:root {
  --bg: #f5f7ff;
  --panel: #ffffff;
  --ink: #20233a;
  --muted: #6d728f;
  --primary: #6c63ff;
  --primary-dark: #5048e5;
  --pink: #ff5e9c;
  --gold: #ffbd35;
  --green: #29c889;
  --red: #ff5b65;
  --cyan: #25b6e8;
  --purple-soft: #eceaff;
  --shadow: 0 18px 45px rgba(58, 62, 104, 0.12);
  --radius: 24px;
}

* { box-sizing: border-box; }
html { min-height: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-rounded, "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 10%, rgba(108, 99, 255, 0.12), transparent 24rem),
    radial-gradient(circle at 90% 15%, rgba(255, 94, 156, 0.12), transparent 22rem),
    linear-gradient(180deg, #f9faff 0%, var(--bg) 100%);
}
button, input { font: inherit; }
button { cursor: pointer; }
button:focus-visible, input:focus-visible { outline: 4px solid rgba(37,182,232,.28); outline-offset: 3px; }
.hidden { display: none !important; }
.muted { color: var(--muted); }

.app-shell { width: min(1220px, calc(100% - 28px)); margin: 0 auto; padding-bottom: 48px; }
.topbar { min-height: 84px; display:flex; align-items:center; justify-content:space-between; gap:20px; }
.brand-button { border:0; background:transparent; display:flex; align-items:center; gap:12px; color:var(--ink); padding:8px 0; text-align:left; }
.brand-button strong { display:block; font-size:1.05rem; }
.brand-button small { display:block; color:var(--muted); margin-top:2px; }
.brand-mark { width:44px; height:44px; border-radius:15px; display:grid; place-items:center; background:linear-gradient(135deg,var(--primary),#8c84ff); box-shadow:0 10px 22px rgba(108,99,255,.28); font-size:1.35rem; }
.top-actions { display:flex; gap:8px; }
.icon-button { width:44px; height:44px; border-radius:14px; border:1px solid rgba(79,85,120,.12); background:rgba(255,255,255,.84); box-shadow:0 7px 18px rgba(45,50,85,.07); display:grid; place-items:center; }

.screen { display:none; animation:fadeUp .28s ease; }
.screen.active { display:block; }
@keyframes fadeUp { from { opacity:0; transform:translateY(8px);} to {opacity:1; transform:none;} }

.hero-card {
  min-height:260px; border-radius:32px; padding:48px; color:white; text-align:center;
  background:linear-gradient(135deg,#6c63ff 0%,#8a66ff 45%,#ff69a6 100%);
  box-shadow:var(--shadow); position:relative; overflow:hidden; display:flex; flex-direction:column; align-items:center; justify-content:center;
}
.hero-card::before, .hero-card::after { content:""; position:absolute; width:260px; height:260px; border:44px solid rgba(255,255,255,.08); border-radius:50%; }
.hero-card::before { left:-130px; bottom:-150px; }
.hero-card::after { right:-125px; top:-145px; }
.hero-card h1 { font-size:clamp(2rem,5vw,4rem); line-height:1; margin:8px 0 16px; position:relative; }
.hero-card p { margin:0 0 24px; font-size:1.08rem; opacity:.9; position:relative; }
.hero-sparkles { font-size:1.3rem; letter-spacing:.35em; position:relative; }
.hero-badges { display:flex; flex-wrap:wrap; justify-content:center; gap:10px; position:relative; }
.hero-badges span { border:1px solid rgba(255,255,255,.25); background:rgba(255,255,255,.14); padding:8px 12px; border-radius:999px; font-weight:700; font-size:.88rem; }

.section-heading-row { display:flex; justify-content:space-between; align-items:end; gap:20px; margin:34px 4px 16px; }
h1,h2,h3,p { margin-top:0; }
h2 { margin-bottom:6px; }
.section-heading-row p { margin-bottom:0; }
.row-actions { display:flex; flex-wrap:wrap; gap:10px; }

.primary-button, .secondary-button, .danger-button, .mega-button { border:0; border-radius:15px; font-weight:800; transition:.18s ease; }
.primary-button { background:var(--primary); color:white; padding:12px 18px; box-shadow:0 9px 20px rgba(108,99,255,.24); }
.primary-button:hover { transform:translateY(-1px); background:var(--primary-dark); }
.secondary-button { background:white; color:var(--ink); padding:11px 16px; border:1px solid rgba(79,85,120,.14); }
.secondary-button:hover { transform:translateY(-1px); box-shadow:0 8px 20px rgba(58,62,104,.08); }
.secondary-button.compact { padding:9px 12px; font-size:.86rem; }
.danger-button { background:#fff0f1; color:#bb2531; padding:11px 15px; }
.big { min-width:180px; padding:14px 22px; font-size:1rem; }
.file-button input { display:none; }

.profile-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(220px,1fr)); gap:16px; }
.profile-card { border:0; background:var(--panel); border-radius:24px; padding:26px 20px; text-align:center; box-shadow:0 9px 28px rgba(56,61,97,.08); transition:.18s ease; position:relative; overflow:hidden; }
.profile-card:hover { transform:translateY(-3px) rotate(-.25deg); box-shadow:var(--shadow); }
.profile-card .avatar { margin:0 auto 14px; }
.profile-card strong { display:block; font-size:1.15rem; }
.profile-card span { color:var(--muted); display:block; font-size:.88rem; margin-top:5px; }
.profile-card .mini-badges { display:flex; justify-content:center; gap:8px; margin-top:14px; }
.profile-card .mini-badges em { font-style:normal; background:var(--purple-soft); color:#554dde; padding:5px 8px; border-radius:999px; font-size:.75rem; font-weight:800; }

.avatar { display:grid; place-items:center; line-height:1; user-select:none; filter:drop-shadow(0 7px 9px rgba(50,50,90,.12)); transform-origin:50% 90%; }
.avatar-sm { width:54px; height:54px; font-size:2.55rem; }
.avatar-md { width:70px; height:70px; font-size:3.35rem; }
.avatar-xl { width:112px; height:112px; font-size:5.7rem; }
.avatar-xxl { width:148px; height:148px; font-size:7.6rem; margin:0 auto; }
.avatar.cheer { animation:cheer .58s cubic-bezier(.2,.8,.2,1); }
.avatar.wiggle { animation:wiggle .48s ease; }
.avatar.idle { animation:floaty 2.6s ease-in-out infinite; }
@keyframes cheer { 0%{transform:scale(1) rotate(0)} 25%{transform:scale(1.16) rotate(-9deg)} 55%{transform:scale(1.2) rotate(9deg)} 100%{transform:scale(1) rotate(0)} }
@keyframes wiggle { 20%{transform:rotate(-7deg)} 40%{transform:rotate(7deg)} 60%{transform:rotate(-4deg)} 80%{transform:rotate(4deg)} }
@keyframes floaty { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-7px)} }

.dashboard-hero { background:var(--panel); border-radius:30px; padding:30px; box-shadow:var(--shadow); display:grid; grid-template-columns:auto 1fr auto; align-items:center; gap:22px; }
.dashboard-copy h1 { margin:2px 0 7px; font-size:clamp(2rem,4vw,3rem); }
.dashboard-copy p { margin:0; color:var(--muted); }
.eyebrow { text-transform:uppercase; letter-spacing:.12em; font-size:.72rem; font-weight:900; color:var(--primary); }
.quick-stats { display:grid; grid-template-columns:repeat(3,minmax(86px,1fr)); gap:10px; }
.stat-pill { background:#f8f8ff; border:1px solid rgba(90,84,190,.08); padding:12px; border-radius:18px; text-align:center; min-width:92px; }
.stat-pill span { display:block; }
.stat-pill strong { display:block; font-size:1.35rem; margin:3px 0; }
.stat-pill small { color:var(--muted); font-size:.72rem; }

.dashboard-grid { display:grid; grid-template-columns:minmax(0,1.45fr) minmax(340px,.9fr); gap:20px; margin-top:20px; }
.panel { background:var(--panel); border-radius:28px; padding:26px; box-shadow:0 12px 34px rgba(56,61,97,.08); }
.panel-heading { display:flex; justify-content:space-between; gap:16px; align-items:start; }
.panel-heading h2 { margin:4px 0 18px; }
.operation-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:12px; }
.operation-card { border:2px solid transparent; background:#f9f9ff; border-radius:20px; padding:16px 10px; text-align:center; transition:.16s ease; }
.operation-card:hover { transform:translateY(-2px); }
.operation-card.active { background:var(--purple-soft); border-color:var(--primary); box-shadow:0 10px 20px rgba(108,99,255,.11); }
.operation-symbol { width:48px; height:48px; border-radius:15px; margin:0 auto 8px; color:white; display:grid; place-items:center; font-size:1.75rem; font-weight:900; }
.operation-card strong { display:block; font-size:.9rem; }
.operation-card small { display:block; color:var(--muted); margin-top:3px; }
.op-add .operation-symbol { background:linear-gradient(135deg,#25b6e8,#57d3f8); }
.op-subtract .operation-symbol { background:linear-gradient(135deg,#ff5e9c,#ff87b5); }
.op-multiply .operation-symbol { background:linear-gradient(135deg,#6c63ff,#8c84ff); }
.op-divide .operation-symbol { background:linear-gradient(135deg,#29c889,#57dfaa); }

.level-zone { margin-top:24px; padding-top:22px; border-top:1px solid #eceef8; }
.level-zone-header { display:flex; align-items:center; justify-content:space-between; gap:16px; }
.level-zone h3 { margin:3px 0 0; }
.unlock-message { color:var(--muted); font-size:.8rem; font-weight:700; }
.level-buttons { display:flex; flex-wrap:wrap; gap:8px; margin:16px 0 12px; }
.level-button { width:42px; height:42px; border-radius:13px; border:1px solid #dfe2f1; background:#fff; font-weight:900; color:var(--ink); }
.level-button.active { background:var(--primary); color:white; border-color:var(--primary); }
.level-button.locked { opacity:.36; cursor:not-allowed; }
.level-description { min-height:52px; color:var(--muted); background:#f8f9ff; border-radius:15px; padding:12px 14px; font-size:.9rem; line-height:1.45; }
.mega-button { width:100%; margin-top:18px; padding:17px; background:linear-gradient(135deg,var(--primary),#8d69ff); color:white; box-shadow:0 14px 30px rgba(108,99,255,.24); }
.mega-button span, .mega-button small { display:block; }
.mega-button span { font-size:1.05rem; }
.mega-button small { opacity:.78; margin-top:3px; font-weight:600; }
.mega-button:hover { transform:translateY(-2px) scale(1.005); }

.recent-sessions { margin-top:14px; display:grid; gap:8px; max-height:248px; overflow:auto; padding-right:2px; }
.session-row { display:grid; grid-template-columns:auto 1fr auto; gap:10px; align-items:center; background:#fafaff; border-radius:14px; padding:10px 12px; }
.session-op { width:34px; height:34px; border-radius:11px; display:grid; place-items:center; color:white; font-weight:900; }
.session-copy strong { display:block; font-size:.88rem; }
.session-copy small { color:var(--muted); }
.session-score { font-size:1.1rem; font-weight:900; }
.empty-state { text-align:center; color:var(--muted); padding:28px 10px; }

.game-wrap { width:min(760px,100%); margin:0 auto; }
.game-topline { display:flex; justify-content:space-between; gap:20px; align-items:center; background:rgba(255,255,255,.76); backdrop-filter:blur(12px); padding:12px 16px; border-radius:22px; box-shadow:0 8px 26px rgba(58,62,104,.08); }
.game-player { display:flex; align-items:center; gap:10px; }
.game-player strong, .game-player span { display:block; }
.game-player span { color:var(--muted); font-size:.85rem; margin-top:2px; }
.game-counters { display:flex; gap:20px; }
.game-counters div { text-align:center; }
.game-counters span { display:block; color:var(--muted); font-size:.7rem; text-transform:uppercase; font-weight:900; letter-spacing:.08em; }
.game-counters strong { display:block; font-size:1.35rem; }
.timer-wrap { height:18px; background:#e7e9f7; border-radius:999px; margin:18px 4px 0; position:relative; overflow:hidden; box-shadow:inset 0 2px 4px rgba(70,76,110,.08); }
.timer-bar { position:absolute; inset:0 auto 0 0; width:100%; border-radius:inherit; background:linear-gradient(90deg,var(--green),var(--cyan),var(--primary)); transition:width .25s linear; }
.timer-text { position:absolute; inset:0; display:grid; place-items:center; color:#20233a; font-size:.68rem; font-weight:1000; text-shadow:0 1px 1px rgba(255,255,255,.8); }
.coach-bubble { margin:18px auto -8px; width:max-content; max-width:90%; background:#fff6d7; color:#795b05; padding:9px 14px; border-radius:999px; font-weight:800; font-size:.87rem; box-shadow:0 5px 15px rgba(120,89,4,.08); position:relative; z-index:2; }
.question-card { background:white; border-radius:30px; padding:46px 34px 30px; text-align:center; box-shadow:var(--shadow); }
.question-badge { display:inline-block; color:var(--primary); background:var(--purple-soft); border-radius:999px; padding:7px 11px; font-size:.76rem; font-weight:900; text-transform:uppercase; letter-spacing:.07em; }
.question { font-size:clamp(3.2rem,12vw,6.5rem); font-weight:1000; letter-spacing:-.055em; line-height:1; margin:30px 0 26px; }
.answer-label { display:block; color:var(--muted); font-size:.8rem; font-weight:800; margin-bottom:7px; }
.answer-input { width:min(280px,90%); text-align:center; font-size:2.4rem; font-weight:900; border:3px solid #e2e4f2; border-radius:18px; padding:10px; color:var(--ink); background:#fbfbff; }
.answer-input.correct { border-color:var(--green); background:#effcf7; }
.answer-input.incorrect { border-color:var(--red); background:#fff2f3; }
.feedback-text { min-height:27px; margin-top:9px; font-weight:900; }
.feedback-text.good { color:#159d69; }
.feedback-text.bad { color:#c83743; }
.keypad { width:min(390px,100%); margin:16px auto 0; display:grid; grid-template-columns:repeat(3,1fr); gap:8px; }
.keypad button { border:0; border-radius:14px; background:white; padding:12px; font-size:1.1rem; font-weight:900; box-shadow:0 4px 12px rgba(58,62,104,.07); }
.keypad button:active { transform:translateY(1px) scale(.98); }
.key-submit { background:var(--primary)!important; color:white; }
.key-special { background:#eef0f8!important; }
.text-button { display:block; margin:16px auto; border:0; background:transparent; color:var(--muted); text-decoration:underline; }

.result-card { width:min(720px,100%); margin:24px auto 0; text-align:center; background:white; border-radius:32px; padding:36px; box-shadow:var(--shadow); }
.result-stars { letter-spacing:.25em; margin:6px 0 12px; font-size:1.2rem; }
.result-card h1 { font-size:clamp(2.2rem,6vw,3.6rem); margin-bottom:10px; }
.result-card > p { color:var(--muted); }
.result-stats { display:grid; grid-template-columns:repeat(3,1fr); gap:12px; margin:24px 0; }
.result-stats div { background:#f8f9ff; border-radius:18px; padding:16px 10px; }
.result-stats span { display:block; color:var(--muted); font-size:.75rem; font-weight:800; text-transform:uppercase; }
.result-stats strong { display:block; font-size:1.9rem; margin-top:3px; }
.level-up-banner { margin:10px 0 22px; padding:14px; border-radius:16px; background:linear-gradient(135deg,#fff4c5,#ffe5f0); color:#775c00; font-weight:900; }
.result-actions { display:flex; justify-content:center; flex-wrap:wrap; gap:10px; }

.modal { border:0; border-radius:26px; padding:0; width:min(640px,calc(100% - 24px)); box-shadow:0 26px 90px rgba(35,39,74,.26); }
.modal::backdrop { background:rgba(24,27,48,.48); backdrop-filter:blur(4px); }
.modal form { padding:26px; }
.modal-heading { display:flex; justify-content:space-between; align-items:start; }
.field-label { display:block; font-weight:800; margin:16px 0 7px; }
.text-input { width:100%; border:2px solid #e1e4f0; border-radius:14px; padding:12px 13px; }
.avatar-picker-fieldset { border:0; padding:0; margin:20px 0 8px; }
.avatar-picker-fieldset legend { font-weight:800; margin-bottom:10px; }
.avatar-picker { display:grid; grid-template-columns:repeat(8,1fr); gap:7px; max-height:220px; overflow:auto; }
.avatar-choice { aspect-ratio:1; border:2px solid transparent; border-radius:14px; background:#f7f8ff; font-size:2rem; display:grid; place-items:center; }
.avatar-choice.selected { border-color:var(--primary); background:var(--purple-soft); transform:scale(1.05); }
.modal-actions { display:flex; gap:10px; align-items:center; margin-top:22px; }
.spacer { flex:1; }

#confetti-layer { position:fixed; inset:0; pointer-events:none; z-index:1000; overflow:hidden; }
.confetti-piece { position:absolute; width:9px; height:15px; border-radius:2px; animation:confettiFall var(--dur) linear forwards; transform:rotate(var(--rot)); }
@keyframes confettiFall { from { transform:translate3d(0,-20px,0) rotate(var(--rot)); opacity:1; } to { transform:translate3d(var(--drift),110vh,0) rotate(calc(var(--rot) + 720deg)); opacity:.92; } }

@media (max-width: 930px) {
  .dashboard-grid { grid-template-columns:1fr; }
  .dashboard-hero { grid-template-columns:auto 1fr; }
  .quick-stats { grid-column:1/-1; }
  .operation-grid { grid-template-columns:repeat(2,1fr); }
}
@media (max-width: 620px) {
  .app-shell { width:min(100% - 18px,1220px); }
  .topbar { min-height:70px; }
  .brand-button small { display:none; }
  .hero-card { min-height:230px; padding:34px 18px; }
  .section-heading-row { align-items:stretch; flex-direction:column; }
  .row-actions > * { flex:1; text-align:center; }
  .dashboard-hero { grid-template-columns:1fr; text-align:center; }
  .dashboard-hero .avatar { margin:auto; }
  .quick-stats { grid-template-columns:repeat(3,1fr); }
  .stat-pill { min-width:0; padding:10px 5px; }
  .panel { padding:20px 16px; }
  .question-card { padding:38px 15px 24px; }
  .game-topline { align-items:flex-start; }
  .game-counters { gap:10px; }
  .avatar-picker { grid-template-columns:repeat(6,1fr); }
  .result-stats { gap:7px; }
  .result-card { padding:28px 16px; }
}

/* v2 additions */
.top-main-button { padding:10px 14px; white-space:nowrap; }
.profile-card { padding:0; }
.profile-card-main { width:100%; border:0; background:transparent; padding:26px 20px 14px; color:inherit; text-align:center; }
.profile-card-main .avatar { margin:0 auto 14px; }
.profile-card-main strong { display:block; font-size:1.15rem; }
.profile-card-main span { color:var(--muted); display:block; font-size:.88rem; margin-top:5px; }
.profile-card-main .mini-badges { display:flex; justify-content:center; gap:8px; margin-top:14px; }
.profile-card-main .mini-badges em { font-style:normal; background:var(--purple-soft); color:#554dde; padding:5px 8px; border-radius:999px; font-size:.75rem; font-weight:800; }
.profile-export-button { width:calc(100% - 28px); margin:0 14px 14px; border:1px solid #e4e6f2; border-radius:12px; background:#fafaff; color:var(--muted); padding:9px 10px; font-weight:800; font-size:.8rem; }
.profile-export-button:hover { color:var(--primary); background:var(--purple-soft); }

.operation-grid { grid-template-columns:repeat(auto-fit,minmax(125px,1fr)); }
.op-addsub .operation-symbol { background:linear-gradient(135deg,#ff944d,#ff6c88); }
.op-muldiv .operation-symbol { background:linear-gradient(135deg,#5c7cfa,#7950f2); }
.op-mixedall .operation-symbol { background:linear-gradient(135deg,#e866cf,#8b6df6); }

.play-mode-zone { margin-top:24px; padding-top:22px; border-top:1px solid #eceef8; }
.play-mode-buttons { display:grid; grid-template-columns:repeat(2,1fr); gap:10px; margin-top:10px; }
.play-mode-button { border:2px solid #e5e7f3; border-radius:17px; background:#fafaff; padding:13px 14px; text-align:left; color:var(--ink); transition:.16s ease; }
.play-mode-button:hover { transform:translateY(-1px); }
.play-mode-button.active { border-color:var(--primary); background:var(--purple-soft); box-shadow:0 8px 18px rgba(108,99,255,.1); }
.play-mode-button strong, .play-mode-button small { display:block; }
.play-mode-button strong { font-size:.9rem; }
.play-mode-button small { color:var(--muted); font-size:.75rem; margin-top:3px; line-height:1.3; }

.practice-notice { margin:18px 4px 0; background:linear-gradient(135deg,#eafbf5,#f1edff); color:#3d5c54; border:1px solid rgba(41,200,137,.22); border-radius:16px; padding:11px 14px; text-align:center; font-weight:800; font-size:.86rem; }
.coach-zone { min-height:126px; display:flex; align-items:flex-end; justify-content:center; gap:14px; margin:8px auto -10px; position:relative; z-index:2; }
.avatar-coach { width:104px; height:104px; font-size:5.4rem; flex:0 0 auto; }
.coach-bubble { margin:0 0 21px; max-width:min(430px,70%); border-radius:20px 20px 20px 6px; padding:11px 15px; }
.coach-bubble::before { content:""; position:absolute; left:-9px; bottom:10px; border-width:8px 10px 0 0; border-style:solid; border-color:#fff6d7 transparent transparent transparent; }
.avatar.dance { animation:dance .78s cubic-bezier(.2,.8,.2,1); }
.avatar.bounce { animation:bounce .52s ease; }
.avatar.spin { animation:spinCelebrate .8s ease-in-out; }
.avatar.supercheer { animation:superCheer .9s cubic-bezier(.2,.8,.2,1); }
@keyframes dance { 0%,100%{transform:translateY(0) rotate(0) scale(1)} 20%{transform:translateY(-8px) rotate(-13deg) scale(1.08)} 40%{transform:translateY(1px) rotate(12deg) scale(1.03)} 60%{transform:translateY(-10px) rotate(-9deg) scale(1.1)} 80%{transform:translateY(0) rotate(8deg) scale(1.04)} }
@keyframes bounce { 0%,100%{transform:translateY(0)} 45%{transform:translateY(-15px) scale(1.08)} 70%{transform:translateY(2px) scale(.98)} }
@keyframes spinCelebrate { 0%{transform:rotate(0) scale(1)} 45%{transform:rotate(190deg) scale(1.16)} 100%{transform:rotate(360deg) scale(1)} }
@keyframes superCheer { 0%,100%{transform:translateY(0) scale(1)} 20%{transform:translateY(-16px) scale(1.18) rotate(-10deg)} 45%{transform:translateY(0) scale(1.05) rotate(9deg)} 70%{transform:translateY(-12px) scale(1.2) rotate(-7deg)} }

@media (max-width: 620px) {
  .top-main-button { padding:9px 10px; font-size:.82rem; }
  .play-mode-buttons { grid-template-columns:1fr; }
  .coach-zone { gap:7px; min-height:110px; }
  .avatar-coach { width:82px; height:82px; font-size:4.3rem; }
  .coach-bubble { max-width:70%; margin-bottom:12px; font-size:.8rem; }
}

/* v3 progress dashboard */
.all-players-stats {
  display:grid; grid-template-columns:minmax(250px,1.6fr) repeat(4,minmax(90px,.7fr));
  gap:10px; align-items:stretch; margin:0 0 18px; padding:12px;
  background:rgba(255,255,255,.78); border:1px solid rgba(79,85,120,.10);
  border-radius:22px; box-shadow:0 8px 24px rgba(58,62,104,.06);
}
.all-players-label { display:flex; align-items:center; gap:12px; padding:8px 10px; }
.all-players-label > span { font-size:1.65rem; }
.all-players-label strong, .all-players-label small { display:block; }
.all-players-label small { color:var(--muted); margin-top:2px; }
.all-players-stat { background:#f8f9ff; border-radius:15px; padding:10px; text-align:center; display:grid; align-content:center; }
.all-players-stat strong { font-size:1.08rem; }
.all-players-stat small { color:var(--muted); margin-top:2px; font-size:.7rem; text-transform:uppercase; font-weight:800; letter-spacing:.04em; }

.operation-level { display:inline-block!important; color:var(--primary)!important; background:var(--purple-soft); border-radius:999px; padding:4px 7px; margin:7px 0 2px!important; font-size:.72rem!important; font-weight:900; }

.progress-panel { overflow:hidden; }
.progress-subheading { display:flex; justify-content:space-between; gap:12px; align-items:end; margin:2px 0 10px; }
.progress-subheading h3 { margin:0 0 3px; font-size:1rem; }
.progress-subheading p { margin:0; color:var(--muted); font-size:.76rem; line-height:1.35; }
.stats-subheading, .recent-subheading { margin-top:22px; padding-top:18px; border-top:1px solid #eceef8; }
.mastery-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:9px; }
.mastery-card { background:#fafaff; border:1px solid #eceef8; border-radius:16px; padding:11px; }
.mastery-top { display:flex; gap:9px; align-items:center; }
.mastery-symbol { width:34px; height:34px; flex:0 0 34px; display:grid; place-items:center; color:white; border-radius:11px; font-weight:1000; font-size:1.15rem; }
.mastery-top strong, .mastery-top small { display:block; }
.mastery-top strong { font-size:.82rem; }
.mastery-top small { color:var(--muted); font-size:.7rem; margin-top:1px; }
.mastery-dots { display:grid; grid-template-columns:repeat(8,1fr); gap:3px; margin:10px 0 8px; }
.mastery-dots i { display:block; height:6px; background:#e4e6f1; border-radius:999px; }
.mastery-dots i.filled { background:var(--skill-color); }
.mastery-meta { display:flex; justify-content:space-between; gap:5px; color:var(--muted); font-size:.66rem; font-weight:800; }
.progress-stats { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:8px; }
.progress-stat { background:#f8f9ff; border:1px solid #eef0f8; border-radius:14px; padding:10px 7px; text-align:center; }
.progress-stat > span { display:block; font-size:1rem; }
.progress-stat strong { display:block; font-size:1.05rem; margin:2px 0; }
.progress-stat small { color:var(--muted); display:block; font-size:.64rem; line-height:1.15; }
.recent-sessions { max-height:300px; }
.session-score { text-align:right; line-height:1; min-width:42px; }
.session-score small { display:block; color:var(--muted); font-size:.58rem; text-transform:uppercase; margin-bottom:3px; }

@media (max-width: 930px) {
  .all-players-stats { grid-template-columns:repeat(4,1fr); }
  .all-players-label { grid-column:1/-1; }
}
@media (max-width: 620px) {
  .all-players-stats { grid-template-columns:repeat(2,1fr); }
  .all-players-label { grid-column:1/-1; }
  .mastery-grid { grid-template-columns:1fr; }
  .progress-stats { grid-template-columns:repeat(2,1fr); }
  .mastery-meta { font-size:.7rem; }
}

.suite-footer { margin-top: 28px; padding: 12px 0; text-align: center; color: var(--muted); font-size: .78rem; line-height: 1.7; }
.suite-footer a { color: var(--primary-dark); text-underline-offset: 3px; }

/* Version 1.1: practice pictures and player preferences. */
.background-controls,.practice-visual-controls{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap;margin:14px 0}
.background-controls input{width:58px;height:40px;border:1px solid #c8cbe0;border-radius:8px}
.practice-visual-controls select{font:inherit;padding:7px;border:1px solid #b8bdd7;border-radius:8px;background:white;color:var(--ink)}
.problem-visual{max-width:520px;margin:12px auto;padding:12px;border:1px solid #d5daed;border-radius:16px;background:#f8faff}
.problem-visual[hidden]{display:none}.problem-visual p{font-size:1rem;margin:0 0 10px}.problem-visual svg{display:block;width:100%;height:auto}
.model-groups{display:flex;flex-wrap:wrap;justify-content:center;gap:12px}.model-set{display:flex;flex-wrap:wrap;gap:4px;padding:8px;border:1px solid #b8bdd7;border-radius:8px;max-width:220px;align-content:start}
.model-set.ten-frames{display:grid;grid-template-columns:repeat(5,20px);gap:3px}
.model-cell{width:20px;height:20px;border:1px solid #a5aec4;border-radius:50%;background:white;position:relative}.model-cell.filled{background:#2786b1}.model-cell.filled.alternate{background:#8961ca}.model-cell.crossed:after{content:'×';position:absolute;inset:-4px;color:#fff;font-size:24px;font-weight:bold;line-height:24px}
.op-concepts{--op-color:#0f8b8d}.question{overflow-wrap:anywhere}.top-actions{flex-wrap:wrap}#fullscreenStatus{font-size:.75rem;max-width:190px}
.question.concept-question{font-size:clamp(1.65rem,4.5vw,3rem);line-height:1.2;margin:20px 0}
.custom-background .topbar{background:var(--panel);padding:12px;border-radius:var(--radius)}
.custom-background .suite-footer{background:var(--panel);border-radius:12px}
.model-set.ten-frames{display:flex;max-width:none;flex-wrap:wrap;border:0;padding:0;gap:10px}
.ten-frame{display:grid;grid-template-columns:repeat(5,20px);gap:3px;padding:5px;border:1px solid #8391b0;border-radius:5px;background:white}
.op-concepts .operation-symbol{background:#0f6668;color:#fff}.level-choice-row{display:flex;align-items:center;flex-wrap:wrap;gap:10px}.level-choice-row .level-buttons{flex:1;min-width:240px}#assessmentDescription{line-height:1.6}

/* Touch-friendly play: the built-in keypad replaces the software keyboard. */
.start-countdown{position:fixed;inset:0;z-index:200;display:grid;place-items:center;background:rgba(32,35,58,.72);padding:20px}
.start-countdown[hidden]{display:none}.countdown-card{width:min(420px,100%);padding:40px 24px;background:var(--panel);border-radius:24px;text-align:center;box-shadow:var(--shadow)}
#countdownWord{font-size:clamp(3rem,12vw,5rem);font-weight:950;color:var(--primary-dark);margin-bottom:24px}
.keypad button{min-height:48px;touch-action:manipulation;-webkit-user-select:none;user-select:none}
.answer-input[readonly]{caret-color:transparent;cursor:default}
button{touch-action:manipulation}.app-shell{padding-bottom:max(20px,env(safe-area-inset-bottom))}
.touch-game.in-game .question-card{padding:20px 16px 14px}.touch-game.in-game .question{margin:16px 0;font-size:clamp(2.5rem,7vw,4rem)}
.touch-game.in-game .question.concept-question{font-size:clamp(1.4rem,3.5vw,2rem)}
.touch-game.in-game .problem-visual{max-width:400px;margin:8px auto;padding:8px}
.touch-game.in-game .coach-zone{margin:8px auto;min-height:0}.touch-game.in-game .avatar-coach{width:60px;height:60px;font-size:40px}
.touch-game.in-game .keypad{margin-top:10px;gap:6px}.touch-game.in-game .keypad button{padding:8px}
.touch-game.in-game .answer-input{font-size:2rem;padding:6px}.touch-game.in-game .practice-visual-controls{margin:8px 0}
.touch-game.in-game .practice-visual-controls select{font-size:16px;min-height:44px}.touch-game.in-game .top-actions button{min-height:44px}
@media(max-width:620px){.touch-game.in-game .topbar{gap:8px}.touch-game.in-game .game-topline{gap:8px;padding:9px}.touch-game.in-game .game-counters{gap:10px}}
@media(prefers-reduced-motion:reduce){.in-game .avatar,.in-game .confetti-piece{animation:none!important}}
#assessmentDialog{padding:clamp(20px,4vw,30px);max-height:calc(100dvh - 32px);overflow:auto}
#assessmentDialog h2{margin:0 0 12px;line-height:1.2}
#assessmentDescription{margin:0 0 20px;color:var(--muted)}
#assessmentDialog .modal-actions{justify-content:flex-end;flex-wrap:wrap}
#assessmentTarget{font-size:16px;min-height:44px}
@media(max-width:620px) and (max-height:950px){
  .touch-game.in-game .coach-zone{display:none}
  .touch-game.in-game .topbar{margin-bottom:8px}.touch-game.in-game .top-actions{gap:4px}.touch-game.in-game .top-actions button{font-size:.8rem;padding:6px 8px}
  .touch-game.in-game .question-card{padding:12px}.touch-game.in-game .question{margin:10px 0}
  .touch-game.in-game .problem-visual svg{max-height:165px}.touch-game.in-game .problem-visual{margin:6px auto;padding:4px}
  .touch-game.in-game .practice-notice{margin:8px 0;padding:8px;font-size:.75rem}
  .touch-game.in-game .feedback-text{min-height:20px;margin-top:4px;font-size:.85rem}
  .touch-game.in-game .answer-input{font-size:1.7rem;padding:4px}.touch-game.in-game .keypad{gap:4px;margin-top:8px}
}