:root{
	--bg1: #0f172a;
	--bg2: #0b1220;
	--card:#0f172a;
	--glass: rgba(255,255,255,0.06);
	--accent-start:#7c3aed;
	--accent-end:#06b6d4;
	--accent:#7c3aed;
}
*{box-sizing:border-box;font-family:Poppins, 'Noto Sans KR', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif}
body{scrollbar-width: auto;margin:0;background:linear-gradient(135deg,var(--bg1),var(--bg2));color:#e6eef8;min-height:100vh;overflow-x:hidden;overscroll-behavior:contain;}
body::-webkit-scrollbar{display:none}
::-webkit-scrollbar{display:none}
html.dragLock, body.dragLock{overflow:hidden}
body.dragLock{user-select:none;touch-action:none}
header{padding:12px 20px;background:linear-gradient(90deg,var(--accent-start),var(--accent-end));color:#fff;box-shadow:0 6px 30px rgba(2,6,23,0.6)}
header h1{margin:0;font-weight:600;letter-spacing:0.4px;font-size:1.4rem}
main{padding:14px;max-width:1100px;margin:10px auto;min-height:calc(100vh - 120px);display:flex;flex-direction:column}
#homeScreen{display:block}
.homeScreen{position:relative;z-index:1}
.hero{max-width:860px;margin:0 auto 30px;text-align:center}
.eyebrow{margin:0 0 10px;letter-spacing:0.24em;font-size:0.82rem;color:#8be9ff}
.hero h2{margin:0;font-size:clamp(2.6rem, 6vw, 5rem);line-height:0.98;letter-spacing:-0.03em}
.heroCopy{margin:18px auto 0;max-width:820px;color:#c7d3ea;font-size:1.08rem;line-height:1.7}
.modeGrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:34px}
.modeCard{min-height:320px;border:0;border-radius:34px;padding:30px;color:#fff;text-align:left;cursor:pointer;position:relative;overflow:hidden;box-shadow:0 24px 55px rgba(2,6,23,0.48);backdrop-filter:blur(14px);transition:transform .22s ease, box-shadow .22s ease, filter .22s ease}
.modeCard:hover{transform:translateY(-6px) scale(1.01);box-shadow:0 26px 56px rgba(2,6,23,0.55)}
.modeCard:focus{outline:none;transform:translateY(-4px) scale(1.01)}
.modeCard::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at top left, rgba(255,255,255,0.18), transparent 42%);pointer-events:none}
.modeCard::after{content:"";position:absolute;inset:auto -12% -22% auto;width:240px;height:240px;border-radius:50%;background:rgba(255,255,255,0.08);filter:blur(4px);pointer-events:none}
.modeIcon{display:flex;align-items:center;justify-content:center;width:126px;height:126px;border-radius:32px;background:rgba(255,255,255,0.16);border:1px solid rgba(255,255,255,0.18);font-size:4rem;font-weight:700;margin-bottom:24px;box-shadow:inset 0 1px 0 rgba(255,255,255,0.2), 0 16px 35px rgba(0,0,0,0.18)}
.modeTitle{display:block;font-size:2rem;font-weight:800;line-height:1.06;margin-bottom:14px;letter-spacing:-0.02em}
.modeDesc{display:block;font-size:1.05rem;line-height:1.7;color:rgba(255,255,255,0.9);max-width:16ch}
.modeKo2En{background:linear-gradient(145deg,#7c3aed,#4f46e5)}
.modeEn2Ko{background:linear-gradient(145deg,#0ea5e9,#06b6d4)}
.modeRandom{background:linear-gradient(145deg,#f59e0b,#ef4444)}
.quizCountPicker{margin:28px auto 0;max-width:860px;display:flex;flex-direction:column;gap:12px;align-items:center;text-align:center}
.pickerLabel{font-size:0.85rem;letter-spacing:0.2em;color:#9ddcff;text-transform:uppercase}
.pickerButtons{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.quizCountBtn{padding:10px 14px;border-radius:999px;border:1px solid rgba(255,255,255,0.16);background:rgba(255,255,255,0.06);color:#fff;cursor:pointer;transition:transform .15s, background .15s, border-color .15s}
.quizCountBtn:hover{transform:translateY(-2px)}
.quizCountBtn.selected{background:linear-gradient(90deg,var(--accent-start),var(--accent-end));border-color:transparent;box-shadow:0 10px 28px rgba(2,6,23,0.35)}
.sessionTopBar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:12px 0 22px}
.sessionLabel{padding:12px 16px;border-radius:999px;background:rgba(255,255,255,0.08);border:1px solid rgba(255,255,255,0.12);box-shadow:0 6px 18px rgba(2,6,23,0.25)}
.ghostBtn{padding:12px 16px;border-radius:12px;border:1px solid rgba(255,255,255,0.16);background:rgba(255,255,255,0.06);color:#fff;cursor:pointer;box-shadow:0 6px 18px rgba(2,6,23,0.35)}
.ghostBtn:hover{transform:translateY(-2px)}
.miniActions{display:flex;justify-content:flex-end;margin-bottom:14px}
.sectionTitle{font-size:1rem;letter-spacing:0.12em;text-transform:uppercase;color:#9ddcff;margin-bottom:14px}
#stats{margin-left:8px;font-size:0.95rem;opacity:0.9}
.statsRow{display:flex;gap:12px;align-items:center;justify-content:space-between;margin-top:22px;flex-wrap:wrap}
.statsHint{color:#a8b6d4;font-size:0.92rem}
.hidden{display:none !important}

/* Flashcard Status Overlay */
.flashTopStats{display:flex;justify-content:center;gap:30px;margin-bottom:20px}
.statBadge{display:flex;flex-direction:column;align-items:center;padding:12px 24px;border-radius:18px;background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,0.08);box-shadow:0 8px 30px rgba(0,0,0,0.25)}
.statVal{font-size:2.8rem;font-weight:800;line-height:1}
.statLbl{font-size:0.9rem;opacity:0.7;margin-top:4px}
.unknownStat .statVal{color:#ef4444;text-shadow:0 0 20px rgba(239,68,68,0.4)}
.knownStat .statVal{color:#10b981;text-shadow:0 0 20px rgba(16,185,129,0.4)}

/* Drag handling tweaks */
.cardWrap{perspective:1800px;display:flex;justify-content:center;position:relative;z-index:1;margin:10px 0;touch-action:none}
.card{width:100%;max-width:480px;height:340px;background:transparent;border-radius:24px;position:relative;cursor:grab;outline:none;transform:translateZ(0);filter:drop-shadow(0 30px 50px rgba(0,0,0,0.35));touch-action:none;user-select:none}
.card:active{cursor:grabbing}
.cardInner{width:100%;height:100%;border-radius:24px;transform-style:preserve-3d;transition:transform .8s cubic-bezier(.2,.9,.3,1);position:relative;overflow:hidden}
.cardButtons{display:flex;gap:12px;justify-content:center;margin-top:16px;flex-wrap:wrap}
.cardButtons button{padding:12px 16px;border-radius:12px;border:0;background:linear-gradient(90deg,var(--accent-start),var(--accent-end));color:#fff;font-weight:600;cursor:pointer;box-shadow:0 10px 30px rgba(124,58,237,0.14);transition:transform .15s}
.cardButtons button:hover{transform:translateY(-3px)}
.cardButtons #dontKnowBtn{background:linear-gradient(90deg,#ef4444,#f97316)}
.cardButtons #skipBtn{background:rgba(255,255,255,0.08)}
.card.is-skip{border:2px solid rgba(148,163,184,0.6);box-shadow:0 0 30px rgba(148,163,184,0.25)}

.dragOverlay{position:absolute;inset:0;pointer-events:none}
.dragLabel{position:absolute;font-size:2.2rem;font-weight:800;letter-spacing:0.12em;opacity:0;transform:translateY(6px);transition:opacity .15s ease, transform .15s ease;text-shadow:0 8px 22px rgba(0,0,0,0.35)}
.dragLabel.left{left:30%;top:38%;color:rgba(16,185,129,0.55)}
.dragLabel.right{right:30%;top:38%;color:rgba(239,68,68,0.52)}
.dragLabel.down{left:50%;bottom:14%;transform:translate(-50%, 6px);color:rgba(148,163,184,0.75)}
.dragDivider{position:absolute;top:12%;bottom:12%;left:50%;width:2px;background:rgba(255,255,255,0.18);opacity:0;transition:opacity .15s ease}
.cardWrap.show-left .dragLabel.left{opacity:1;transform:translateY(0)}
.cardWrap.show-right .dragLabel.right{opacity:1;transform:translateY(0)}
.cardWrap.show-down .dragLabel.down{opacity:1;transform:translate(-50%, 0)}
.cardWrap.show-left .dragDivider,.cardWrap.show-right .dragDivider{opacity:0.7}
.card::before{content:"";position:absolute;inset:10px 14px -10px 14px;background:linear-gradient(135deg, rgba(124,58,237,0.36), rgba(6,182,212,0.18));filter:blur(26px);opacity:0.7;z-index:-1;border-radius:28px;transform:translateY(18px) scale(0.98);transition:transform .45s ease,opacity .45s ease}
.card:hover::before{opacity:0.9;transform:translateY(10px) scale(1)}
.side{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;padding:28px;border-radius:24px;color:#fff;overflow:hidden}
.side::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at top left, rgba(255,255,255,0.18), transparent 42%);pointer-events:none}
.frontSide{background:linear-gradient(145deg, rgba(255,255,255,0.14), rgba(255,255,255,0.05));border:1px solid rgba(255,255,255,0.14);box-shadow:inset 0 1px 0 rgba(255,255,255,0.16)}
.backSide{background:linear-gradient(145deg, rgba(15,23,42,0.96), rgba(3,7,18,0.96));border:1px solid rgba(255,255,255,0.08)}

/* Force deterministic side visibility */
#cardFront{display:flex}
#cardBack{display:none}
.card.show-back #cardFront{display:none}
.card.show-back #cardBack{display:flex}
.side .textInner{display:flex;flex-direction:column;align-items:center;gap:10px;font-size:2.25rem;font-weight:700;line-height:1.18;text-align:center;padding:6px 14px;max-width:92%;letter-spacing:0.4px;text-shadow:0 8px 30px rgba(0,0,0,0.28)}
.badge{display:inline-flex;align-items:center;justify-content:center;padding:7px 14px;border-radius:999px;background:rgba(255,255,255,0.14);border:1px solid rgba(255,255,255,0.18);font-size:0.82rem;letter-spacing:0.18em;text-transform:uppercase}
.mainText{font-size:clamp(1.8rem, 4vw, 2.8rem);font-weight:700;line-height:1.1}
.side .sub{display:block;margin-top:10px;font-size:1rem;opacity:0.85;font-weight:400}

.card:active{transform:none}
.card.flipped{transform:translateY(-2px)}

@keyframes cardPop{
	0%{transform:translateY(12px) scale(0.98);opacity:0}
	100%{transform:translateY(0) scale(1);opacity:1}
}


@keyframes flipPulse{
	0%{transform:scaleX(1)}
	50%{transform:scaleX(0.06)}
	100%{transform:scaleX(1)}
}
.cardInner.flipPulse{animation:flipPulse .3s cubic-bezier(.2,.9,.3,1)}

.resultArea{display:flex;justify-content:center;align-items:center;height:100%;margin-top:20px}
.resultBox{background:var(--card);padding:40px;border-radius:24px;text-align:center;box-shadow:0 24px 55px rgba(2,6,23,0.48);border:1px solid rgba(255,255,255,0.06);max-width:500px;width:100%}
.resultActions{display:flex;flex-direction:column;gap:12px;margin-top:28px}
.resultBox button{width:100%;padding:14px;border-radius:12px;font-size:1.05rem;font-weight:600;border:none;cursor:pointer;transition:transform 0.15s ease}
.resultBox button:hover{transform:translateY(-2px)}
.accentBtn{background:linear-gradient(90deg,var(--accent-start),var(--accent-end));color:#fff}
.scoreText{font-size:1.5rem;font-weight:700;color:#9ddcff;margin-top:10px}

.quizResultBox{position:relative;overflow:hidden;isolation:isolate;transform:translateZ(0)}
.quizResultBox > :not(.quizEffectHost){position:relative;z-index:1}
.quizEffectHost{position:absolute;inset:0;pointer-events:none;overflow:hidden;z-index:0}
.quizResultBox::before{content:"";position:absolute;inset:-35%;pointer-events:none;opacity:0.96;filter:blur(12px);animation:quizAuraFloat 9s ease-in-out infinite;z-index:0}
.quizResultBox[data-tier="low"]::before{background:radial-gradient(circle at top, rgba(248,113,113,0.22), transparent 58%), radial-gradient(circle at 82% 20%, rgba(249,115,22,0.16), transparent 28%)}
.quizResultBox[data-tier="steady"]::before{background:radial-gradient(circle at top, rgba(34,211,238,0.24), transparent 58%), radial-gradient(circle at 18% 20%, rgba(96,165,250,0.14), transparent 30%)}
.quizResultBox[data-tier="strong"]::before{background:radial-gradient(circle at top, rgba(52,211,153,0.24), transparent 56%), radial-gradient(circle at 82% 22%, rgba(250,204,21,0.12), transparent 28%)}
.quizResultBox[data-tier="perfect"]::before{background:radial-gradient(circle at top, rgba(250,204,21,0.3), transparent 54%), radial-gradient(circle at 50% 22%, rgba(255,255,255,0.16), transparent 28%)}
.quizResultBox[data-tier="low"] .scoreText{color:#fca5a5}
.quizResultBox[data-tier="steady"] .scoreText{color:#9ddcff}
.quizResultBox[data-tier="strong"] .scoreText{color:#6ee7b7}
.quizResultBox[data-tier="perfect"] .scoreText{color:#facc15}
.quizPulse{position:absolute;left:var(--x);top:var(--y);width:var(--size);height:var(--size);margin-left:calc(var(--size) / -2);margin-top:calc(var(--size) / -2);border-radius:50%;background:var(--pulse-color);filter:blur(var(--blur));opacity:0;animation:quizPulseFloat var(--duration) ease-out var(--delay) forwards}
.quizRing{position:absolute;left:50%;top:52%;width:var(--size);height:var(--size);margin-left:calc(var(--size) / -2);margin-top:calc(var(--size) / -2);border-radius:50%;border:2px solid var(--ring-color);box-shadow:0 0 24px var(--ring-color);opacity:0;animation:quizRingPop var(--duration) cubic-bezier(.2,.9,.25,1) var(--delay) forwards}
.quizParticle{position:absolute;left:50%;top:56%;width:var(--size);height:var(--size);border-radius:999px;background:var(--particle-color);box-shadow:0 0 18px var(--particle-color);opacity:0;animation:quizParticleFly var(--duration) cubic-bezier(.2,.9,.25,1) var(--delay) forwards}
.quizSpark{width:calc(var(--size) * 1.9);height:calc(var(--size) * 0.42);border-radius:999px;filter:drop-shadow(0 0 8px var(--particle-color))}
@keyframes quizAuraFloat{0%,100%{transform:translate3d(0,0,0) scale(1)}50%{transform:translate3d(0,-10px,0) scale(1.05)}}
@keyframes quizPulseFloat{0%{transform:scale(0.55);opacity:0}15%{opacity:0.95}100%{transform:scale(1.7);opacity:0}}
@keyframes quizRingPop{0%{transform:scale(0.35);opacity:0}14%{opacity:0.85}100%{transform:scale(1.55);opacity:0}}
@keyframes quizParticleFly{0%{transform:translate(0,0) scale(0.5);opacity:0}12%{opacity:1}80%{opacity:0.96}100%{transform:translate(var(--dx), var(--dy)) scale(1.1);opacity:0}}

/* Enhanced Quiz UI */
#quizPrompt{font-size:2.4rem;font-weight:800;padding:40px 20px;text-align:center;background:linear-gradient(145deg, rgba(255,255,255,0.1), rgba(255,255,255,0.02));border-radius:20px;box-shadow:0 12px 40px rgba(0,0,0,0.3);margin:20px auto;max-width:640px;color:#fff}
#quizInput{font-size:1.4rem;padding:18px 24px;border-radius:16px;border:2px solid rgba(255,255,255,0.12);background:rgba(0,0,0,0.2);color:#fff;width:100%;max-width:640px;margin:24px auto 0;display:block;text-align:center;transition:border-color 0.2s}
#quizInput:focus{outline:none;border-color:var(--accent-end)}
.quizButtons{display:flex;gap:16px;justify-content:center;margin-top:24px;max-width:640px;margin-left:auto;margin-right:auto}
.quizButtons button{flex:1;padding:16px;font-size:1.1rem;border-radius:14px;border:0;background:var(--glass);color:#fff;font-weight:600;cursor:pointer;transition:transform 0.2s, background 0.2s}
.quizButtons button:hover{background:rgba(255,255,255,0.12);transform:translateY(-2px)}
.quizButtons #submitAnswer{background:linear-gradient(90deg,var(--accent-start),var(--accent-end))}
#quizFeedback{text-align:center;font-size:1.3rem;font-weight:600;margin-top:20px;min-height:30px}
footer{padding:12px 20px;text-align:center;color:#cbd5e1}

/* CSV update toast */
.toastHost{position:fixed;top:18px;right:18px;display:flex;flex-direction:column;gap:10px;z-index:1000}
.toast{display:flex;align-items:flex-start;gap:12px;min-width:280px;max-width:360px;background:rgba(15,23,42,0.96);border:1px solid rgba(255,255,255,0.12);border-radius:14px;padding:12px 12px 10px;box-shadow:0 12px 30px rgba(2,6,23,0.45);animation:toastIn .25s ease}
.toastText{font-size:0.92rem;line-height:1.4;color:#e6eef8}
.toastActions{display:flex;gap:8px;margin-top:8px}
.toastBtn{padding:6px 10px;border-radius:8px;border:1px solid rgba(255,255,255,0.16);background:rgba(255,255,255,0.06);color:#fff;cursor:pointer;font-size:0.82rem}
.toastClose{margin-left:auto;border:0;background:transparent;color:#a8b6d4;font-size:1rem;cursor:pointer}
@keyframes toastIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}

/* Nice reveal animation for text */
.reveal{opacity:0;transform:translateY(10px);animation:reveal .45s forwards cubic-bezier(.2,.9,.3,1)}
@keyframes reveal{to{opacity:1;transform:none}}

/* Subtle floating background shapes */
@keyframes floaty{0%{transform:translateY(0) translateX(0)}50%{transform:translateY(-20px) translateX(8px)}100%{transform:translateY(0) translateX(0)}}
.floaty{position:absolute;border-radius:50%;filter:blur(28px);opacity:0.6}
.floaty.one{width:260px;height:260px;left:-40px;top:-40px;background:rgba(124,58,237,0.12);animation:floaty 8s ease-in-out infinite}
.floaty.two{width:360px;height:360px;right:-80px;bottom:-80px;background:rgba(6,182,212,0.07);animation:floaty 11s ease-in-out infinite}

/* input & quiz styles */
#quizInput{padding:12px 14px;border-radius:10px;border:0;background:rgba(255,255,255,0.04);color:inherit;width:100%;max-width:640px;margin-top:12px}
.quizButtons{display:flex;gap:8px;margin-top:10px}
.quizButtons button{padding:10px 14px;border-radius:10px;border:0;background:var(--glass);color:inherit}

/* responsive */
@media(max-width:720px){
	.modeGrid{grid-template-columns:1fr}
	.modeCard{min-height:220px;padding:22px}
	.modeIcon{width:88px;height:88px;font-size:3rem}
	.modeTitle{font-size:1.5rem}
	.modeDesc{font-size:0.98rem}
	.sessionTopBar{align-items:flex-start;flex-direction:column}
	.statsRow{align-items:flex-start}
	.side .textInner{font-size:1.4rem}
	.card{height:220px}
}

/* V3: card details, timed quizzes, answer review, animated score and ranking */
button, input { font: inherit; }
.homeActions{display:flex;flex-direction:column;align-items:center;gap:12px;margin:28px auto 0}
.rankHomeBtn{min-width:180px}
.dataStatus{font-size:.9rem;color:#a8b6d4;text-align:center;line-height:1.55;max-width:760px}
.dataStatus.error{color:#fca5a5}
.cardWrap{padding-top:16px;touch-action:none}
.relationToggle{position:absolute;right:max(4px, calc((100% - 480px)/2 + 8px));top:0;z-index:5;max-width:70%;padding:6px 10px;border:1px solid rgba(255,255,255,.13);border-radius:999px;background:rgba(8,15,32,.54);color:#dbeafe;font-size:.72rem;opacity:.43;cursor:pointer;transition:opacity .2s, background .2s,border-color .2s;backdrop-filter:blur(8px)}
.relationToggle:hover,.relationToggle:focus-visible{opacity:1}
.relationToggle.active{opacity:.9;background:rgba(6,182,212,.19);border-color:rgba(103,232,249,.55);color:#a5f3fc}
.side .textInner{max-height:100%;overflow-y:auto;overscroll-behavior:contain}
.flashFrontMeanings .mainText{display:block;margin-bottom:4px}
.secondaryMeaning{display:block;font-size:clamp(.9rem,2.2vw,1.15rem);font-weight:500;line-height:1.4;opacity:.9;max-width:100%;overflow-wrap:anywhere}
.flashDetails{display:block!important;width:100%;max-width:100%!important;text-align:left;padding:2px 2px 8px!important;font-size:1rem!important;line-height:1.35!important;letter-spacing:0!important;text-shadow:none!important;overflow:auto;max-height:100%}
.detailTop{display:flex;align-items:center;justify-content:center;gap:6px;flex-wrap:wrap;margin-bottom:8px}
.detailTop .badge{font-size:.65rem;padding:4px 9px;letter-spacing:.08em}
.metaPill{display:inline-flex;align-items:center;border-radius:999px;padding:3px 8px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);font-size:.68rem;color:#cbd5e1}
.detailWord{text-align:center;font-weight:800;font-size:clamp(1.35rem,3vw,2rem);line-height:1.1;overflow-wrap:anywhere;margin:4px 0 12px;color:#f8fafc}
.detailSection{margin-top:9px;padding-top:8px;border-top:1px solid rgba(255,255,255,.09)}
.detailLabel{display:block;color:#9ddcff;font-size:.68rem;font-weight:700;letter-spacing:.04em;margin-bottom:5px}
.meaningPrimary{font-size:clamp(1.05rem,2.4vw,1.35rem);font-weight:800;line-height:1.35;text-align:center;overflow-wrap:anywhere}
.meaningList,.otherList{margin:4px 0 0;padding-left:21px;font-size:.86rem;line-height:1.45;color:#dbe5f4;overflow-wrap:anywhere}
.meaningList li,.otherList li{padding:2px 0}
.relationsGrid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.detailValues{display:flex;flex-wrap:wrap;gap:4px}
.wordPill{font-size:.73rem;line-height:1.3;padding:4px 7px;border-radius:8px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.1);overflow-wrap:anywhere;max-width:100%}
.emptyValue{font-size:.75rem;opacity:.5}
.cardInner{overflow:visible}
.frontSide,.backSide{overflow:hidden}
.timerStat .statVal{color:#67e8f9}
.timerStat.timerDanger .statVal{color:#fb7185;animation:timerPulse .8s infinite alternate}
@keyframes timerPulse{to{transform:scale(1.08);text-shadow:0 0 22px rgba(251,113,133,.8)}}
.timerStat{padding-bottom:17px}
.timerStat .statLbl{margin-top:8px;position:relative;top:4px}
.timerTrack{width:min(640px,100%);height:7px;border-radius:999px;background:rgba(255,255,255,.09);overflow:hidden;margin:0 auto 13px}
.timerBar{height:100%;width:100%;border-radius:inherit;background:linear-gradient(90deg,#10b981,#67e8f9);transform:scaleX(1);transform-origin:left center;will-change:transform;transition:background .2s}
.timerBar.timerDangerBar{background:linear-gradient(90deg,#ef4444,#fb7185)}
.quizProgress{text-align:center;font-size:.82rem;color:#94a3b8;letter-spacing:.08em}
#quizPrompt{white-space:pre-wrap;overflow-wrap:anywhere;margin:14px auto 10px}
.quizButtons button:disabled,.resultActions button:disabled{opacity:.45;cursor:not-allowed;transform:none}
#quizFeedback{min-height:34px}
.feedbackCorrect{color:#34d399!important}
.feedbackWrong{color:#f87171!important}
.logPanel,.resultLogSection{margin:28px 0 0;padding:18px;border:1px solid rgba(255,255,255,.1);border-radius:18px;background:rgba(3,7,18,.32);text-align:left}
.logPanelHead{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:12px}
.logPanelHead h3,.rankingDetailHeader h3{margin:0;font-size:1.08rem}
.logPanelHead span{font-size:.82rem;color:#94a3b8}
.tableScroll{width:100%;overflow:auto;border-radius:10px;overscroll-behavior:contain}
.questionTable,.rankingTable{width:100%;min-width:760px;border-collapse:separate;border-spacing:0;font-size:.83rem;text-align:left}
.questionTable th,.rankingTable th{position:sticky;top:0;z-index:1;background:#17233a;color:#cfe5ff;font-weight:700;white-space:nowrap}
.questionTable th,.questionTable td,.rankingTable th,.rankingTable td{padding:10px 11px;border-bottom:1px solid rgba(255,255,255,.07);vertical-align:top;max-width:280px;overflow-wrap:anywhere}
.questionTable td{color:#dbe5f4}
.questionTable tr.logCorrect td{background:rgba(16,185,129,.055)}
.questionTable tr.logWrong td{background:rgba(239,68,68,.06)}
.questionTable tr.rowProcessing td{box-shadow:inset 0 0 0 999px rgba(103,232,249,.13);transition:background .15s}
.questionTable tbody tr:last-child td,.rankingTable tbody tr:last-child td{border-bottom:0}
.resultBadgeCell{font-weight:800;white-space:nowrap}
.correctBadge{color:#34d399!important}
.wrongBadge{color:#f87171!important}
.greenText{color:#34d399}.redText{color:#f87171}
.resultAreaWide{align-items:flex-start}
.quizResultBox{max-width:1050px!important;width:100%;padding:clamp(18px,3vw,34px)!important;text-align:left;overflow:hidden}
.resultHeading{display:flex;gap:18px;align-items:center;margin-bottom:18px}
.resultEmoji{display:flex;align-items:center;justify-content:center;flex:0 0 64px;height:64px;border-radius:20px;font-weight:800;font-size:1.1rem;background:linear-gradient(145deg,rgba(124,58,237,.28),rgba(6,182,212,.16));border:1px solid rgba(255,255,255,.1);text-align:center}
.resultHeading .eyebrow{margin:0 0 3px;font-size:.7rem}
.resultHeading h2{margin:0;font-size:clamp(1.5rem,3vw,2.3rem)}
.muted{color:#9fb0ca;line-height:1.55;margin:7px 0 0;font-size:.9rem}
.scoreStage{position:relative;margin:20px 0 12px;padding:22px 10px 18px;border-radius:20px;border:1px solid rgba(255,255,255,.08);background:rgba(0,0,0,.16);overflow:hidden}
.scoreCounters{display:flex;align-items:stretch;justify-content:center;gap:clamp(8px,2vw,24px);max-width:820px;margin:0 auto;position:relative}
.scoreCounter{position:relative;flex:1;min-width:0;display:flex;align-items:center;justify-content:center;flex-direction:column;padding:15px 10px;border-radius:16px;background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.09);transition:transform .7s cubic-bezier(.16,1,.3,1),opacity .5s,filter .5s;overflow:visible}
.baseCounter strong{color:#6ee7b7}.timeCounter strong{color:#67e8f9}
.counterLabel{color:#b7c7de;font-size:.8rem;text-align:center}
.scoreCounter strong{font-size:clamp(2.2rem,5vw,3.4rem);font-weight:800;line-height:1.18;font-variant-numeric:tabular-nums;transition:text-shadow .2s}
.counterUnit{color:#9fb0ca;font-size:.75rem}
.counterActive strong{text-shadow:0 0 20px currentColor}
.scoreOperator{display:flex;align-items:center;justify-content:center;flex:0 0 0;width:0;overflow:visible;opacity:0;transform:scale(.3);font-size:2.4rem;font-weight:800;color:#fff;text-shadow:0 0 20px #fff;transition:opacity .35s,transform .45s}
.scoreOperator.visible{opacity:1;transform:scale(1.15)}
.scoreFloat{position:absolute;top:43%;left:50%;z-index:4;font-size:1.35rem;font-weight:800;opacity:0;pointer-events:none;white-space:nowrap}
.baseCounter .scoreFloat{color:#34d399}.timeCounter .scoreFloat{color:#67e8f9}
.scoreFloat.show{animation:floatScore .95s cubic-bezier(.16,1,.3,1) forwards}
@keyframes floatScore{0%{opacity:0;transform:translate(-50%,15px) scale(.75)}18%{opacity:1;transform:translate(-50%,0) scale(1.15)}70%{opacity:1;transform:translate(-50%,-28px) scale(1)}100%{opacity:0;transform:translate(-50%,-48px) scale(.9)}}
.mergeLine{height:4px;width:0;margin:22px auto 0;border-radius:9px;background:linear-gradient(90deg,#34d399,#fff,#67e8f9);box-shadow:0 0 25px rgba(103,232,249,.6);transition:width .4s cubic-bezier(.16,1,.3,1)}
.mergeLine.visible{width:min(82%,690px)}
.scoreStage.merging .baseCounter{transform:translateX(58%) scale(.82);opacity:.35;filter:blur(.5px)}
.scoreStage.merging .timeCounter{transform:translateX(-58%) scale(.82);opacity:.35;filter:blur(.5px)}
.scoreStage.merging .scoreOperator{transform:scale(2.2);color:#f8fafc;text-shadow:0 0 35px #fff}
.finalScorePanel{display:flex;align-items:center;flex-direction:column;gap:4px;max-height:0;opacity:0;transform:translateY(20px) scale(.8);overflow:hidden;transition:opacity .35s,transform .6s cubic-bezier(.16,1,.3,1),max-height .45s;padding:0}
.finalScorePanel.visible{max-height:190px;opacity:1;transform:translateY(0) scale(1);padding:14px 0 2px}
.finalScorePanel span{font-size:.85rem;color:#cbd5e1;letter-spacing:.12em}
.finalScorePanel strong{font-size:clamp(3rem,7vw,5rem);line-height:1.1;font-weight:800;color:#facc15;text-shadow:0 0 30px rgba(250,204,21,.24);font-variant-numeric:tabular-nums}
.finalScorePanel small{font-size:.8rem;color:#cbd5e1;text-align:center}
.scoreAnimationStatus{text-align:center;color:#93a4bf;font-size:.8rem;margin-top:12px;min-height:1.3em}
.resultLogSection{margin-top:16px}
.resultTableScroll{max-height:400px}
.resultQuestionTable tr{animation:rowIn .24s ease both;animation-delay:var(--row-delay,0ms)}
@keyframes rowIn{from{opacity:.35;transform:translateY(5px)}to{opacity:1;transform:none}}
.resultActionsGrid{display:grid!important;grid-template-columns:repeat(2,minmax(0,1fr));margin-top:18px!important}
.resultActionsGrid button{font-size:.92rem!important}
.rankingArea{padding:18px 0 30px}
.rankingHeader{display:flex;justify-content:space-between;align-items:flex-start;gap:18px;margin:12px 0 24px}
.rankingHeader h2{font-size:clamp(2rem,5vw,3.4rem);line-height:1.05;margin:0}
.rankingHeader .eyebrow{margin:0 0 6px}
.rankingTabs{display:flex;gap:8px;flex-wrap:wrap;margin:20px 0 15px}
.rankingTab{border:1px solid rgba(255,255,255,.14);border-radius:999px;padding:11px 16px;color:#e2e8f0;background:rgba(255,255,255,.055);cursor:pointer}
.rankingTab.selected{background:linear-gradient(90deg,var(--accent-start),var(--accent-end));border-color:transparent;font-weight:800}
.rankingStatus{min-height:25px;color:#9fb0ca;font-size:.9rem;margin:0 0 12px}
.rankingTableScroll{max-height:70vh;border:1px solid rgba(255,255,255,.08);background:rgba(3,7,18,.25)}
.rankingTable{min-width:700px}
.rankingTable th{padding:13px 12px}
.rankingTable td{padding:12px;border-bottom:1px solid rgba(255,255,255,.07);color:#e2e8f0}
.rankingTable tbody tr:nth-child(1) .rankPosition{color:#facc15;font-size:1.08rem;font-weight:800}
.rankingTable tbody tr:nth-child(2) .rankPosition{color:#cbd5e1;font-weight:800}
.rankingTable tbody tr:nth-child(3) .rankPosition{color:#fda4af;font-weight:800}
.rankScore{font-weight:800;color:#67e8f9!important;font-variant-numeric:tabular-nums;white-space:nowrap}
.rankPosition{white-space:nowrap;font-weight:700}
.detailBtn{padding:7px 10px;background:rgba(103,232,249,.11);border:1px solid rgba(103,232,249,.24);border-radius:8px;color:#a5f3fc;cursor:pointer;white-space:nowrap}
.detailBtn:hover{background:rgba(103,232,249,.2)}
.rankingDetail{margin-top:28px;padding:18px;border:1px solid rgba(255,255,255,.1);border-radius:16px;background:rgba(3,7,18,.32)}
.rankingDetailHeader{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:16px}
.rankingDetailHeader h3{font-size:1.3rem;overflow-wrap:anywhere}
.modalOverlay{position:fixed;inset:0;z-index:2000;display:flex;align-items:center;justify-content:center;padding:20px;background:rgba(1,5,15,.78);backdrop-filter:blur(12px)}
.modalOverlay.hidden{display:none!important}
.modalCard{position:relative;width:min(460px,100%);padding:30px;border-radius:22px;border:1px solid rgba(255,255,255,.14);background:#111d31;box-shadow:0 30px 90px rgba(0,0,0,.5)}
.modalCard h2{margin:0;font-size:1.9rem}
.modalCard .eyebrow{margin:0 0 7px}
.modalCard label{display:block;color:#dbeafe;font-size:.85rem;margin:20px 0 7px}
#rankNameInput{width:100%;padding:13px 14px;border-radius:11px;border:1px solid rgba(255,255,255,.16);background:rgba(0,0,0,.22);color:#fff;outline:none}
#rankNameInput:focus{border-color:#67e8f9;box-shadow:0 0 0 3px rgba(103,232,249,.1)}
.modalClose{position:absolute;right:14px;top:10px;width:36px;height:36px;border:0;background:transparent;color:#94a3b8;font-size:1.8rem;cursor:pointer}
.modalActions{display:flex;gap:10px;margin-top:18px}
.modalActions button{flex:1;padding:12px;border-radius:10px;border:0;cursor:pointer}
.rankSubmitError{min-height:20px;color:#fca5a5;font-size:.83rem;margin-top:6px}
.toastHost{z-index:2100}
.toast{align-items:center}

@media(max-width:720px){
  .relationsGrid{grid-template-columns:1fr}
  .card{height:300px}
  .side{padding:16px}
  .flashDetails{font-size:.9rem!important}
  .detailWord{font-size:1.35rem}
  .meaningPrimary{font-size:1.05rem}
  .meaningList,.otherList{font-size:.77rem}
  .scoreCounters{gap:6px}
  .scoreCounter{padding:12px 5px}
  .counterLabel{font-size:.7rem}
  .scoreOperator{font-size:1.8rem}
  .scoreStage.merging .baseCounter{transform:translateX(42%) scale(.78)}
  .scoreStage.merging .timeCounter{transform:translateX(-42%) scale(.78)}
  .resultActionsGrid{grid-template-columns:1fr}
  .resultHeading{align-items:flex-start}
  .resultEmoji{flex-basis:50px;height:50px;border-radius:14px;font-size:.9rem}
  .rankingHeader{flex-direction:column}
  .logPanel,.resultLogSection,.rankingDetail{padding:12px}
  .modalCard{padding:24px}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}

/* V3.1 refinement: countdown briefing, legible sticky headers, visible rank scrolling */
.tableScroll{position:relative;isolation:isolate;scrollbar-width:thin;scrollbar-color:rgba(148,163,184,.55) rgba(15,23,42,.55)}
.tableScroll::-webkit-scrollbar{display:block;width:10px;height:10px}
.tableScroll::-webkit-scrollbar-track{background:rgba(15,23,42,.7);border-radius:10px}
.tableScroll::-webkit-scrollbar-thumb{background:rgba(148,163,184,.55);border:2px solid rgba(15,23,42,.7);border-radius:10px}
.tableScroll::-webkit-scrollbar-thumb:hover{background:rgba(186,200,220,.8)}
.questionTable,.rankingTable{border-collapse:separate;border-spacing:0}
.questionTable thead,.rankingTable thead{position:relative;z-index:20}
.questionTable th,.rankingTable th{position:sticky;top:0;z-index:25;background:#111d31!important;background-clip:padding-box;box-shadow:0 1px 0 rgba(148,163,184,.3),0 5px 10px rgba(0,0,0,.16);isolation:isolate}
.questionTable tbody tr,.rankingTable tbody tr{position:relative;z-index:0}
.resultQuestionTable tr{animation-fill-mode:both}
.resultQuestionTable th{z-index:35}
.rankingTableScroll{max-height:min(70vh,680px);overflow:auto;overscroll-behavior:contain;scrollbar-gutter:stable}
#rankingDetail .tableScroll{max-height:55vh;overflow:auto}

.quizStartCard{width:min(560px,100%);max-height:min(90vh,760px);overflow-y:auto;scrollbar-width:thin}
.quizStartCard h2{padding-right:22px}
.quizBriefGrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:22px}
.quizBriefItem{display:flex;flex-direction:column;gap:8px;min-width:0;padding:15px 13px;border:1px solid rgba(148,163,184,.15);border-radius:14px;background:rgba(2,8,23,.42)}
.quizBriefItem span{color:#94a3b8;font-size:.76rem}
.quizBriefItem strong{font-size:1rem;line-height:1.35;overflow-wrap:anywhere;color:#f1f5f9}
.quizStartRankNotice{margin-top:14px;padding:15px 16px;border:1px solid rgba(148,163,184,.2);border-radius:14px;background:rgba(148,163,184,.06)}
.quizStartRankNotice strong{font-size:.94rem;display:block}
.quizStartRankNotice p{font-size:.82rem;margin-top:6px}
.quizStartRankNotice.eligible{border-color:rgba(52,211,153,.36);background:rgba(16,185,129,.08)}
.quizStartRankNotice.eligible strong{color:#6ee7b7}
.quizStartRankNotice.ineligible{border-color:rgba(148,163,184,.2);background:rgba(148,163,184,.055)}
.quizStartRankNotice.ineligible strong{color:#cbd5e1}
.quizCountdown{display:flex;align-items:center;justify-content:center;min-height:220px;font-size:clamp(6rem,24vw,9rem);line-height:1;font-weight:800;letter-spacing:-.06em;color:#67e8f9;text-shadow:0 0 36px rgba(103,232,249,.42)}
.quizCountdown.countPulse{animation:quizCountPop .68s cubic-bezier(.16,1,.3,1) both}
@keyframes quizCountPop{0%{opacity:0;transform:scale(1.55);filter:blur(8px)}22%{opacity:1;transform:scale(1);filter:blur(0)}75%{opacity:1;transform:scale(1);filter:blur(0)}100%{opacity:.8;transform:scale(.86);filter:blur(1px)}}
.quizStartCard .modalActions button:disabled{opacity:.45;cursor:wait}

/* Let the addends fade out before they overlap at the center. */
.scoreCounter{transition:transform .78s cubic-bezier(.16,1,.3,1),opacity .7s ease,filter .75s ease}
.scoreStage.merging .baseCounter{transform:translateX(68%) scale(.72);opacity:.035;filter:blur(5px)}
.scoreStage.merging .timeCounter{transform:translateX(-68%) scale(.72);opacity:.035;filter:blur(5px)}
.scoreStage.merged .baseCounter,.scoreStage.merged .timeCounter{transform:translateX(0) scale(.38);opacity:0;filter:blur(14px);visibility:hidden;pointer-events:none}
.scoreStage.merged .scoreOperator{opacity:0;transform:scale(2.8);filter:blur(5px);transition:opacity .32s ease,transform .5s cubic-bezier(.16,1,.3,1),filter .4s ease}

@media(max-width:560px){
  .quizBriefGrid{grid-template-columns:1fr}
  .quizBriefItem{flex-direction:row;align-items:center;justify-content:space-between;gap:12px;padding:12px 13px}
  .quizBriefItem strong{text-align:right}
  .quizCountdown{min-height:180px}
}

/* Admin entry point */
.adminEntry{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;white-space:nowrap;font-size:.9rem;padding:9px 13px;opacity:.8}
.adminEntry:hover{opacity:1}