:root{
  color-scheme:light;
  --ink:#262338;--muted:#77738a;--border:#e7e3f1;--panel:rgba(255,255,255,.88);
  --primary:#5b4cf0;--primary-dark:#4338ca;--soft:#f4f2ff;--danger:#dc2626;
  font-family:Inter,ui-rounded,"Segoe UI",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box}
html{min-width:320px;background:#f7f7ff;scroll-behavior:smooth}
body{margin:0;min-width:320px;min-height:100vh;color:var(--ink);background:linear-gradient(160deg,#faf8ff 0%,#f0f8ff 48%,#fff8f1 100%);touch-action:manipulation}
button,input,select{font:inherit}
button{touch-action:manipulation;-webkit-tap-highlight-color:transparent}
button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid rgba(91,76,240,.35);outline-offset:2px}
button{color:inherit}
.app-shell{min-height:100vh;position:relative;overflow-x:hidden}
.ambient{position:fixed;border-radius:50%;filter:blur(1px);pointer-events:none;opacity:.34}
.ambient-one{width:320px;height:320px;top:-120px;left:-100px;background:#cabdff}
.ambient-two{width:420px;height:420px;right:-180px;bottom:-160px;background:#b9ebf4}
header{height:76px;display:flex;align-items:center;justify-content:space-between;padding:0 clamp(16px,3vw,42px);position:relative;z-index:20}
.brand{display:flex;align-items:center;gap:11px;border:0;background:transparent;padding:0;cursor:pointer;text-align:left}
.brand-mark{width:43px;height:43px;border-radius:14px;display:grid;place-items:center;color:white;font-weight:950;background:linear-gradient(145deg,#7b5df0,#4d4bdc 60%,#2e87d5);box-shadow:0 8px 18px rgba(81,66,211,.24)}
.brand strong,.brand small{display:block}.brand strong{font-size:17px}.brand small{font-size:9px;letter-spacing:1.5px;color:#747087;margin-top:1px}
.header-actions{display:flex;gap:8px}.icon-button{width:42px;height:42px;border:1px solid rgba(91,76,240,.12);border-radius:13px;background:rgba(255,255,255,.72);display:grid;place-items:center;cursor:pointer;font-weight:900}
.main-content{width:min(1240px,calc(100% - 28px));min-height:calc(100vh - 122px);margin:0 auto;padding:8px 0 28px;position:relative;z-index:2}
.panel{background:var(--panel);border:1px solid rgba(255,255,255,.92);border-radius:28px;box-shadow:0 18px 55px rgba(60,48,120,.10);backdrop-filter:blur(12px)}
.primary,.secondary,.text-button{border:0;border-radius:14px;padding:12px 18px;font-weight:850;cursor:pointer;transition:transform .12s ease,filter .12s ease,background .12s ease}
.primary{color:white;background:linear-gradient(135deg,#6757ed,#4c46d8);box-shadow:0 8px 18px rgba(76,70,216,.24)}
.secondary{background:#f0eefb;color:#4c46b3;border:1px solid #ded9f7}.text-button{background:transparent;color:#615ca2}.primary:hover,.secondary:hover{filter:brightness(1.03)}.primary:active,.secondary:active{transform:scale(.98)}
.primary.huge{padding:15px 22px;font-size:16px}.primary.full{width:100%}
.eyebrow{font-size:10px;font-weight:900;letter-spacing:2px;color:#6d5ee8}
.hero{min-height:690px;padding:clamp(34px,6vw,80px);display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:45px;position:relative;overflow:hidden}
.hero-copy{position:relative;z-index:2}.hero h1{font-size:clamp(47px,6.2vw,88px);line-height:.96;letter-spacing:-4px;margin:14px 0 22px}.hero h1 span{color:#5b4cf0}.hero p{max-width:590px;color:var(--muted);font-size:17px;line-height:1.65;margin:0 0 30px}
.age-preview{display:grid;grid-template-columns:1fr 1fr;gap:14px}.preview-card{min-height:188px;border:0;border-radius:26px;padding:24px;text-align:left;position:relative;overflow:hidden;cursor:pointer;box-shadow:0 14px 30px rgba(53,45,112,.12);transition:transform .16s ease}.preview-card:hover{transform:translateY(-4px)}.preview-card strong,.preview-card small{display:block;position:relative;z-index:2}.preview-card strong{font-size:18px;margin-top:82px}.preview-card small{font-size:11px;margin-top:3px;opacity:.75}.preview-icon{position:absolute;right:18px;top:14px;font-size:55px;filter:drop-shadow(0 8px 10px rgba(0,0,0,.1))}.preview-1{background:linear-gradient(145deg,#fff4c7,#ffe9a5)}.preview-2{background:linear-gradient(145deg,#dff8f2,#bdece0);transform:translateY(20px)}.preview-3{background:linear-gradient(145deg,#e8e4ff,#d4ccff)}.preview-4{background:linear-gradient(145deg,#ddeeff,#c5dcff);transform:translateY(20px)}
.feature-strip{position:absolute;left:0;right:0;bottom:0;min-height:67px;display:flex;align-items:center;justify-content:center;gap:clamp(20px,4vw,60px);background:rgba(247,247,255,.86);border-top:1px solid rgba(91,76,240,.09);color:#66627a;font-size:12px;font-weight:750}
.setup{padding:clamp(20px,3vw,40px)}.section-heading{display:flex;align-items:center;gap:14px;margin-bottom:26px}.section-heading h2{font-size:32px;margin:3px 0 0}.setup-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.setup-section{padding:20px;border-radius:20px;background:rgba(248,247,253,.8);border:1px solid #ebe8f4}.setup-section.wide{grid-column:span 2}.setup-section h3{display:flex;align-items:center;gap:8px;font-size:14px;margin:0 0 14px}.setup-section h3>span{width:24px;height:24px;border-radius:8px;display:grid;place-items:center;background:#e8e4ff;color:#5648cf;font-size:11px}
.age-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.choice-card,.difficulty-card,.category-card,.clock-choices button,.segmented button{border:2px solid transparent;background:white;border-radius:15px;padding:15px;text-align:left;cursor:pointer;transition:border-color .12s ease,background .12s ease,transform .12s ease}.choice-card:hover,.difficulty-card:hover,.category-card:hover{transform:translateY(-2px)}.choice-card strong,.choice-card span,.choice-card small,.difficulty-card strong,.difficulty-card span,.difficulty-card small,.category-card strong,.category-card small{display:block}.choice-card span,.difficulty-card span{font-size:12px;color:#5e5970;margin-top:5px}.choice-card small,.difficulty-card small,.category-card small{font-size:10px;color:var(--muted);margin-top:4px;line-height:1.35}.choice-card.selected,.difficulty-card.selected,.category-card.selected,.clock-choices button.selected{border-color:#6657e7;background:#f4f2ff}
.category-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:10px}.category-card{text-align:center;min-height:110px}.category-card b{display:block;font-size:29px;margin-bottom:7px}.category-card strong{font-size:13px}
.difficulty-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}.difficulty-card{min-height:98px}.difficulty-card strong{font-size:13px}.difficulty-card span{font-weight:900;color:#4e47bd}.info-note{font-size:11px;color:var(--muted);margin:12px 2px 0;line-height:1.45}
.segmented{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.segmented button{padding:12px}.segmented button strong,.segmented button small{display:block}.segmented button small{color:var(--muted);font-size:10px;margin-top:2px}.segmented button.active{background:#5b4cf0;color:white}.segmented button.active small{color:#e7e4ff}
.field{display:block;margin-top:13px}.field>span{display:block;font-size:11px;font-weight:800;margin-bottom:6px;color:#615d71}.field input,.field select{width:100%;border:1px solid #ddd8eb;background:white;border-radius:12px;padding:11px 12px;color:var(--ink)}
.clock-choices{display:grid;grid-template-columns:1fr 1fr;gap:8px}.clock-choices button strong,.clock-choices button small{display:block}.clock-choices button small{font-size:10px;color:var(--muted);margin-top:4px}.best-score{margin-top:12px;padding:10px;border-radius:12px;background:#fff8d8;font-size:11px;font-weight:800;color:#795f1d}
.join-panel{margin-top:16px;padding:15px;border-radius:18px;background:#eff9ff;display:grid;grid-template-columns:1fr 150px auto;align-items:center;gap:12px}.join-panel strong,.join-panel span{display:block}.join-panel span{font-size:11px;color:var(--muted);margin-top:3px}.join-panel input{border:1px solid #bfdbe8;border-radius:12px;padding:12px;text-transform:uppercase;letter-spacing:3px;text-align:center;font-weight:900}.error-message{color:#b42318;background:#fff1f0;border:1px solid #ffd0cc;border-radius:12px;padding:11px 13px;font-size:12px}.setup-footer{margin-top:20px;display:flex;align-items:center;justify-content:space-between;gap:16px}.setup-footer>div strong,.setup-footer>div span{display:block}.setup-footer>div span{font-size:11px;color:var(--muted);margin-top:3px}
.waiting{width:min(560px,100%);margin:6vh auto 0;padding:45px;text-align:center}.loader-orbit{width:82px;height:82px;margin:0 auto 25px;display:grid;place-items:center;border-radius:50%;background:#efedff;position:relative}.loader-orbit:after{content:"";position:absolute;inset:-9px;border:3px solid transparent;border-top-color:#5b4cf0;border-right-color:#06b6d4;border-radius:50%;animation:spin 1.1s linear infinite}.loader-orbit span{font-size:42px}.waiting h2{font-size:34px;margin:8px 0 10px}.waiting p{color:var(--muted)}.room-code{margin:26px auto 15px;padding:16px 24px;width:min(280px,100%);background:white;border:2px dashed #7c6fec;border-radius:17px}.room-code small,.room-code strong{display:block}.room-code small{font-size:9px;letter-spacing:2px;color:var(--muted)}.room-code strong{font-size:34px;letter-spacing:7px;color:#4f46e5}.player-slots{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:24px 0}.player-slots span{border-radius:13px;padding:12px;background:#f2f2f8;color:#858398;font-size:12px}.player-slots .filled{background:#e9fbf4;color:#087558;font-weight:850}
.game-layout{width:100%;display:flex;flex-direction:column;align-items:center;gap:10px}.game-topbar{width:min(900px,100%);min-height:66px;display:flex;align-items:center;justify-content:center;gap:clamp(10px,4vw,38px);padding:9px 14px;position:sticky;top:6px;z-index:15}.game-stat{text-align:center;min-width:68px}.game-stat small,.game-stat strong{display:block}.game-stat small{color:var(--muted);font-size:9px;font-weight:850;letter-spacing:1px}.game-stat strong{font-size:21px;font-weight:900;margin-top:1px}.danger{color:var(--danger);animation:pulse .6s infinite alternate}
.scoreboard{width:min(760px,100%);display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:8px}.player-score{border-radius:14px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:10px;padding:7px 12px;border:2px solid transparent}.player-score>span{width:32px;height:32px;display:grid;place-items:center;background:#eeecff;border-radius:10px;color:#5b4cf0}.player-score small,.player-score strong{display:block}.player-score small{font-size:8px;color:var(--muted);letter-spacing:1px}.player-score strong{font-size:13px;max-width:145px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.player-score b{font-size:23px}.player-score.turn{border-color:#6d5ee8;background:#f4f2ff}.player-score.mine small{color:#0f766e}
.game-message{min-height:24px;padding:4px 14px;border-radius:20px;background:rgba(255,255,255,.72);color:#5f5b74;font-size:12px;font-weight:750}.board-wrap{width:100%;position:relative;display:flex;justify-content:center;align-items:flex-start}.card-grid{width:min(1120px,100%);display:grid;grid-template-columns:repeat(var(--desktop-cols),minmax(0,1fr));gap:clamp(5px,.75vw,10px);padding:clamp(7px,1vw,13px);border-radius:22px;background:rgba(255,255,255,.58);border:1px solid rgba(255,255,255,.85);box-shadow:0 16px 45px rgba(60,48,120,.10)}
.memory-card{border:0;background:transparent;padding:0;min-width:0;aspect-ratio:4/5;perspective:700px;cursor:pointer;border-radius:12px;contain:layout paint style}.memory-card:disabled{cursor:default}.card-inner{width:100%;height:100%;display:block;position:relative;transform-style:preserve-3d;transition:transform .14s cubic-bezier(.2,.75,.25,1)}.memory-card.open .card-inner{transform:rotateY(180deg)}.card-back,.card-face{position:absolute;inset:0;border-radius:12px;backface-visibility:hidden;display:grid;place-items:center;overflow:hidden}.card-back{color:white;background:radial-gradient(circle at 30% 25%,rgba(255,255,255,.28),transparent 28%),linear-gradient(145deg,#7557ef,#5045db 58%,#2776d9);box-shadow:inset 0 0 0 1px rgba(255,255,255,.25),0 3px 8px rgba(62,52,150,.19)}.card-back>span{font-size:clamp(14px,2vw,26px);font-weight:950}.card-back:after{content:"";position:absolute;inset:14%;border:1px solid rgba(255,255,255,.28);border-radius:18px}.card-face{transform:rotateY(180deg);background:linear-gradient(145deg,#fff,color-mix(in srgb,var(--accent) 8%,white));border:2px solid color-mix(in srgb,var(--accent) 48%,white);box-shadow:inset 0 -5px 14px rgba(40,35,80,.05)}.memory-card.matched .card-face{background:color-mix(in srgb,var(--accent) 13%,white);box-shadow:0 0 0 2px color-mix(in srgb,var(--accent) 28%,white),0 6px 14px color-mix(in srgb,var(--accent) 18%,transparent)}.memory-card:not(:disabled):active .card-inner{transform:scale(.97)}.memory-card.open:not(:disabled):active .card-inner{transform:rotateY(180deg) scale(.97)}
.card-art{width:100%;height:100%;display:flex;align-items:center;justify-content:center;flex-direction:column;padding:5px}.kid-art svg{width:min(78%,90px);height:auto;max-height:72%;filter:drop-shadow(0 4px 4px rgba(36,33,58,.10))}.card-art small{font-size:clamp(7px,.85vw,11px);font-weight:900;letter-spacing:.2px;line-height:1.05;margin-top:2px;text-align:center;color:#494459}.teen-glyph{font-size:clamp(24px,4.3vw,55px);line-height:1}.teen-art small{margin-top:5px}.pattern-art svg{width:82%;height:82%}
.pause-cover{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;background:rgba(244,242,255,.87);backdrop-filter:blur(13px);border-radius:22px;z-index:3}.pause-cover span{font-size:42px;font-weight:900;letter-spacing:6px;color:#4f46e5}
.modal-backdrop{position:fixed;inset:0;z-index:50;display:grid;place-items:center;padding:18px;background:rgba(27,24,58,.52);backdrop-filter:blur(8px)}.result-modal,.settings-modal{width:min(490px,100%);padding:35px;text-align:center;position:relative;overflow:hidden;animation:modalIn .22s ease-out}.settings-modal{text-align:left}.result-icon{width:78px;height:78px;display:grid;place-items:center;margin:0 auto 16px;border-radius:24px;background:linear-gradient(145deg,#fff5c5,#ffe796);font-size:39px;transform:rotate(-4deg)}.result-modal h2{font-size:36px;margin:5px 0 8px}.stars{font-size:36px;letter-spacing:5px;margin-bottom:20px}.stars span{color:#dcdbe8}.stars .earned{color:#f9b827;filter:drop-shadow(0 4px 5px rgba(226,153,19,.2))}.result-stats{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:18px 0 24px}.result-stats span{padding:14px;border-radius:15px;background:#f5f4fc}.result-stats small,.result-stats strong{display:block}.result-stats small{color:var(--muted);font-size:9px;letter-spacing:1px}.result-stats strong{font-size:24px;font-weight:900;margin-top:3px}.result-scores{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:13px;margin:22px 0}.result-scores span{padding:13px;border-radius:14px;background:#f5f4fc;font-size:12px;overflow:hidden}.result-scores b{display:block;font-size:28px;color:#4f46e5}.result-scores em{color:#aaa8b8}.modal-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}.confetti{position:absolute;top:11px;left:0;right:0;color:#8b5cf6;letter-spacing:19px;animation:float 1.3s ease-in-out infinite alternate}.toggle-row{display:flex;align-items:center;justify-content:space-between;gap:25px;padding:17px 0;border-bottom:1px solid var(--border)}.toggle-row span strong,.toggle-row span small{display:block}.toggle-row span small{color:var(--muted);margin-top:4px;line-height:1.4}.toggle-row input{width:44px;height:24px;accent-color:#5b4cf0}.settings-modal .full{margin-top:24px}
footer{height:46px;display:grid;place-items:center;position:relative;z-index:2;color:#8a879a;font-size:10px;letter-spacing:.7px;text-transform:uppercase}
@keyframes spin{to{transform:rotate(360deg)}}@keyframes pulse{from{opacity:.7;transform:scale(.98)}to{opacity:1;transform:scale(1.04)}}@keyframes modalIn{from{opacity:0;transform:translateY(12px) scale(.98)}}@keyframes float{from{transform:translateY(0)}to{transform:translateY(5px)}}
html[data-motion=reduced] *,html[data-motion=reduced] *:before,html[data-motion=reduced] *:after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}

@media(max-width:1000px){.hero{grid-template-columns:1fr;padding-bottom:88px}.hero-copy{text-align:center}.hero p{margin-left:auto;margin-right:auto}.age-preview{max-width:650px;margin:0 auto;width:100%}.preview-2,.preview-4{transform:none}.setup-grid{grid-template-columns:1fr}.setup-section.wide{grid-column:span 1}.age-grid{grid-template-columns:repeat(2,1fr)}.category-grid{grid-template-columns:repeat(3,1fr)}.difficulty-grid{grid-template-columns:repeat(3,1fr)}.join-panel{grid-template-columns:1fr 140px auto}}

@media(max-width:680px){
  header{height:64px;padding:0 12px}.brand-mark{width:37px;height:37px}.brand strong{font-size:15px}.brand small{font-size:8px}.main-content{width:calc(100% - 12px);min-height:calc(100vh - 100px);padding:4px 0 18px}.panel{border-radius:20px}.hero{min-height:auto;padding:34px 17px 84px;gap:28px}.hero h1{font-size:42px;letter-spacing:-2px}.hero p{font-size:15px}.age-preview{gap:8px}.preview-card{min-height:124px;border-radius:17px;padding:14px}.preview-icon{font-size:34px;top:10px;right:11px}.preview-card strong{font-size:14px;margin-top:57px}.preview-card small{font-size:9px}.feature-strip{overflow-x:auto;justify-content:flex-start;padding:0 16px;gap:23px;white-space:nowrap}
  .setup{padding:17px 11px}.section-heading{margin-bottom:17px}.section-heading h2{font-size:27px}.setup-section{padding:13px}.age-grid,.difficulty-grid{grid-template-columns:repeat(2,1fr)}.category-grid{grid-template-columns:repeat(3,1fr);gap:7px}.category-card{min-height:92px;padding:10px 6px}.category-card b{font-size:25px}.category-card strong{font-size:11px}.category-card small{font-size:8px}.segmented.vertical-mobile{grid-template-columns:repeat(2,1fr)}.join-panel{grid-template-columns:1fr;text-align:center}.setup-footer{flex-direction:column;align-items:stretch}.setup-footer .primary{width:100%}
  .game-layout{gap:6px}.game-topbar{min-height:55px;gap:6px;padding:6px;top:3px;border-radius:15px}.game-topbar .icon-button{width:33px;height:33px;border-radius:10px}.game-stat{min-width:48px}.game-stat strong{font-size:17px}.scoreboard{border-radius:15px;padding:5px}.player-score{padding:5px 7px;gap:5px}.player-score>span{display:none}.player-score strong{max-width:92px}.game-message{font-size:11px;padding:3px 10px;min-height:21px}
  .card-grid{grid-template-columns:repeat(var(--mobile-cols),minmax(0,1fr));gap:5px;padding:5px;border-radius:14px;width:100%}.memory-card{aspect-ratio:4/5;border-radius:9px;min-height:58px}.card-back,.card-face{border-radius:9px}.card-back:after{border-radius:12px;inset:12%}.kid-art svg{width:84%;max-height:70%}.card-art small{font-size:clamp(6px,2.2vw,9px)}.teen-glyph{font-size:clamp(25px,8.5vw,42px)}
  .result-modal,.settings-modal{padding:26px 18px}.result-modal h2{font-size:31px}.modal-actions{grid-template-columns:1fr}
}

@media(max-width:380px){.category-grid{grid-template-columns:repeat(2,1fr)}.difficulty-grid{grid-template-columns:1fr 1fr}.card-grid{gap:4px;padding:4px}.memory-card{min-height:54px}.game-topbar{gap:3px}.game-stat{min-width:43px}.game-stat small{font-size:8px}.game-stat strong{font-size:15px}}

@media(max-height:620px) and (orientation:landscape){header{height:52px}.brand-mark{width:33px;height:33px}.main-content{padding:1px 0 8px}.game-layout{gap:4px}.game-topbar{min-height:45px;padding:3px 8px;top:1px}.scoreboard{padding:3px}.player-score{padding:2px 8px}.game-message{min-height:17px;padding:1px 9px}.card-grid{grid-template-columns:repeat(var(--desktop-cols),minmax(0,1fr));max-width:96vw;gap:4px;padding:4px}.memory-card{aspect-ratio:5/4}.card-art small{display:none}.kid-art svg{max-height:88%;width:74%}footer{display:none}}

/* v1.7 adaptive full-screen game board */
body.game-active{height:var(--game-viewport-height,100dvh);max-height:var(--game-viewport-height,100dvh);overflow:hidden;overscroll-behavior:none}
body.game-active .app-shell{height:var(--game-viewport-height,100dvh);min-height:0;overflow:hidden}
body.game-active header,body.game-active footer{display:none}
body.game-active .ambient{display:none}
body.game-active .main-content{width:100vw;max-width:none;height:var(--game-viewport-height,100dvh);min-height:0;margin:0;padding:max(3px,env(safe-area-inset-top)) max(3px,env(safe-area-inset-right)) max(3px,env(safe-area-inset-bottom)) max(3px,env(safe-area-inset-left));overflow:hidden}
body.game-active .game-layout{height:100%;min-height:0;width:100%;display:flex;flex-direction:column;align-items:stretch;gap:4px}
body.game-active .game-topbar{position:relative;top:auto;z-index:8;flex:0 0 auto;width:min(100%,1600px);align-self:center;min-height:48px;padding:4px 8px;border-radius:14px;box-shadow:0 5px 18px rgba(60,48,120,.08)}
body.game-active .scoreboard{flex:0 0 auto;width:min(100%,1200px);align-self:center;padding:3px;gap:5px;border-radius:13px;box-shadow:0 4px 14px rgba(60,48,120,.07)}
body.game-active .player-score{min-height:37px;padding:3px 8px;border-radius:10px}
body.game-active .player-score>span{width:27px;height:27px;border-radius:8px}
body.game-active .player-score b{font-size:19px}
body.game-active .game-message{flex:0 0 auto;align-self:center;max-width:min(100%,1200px);min-height:20px;padding:2px 10px;font-size:11px;line-height:16px;text-align:center}
body.game-active .game-message.mismatch-note{background:#fff4d6;color:#74530b}
body.game-active .board-wrap{flex:1 1 auto;min-height:0;width:100%;height:auto;overflow:hidden;align-items:stretch;justify-content:stretch}
body.game-active .card-grid{width:100%;max-width:none;height:100%;min-height:0;display:grid;grid-template-columns:repeat(var(--fit-cols,4),minmax(0,1fr));grid-template-rows:repeat(var(--fit-rows,4),minmax(0,1fr));gap:clamp(3px,.42vw,7px);padding:clamp(3px,.42vw,7px);border-radius:14px}
body.game-active .memory-card{width:100%;height:100%;min-width:0;min-height:0;aspect-ratio:auto;border-radius:clamp(6px,.7vw,11px)}
body.game-active .card-inner,body.game-active .card-back,body.game-active .card-face{width:100%;height:100%;min-height:0}
body.game-active .card-back,body.game-active .card-face{border-radius:clamp(6px,.7vw,11px)}
body.game-active .card-inner{transition:transform .09s cubic-bezier(.2,.75,.25,1)}
body.game-active .card-art{min-height:0;padding:2px}
body.game-active .kid-art svg{width:min(82%,110px);height:min(73%,110px);max-height:none;object-fit:contain}
body.game-active .pattern-art svg{width:86%;height:86%}
body.game-active .teen-glyph{font-size:clamp(18px,min(5.2vw,8vh),62px)}
body.game-active .dense-board .card-art small,body.game-active .wide-cards .card-art small{display:none}
body.game-active .dense-board .kid-art svg{width:88%;height:88%}
body.game-active .dense-board .card-back:after{inset:10%;border-radius:8px}
body.game-active .memory-card.mismatch-open .card-face{box-shadow:inset 0 0 0 2px #f59e0b,0 0 0 1px rgba(245,158,11,.4)}
.start-cover{position:absolute;inset:0;z-index:4;display:flex;flex-direction:column;align-items:center;justify-content:center;background:rgba(245,244,255,.72);backdrop-filter:blur(5px);border-radius:14px;pointer-events:none}
.start-cover strong{font-size:clamp(25px,6vw,54px);color:#4f46e5}.start-cover span{font-size:12px;color:#65617a;margin-top:4px}
body.game-active .modal-backdrop{padding:8px}
body.game-active .result-modal{max-height:calc(var(--game-viewport-height,100dvh) - 16px);overflow:auto;padding:clamp(18px,4vh,32px)}

@media(min-width:1100px){
  body.game-active .game-layout{gap:6px}
  body.game-active .game-topbar{min-height:56px}
  body.game-active .card-grid{padding:7px;gap:7px}
}
@media(max-width:680px){
  body.game-active .main-content{width:100vw;min-height:0;padding:2px max(2px,env(safe-area-inset-right)) max(2px,env(safe-area-inset-bottom)) max(2px,env(safe-area-inset-left))}
  body.game-active .game-layout{gap:3px}
  body.game-active .game-topbar{min-height:44px;padding:3px 5px;gap:3px;border-radius:11px}
  body.game-active .game-topbar .icon-button{width:31px;height:31px;border-radius:8px}
  body.game-active .game-stat{min-width:42px}
  body.game-active .game-stat small{font-size:7px;letter-spacing:.7px}
  body.game-active .game-stat strong{font-size:15px}
  body.game-active .scoreboard{padding:2px;gap:3px;border-radius:10px}
  body.game-active .player-score{min-height:32px;padding:2px 5px;gap:4px}
  body.game-active .player-score>span{display:none}
  body.game-active .player-score small{font-size:7px}
  body.game-active .player-score strong{font-size:10px;max-width:34vw}
  body.game-active .player-score b{font-size:17px}
  body.game-active .game-message{min-height:17px;padding:1px 7px;font-size:9px;line-height:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  body.game-active .card-grid{gap:3px;padding:3px;border-radius:9px}
  body.game-active .memory-card,body.game-active .card-back,body.game-active .card-face{border-radius:6px}
  body.game-active .card-back>span{font-size:clamp(11px,4vw,20px)}
  body.game-active .card-back:after{inset:9%;border-radius:6px}
  body.game-active .card-face{border-width:1px}
  body.game-active .card-art small{font-size:clamp(5px,1.8vw,8px);margin-top:0}
  body.game-active .kid-art svg{width:86%;height:74%}
}
@media(max-height:520px){
  body.game-active .game-topbar{min-height:38px}
  body.game-active .game-stat strong{font-size:14px}
  body.game-active .scoreboard{display:flex}
  body.game-active .player-score{flex:1;min-height:27px}
  body.game-active .game-message{display:none}
  body.game-active .card-art small{display:none}
  body.game-active .kid-art svg{width:88%;height:88%}
}

body.game-active .memory-card,body.game-active .game-topbar button{user-select:none;-webkit-user-select:none}

body.game-active .memory-card.online-pending .card-inner{transition-duration:.06s}

/* v1.8 always-visible mobile game controls */
.game-topbar-left,.game-topbar-actions{display:flex;align-items:center;gap:6px;flex:0 0 auto}
.game-topbar-stats{display:flex;align-items:center;justify-content:center;gap:clamp(10px,4vw,38px);min-width:0;flex:1 1 auto}

body.game-active{
  width:var(--game-viewport-width,100vw);
  min-width:0;
  position:fixed;
  left:var(--game-viewport-left,0px);
  top:var(--game-viewport-top,0px);
}
body.game-active .app-shell{
  position:fixed;
  left:var(--game-viewport-left,0px);
  top:var(--game-viewport-top,0px);
  width:var(--game-viewport-width,100vw);
  max-width:var(--game-viewport-width,100vw);
  height:var(--game-viewport-height,100dvh);
}
body.game-active .main-content{
  width:100%;
  height:100%;
  padding:max(5px,env(safe-area-inset-top)) max(4px,env(safe-area-inset-right)) max(4px,env(safe-area-inset-bottom)) max(4px,env(safe-area-inset-left));
}
body.game-active .game-topbar{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  justify-content:stretch;
  overflow:visible;
  flex-shrink:0;
}
body.game-active .game-topbar-left,
body.game-active .game-topbar-actions{position:relative;z-index:2}
body.game-active .game-topbar .icon-button{flex:0 0 auto}
body.game-active .game-stat{flex:0 1 auto}

@media(max-width:680px){
  body.game-active .main-content{
    padding:max(5px,env(safe-area-inset-top)) max(3px,env(safe-area-inset-right)) max(3px,env(safe-area-inset-bottom)) max(3px,env(safe-area-inset-left));
  }
  body.game-active .game-topbar{
    min-height:46px;
    grid-template-columns:32px minmax(0,1fr) auto;
    gap:3px;
    padding:4px;
  }
  body.game-active .game-topbar-left,
  body.game-active .game-topbar-actions{gap:3px}
  body.game-active .game-topbar-stats{gap:clamp(5px,2.2vw,11px)}
  body.game-active .game-topbar .icon-button{width:32px;height:32px;min-width:32px}
  body.game-active .game-stat{min-width:0;padding:0 1px}
  body.game-active .game-stat small{font-size:7px;letter-spacing:.45px;white-space:nowrap}
  body.game-active .game-stat strong{font-size:15px;white-space:nowrap}
}

@media(max-width:360px){
  body.game-active .game-topbar{grid-template-columns:30px minmax(0,1fr) auto;padding:3px 2px}
  body.game-active .game-topbar .icon-button{width:30px;height:30px;min-width:30px}
  body.game-active .game-topbar-actions{gap:2px}
  body.game-active .game-topbar-stats{gap:4px}
  body.game-active .game-stat strong{font-size:14px}
  body.game-active .game-stat small{font-size:6px}
}

@media(max-height:430px){
  body.game-active .main-content{padding-top:max(3px,env(safe-area-inset-top))}
  body.game-active .game-topbar{min-height:36px;padding:2px 4px}
  body.game-active .game-topbar .icon-button{width:29px;height:29px;min-width:29px}
  body.game-active .game-stat strong{font-size:13px}
  body.game-active .game-stat small{font-size:6px}
}

/* v1.9 private-room safety, distinct adult artwork, and mobile viewport correction */
.invite-card{width:min(620px,100%);margin:clamp(16px,5vh,64px) auto 0;padding:clamp(24px,5vw,44px);text-align:center}
.invite-badge{display:inline-flex;padding:7px 11px;border-radius:999px;background:#ece9ff;color:#5145c6;font-size:10px;font-weight:950;letter-spacing:1.5px}
.invite-title{display:flex;align-items:center;justify-content:center;gap:14px;margin:22px 0 18px;text-align:left}
.invite-title>span{font-size:48px}.invite-title h2{margin:0 0 5px;font-size:clamp(25px,5vw,38px)}.invite-title p{margin:0;color:var(--muted);font-size:13px;line-height:1.45}
.invite-code{width:min(300px,100%);margin:0 auto 16px;padding:14px;border:2px dashed #7769e9;border-radius:17px;background:white}
.invite-code small,.invite-code strong{display:block}.invite-code small{font-size:9px;letter-spacing:2px;color:var(--muted)}.invite-code strong{font-size:32px;letter-spacing:7px;color:#4f46e5}
.invite-details{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:15px 0}.invite-details span{padding:11px 8px;border-radius:13px;background:#f5f3ff}.invite-details small,.invite-details strong{display:block}.invite-details small{font-size:8px;color:var(--muted);letter-spacing:1px}.invite-details strong{font-size:15px;margin-top:3px}
.invite-name{text-align:left;margin:17px 0}.invite-note{font-size:11px;color:var(--muted);margin:13px 0 0}.invite-status{padding:11px;border-radius:12px;background:#f5f3ff;color:#615ca2;font-size:12px;margin-bottom:14px}
.primary:disabled,.secondary:disabled{cursor:not-allowed;opacity:.55;filter:none}
.adult-art{width:88%;height:88%;max-width:120px;max-height:120px;border-radius:22%;display:flex;flex-direction:column;align-items:center;justify-content:center;background:linear-gradient(145deg,rgba(255,255,255,.98),rgba(244,242,255,.96));box-shadow:inset 0 0 0 2px var(--adult-accent),inset 0 -10px 24px rgba(91,76,240,.08)}
.adult-glyph{font-family:"Segoe UI Symbol","Apple Symbols","Noto Sans Symbols 2",system-ui,sans-serif;font-size:clamp(24px,min(5.2vw,7vh),66px);line-height:1;filter:drop-shadow(0 2px 1px rgba(0,0,0,.08))}
.adult-art small{font-size:clamp(6px,1.1vw,10px);font-weight:900;margin-top:4px;color:#4d4860}
body.game-active{position:fixed!important;inset:0!important;left:0!important;top:0!important;width:100%!important;max-width:100%!important;height:var(--game-viewport-height,100dvh)!important;max-height:var(--game-viewport-height,100dvh)!important;overflow:hidden!important}
body.game-active .app-shell{position:absolute!important;inset:0!important;left:0!important;top:0!important;width:100%!important;max-width:100%!important;height:100%!important;min-height:0!important;overflow:hidden!important}
body.game-active .main-content{position:absolute;inset:0;width:100%!important;height:100%!important;min-height:0!important;padding:max(4px,env(safe-area-inset-top)) max(3px,env(safe-area-inset-right)) max(3px,env(safe-area-inset-bottom)) max(3px,env(safe-area-inset-left))!important;overflow:hidden!important}
body.game-active .game-layout{height:100%;min-height:0;overflow:hidden}
body.game-active .game-topbar{position:relative!important;top:0!important;z-index:40!important;visibility:visible!important;opacity:1!important;transform:none!important;flex:0 0 auto!important}
body.game-active .game-topbar-left,body.game-active .game-topbar-stats,body.game-active .game-topbar-actions{visibility:visible!important;opacity:1!important}
body.game-active .board-wrap{min-height:0;overflow:hidden}
body.game-active .adult-art{width:88%;height:88%;max-width:none;max-height:none}
body.game-active .dense-board .adult-art{width:92%;height:92%}
body.game-active .dense-board .adult-glyph{font-size:clamp(15px,min(4.7vw,6.5vh),48px)}
@media(max-width:680px){
  .invite-card{margin-top:8px;padding:22px 16px}.invite-title{align-items:flex-start}.invite-title>span{font-size:38px}.invite-details{gap:5px}.invite-details span{padding:9px 4px}.invite-code strong{font-size:28px}
  body.game-active .game-topbar{min-height:44px!important;max-height:48px;grid-template-columns:32px minmax(0,1fr) auto!important}
  body.game-active .game-topbar-stats{gap:clamp(4px,2vw,9px)!important}
  body.game-active .game-topbar-actions{max-width:68px}
  body.game-active .adult-art{border-radius:14%}.adult-art small{font-size:6px}
}
@media(max-height:500px){
  body.game-active .game-topbar{min-height:36px!important;max-height:38px}
  body.game-active .scoreboard{min-height:27px}
  body.game-active .adult-art small{display:none}
}


/* v2.0 Safari visual-viewport containment
   The game shell follows Safari's visual viewport rather than the larger layout viewport,
   and reserves the device safe area so the final card row and result actions stay visible. */
html.game-active-root{
  width:100%;
  height:100%;
  overflow:hidden!important;
  overscroll-behavior:none;
  background:#f7f7ff;
}
html.game-active-root body.game-active{
  position:static!important;
  inset:auto!important;
  left:auto!important;
  top:auto!important;
  width:100%!important;
  max-width:none!important;
  height:100%!important;
  max-height:none!important;
  overflow:hidden!important;
}
html.game-active-root body.game-active .app-shell{
  position:fixed!important;
  inset:auto!important;
  left:var(--game-viewport-left,0px)!important;
  top:var(--game-viewport-top,0px)!important;
  width:var(--game-viewport-width,100vw)!important;
  max-width:var(--game-viewport-width,100vw)!important;
  height:var(--game-viewport-height,100svh)!important;
  max-height:var(--game-viewport-height,100svh)!important;
  min-height:0!important;
  overflow:hidden!important;
  transform:translateZ(0);
  -webkit-transform:translateZ(0);
  contain:layout paint size;
}
html.game-active-root body.game-active .main-content{
  position:absolute!important;
  inset:0!important;
  width:100%!important;
  height:100%!important;
  min-height:0!important;
  padding-top:calc(env(safe-area-inset-top,0px) + 4px)!important;
  padding-right:calc(env(safe-area-inset-right,0px) + 3px)!important;
  padding-bottom:calc(env(safe-area-inset-bottom,0px) + var(--game-browser-bottom-guard,2px) + 3px)!important;
  padding-left:calc(env(safe-area-inset-left,0px) + 3px)!important;
  overflow:hidden!important;
}
html.ios-safari.game-active-root body.game-active .main-content{
  padding-bottom:calc(env(safe-area-inset-bottom,0px) + var(--game-browser-bottom-guard,6px) + 5px)!important;
}
html.game-active-root body.game-active .game-layout,
html.game-active-root body.game-active .board-wrap,
html.game-active-root body.game-active .card-grid{
  min-height:0!important;
  max-height:100%;
}
html.game-active-root body.game-active .modal-backdrop{
  inset:0!important;
  padding-top:calc(env(safe-area-inset-top,0px) + 8px)!important;
  padding-right:calc(env(safe-area-inset-right,0px) + 8px)!important;
  padding-bottom:calc(env(safe-area-inset-bottom,0px) + var(--game-browser-bottom-guard,2px) + 8px)!important;
  padding-left:calc(env(safe-area-inset-left,0px) + 8px)!important;
  overflow:hidden!important;
}
html.game-active-root body.game-active .result-modal,
html.game-active-root body.game-active .settings-modal{
  max-height:100%!important;
  overflow:auto!important;
  overscroll-behavior:contain;
  -webkit-overflow-scrolling:touch;
}
@supports(height:100dvh){
  html.game-active-root body.game-active .app-shell{height:var(--game-viewport-height,100dvh)!important}
}