/* ══════════════════════════════════════════════════════════════
   Vivaan Quiz, Shared Styles (Sunny Playground theme)
   Used by all chapter files (math-ch1.html … math-ch11.html)
   Design tokens mirror /vivaan/index.html for a unified look.
   ══════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Fredoka:wght@400;500;600;700&family=Nunito:wght@400;600;700;800;900&display=swap');

:root{
  --radius-card: 26px;
  --radius-pill: 999px;
  --ease-pop: cubic-bezier(.34,1.56,.64,1);

  --bg: #FFF7E6;
  --ink: #2B1B4A;
  --ink-2: #5B4B7E;
  --muted: #8A7AAB;
  --card: #FFFFFF;
  --card-border: #2B1B4A;

  --coral: #FF6B6B;
  --yellow: #FFC93C;
  --green: #4CC38A;
  --sky: #4BA8FF;
  --grape: #A06CD5;
  --peach: #FFB07A;
  --red: #FF6B6B;
  --blue: #4BA8FF;
  --purple: #A06CD5;
  --accent: var(--coral);

  --display: 'Fredoka', system-ui, sans-serif;
}

*{ box-sizing:border-box; margin:0; padding:0; }
body{
  font-family: 'Nunito', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  color: var(--ink);
  overflow-x: hidden;
  background:
    radial-gradient(ellipse at 0% 0%, #FFD8A8 0%, transparent 50%),
    radial-gradient(ellipse at 100% 0%, #FFE1E1 0%, transparent 50%),
    radial-gradient(ellipse at 50% 100%, #D7F0FF 0%, transparent 55%),
    var(--bg);
}
button{ font-family: inherit; cursor: pointer; border: none; background: none; }

.wrap{ position: relative; z-index: 1; max-width: 880px; margin: 0 auto; padding: 20px 18px 90px; }

/* ── Top nav ─────────────────────────────────────────────────── */
.topnav{
  display:flex; align-items:center; gap:10px; margin-bottom: 18px;
  flex-wrap: wrap;
}
.back-btn{
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 16px; border-radius: var(--radius-pill);
  background: var(--card); border: 2px solid var(--card-border);
  color: var(--ink); font-weight: 800; font-size: 13px;
  box-shadow: 0 3px 0 var(--card-border);
  text-decoration: none; transition: all .15s var(--ease-pop);
  font-family: 'Nunito', sans-serif;
}
.back-btn:hover{ transform: translateY(-2px); box-shadow: 0 5px 0 var(--card-border); }
.topnav-title{
  flex: 1; text-align: center;
  font-family: var(--display); font-weight: 600;
  font-size: 18px; color: var(--ink); letter-spacing: -0.01em;
  line-height: 1.1;
}
.timer-pill{
  padding: 8px 16px; border-radius: var(--radius-pill);
  background: var(--card); border: 2px solid var(--card-border);
  color: var(--ink); font-weight: 900; font-size: 13px;
  box-shadow: 0 3px 0 var(--card-border);
  display:inline-flex; align-items:center; gap: 6px;
}

/* ── Level toggle ────────────────────────────────────────────── */
.level-row{ display:flex; justify-content:center; margin-bottom: 14px; }
.level-toggle{
  display:flex; background: var(--card);
  border: 2px solid var(--card-border); border-radius: var(--radius-pill);
  padding: 4px; box-shadow: 0 3px 0 var(--card-border);
  gap: 4px;
}
.lvl-btn{
  padding: 8px 22px; border-radius: var(--radius-pill);
  font-size: 13px; font-weight: 800; color: var(--ink-2);
  font-family: 'Nunito', sans-serif;
  transition: all .15s var(--ease-pop);
}
.lvl-btn.beg.active{ background: var(--sky); color: #fff; box-shadow: 0 2px 0 var(--card-border); }
.lvl-btn.pro.active{ background: var(--coral); color: #fff; box-shadow: 0 2px 0 var(--card-border); }

/* ── Set pills ───────────────────────────────────────────────── */
.set-row{ display:flex; gap:8px; justify-content:center; flex-wrap:wrap; margin-bottom: 18px; }
.set-pill{
  padding: 7px 15px; border-radius: var(--radius-pill);
  background: var(--card); border: 2px solid var(--card-border);
  font-size: 12px; font-weight: 800; color: var(--ink);
  font-family: 'Nunito', sans-serif;
  box-shadow: 0 2px 0 var(--card-border);
  transition: transform .15s var(--ease-pop);
}
.set-pill:hover{ transform: translateY(-1px); }
.set-pill.active{ background: var(--yellow); color: var(--ink); }
.set-pill.done{ background: color-mix(in oklab, var(--green), transparent 80%); color: var(--green); border-color: var(--green); }
.set-pill.done.active{ background: var(--green); color: #fff; border-color: var(--card-border); }

/* ── Layout ──────────────────────────────────────────────────── */
.quiz-layout{ display: flex; gap: 14px; align-items: flex-start; }
.sidebar{
  flex-shrink:0; width:46px;
  display:flex; flex-direction:column; gap:6px;
  background: var(--card); border: 2px solid var(--card-border);
  border-radius: 18px; padding: 9px 5px;
  box-shadow: 0 3px 0 var(--card-border);
}
.qb{
  width:36px; height:36px; border-radius: 10px;
  background: rgba(43,27,74,0.05);
  border: 1.5px solid rgba(43,27,74,0.12);
  display:flex; align-items:center; justify-content:center;
  font-size: 11px; font-weight: 800; color: var(--ink-2);
  transition: all .2s var(--ease-pop);
}
.qb.cur{
  background: var(--yellow); color: var(--ink);
  border-color: var(--card-border);
  animation: qpulse 1.4s infinite;
}
.qb.ok{ background: color-mix(in oklab, var(--green), transparent 75%); border-color: var(--green); color: var(--green); }
.qb.no{ background: color-mix(in oklab, var(--coral), transparent 75%); border-color: var(--coral); color: var(--coral); }
@keyframes qpulse{
  0%,100%{ box-shadow: 0 0 0 0 rgba(255,201,60,.55); }
  50%    { box-shadow: 0 0 0 7px rgba(255,201,60,0); }
}

/* ── Quiz card ───────────────────────────────────────────────── */
.qcard{
  flex: 1; min-width: 0;
  background: var(--card);
  border: 2.5px solid var(--card-border);
  border-radius: var(--radius-card);
  padding: 22px 20px;
  box-shadow: 0 6px 0 var(--card-border);
  text-align: center;
}
.qcard > .card-meta,
.qcard > #quizBody > .char-panel{ text-align: initial; }
#quizBody{ text-align: center; }
.card-meta{
  display:flex; align-items:center; justify-content:space-between;
  margin-bottom: 14px; flex-wrap: wrap; gap: 8px;
}
.topic-tag{
  padding: 4px 12px; border-radius: var(--radius-pill);
  background: color-mix(in oklab, var(--grape), transparent 82%);
  color: var(--grape); border: 1.5px solid color-mix(in oklab, var(--grape), transparent 60%);
  font-size: 11px; font-weight: 900;
  text-transform: uppercase; letter-spacing: .08em;
}
.score-badge{
  padding: 5px 14px; border-radius: var(--radius-pill);
  background: color-mix(in oklab, var(--green), transparent 85%);
  border: 2px solid color-mix(in oklab, var(--green), transparent 55%);
  color: var(--green); font-weight: 900; font-size: 12px;
}
.pbar-wrap{
  height: 10px; border-radius: var(--radius-pill);
  background: color-mix(in oklab, var(--card-border), transparent 92%);
  border: 2px solid var(--card-border);
  margin-bottom: 18px; overflow: hidden;
}
.pbar{
  height: 100%;
  background: linear-gradient(90deg, var(--coral), var(--yellow) 50%, var(--green));
  transition: width .45s ease;
}
.qnum{
  font-size: 11px; font-weight: 800; color: var(--muted);
  text-transform: uppercase; letter-spacing: .08em; margin-bottom: 6px;
  text-align: center;
}
.qtext{
  font-family: var(--display); font-weight: 600;
  font-size: clamp(18px,3.2vw,24px);
  line-height: 1.3; margin: 0 auto 18px; max-width: 640px;
  min-height: 40px; color: var(--ink); letter-spacing: -0.01em;
  text-align: center;
}
#interactionArea{ text-align: center; }
#interactionArea .mcq-grid,
#interactionArea .tf-wrap,
#interactionArea .tapall-grid,
#interactionArea .sort-slots,
#interactionArea .sort-tiles,
#interactionArea .fillin-opts,
#interactionArea .match-columns,
#interactionArea .classify-cats,
#interactionArea .classify-pool,
#interactionArea .numpad{ margin-left: auto; margin-right: auto; }
#interactionArea .tapall-wrap,
#interactionArea .sort-wrap,
#interactionArea .fillin-wrap,
#interactionArea .fillintext-wrap,
#interactionArea .match-wrap,
#interactionArea .classify-wrap,
#interactionArea .typeans-wrap,
#interactionArea .enterval-wrap{ margin-left: auto; margin-right: auto; max-width: 640px; }

/* ── MCQ ─────────────────────────────────────────────────────── */
.mcq-grid{ display:grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 14px; }
.mcq-btn{
  padding: 16px 12px; border-radius: 16px;
  background: var(--card); border: 2px solid var(--card-border);
  color: var(--ink); font-size: 15px; font-weight: 800;
  font-family: 'Nunito', sans-serif;
  box-shadow: 0 3px 0 var(--card-border);
  transition: all .15s var(--ease-pop);
  text-align: center; line-height: 1.3;
}
.mcq-btn:hover:not(:disabled){ transform: translateY(-2px); box-shadow: 0 5px 0 var(--card-border); background: color-mix(in oklab, var(--yellow), transparent 85%); }
.mcq-btn:active:not(:disabled){ transform: translateY(1px); box-shadow: 0 2px 0 var(--card-border); }
.mcq-btn.correct{ background: color-mix(in oklab, var(--green), transparent 75%); border-color: var(--green); color: var(--green); }
.mcq-btn.wrong{   background: color-mix(in oklab, var(--coral), transparent 75%); border-color: var(--coral); color: var(--coral); }
.mcq-btn:disabled{ cursor: not-allowed; }

/* ── True / False ────────────────────────────────────────────── */
.tf-wrap{ display:grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 14px; }
.tf-btn{
  padding: 26px 10px; border-radius: 20px;
  border: 2.5px solid var(--card-border); background: var(--card);
  font-size: 26px; font-weight: 900;
  font-family: 'Nunito', sans-serif;
  box-shadow: 0 5px 0 var(--card-border);
  display:flex; flex-direction:column; align-items:center; gap:4px;
  transition: all .15s var(--ease-pop);
}
.tf-btn.true-btn{  background: color-mix(in oklab, var(--green), transparent 88%); color: var(--green); }
.tf-btn.false-btn{ background: color-mix(in oklab, var(--coral), transparent 88%); color: var(--coral); }
.tf-btn:hover:not(:disabled){ transform: translateY(-2px); box-shadow: 0 7px 0 var(--card-border); }
.tf-btn.result-correct{ background: color-mix(in oklab, var(--green), transparent 70%); color: #fff; }
.tf-btn.result-correct.true-btn{ background: var(--green); color: #fff; }
.tf-btn.result-correct.false-btn{ background: var(--green); color: #fff; }
.tf-btn.result-wrong{ background: color-mix(in oklab, var(--coral), transparent 70%); }
.tf-btn:disabled{ cursor: not-allowed; }
.tf-sub{ font-size: 12px; font-weight: 800; opacity: .75; }

/* ── Tap All ─────────────────────────────────────────────────── */
.tapall-wrap{ margin-bottom: 14px; }
.tapall-hint,
.sort-instruction,
.match-hint,
.classify-hint,
.classify-pool-label{
  text-align: center; font-weight: 800; font-size: 13px;
  color: var(--ink-2); margin-bottom: 12px;
}
.tapall-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 12px; }
@media (min-width: 480px){ .tapall-grid{ grid-template-columns: repeat(4, 1fr); } }
.ta-btn{
  padding: 13px 8px; border-radius: 14px;
  background: var(--card); border: 2px solid var(--card-border);
  color: var(--ink); font-size: 15px; font-weight: 800;
  font-family: 'Nunito', sans-serif;
  box-shadow: 0 3px 0 var(--card-border);
  transition: all .15s var(--ease-pop);
}
.ta-btn:hover:not(:disabled){ transform: translateY(-1px); background: color-mix(in oklab, var(--yellow), transparent 85%); }
.ta-btn.sel{ background: var(--yellow); color: var(--ink); transform: translateY(1px); box-shadow: 0 1px 0 var(--card-border); }
.ta-btn.correct{ background: color-mix(in oklab, var(--green), transparent 75%); border-color: var(--green); color: var(--green); }
.ta-btn.missed{  background: color-mix(in oklab, var(--yellow), transparent 70%); border-color: var(--yellow); color: var(--ink); }
.ta-btn.wrong{   background: color-mix(in oklab, var(--coral), transparent 75%); border-color: var(--coral); color: var(--coral); }
.ta-btn:disabled{ cursor: not-allowed; }

/* Shared "Check" button */
.check-btn{
  display: block; margin: 12px auto 4px; width: 100%; max-width: 320px;
  padding: 13px 22px; border-radius: var(--radius-pill);
  background: var(--yellow); color: var(--ink);
  border: 2px solid var(--card-border);
  box-shadow: 0 4px 0 var(--card-border);
  font-family: 'Nunito', sans-serif; font-weight: 900; font-size: 15px;
  transition: all .15s var(--ease-pop);
}
.check-btn:hover:not(:disabled){ transform: translateY(-2px); box-shadow: 0 6px 0 var(--card-border); }
.check-btn:disabled{ opacity: .55; cursor: not-allowed; }

/* ── Sort ────────────────────────────────────────────────────── */
.sort-wrap{ margin-bottom: 14px; }
.sort-slots{ display:flex; gap: 8px; justify-content:center; flex-wrap:wrap; margin-bottom: 14px; }
.sort-slot{
  width: 66px; height: 66px; border-radius: 16px;
  background: var(--card); border: 2.5px dashed var(--card-border);
  display:flex; align-items:center; justify-content:center;
  font-weight: 900; font-size: 16px; color: var(--ink);
  position: relative;
}
.sort-slot .slot-num{
  position:absolute; top:2px; left:6px;
  font-size: 10px; color: var(--muted); font-weight: 800;
}
.sort-slot.filled{ border-style: solid; background: color-mix(in oklab, var(--yellow), transparent 82%); }
.sort-slot.correct{ border-style: solid; background: color-mix(in oklab, var(--green), transparent 75%); color: var(--green); border-color: var(--green); }
.sort-slot.wrong{   border-style: solid; background: color-mix(in oklab, var(--coral), transparent 75%); color: var(--coral); border-color: var(--coral); }
.sort-tiles{ display:flex; gap: 8px; justify-content:center; flex-wrap:wrap; margin-bottom: 4px; }
.sort-tile{
  padding: 11px 16px; border-radius: 14px;
  background: var(--card); border: 2px solid var(--card-border);
  color: var(--ink); font-weight: 900; font-size: 15px;
  font-family: 'Nunito', sans-serif;
  box-shadow: 0 3px 0 var(--card-border);
  transition: all .15s var(--ease-pop);
}
.sort-tile:hover:not(:disabled){ transform: translateY(-1px); }
.sort-tile.used{ opacity: .35; }
.sort-tile:disabled{ cursor: not-allowed; }

/* ── Fill-in ─────────────────────────────────────────────────── */
.fillin-wrap, .fillintext-wrap{ margin-bottom: 14px; }
.fillin-expr, .flt-sentence{
  text-align:center;
  font-family: var(--display); font-weight: 600;
  font-size: clamp(22px,4vw,32px); color: var(--ink);
  margin-bottom: 18px; line-height: 1.3;
}
.fillin-blank{
  display:inline-block; min-width: 60px;
  padding: 2px 10px; margin: 0 6px;
  background: color-mix(in oklab, var(--yellow), transparent 75%);
  border: 2px dashed var(--card-border);
  border-radius: 10px; color: var(--ink-2);
}
.fillin-opts{ display:flex; gap: 8px; justify-content:center; flex-wrap:wrap; }
.fi-btn{
  padding: 12px 18px; border-radius: 14px;
  background: var(--card); border: 2px solid var(--card-border);
  color: var(--ink); font-weight: 900; font-size: 15px;
  font-family: 'Nunito', sans-serif;
  box-shadow: 0 3px 0 var(--card-border);
  transition: all .15s var(--ease-pop);
}
.fi-btn:hover:not(:disabled){ transform: translateY(-2px); box-shadow: 0 5px 0 var(--card-border); }
.fi-btn.correct{ background: color-mix(in oklab, var(--green), transparent 75%); border-color: var(--green); color: var(--green); }
.fi-btn.wrong{   background: color-mix(in oklab, var(--coral), transparent 75%); border-color: var(--coral); color: var(--coral); }
.fi-btn:disabled{ cursor: not-allowed; }

.flt-input{
  display: inline-block; width: 72px;
  padding: 6px 8px; margin: 0 4px;
  background: var(--card); border: 2px solid var(--card-border);
  border-radius: 10px; font-family: inherit;
  font-size: 18px; font-weight: 900; color: var(--ink);
  text-align: center; box-shadow: 0 2px 0 var(--card-border);
}
.flt-input:focus{ outline: none; border-color: var(--coral); }
.flt-input.correct{ background: color-mix(in oklab, var(--green), transparent 75%); border-color: var(--green); color: var(--green); }
.flt-input.wrong{   background: color-mix(in oklab, var(--coral), transparent 75%); border-color: var(--coral); color: var(--coral); }

/* ── Abacus ──────────────────────────────────────────────────── */
.abacus-frame{
  display:flex; justify-content:center; gap: 18px;
  padding: 18px 10px; margin-bottom: 14px;
  background: color-mix(in oklab, var(--yellow), transparent 85%);
  border: 2px solid var(--card-border); border-radius: 22px;
}
.ab-rod-wrap{ position: relative; display:flex; flex-direction:column; align-items:center; gap: 4px; }
.ab-rod-bar{ position:absolute; top:2px; bottom:24px; width: 3px; background: var(--card-border); border-radius: 10px; }
.ab-bead{ width: 22px; height: 10px; border-radius: 5px; background: var(--card); border: 1.5px solid var(--card-border); }
.ab-bead.H.on{ background: var(--coral); border-color: var(--coral); }
.ab-bead.T.on{ background: var(--yellow); border-color: var(--card-border); }
.ab-bead.O.on{ background: var(--green); border-color: var(--green); }
.ab-bead.off{ opacity: .3; }
.ab-rod-label{
  font-family: var(--display); font-weight: 700;
  font-size: 13px; color: var(--ink); margin-top: 2px;
  background: var(--card); border: 2px solid var(--card-border);
  padding: 2px 8px; border-radius: 10px;
}

/* ── Type answer (numpad) ────────────────────────────────────── */
.typeans-wrap{ margin-bottom: 14px; }
.type-display{
  text-align:center;
  font-family: var(--display); font-weight: 600;
  font-size: 42px; padding: 14px;
  background: var(--card); border: 2.5px dashed var(--card-border);
  border-radius: 18px; color: var(--muted); margin-bottom: 12px;
}
.type-display.has-val{ color: var(--ink); }
.numpad{
  display:grid; grid-template-columns: repeat(4, 1fr); gap: 8px;
  max-width: 320px; margin: 0 auto;
}
.np-btn{
  padding: 14px 0; border-radius: 14px;
  background: var(--card); border: 2px solid var(--card-border);
  color: var(--ink); font-weight: 900; font-size: 18px;
  font-family: 'Nunito', sans-serif;
  box-shadow: 0 3px 0 var(--card-border);
  transition: all .1s var(--ease-pop);
}
.np-btn:hover:not(:disabled){ transform: translateY(-1px); }
.np-btn:active:not(:disabled){ transform: translateY(1px); box-shadow: 0 1px 0 var(--card-border); }
.np-btn.clr{ background: color-mix(in oklab, var(--coral), transparent 80%); color: var(--coral); }
.np-btn.back{ background: color-mix(in oklab, var(--yellow), transparent 75%); }
.np-btn.go{ background: var(--green); color: #fff; border-color: var(--green); }
.np-btn:disabled{ opacity: .45; cursor: not-allowed; }

/* ── Match ───────────────────────────────────────────────────── */
.match-wrap{ margin-bottom: 14px; }
.match-columns{ display:grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 12px; }
.match-col{ display:flex; flex-direction:column; gap: 8px; }
.match-item{
  padding: 11px 12px; border-radius: 14px;
  background: var(--card); border: 2px solid var(--card-border);
  color: var(--ink); font-weight: 800; font-size: 14px;
  box-shadow: 0 2px 0 var(--card-border);
  transition: all .15s var(--ease-pop);
  cursor: pointer; text-align: center;
}
.match-item:hover{ transform: translateY(-1px); }
.match-item.sel{ background: var(--yellow); color: var(--ink); transform: translateY(1px); box-shadow: 0 1px 0 var(--card-border); }

/* ── Classify ────────────────────────────────────────────────── */
.classify-wrap{ margin-bottom: 14px; }
.classify-cats{ display:grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 14px; }
.classify-box{
  padding: 14px 10px; border-radius: 18px;
  background: var(--card); border: 2px dashed var(--card-border);
  min-height: 90px;
  transition: all .15s var(--ease-pop);
}
.classify-box.can-drop{ border-style: solid; background: color-mix(in oklab, var(--yellow), transparent 82%); }
.classify-box-label{
  text-align:center; font-family: var(--display); font-weight: 700;
  font-size: 14px; color: var(--ink); margin-bottom: 8px;
}
.classify-items{ display:flex; gap: 6px; flex-wrap: wrap; justify-content: center; min-height: 40px; }
.classify-pool{ display:flex; gap: 8px; flex-wrap: wrap; justify-content: center; padding: 10px; min-height: 54px; }
.classify-chip{
  padding: 7px 13px; border-radius: var(--radius-pill);
  background: var(--card); border: 2px solid var(--card-border);
  color: var(--ink); font-weight: 800; font-size: 13px;
  box-shadow: 0 2px 0 var(--card-border);
  transition: all .15s var(--ease-pop);
  cursor: pointer;
}
.classify-chip.held{ background: var(--yellow); transform: scale(1.08); }
.classify-chip.correct{ background: color-mix(in oklab, var(--green), transparent 75%); border-color: var(--green); color: var(--green); }
.classify-chip.wrong{   background: color-mix(in oklab, var(--coral), transparent 75%); border-color: var(--coral); color: var(--coral); }

/* ── Enter val (input) ───────────────────────────────────────── */
.enterval-wrap{ margin-bottom: 14px; text-align: center; }
.enterval-input{
  display: block; margin: 0 auto 14px;
  width: 100%; max-width: 280px;
  padding: 14px 18px; border-radius: 16px;
  background: var(--card); border: 2.5px solid var(--card-border);
  font-family: var(--display); font-weight: 600;
  font-size: 22px; color: var(--ink); text-align: center;
  box-shadow: 0 3px 0 var(--card-border);
}
.enterval-input:focus{ outline: none; border-color: var(--coral); }
.enterval-input.correct{ background: color-mix(in oklab, var(--green), transparent 80%); border-color: var(--green); color: var(--green); }
.enterval-input.wrong{   background: color-mix(in oklab, var(--coral), transparent 80%); border-color: var(--coral); color: var(--coral); }
.enterval-submit{
  padding: 12px 26px; border-radius: var(--radius-pill);
  background: var(--yellow); color: var(--ink);
  border: 2px solid var(--card-border);
  box-shadow: 0 3px 0 var(--card-border);
  font-family: 'Nunito', sans-serif; font-weight: 900; font-size: 14px;
  transition: all .15s var(--ease-pop);
}
.enterval-submit:hover:not(:disabled){ transform: translateY(-2px); box-shadow: 0 5px 0 var(--card-border); }
.enterval-submit:disabled{ opacity: .55; cursor: not-allowed; }

/* ── Character panel ─────────────────────────────────────────── */
.char-panel{
  margin-top: 14px;
  display:flex; align-items:center; gap: 12px;
  padding: 12px; border-radius: 18px;
  background: color-mix(in oklab, var(--yellow), transparent 85%);
  border: 1.5px dashed color-mix(in oklab, var(--card-border), transparent 60%);
}
.char-emo{
  width: 50px; height: 50px; flex: 0 0 50px;
  border-radius: 16px;
  display:grid; place-items:center;
  font-size: 30px;
  background: var(--card);
  border: 2px solid var(--card-border);
  box-shadow: 0 3px 0 var(--card-border);
  transform: rotate(-5deg);
}
.char-emo.pop{ animation: pop .4s var(--ease-pop); }
.char-emo.shake{ animation: shake .4s; }
@keyframes pop{ 0%{transform:rotate(-5deg) scale(1)} 50%{transform:rotate(6deg) scale(1.2)} 100%{transform:rotate(-5deg) scale(1)} }
@keyframes shake{ 0%,100%{transform:rotate(-5deg) translateX(0)} 25%{transform:rotate(-8deg) translateX(-3px)} 75%{transform:rotate(0deg) translateX(3px)} }
.char-text .cname{ font-family: var(--display); font-weight: 700; font-size: 14px; color: var(--ink); }
.char-text .cmood{ font-size: 12px; font-weight: 800; margin-top: 2px; }
.char-text .cmood.neutral{ color: var(--muted); }
.char-text .cmood.ok-mood{ color: var(--green); }
.char-text .cmood.no-mood{ color: var(--coral); }
.char-text .cmsg{ font-size: 12px; color: var(--ink-2); margin-top: 2px; font-weight: 600; }

/* ── Feedback & next button ─────────────────────────────────── */
.feedback{
  display: none;
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: 14px;
  font-weight: 900; font-size: 14px;
  text-align: center;
}
.feedback.show{ display: block; animation: ssIn .35s var(--ease-pop); }
.feedback.ok{   background: color-mix(in oklab, var(--green), transparent 80%); color: var(--green); border: 2px solid var(--green); }
.feedback.no{   background: color-mix(in oklab, var(--coral), transparent 80%); color: var(--coral); border: 2px solid var(--coral); }

.next-btn{
  display: none; margin: 14px auto 0;
  padding: 13px 28px; border-radius: var(--radius-pill);
  background: var(--coral); color: #fff;
  border: 2px solid var(--card-border);
  box-shadow: 0 4px 0 var(--card-border);
  font-family: 'Nunito', sans-serif; font-weight: 900; font-size: 15px;
  transition: all .15s var(--ease-pop);
}
.next-btn.show{ display: block; animation: ssIn .35s var(--ease-pop); }
.next-btn:hover{ transform: translateY(-2px); box-shadow: 0 6px 0 var(--card-border); }

/* ── Result screen ───────────────────────────────────────────── */
.result-screen{
  display: none; text-align:center; padding: 24px 10px 10px;
}
.result-screen.show{ display: block; animation: ssIn .5s var(--ease-pop); }
.res-char{
  font-size: 64px; display: inline-block;
  animation: bob 1.2s ease-in-out infinite;
}
@keyframes bob{ 0%,100%{transform:translateY(0)} 50%{transform:translateY(-8px)} }
.res-score{
  font-family: var(--display); font-weight: 700;
  font-size: 48px; line-height: 1; color: var(--coral);
}
.res-stars{ font-size: 28px; letter-spacing: 4px; margin: 8px 0; }
.res-msg{ font-family: var(--display); font-weight: 600; font-size: 18px; color: var(--ink); margin-bottom: 6px; }
.res-time{ font-size: 12px; color: var(--muted); font-weight: 700; margin-bottom: 16px; }
.res-btns{ display:flex; justify-content:center; gap: 10px; flex-wrap: wrap; }
.res-btn{
  padding: 12px 22px; border-radius: var(--radius-pill);
  border: 2px solid var(--card-border);
  box-shadow: 0 4px 0 var(--card-border);
  font-family: 'Nunito', sans-serif; font-weight: 900; font-size: 14px;
  transition: all .15s var(--ease-pop);
}
.res-btn:hover{ transform: translateY(-2px); box-shadow: 0 6px 0 var(--card-border); }
.res-btn.retry{ background: var(--sky); color: #fff; }
.res-btn.next{  background: var(--green); color: #fff; }

/* ── FAB + Modal (hidden, master scoreboard lives on hub) ─── */
.fab{ display: none !important; }
.modal-ov{
  position: fixed; inset: 0; z-index: 200;
  background: rgba(43,27,74,0.55);
  display: none; align-items: center; justify-content: center; padding: 16px;
}
.modal-ov.show{ display:flex; }
.modal-box{
  background: var(--card); border: 2.5px solid var(--card-border);
  border-radius: var(--radius-card); padding: 22px 18px;
  box-shadow: 0 6px 0 var(--card-border);
  width: 100%; max-width: 460px; max-height: 80vh; overflow-y: auto;
  position: relative;
}
.modal-close{
  position: absolute; top: 12px; right: 12px;
  background: var(--card); border: 2px solid var(--card-border);
  border-radius: 50%; width: 32px; height: 32px;
  font-family: 'Nunito', sans-serif;
  font-size: 14px; font-weight: 900; color: var(--ink);
  box-shadow: 0 2px 0 var(--card-border);
}
.modal-title{
  font-family: var(--display); font-weight: 700;
  font-size: 20px; color: var(--ink); margin-bottom: 12px;
}

#confetti-canvas{
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  pointer-events: none; z-index: 999;
}

/* ── Start screen (shown before timer starts) ─────────────── */
.start-screen{
  display:flex; flex-direction:column; align-items:center; text-align:center;
  padding: 30px 18px 18px;
  animation: ssIn .45s var(--ease-pop) both;
}
@keyframes ssIn{ from{opacity:0; transform:scale(.9);} to{opacity:1; transform:scale(1);} }
.start-emo{
  font-size: 72px; margin-bottom: 12px;
  animation: bob 1.4s ease-in-out infinite;
  filter: drop-shadow(0 6px 0 rgba(43,27,74,.15));
}
.start-title{
  font-family: var(--display); font-weight: 700;
  font-size: 30px; color: var(--ink); letter-spacing: -0.02em;
  margin-bottom: 8px;
}
.start-desc{
  font-size: 14px; color: var(--ink-2); font-weight: 700;
  margin-bottom: 22px; line-height: 1.5; max-width: 340px;
}
.start-btn{
  padding: 15px 36px; border-radius: var(--radius-pill);
  background: var(--coral); color: #fff;
  border: 2px solid var(--card-border);
  box-shadow: 0 5px 0 var(--card-border);
  font-family: 'Nunito', sans-serif; font-weight: 900; font-size: 17px;
  transition: all .15s var(--ease-pop);
  animation: sbPulse 1.8s ease-in-out infinite;
}
.start-btn:hover{ transform: translateY(-2px); box-shadow: 0 7px 0 var(--card-border); }
.start-btn:active{ transform: translateY(2px); box-shadow: 0 3px 0 var(--card-border); }
@keyframes sbPulse{
  0%,100%{ box-shadow: 0 5px 0 var(--card-border); }
  50%    { box-shadow: 0 5px 0 var(--card-border), 0 0 0 8px color-mix(in oklab, var(--coral), transparent 75%); }
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 540px){
  .quiz-layout{ flex-direction: column; }
  .sidebar{ width: 100%; flex-direction: row; flex-wrap: wrap; padding: 8px; gap: 5px; justify-content: center; }
  .qb{ width: 30px; height: 30px; font-size: 10px; }
  .qcard{ padding: 18px 14px; }
  .tf-btn{ padding: 20px 8px; font-size: 22px; }
  .mcq-grid{ grid-template-columns: 1fr 1fr; }
  .match-columns{ grid-template-columns: 1fr 1fr; gap: 6px; }
  .classify-cats{ grid-template-columns: 1fr; }
  .flt-input{ width: 60px; font-size: 16px; }
  .type-display{ font-size: 34px; }
}