:root{--bg-gradient:linear-gradient(135deg, #0d0f18 0%, #171929 50%, #101222 100%);--card-bg:#ffffff0d;--card-border:#ffffff1a;--card-backdrop:blur(16px);--primary-pink:#ff477e;--primary-pink-glow:#ff477e66;--accent-cyan:#00f2fe;--accent-cyan-glow:#00f2fe59;--accent-purple:#7928ca;--accent-orange:#f90;--text-main:#f8fafc;--text-muted:#94a3b8;--text-dark:#0f172a;--success-color:#10b981;--success-bg:#10b98126;--danger-color:#ef4444;--danger-bg:#ef444426;--radius-sm:8px;--radius-md:14px;--radius-lg:24px;--radius-xl:32px;--font-family:"Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-japanese:"Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;margin:0;padding:0}body{background:var(--bg-gradient);color:var(--text-main);font-family:var(--font-family);flex-direction:column;min-height:100vh;display:flex;overflow-x:hidden}#root{flex-direction:column;min-height:100vh;display:flex}.app-container{flex-direction:column;flex:1;width:100%;max-width:900px;margin:0 auto;padding:16px;display:flex}.navbar-container{-webkit-backdrop-filter:var(--card-backdrop);border:1px solid var(--card-border);border-radius:var(--radius-lg);background:#171929b3;margin-bottom:24px;padding:16px 20px;box-shadow:0 10px 30px #0000004d}.navbar-top{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;margin-bottom:16px;display:flex}.brand-logo{align-items:center;gap:12px;display:flex}.logo-badge{background:linear-gradient(135deg, var(--primary-pink), var(--accent-purple));width:44px;height:44px;box-shadow:0 0 15px var(--primary-pink-glow);border-radius:12px;justify-content:center;align-items:center;display:flex}.logo-kanji{font-family:var(--font-japanese);color:#fff;font-size:22px;font-weight:700}.logo-text h1{letter-spacing:-.5px;align-items:center;gap:8px;font-size:20px;font-weight:800;display:flex}.highlight-tag{color:var(--primary-pink);background:#ff477e33;border:1px solid #ff477e4d;border-radius:20px;padding:2px 8px;font-size:11px;font-weight:700}.logo-subtitle{color:var(--text-muted);font-size:12px}.header-stats{align-items:center;gap:10px;display:flex}.stat-pill{border:1px solid var(--card-border);cursor:default;background:#ffffff0d;border-radius:20px;align-items:center;gap:6px;padding:8px 14px;font-size:14px;font-weight:700;transition:all .2s;display:flex}button.stat-pill{cursor:pointer}button.stat-pill:hover{background:#ffffff1a;transform:translateY(-1px)}.flame-icon{color:#888}.flame-active{color:#f70;animation:1.2s ease-in-out infinite pulse-flame}@keyframes pulse-flame{0%,to{filter:drop-shadow(0 0 4px #f70);transform:scale(1)}50%{filter:drop-shadow(0 0 10px #f30);transform:scale(1.2)}}.xp-icon{color:gold}.accuracy-icon{color:var(--accent-cyan)}.stat-value{color:#fff}.stat-label{color:var(--text-muted);font-size:11px;font-weight:500}.icon-btn{border:1px solid var(--card-border);color:var(--text-muted);cursor:pointer;background:#ffffff0d;border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;transition:all .2s;display:flex}.icon-btn.active,.icon-btn:hover{color:#fff;background:#ffffff26;border-color:#ffffff4d}.navbar-controls{flex-direction:column;gap:12px;display:flex}.nav-tabs{border-radius:var(--radius-md);background:#0000004d;grid-template-columns:repeat(4,1fr);gap:8px;padding:6px;display:grid}.tab-btn{border-radius:var(--radius-sm);color:var(--text-muted);cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;gap:8px;padding:10px 12px;font-size:13px;font-weight:600;transition:all .2s;display:flex}.tab-btn.active{background:linear-gradient(135deg, var(--primary-pink), var(--accent-purple));color:#fff;box-shadow:0 4px 15px var(--primary-pink-glow)}.tab-btn:hover:not(.active){color:#fff;background:#ffffff0d}.script-selector{justify-content:center;gap:8px;display:flex}.script-btn{border:1px solid var(--card-border);color:var(--text-muted);cursor:pointer;background:#ffffff0d;border-radius:20px;padding:6px 16px;font-size:12px;font-weight:600;transition:all .2s}.script-btn.active{border-color:var(--accent-cyan);color:var(--accent-cyan);background:#00f2fe26}.quiz-wrapper{flex-direction:column;align-items:center;gap:16px;width:100%;display:flex}.category-bar{-webkit-overflow-scrolling:touch;scroll-behavior:smooth;scrollbar-width:none;flex-wrap:nowrap;gap:6px;width:100%;padding:4px 0;display:flex;overflow-x:auto}.category-bar::-webkit-scrollbar{display:none}.category-pill{white-space:nowrap;border:1px solid var(--card-border);color:var(--text-muted);cursor:pointer;background:#ffffff0a;border-radius:16px;flex-shrink:0;padding:8px 14px;font-size:13px;font-weight:500;transition:all .2s}.category-pill.active{color:var(--text-dark);background:#fff;font-weight:700}.quiz-card{width:100%;max-width:480px;-webkit-backdrop-filter:var(--card-backdrop);border:1px solid var(--card-border);border-radius:var(--radius-xl);background:#171929d9;flex-direction:column;align-items:center;padding:28px 24px;transition:all .3s cubic-bezier(.175,.885,.32,1.275);display:flex;position:relative;box-shadow:0 20px 40px #0006}.quiz-card.correct{border-color:var(--success-color);animation:.5s bounce-correct;box-shadow:0 0 30px #10b9814d}.quiz-card.wrong{border-color:var(--danger-color);animation:.4s shake-wrong;box-shadow:0 0 30px #ef44444d}@keyframes bounce-correct{0%{transform:scale(1)}50%{transform:scale(1.03)}to{transform:scale(1)}}@keyframes shake-wrong{0%,to{transform:translate(0)}20%,60%{transform:translate(-8px)}40%,80%{transform:translate(8px)}}.card-header{justify-content:space-between;align-items:center;width:100%;margin-bottom:20px;display:flex}.script-badge{text-transform:uppercase;border-radius:20px;padding:4px 12px;font-size:12px;font-weight:700}.script-badge.hiragana{color:var(--primary-pink);background:#ff477e26;border:1px solid #ff477e4d}.script-badge.katakana{color:var(--accent-cyan);background:#00f2fe26;border:1px solid #00f2fe4d}.row-badge{color:var(--text-muted);background:#ffffff0d;border-radius:12px;padding:4px 10px;font-size:12px;font-weight:600}.audio-btn{border:1px solid var(--card-border);color:#fff;cursor:pointer;background:#ffffff14;border-radius:50%;justify-content:center;align-items:center;width:38px;height:38px;transition:all .2s;display:flex}.audio-btn:hover{background:#fff3;transform:scale(1.1)}.character-display{background:linear-gradient(135deg,#ffffff0f,#ffffff05);border:1px solid #ffffff26;border-radius:24px;justify-content:center;align-items:center;width:160px;height:160px;margin-bottom:24px;display:flex;box-shadow:inset 0 0 20px #0003}.kana-text{font-family:var(--font-japanese);color:#fff;text-shadow:0 0 20px #fff6;white-space:nowrap;font-size:80px;font-weight:700}.kana-text.is-yoon{letter-spacing:-2px;font-size:54px}.feedback-badge{border-radius:var(--radius-md);justify-content:center;align-items:center;gap:8px;width:100%;margin-bottom:16px;padding:10px 16px;font-size:14px;font-weight:600;display:flex}.feedback-badge.correct{background:var(--success-bg);color:var(--success-color);border:1px solid var(--success-color)}.feedback-badge.wrong{background:var(--danger-bg);color:var(--danger-color);border:1px solid var(--danger-color)}.romaji-form{flex-direction:column;gap:16px;width:100%;display:flex}.input-field-group{gap:10px;width:100%;display:flex}.romaji-input{border:2px solid var(--card-border);border-radius:var(--radius-md);color:#fff;text-align:center;letter-spacing:1px;background:#0006;outline:none;flex:1;padding:14px 18px;font-size:20px;font-weight:700;transition:all .2s}.romaji-input:focus{border-color:var(--accent-cyan);box-shadow:0 0 15px var(--accent-cyan-glow)}.submit-btn{background:linear-gradient(135deg, var(--accent-cyan), #0072ff);color:#fff;border-radius:var(--radius-md);cursor:pointer;border:none;justify-content:center;align-items:center;width:54px;transition:all .2s;display:flex}.submit-btn:hover:not(:disabled){box-shadow:0 6px 20px var(--accent-cyan-glow);transform:translateY(-2px)}.submit-btn:disabled{opacity:.5;cursor:not-allowed}.card-footer-actions{justify-content:space-between;width:100%;margin-top:8px;display:flex}.action-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:8px;align-items:center;gap:6px;padding:6px 10px;font-size:12px;font-weight:600;transition:all .2s;display:flex}.action-btn:hover{color:#fff;background:#ffffff0d}.choice-prompt{color:var(--text-muted);margin-bottom:16px;font-size:14px}.options-grid{grid-template-columns:1fr 1fr;gap:12px;width:100%;margin-bottom:20px;display:grid}.option-btn{border:1.5px solid var(--card-border);border-radius:var(--radius-md);cursor:pointer;background:#ffffff0d;align-items:center;gap:12px;padding:16px;transition:all .2s;display:flex}.option-btn:hover:not(:disabled){background:#ffffff1f;border-color:#ffffff4d;transform:translateY(-2px)}.option-letter{width:28px;height:28px;color:var(--text-muted);background:#ffffff1a;border-radius:50%;justify-content:center;align-items:center;font-size:12px;font-weight:700;display:flex}.option-text{color:#fff;font-size:18px;font-weight:700}.option-btn.correct-opt{background:var(--success-bg)!important;border-color:var(--success-color)!important;color:var(--success-color)!important}.option-btn.correct-opt .option-letter{background:var(--success-color);color:#fff}.option-btn.wrong-opt{background:var(--danger-bg)!important;border-color:var(--danger-color)!important;color:var(--danger-color)!important}.option-btn.wrong-opt .option-letter{background:var(--danger-color);color:#fff}.speed-challenge-container{flex-direction:column;align-items:center;width:100%;display:flex}.speed-intro-card,.speed-summary-card{border:1px solid var(--card-border);border-radius:var(--radius-xl);text-align:center;background:#171929d9;flex-direction:column;align-items:center;width:100%;max-width:480px;padding:32px 24px;display:flex;box-shadow:0 20px 40px #0006}.intro-badge{background:linear-gradient(135deg,#f90,#f05);border-radius:50%;justify-content:center;align-items:center;width:64px;height:64px;margin-bottom:16px;display:flex;box-shadow:0 0 25px #f906}.intro-desc{color:var(--text-muted);margin:12px 0 24px;font-size:14px;line-height:1.5}.highscore-box{background:#ffd7001a;border:1px solid #ffd7004d;border-radius:20px;align-items:center;gap:8px;margin-bottom:24px;padding:10px 20px;font-size:14px;display:flex}.trophy-gold{color:gold}.start-game-btn{background:linear-gradient(135deg, var(--primary-pink), var(--accent-purple));color:#fff;cursor:pointer;box-shadow:0 10px 25px var(--primary-pink-glow);border:none;border-radius:30px;align-items:center;gap:10px;padding:14px 32px;font-size:16px;font-weight:700;transition:all .2s;display:flex}.start-game-btn:hover{box-shadow:0 14px 30px var(--primary-pink-glow);transform:translateY(-2px)}.speed-play-wrapper{flex-direction:column;align-items:center;gap:16px;width:100%;display:flex}.speed-hud{border:1px solid var(--card-border);border-radius:var(--radius-lg);background:#ffffff0d;justify-content:space-between;align-items:center;width:100%;max-width:480px;padding:12px 20px;display:flex}.timer-ring{border:3px solid var(--accent-cyan);border-radius:50%;justify-content:center;align-items:center;width:50px;height:50px;font-size:15px;font-weight:800;display:flex}.timer-ring.timer-warning{border-color:var(--danger-color);color:var(--danger-color);animation:.6s infinite alternate pulse-ring}@keyframes pulse-ring{0%{transform:scale(1)}to{transform:scale(1.1)}}.score-multiplier-badge{flex-direction:column;align-items:center;display:flex}.mult-text{color:#f90;font-size:20px;font-weight:900}.mult-label{color:var(--text-muted);text-transform:uppercase;font-size:10px}.live-score{flex-direction:column;align-items:flex-end;display:flex}.score-val{color:var(--accent-cyan);font-size:20px;font-weight:800}.score-lbl{color:var(--text-muted);font-size:10px}.summary-stats-grid{grid-template-columns:1fr 1fr;gap:12px;width:100%;margin:20px 0 24px;display:grid}.sum-stat-item{border:1px solid var(--card-border);border-radius:var(--radius-md);background:#ffffff0a;flex-direction:column;align-items:center;padding:14px;display:flex}.sum-val{color:#fff;font-size:22px;font-weight:800}.sum-lbl{color:var(--text-muted);font-size:12px}.kana-chart-container{flex-direction:column;gap:20px;width:100%;display:flex}.chart-controls{border:1px solid var(--card-border);border-radius:var(--radius-lg);background:#171929b3;flex-direction:column;gap:12px;padding:16px;display:flex}.script-tab-toggle{grid-template-columns:1fr 1fr;gap:8px;display:grid}.script-tab{color:var(--text-muted);border-radius:var(--radius-md);cursor:pointer;background:#ffffff0d;border:none;padding:12px;font-size:14px;font-weight:700;transition:all .2s}.script-tab.active{background:linear-gradient(135deg, var(--accent-cyan), #0072ff);color:#fff}.category-sub-tabs{-webkit-overflow-scrolling:touch;scroll-behavior:smooth;scrollbar-width:none;flex-wrap:nowrap;gap:6px;width:100%;padding:4px 0;display:flex;overflow-x:auto}.category-sub-tabs::-webkit-scrollbar{display:none}.sub-tab{white-space:nowrap;border:1px solid var(--card-border);color:var(--text-muted);cursor:pointer;background:0 0;border-radius:14px;flex-shrink:0;padding:8px 14px;font-size:13px;font-weight:600}.sub-tab.active{color:var(--text-dark);background:#fff}.chart-search-bar{border:1px solid var(--card-border);border-radius:var(--radius-md);background:#0000004d;align-items:center;gap:10px;padding:8px 14px;display:flex}.search-icon{color:var(--text-muted)}.chart-search-input{color:#fff;background:0 0;border:none;outline:none;flex:1;font-size:14px}.kana-grid-layout{flex-direction:column;gap:20px;display:flex}.row-section{border:1px solid var(--card-border);border-radius:var(--radius-lg);background:#17192999;padding:16px}.row-title{color:var(--accent-cyan);text-transform:uppercase;letter-spacing:1px;margin-bottom:12px;font-size:14px;font-weight:700}.yoon-columns-header{border-radius:var(--radius-md);background:#00f2fe14;border:1px dashed #00f2fe4d;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:4px;padding:12px;display:grid}.yoon-col-title{text-align:center;color:var(--accent-cyan);letter-spacing:1px;font-size:13px;font-weight:800}.row-cards-grid{grid-template-columns:repeat(auto-fill,minmax(75px,1fr));gap:10px;display:grid}.row-cards-grid.yoon-grid{grid-template-columns:repeat(3,1fr);gap:12px}.chart-kana-card{border:1px solid var(--card-border);border-radius:var(--radius-md);cursor:pointer;background:#ffffff0a;flex-direction:column;align-items:center;padding:12px 6px;transition:all .2s;display:flex;position:relative}.chart-kana-card.is-yoon{padding:14px 8px}.chart-kana-card:hover{border-color:var(--accent-cyan);background:#ffffff1f;transform:translateY(-3px);box-shadow:0 6px 15px #00f2fe33}.chart-char{font-family:var(--font-japanese);color:#fff;font-size:28px;font-weight:700}.chart-char.is-yoon-char{white-space:nowrap;letter-spacing:-1px;font-size:26px}.choon-columns-header{border-radius:var(--radius-md);background:#a855f714;border:1px dashed #a855f74d;grid-template-columns:repeat(5,1fr);gap:10px;margin-bottom:4px;padding:12px;display:grid}.choon-col-title{text-align:center;color:#a855f7;letter-spacing:1px;font-size:13px;font-weight:800}.row-cards-grid.choon-grid{grid-template-columns:repeat(5,1fr);gap:12px}.chart-kana-card.is-choon{padding:14px 8px}.chart-char.is-choon-char{white-space:nowrap;letter-spacing:-1px;font-size:24px}.chart-romaji{color:var(--text-muted);margin-top:4px;font-size:12px;font-weight:600}.audio-indicator{opacity:.4;position:absolute;top:4px;right:4px}.modal-backdrop{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:1000;background:#000000bf;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.modal-content{border:1px solid var(--card-border);border-radius:var(--radius-xl);background:#171929;width:100%;max-width:480px;padding:24px;box-shadow:0 25px 50px #0009}.modal-header{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.modal-title-group{align-items:center;gap:10px;display:flex}.modal-icon{color:gold}.close-modal-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none}.stats-grid{grid-template-columns:1fr 1fr;gap:12px;margin-bottom:20px;display:grid}.stat-card{border:1px solid var(--card-border);border-radius:var(--radius-md);background:#ffffff0a;flex-direction:column;align-items:center;padding:16px;display:flex}.stat-card-val{font-size:26px;font-weight:800}.stat-card-val.primary{color:var(--primary-pink)}.stat-card-val.success{color:var(--success-color)}.stat-card-val.warning{color:#f90}.stat-card-val.info{color:var(--accent-cyan)}.stat-card-lbl{color:var(--text-muted);margin-top:4px;font-size:12px}.stats-detail-list{border-radius:var(--radius-md);background:#0003;flex-direction:column;gap:10px;padding:12px 16px;display:flex}.detail-item{justify-content:space-between;font-size:14px;display:flex}.modal-footer{justify-content:space-between;margin-top:24px;display:flex}.reset-stats-btn{border:1px solid var(--card-border);color:var(--danger-color);border-radius:var(--radius-md);cursor:pointer;background:0 0;align-items:center;gap:6px;padding:10px 16px;font-size:13px;font-weight:600;display:flex}.primary-modal-btn{color:var(--text-dark);border-radius:var(--radius-md);cursor:pointer;background:#fff;border:none;padding:10px 24px;font-weight:700}.streak-toast-banner{z-index:999;animation:.4s cubic-bezier(.175,.885,.32,1.275) slide-up;position:fixed;bottom:24px;left:50%;transform:translate(-50%)}@keyframes slide-up{0%{opacity:0;transform:translate(-50%,100px)}to{opacity:1;transform:translate(-50%)}}.toast-content{color:#fff;background:linear-gradient(135deg,#ff477e,#f90);border-radius:30px;align-items:center;gap:10px;padding:14px 24px;font-size:15px;font-weight:800;display:flex;box-shadow:0 10px 30px #ff477e80}@media (width<=640px){.app-container{padding:10px 8px}.navbar-container{border-radius:var(--radius-lg);margin-bottom:16px;padding:14px 12px}.navbar-top{flex-direction:column;align-items:stretch;gap:12px}.brand-logo{justify-content:flex-start}.logo-text h1{font-size:18px}.logo-subtitle{font-size:11px}.header-stats{justify-content:space-between;gap:6px;width:100%;display:flex}.stat-pill{border-radius:14px;flex:1;justify-content:center;padding:6px 8px;font-size:12px}.stat-label{display:none}.nav-tabs{grid-template-columns:repeat(2,1fr);gap:6px;padding:4px}.tab-btn{justify-content:center;gap:6px;padding:10px 8px;font-size:12px}.script-selector{gap:4px;width:100%;display:flex}.script-btn{text-align:center;border-radius:12px;flex:1;padding:8px 4px;font-size:11px}.quiz-card{border-radius:var(--radius-lg);padding:20px 16px}.card-header{margin-bottom:14px}.character-display{border-radius:18px;width:120px;height:120px;margin-bottom:18px}.kana-text{font-size:58px}.kana-text.is-yoon{font-size:40px}.romaji-input{padding:12px 14px;font-size:18px}.options-grid{grid-template-columns:1fr 1fr;gap:8px}.option-btn{padding:12px 8px;font-size:15px}.chart-controls{gap:10px;padding:12px}.script-tab{padding:10px 6px;font-size:13px}.row-section{border-radius:var(--radius-md);padding:12px 8px}.row-title{margin-bottom:8px;font-size:12px}.row-cards-grid{grid-template-columns:repeat(5,1fr);gap:6px}.row-cards-grid.yoon-grid{grid-template-columns:repeat(3,1fr);gap:6px}.row-cards-grid.choon-grid{grid-template-columns:repeat(5,1fr);gap:5px}.yoon-columns-header{gap:6px;padding:8px 4px}.yoon-col-title{font-size:11px}.choon-columns-header{gap:5px;padding:8px 4px}.choon-col-title{letter-spacing:0;font-size:11px}.chart-kana-card{border-radius:8px;padding:8px 2px}.chart-kana-card.is-yoon,.chart-kana-card.is-choon{padding:8px 2px}.chart-char{font-size:22px}.chart-char.is-yoon-char{font-size:18px}.chart-char.is-choon-char{font-size:17px}.chart-romaji{margin-top:2px;font-size:10px}.audio-indicator{display:none}.speed-play-wrapper{width:100%}.speed-hud{gap:8px;padding:10px 12px}.timer-ring{width:48px;height:48px}.time-val{font-size:14px}.score-val{font-size:20px}}@media (width<=380px){.logo-text h1{font-size:16px}.tab-btn{padding:8px 4px;font-size:11px}.chart-char{font-size:18px}.chart-char.is-yoon-char{font-size:15px}.chart-char.is-choon-char{font-size:14px}.chart-romaji{font-size:9px}.character-display{width:100px;height:100px}.kana-text{font-size:48px}}