:root{
  --bg1:#fff0b3;
  --bg2:#c8f1ff;
  --card:#ffffff;
  --text:#1f2a37;
  --muted:#6b7280;
  --primary:#2b6cff;
  --primary2:#c026d3;
  --accent:#ffb020;
  --accent2:#ff4aa2;
  --good:#16a34a;
  --bad:#dc2626;
  --shadow:0 14px 34px rgba(0,0,0,.12);
  --outline: rgba(17, 24, 39, .16);
  --radius:18px;
  --radius2:26px;
  --shine: 0 0 0 1px rgba(255,255,255,.65) inset;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:var(--font);
  color:var(--text);
  position:relative;
  background:
    radial-gradient(1200px 700px at 16% 0%, rgba(200,241,255,.95), transparent 60%),
    radial-gradient(1200px 700px at 84% 0%, rgba(255,240,179,.92), transparent 60%),
    radial-gradient(900px 540px at 50% 40%, rgba(255,74,162,.10), transparent 55%),
    linear-gradient(180deg, #ffffff, #f3f4f6);
}

.bg-image{
  position:fixed;
  inset:0;
  z-index:-3;
  pointer-events:none;
  background-position:center;
  background-size:cover;
  background-repeat:no-repeat;
  opacity:.42;
  filter: saturate(1.28) contrast(1.08);
}

/* Cartoon background stickers */
body::before{
  content:"";
  position:fixed;
  inset:-12vmax;
  pointer-events:none;
  z-index:-2;
  background:
    radial-gradient(circle at 18% 18%, rgba(43,108,255,.20), transparent 36%),
    radial-gradient(circle at 82% 16%, rgba(255,74,162,.18), transparent 34%),
    radial-gradient(circle at 26% 78%, rgba(255,176,32,.22), transparent 40%),
    radial-gradient(circle at 78% 82%, rgba(34,197,94,.16), transparent 40%);
  filter: saturate(1.10);
  animation: floaty 16s ease-in-out infinite;
}

body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:-1;
  background-image:
    radial-gradient(rgba(17,24,39,.11) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity:.12;
  mix-blend-mode: soft-light;
}

/* Lobby header: more transparent */
body.on-home .app-header{
  background: rgba(255,255,255,.38);
  backdrop-filter: blur(12px);
}

@keyframes floaty{
  0%,100%{transform: translate3d(0,0,0) rotate(0deg)}
  50%{transform: translate3d(1.2vmax,-0.8vmax,0) rotate(.6deg)}
}

.fx-canvas{
  position:fixed;
  inset:0;
  width:100vw;
  height:100vh;
  pointer-events:none;
  z-index:50;
}

.mono{font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;}

.app-header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:12px 14px;
  position:sticky;
  top:0;
  background:rgba(255,255,255,.86);
  backdrop-filter: blur(10px);
  border-bottom:2px solid rgba(0,0,0,.06);
}

.header-left{display:flex; align-items:center; gap:10px;}

.brand{display:flex; align-items:center; gap:12px;}
.logo{
  width:44px;height:44px;border-radius:14px;
  display:grid;place-items:center;
  color:#fff;
  background: linear-gradient(135deg, var(--primary), var(--primary2));
  position:relative;
  box-shadow: 0 10px 18px rgba(37,99,235,.25);
  font-weight:900;
}
.logo::after{
  content:"";
  position:absolute;
  inset:3px;
  border-radius:12px;
  box-shadow: var(--shine);
}
.brand-title{font-weight:900; letter-spacing:.5px;}
.brand-subtitle{font-size:12px;color:var(--muted)}

/* Nav visibility: keep tool links in lobby only */
.header-right .nav-extra{display:none;}
body.on-home.tools-on .header-right .nav-extra{display:inline-flex;}

.header-right .nav-settings{display:none;}
body.on-home .header-right .nav-settings{display:inline-flex;}

/* In-game: keep header minimal */
body.in-game .nav-settings{display:none;}

/* Home page: fully transparent containers (text only) */
body.on-home .hero .panel,
body.on-home .hero .kid-card,
body.on-home .hero .pick,
body.on-home .hero .notice{
  background: transparent !important;
  border-color: transparent !important;
  box-shadow: none !important;
  backdrop-filter: none !important;
}

body.on-home .hero .h1,
body.on-home .hero .kid-card-title,
body.on-home .hero .pick{
  text-shadow:
    0 2px 0 rgba(255,255,255,.60),
    0 10px 22px rgba(0,0,0,.10),
    0 0 18px rgba(255,74,162,.22),
    0 0 18px rgba(43,108,255,.18),
    0 0 14px rgba(255,176,32,.16);
}

/* Home page: paragraph/tip text should stay crisp (avoid heavy glow shadows) */
body.on-home .hero .kid-card-sub,
body.on-home .hero .p,
body.on-home .hero .notice{
  color: rgba(31,42,55,.78);
  text-shadow:
    0 1px 0 rgba(255,255,255,.78),
    0 4px 12px rgba(0,0,0,.12);
}

/* In-game: outer panel transparent (keep buttons and inner blocks) */
body.in-game .panel{
  background: transparent !important;
  border-color: transparent !important;
  box-shadow: none !important;
  backdrop-filter: none !important;
}

/* Back to lobby: only show inside games */
.nav-back{display:none; font-weight:900;}
body.in-game .nav-back{display:inline-flex;}

/* In-game: keep header short, only show Home + stars */
body.in-game .brand-subtitle{display:none;}
body.in-game .app-header{padding:10px 12px; gap:10px;}
body.in-game .logo{width:38px; height:38px; border-radius:14px;}
body.in-game .brand-title{font-size:14px;}
body.in-game .link-home{font-weight:900;}
body.in-game .brand{display:none;}
body.in-game .link-home{display:none;}

@media (max-width: 520px){
  .brand-subtitle{display:none;}
  .logo{width:40px; height:40px;}
  .brand-title{font-size:16px;}
  .app-main{padding:14px;}
}

.quiz-prompt{
  font-size:20px;
  font-weight:900;
  color:var(--text);
  margin:8px 0 12px 0;
  line-height:1.55;
}

@media (max-width: 520px){
  .quiz-prompt{font-size:18px;}
}

.header-right{display:flex; align-items:center; gap:10px; flex-wrap:wrap;}
.stat{
  padding:8px 10px;
  border-radius:999px;
  background:#fff;
  border:2px solid rgba(0,0,0,.07);
  box-shadow: 0 8px 20px rgba(0,0,0,.08);
  font-weight:700;
}

.link{
  text-decoration:none;
  color:var(--text);
  padding:8px 10px;
  border-radius:999px;
  background:rgba(255,255,255,.85);
  border:2px solid rgba(0,0,0,.07);
  box-shadow: 0 8px 18px rgba(0,0,0,.06);
}
.link:hover{border-color:rgba(37,99,235,.35)}

.app-main{padding:18px; max-width:1100px; margin:0 auto;}

.app-footer{
  display:flex;
  justify-content:space-between;
  gap:12px;
  padding:12px 18px;
  color:var(--muted);
  font-size:12px;
}

.grid{
  display:grid;
  gap:14px;
}

.hero{
  display:grid;
  grid-template-columns: 1.3fr 1fr;
  gap:16px;
  align-items:stretch;
}

@media (max-width: 900px){
  .hero{grid-template-columns:1fr;}
}

.panel{
  background:rgba(255,255,255,.42);
  border:2px solid rgba(0,0,0,.07);
  border-radius: var(--radius2);
  box-shadow: var(--shadow);
  padding:18px;
  backdrop-filter: blur(10px);
}

.h1{font-size:28px; font-weight:900; margin:0 0 8px 0;}
.p{margin:0; color:var(--muted); line-height:1.6;}

.actions{display:flex; flex-wrap:wrap; gap:12px; margin-top:14px;}

.btn{
  border:2px solid rgba(0,0,0,.12);
  border-radius: 999px;
  padding:12px 16px;
  font-weight:800;
  cursor:pointer;
  background: linear-gradient(135deg, var(--primary), var(--primary2));
  color:#fff;
  box-shadow: 0 14px 24px rgba(37,99,235,.22), 0 10px 0 rgba(17,24,39,.06);
  transform: translateY(0);
  transition: transform .12s ease, filter .12s ease;
  touch-action: manipulation;
  position:relative;
  overflow:hidden;
}
.btn::after{
  content:"";
  position:absolute;
  inset:-20% -40%;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,.55), transparent 50%);
  transform: rotate(12deg);
  opacity:.65;
}
.btn:hover{filter:brightness(1.03)}
.btn:active{transform: translateY(2px) scale(.99)}

.btn.secondary{
  background:#fff;
  color:var(--text);
  border:2px solid rgba(0,0,0,.10);
  box-shadow: 0 10px 18px rgba(0,0,0,.08), 0 10px 0 rgba(17,24,39,.05);
}

.btn.danger{
  background: linear-gradient(135deg, #ef4444, #b91c1c);
}

.kid-card{
  background:rgba(255,255,255,.90);
  border:2px solid rgba(0,0,0,.07);
  border-radius: var(--radius2);
  padding:14px;
  box-shadow: 0 12px 22px rgba(0,0,0,.08);
  backdrop-filter: blur(10px);
}

.sparkle{
  background: linear-gradient(135deg, rgba(245,158,11,.18), rgba(236,72,153,.14));
  border: 1px solid rgba(245,158,11,.22);
}

.kid-card-title{font-weight:900; margin:0 0 6px 0;}
.kid-card-sub{color:var(--muted); font-size:13px; margin:0 0 12px 0;}

.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 10px;
  border-radius:999px;
  background:rgba(37,99,235,.08);
  color:#1d4ed8;
  border:1px solid rgba(37,99,235,.18);
  font-weight:800;
  font-size:12px;
}

.badge.rainbow{
  background: linear-gradient(135deg, rgba(245,158,11,.16), rgba(236,72,153,.16), rgba(37,99,235,.14));
  border-color: rgba(236,72,153,.25);
  color:#7c2d12;
}

.toolbar{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
  margin-bottom:12px;
}

.toolbar-left, .toolbar-right{display:flex; align-items:center; gap:10px; flex-wrap:wrap;}

.toggle{
  display:flex; align-items:center; gap:8px;
  padding:8px 10px;
  border-radius:999px;
  background:#fff;
  border:1px solid rgba(0,0,0,.08);
}

input[type="checkbox"]{width:18px; height:18px;}

.notice{
  padding:12px 14px;
  border-radius:16px;
  border:2px dashed rgba(0,0,0,.18);
  color:var(--muted);
  background: rgba(255,255,255,.55);
}

.game-grid{
  display:grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap:12px;
}

@media (max-width: 700px){
  .game-grid{grid-template-columns: repeat(3, minmax(0, 1fr));}
}

@media (max-width: 480px){
  .game-grid{grid-template-columns: repeat(2, minmax(0, 1fr));}
}

.card{
  user-select:none;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255,255,255,.92), rgba(248,250,252,.86));
  border:2px solid rgba(0,0,0,.09);
  box-shadow: 0 12px 18px rgba(0,0,0,.08), 0 10px 0 rgba(17,24,39,.05);
  padding:14px 10px;
  min-height:84px;
  display:grid;
  place-items:center;
  text-align:center;
  font-weight:900;
  cursor:pointer;
  position:relative;
  overflow:hidden;
  transition: transform .14s ease, box-shadow .14s ease, background .14s ease;
  touch-action: manipulation;
}

.card:hover{transform: translateY(-1px)}
.card:active{transform: translateY(1px) scale(.99)}

.card[data-state="down"]{
  background: linear-gradient(135deg, rgba(37,99,235,.45), rgba(236,72,153,.38));
}

.card[data-state="up"]{
  background: rgba(255,255,255,.96);
}

.card[data-state="matched"]{
  background: linear-gradient(135deg, rgba(22,163,74,.12), rgba(34,197,94,.12));
  border-color: rgba(22,163,74,.25);
  cursor:default;
}

.card[data-state="matched"]::after{
  content:"";
  position:absolute;
  inset:-30%;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,.45), transparent 60%);
  transform: rotate(18deg);
}

.card small{display:block; font-weight:800; color:var(--muted); margin-top:6px;}

.row{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:12px;
}
@media (max-width: 900px){
  .row{grid-template-columns:1fr;}
}

.list{
  display:grid;
  gap:10px;
}

.pick{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:12px 14px;
  border-radius:16px;
  background:rgba(255,255,255,.88);
  border:2px solid rgba(0,0,0,.09);
  box-shadow: 0 10px 18px rgba(0,0,0,.07), 0 10px 0 rgba(17,24,39,.045);
  backdrop-filter: blur(8px);
  cursor:pointer;
  user-select:none;
  touch-action: manipulation;
  transition: transform .12s ease, background .12s ease, border-color .12s ease;
}

.pick:active{transform: translateY(1px) scale(.99)}

.pick[data-state="ok"]{border-color: rgba(22,163,74,.35); background: rgba(22,163,74,.08)}
.pick[data-state="bad"]{border-color: rgba(220,38,38,.30); background: rgba(220,38,38,.06)}
.pick strong{font-weight:900}

.modal{border:none; padding:0; background:transparent;}
.modal::backdrop{background:rgba(15,23,42,.55)}
.modal-card{
  width:min(560px, calc(100vw - 24px));
  border-radius:24px;
  background:rgba(255,255,255,.86);
  border:1px solid rgba(0,0,0,.08);
  box-shadow: var(--shadow);
  padding:16px;
  backdrop-filter: blur(10px);
}
.modal-title{font-weight:900; font-size:18px;}
.modal-body{margin-top:10px; color:var(--muted); line-height:1.6;}
.modal-actions{display:flex; justify-content:flex-end; margin-top:12px;}

.reward-pill{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:10px 14px;
  border-radius: 999px;
  color:#111827;
  font-weight:900;
  background: linear-gradient(135deg, rgba(245,158,11,.22), rgba(236,72,153,.18), rgba(37,99,235,.14));
  border: 1px solid rgba(245,158,11,.25);
  box-shadow: 0 14px 22px rgba(245,158,11,.10);
}

.pop{
  animation: pop .38s ease both;
}

@keyframes pop{
  from{transform: translateY(6px) scale(.96); opacity:.0}
  to{transform: translateY(0) scale(1); opacity:1}
}