height:34px}
.tick.correct .tick-num{color:var(--green)}
.tick.try .tick-dot{background:var(--soft-red);height:30px}
.tick.try .tick-num{color:var(--red)}
.tick.ten.correct .tick-num{color:#fff;background:var(--green)}
.tick.ten.try .tick-num{color:#fff;background:var(--soft-red)}
.tick:disabled{cursor:default}
.frog{
  position:absolute;
  top:40px;
  left:0;
  width:56px;
  height:46px;
  z-index:5;
  pointer-events:none;
  transition:left .32s cubic-bezier(.34,1.4,.64,1)
}
.frog-body{
  position:absolute;
  left:0;
  bottom:0;
  width:56px;
  height:34px;
  border-radius:20px 20px 16px 16px;
  background:linear-gradient(135deg,#55efc4,#00b894);
  box-shadow:0 6px 14px rgba(0,0,0,.2)
}
.frog-eye{
  position:absolute;
  top:0;
  width:22px;
  height:22px;
  border-radius:50%;
  background:#fff;
  border:3px solid var(--green)
}
.frog-eye.left{left:5px}
.frog-eye.right{right:5px}
.frog-eye::after{
  content:'';
  position:absolute;
  top:5px;
  left:5px;
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--ink)
}
.frog.hop{animation:hop .32s ease}
/* Green guide line from the frog down to the number line, so the tick the
   frog stands on is obvious at a glance. It glides with the frog (same
   transition) but does not lift during a hop, and its tip sits on the rule. */
.frog-guide{
  position:absolute;
  top:86px;
  left:12px;
  width:6px;
  height:72px;
  border-radius:3px;
  background:var(--green);
  /* Deliberately no z-index: the guide stays in tree order, so the ticks -
     which come later in the DOM - paint on top and their grey, red or green
     mark is never hidden. */
  pointer-events:none;
  transition:left .32s cubic-bezier(.34,1.4,.64,1)
}
.frog-guide::after{
  content:'';
  position:absolute;
  left:50%;
  bottom:0;
  transform:translateX(-50%);
  width:0;
  height:0;
  border-left:9px solid transparent;
  border-right:9px solid transparent;
  border-top:10px solid var(--green)
}
.hop-count{
  position:absolute;
  top:8px;
  left:0;
  width:56px;
  text-align:center;
  font-size:1rem;
  font-weight:bold;
  color:var(--green);
  opacity:0;
  transition:opacity .2s
}
.hop-count.on{opacity:1}

/* ---------- cookie plates ---------- */
.cookies-area{display:flex;flex-direction:column;align-items:center;gap:14px;width:100%}
.plates{display:flex;flex-wrap:wrap;gap:18px;justify-content:center;align-items:flex-start;min-height:150px}
.plate{
  position:relative;
  width:118px;
  height:118px;
  padding:10px;
  border-radius:50%;
  border:6px solid var(--line);
  background:radial-gradient(circle at 50% 45%,#ffffff,#eef1f4);
  box-shadow:inset 0 3px 10px rgba(0,0,0,.06);
  display:flex;
  flex-wrap:wrap;
  gap:3px;
  align-content:center;
  justify-content:center
}
.plate-num{
  position:absolute;
  bottom:-30px;
  left:0;
  width:100%;
  text-align:center;
  font-size:.8rem;
  font-weight:bold;
  color:var(--muted)
}
.cookie{
  width:20px;
  height:20px;
  border-radius:50%;
  background:radial-gradient(circle at 35% 30%,#e0a25e,#a86220);
  box-shadow:inset -2px -2px 4px rgba(0,0,0,.25);
  animation:popIn .28s ease
}
.cookie.leftover{background:radial-gradient(circle at 35% 30%,#cfcfcf,#8d8d8d)}
.cookie-pool{
  display:flex;
  flex-wrap:wrap;
  gap:6px;
  align-content:center;
  justify-content:center;
  min-height:96px;
  width:100%;
  max-width:360px;
  padding:12px;
  border-radius:20px;
  border:3px dashed var(--line);
  background:#f8f9fa
}
.leftover-zone{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:52px;
  font-size:1rem;
  font-weight:bold;
  color:var(--muted)
}
.leftover-zone .tag{
  background:#f1f2f6;
  border-radius:14px;
  padding:8px 16px
}

/* ---------- feedback states ---------- */
.feedback{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:12px;
  min-height:80px;
  margin:12px 0 4px;
  padding:12px 22px;
  border-radius:18px;
  border:3px solid transparent;
  font-size:1.15rem;
  font-weight:bold;
  text-align:left;
  background:transparent;
  color:transparent
}
.feedback.ok{background:#e6fbf3;border-color:var(--green);color:#00795f}
.feedback.try{background:#fff3f0;border-color:#ffc9bf;color:var(--red)}
.fb-icon{
  flex:0 0 40px;
  width:40px;
  height:40px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1.3rem;
  visibility:hidden
}
.feedback.ok .fb-icon{visibility:visible;background:var(--green);color:#fff}
.feedback.try .fb-icon{visibility:visible;background:var(--soft-red);color:#fff}
.fb-text{flex:0 1 auto}

/* ---------- round end ---------- */
.round-end{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;min-height:340px}
.big-score{font-size:2.4rem;font-weight:bold;color:var(--purple)}
.is-hidden{visibility:hidden}
.gone{display:none}

/* ---------- animations ---------- */
@keyframes fadeInUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}
@keyframes popIn{0%{transform:scale(0);opacity:0}70%{transform:scale(1.15)}100%{transform:scale(1);opacity:1}}
@keyframes hop{0%{transform:translateY(0)}45%{transform:translateY(-16px)}100%{transform:translateY(0)}}
.stage>*{animation:fadeInUp .4s ease}

/* ---------- responsive (down to tablet) ---------- */
/* On anything narrower the 21 marks get too close together for the 10 badge
   to fit between them, so the ten switches to a plain purple number plus a
   bigger purple dot under the line - still the loudest mark, no overlap. */
@media (max-width:900px){
  html{font-size:19px}
  .tick.ten .tick-num{
    background:none;
    color:var(--purple);
    box-shadow:none;
    border-radius:0;
    padding:0;
    font-size:.85rem;
    bottom:-34px
  }
  .tick.ten::before{
    content:'';
    position:absolute;
    left:50%;
    bottom:-18px;
    transform:translateX(-50%);
    width:13px;
    height:13px;
    border-radius:50%;
    background:var(--purple);
    box-shadow:0 0 0 3px rgba(108,92,231,.22)
  }
  /* Without the badge the ten is a plain purple number, so the tapped state
     has to change the colour only - not put a pill back. */
  .tick.ten.correct .tick-num{color:var(--green);background:none}
  .tick.ten.try .tick-num{color:var(--red);background:none}
  .plate{width:104px;height:104px}
  .cookie{width:18px;height:18px}
  .card.game{max-width:100%}
}
@media (max-width:760px){
  html{font-size:18px}
  body.shell{padding:96px 12px 30px}
  .card{padding:20px 16px;border-radius:20px}
  .hub h1{font-size:2rem}
  .game-head h1{font-size:1.4rem}
  .hub-btn{min-height:88px;padding:14px 18px}
  .hub-btn .hub-text{font-size:1.3rem}
  .ten-rod{width:24px;height:120px}
  .one-cube{width:24px;height:24px}
  .blocks-ones{max-width:170px}
  .tick-num{font-size:.68rem}
  .lang-switch{gap:6px;padding:6px}
  .lang-btn{min-width:64px;min-height:46px;padding:6px 10px;font-size:.75rem}
  .lang-switch .lang-label{display:none}
}