@import "https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700;900&family=Outfit:wght@400;500;600;700;800&family=Zen+Kaku+Gothic+New:wght@500;700;900&display=swap";:root{--bg-primary:#0a0d14;--bg-secondary:#121722;--bg-card:#161d2cbf;--bg-card-hover:#1c2538d9;--bg-elevated:#1e2638;--border-subtle:#ffffff14;--border-glow:#7c3aed59;--text-primary:#f8fafc;--text-secondary:#94a3b8;--text-muted:#64748b;--accent-pink:#ec4899;--accent-purple:#8b5cf6;--accent-cyan:#06b6d4;--accent-green:#10b981;--accent-green-glow:#10b9814d;--accent-red:#f43f5e;--accent-red-glow:#f43f5e4d;--accent-gold:#f59e0b;--radius-sm:8px;--radius-md:14px;--radius-lg:20px;--radius-xl:28px;--radius-full:9999px;--shadow-sm:0 2px 8px #0003;--shadow-md:0 8px 24px #00000059;--shadow-lg:0 20px 48px -10px #00000080;--shadow-card:0 25px 50px -12px #00000080, 0 0 24px #8b5cf626;--font-en:"Outfit", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-jp:"Zen Kaku Gothic New", "Noto Sans JP", sans-serif;--transition-fast:.15s cubic-bezier(.4, 0, .2, 1);--transition-normal:.28s cubic-bezier(.4, 0, .2, 1);--transition-bounce:.45s cubic-bezier(.34, 1.56, .64, 1)}[data-theme=light]{--bg-primary:#f8fafc;--bg-secondary:#f1f5f9;--bg-card:#ffffffe0;--bg-card-hover:#fffffffa;--bg-elevated:#fff;--border-subtle:#00000014;--border-glow:#6366f140;--text-primary:#0f172a;--text-secondary:#475569;--text-muted:#94a3b8;--accent-pink:#db2777;--accent-purple:#7c3aed;--accent-green:#059669;--accent-green-glow:#05966940;--accent-red:#e11d48;--accent-red-glow:#e11d4840;--shadow-card:0 20px 40px -12px #00000014, 0 0 20px #7c3aed1a}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-en);background-color:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;background-image:radial-gradient(circle at 15% 15%,#8b5cf61f 0%,#0000 40%),radial-gradient(circle at 85% 85%,#ec48991a 0%,#0000 40%),radial-gradient(circle,#06b6d40d 0%,#0000 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.icon{font-size:.95rem}.stat-pill.mastered{color:var(--accent-green);border-color:#10b98140}.stat-pill.remaining{color:var(--accent-purple);border-color:#8b5cf640}.stat-pill.streak{color:var(--accent-gold);border-color:#f59e0b40}.stat-pill.accuracy{color:var(--accent-cyan);border-color:#06b6d440}.progress-container{margin-bottom:2rem}.progress-header{color:var(--text-secondary);justify-content:space-between;align-items:center;margin-bottom:.45rem;font-size:.85rem;display:flex}.progress-header span strong{color:var(--text-primary)}.progress-track{background:var(--bg-elevated);border-radius:var(--radius-full);border:1px solid var(--border-subtle);width:100%;height:10px;position:relative;overflow:hidden}.progress-fill{background:linear-gradient(90deg, var(--accent-purple), var(--accent-green));border-radius:var(--radius-full);width:0%;height:100%;transition:width .4s cubic-bezier(.4,0,.2,1);box-shadow:0 0 12px 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var(--accent-green-glow);color:#fff;background:linear-gradient(135deg,#10b9814d,#10b9812e);transform:translateY(-2px)}.btn-decision:active{transform:translateY(0)}.keyboard-bar{color:var(--text-muted);justify-content:center;align-items:center;gap:1.5rem;margin-top:1.5rem;font-size:.8rem;display:flex}.kb-item{align-items:center;gap:.35rem;display:flex}kbd{background:var(--bg-card);border:1px solid var(--border-subtle);border-bottom:2px solid var(--border-subtle);color:var(--text-primary);border-radius:4px;padding:.15rem .45rem;font-family:inherit;font-size:.725rem;font-weight:700}.victory-card{background:var(--bg-card);border-radius:var(--radius-xl);text-align:center;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border:1px solid #10b9814d;flex-direction:column;align-items:center;width:100%;max-width:540px;padding:3rem 2rem;animation:.5s cubic-bezier(.34,1.56,.64,1) popIn;display:flex;box-shadow:0 25px 60px -15px #10b98140}.victory-badge-icon{color:#fff;background:linear-gradient(135deg,#10b981,#059669);border-radius:50%;justify-content:center;align-items:center;width:80px;height:80px;margin-bottom:1.25rem;font-size:2.5rem;display:flex;box-shadow:0 10px 25px #10b98166}.victory-title{background:linear-gradient(135deg,#fff,#a7f3d0);-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-bottom:.5rem;font-size:2rem;font-weight:800}[data-theme=light] .victory-title{background:linear-gradient(135deg,#065f46,#059669);-webkit-text-fill-color:transparent;-webkit-background-clip:text}.victory-subtitle{color:var(--text-secondary);max-width:400px;margin-bottom:2rem;font-size:1rem}.victory-stats-grid{grid-template-columns:repeat(3,1fr);gap:1rem;width:100%;margin-bottom:2.25rem;display:grid}.v-stat-box{background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:1rem .5rem}.v-stat-val{color:var(--text-primary);margin-bottom:.2rem;font-size:1.5rem;font-weight:800}.v-stat-label{color:var(--text-muted);text-transform:uppercase;font-size:.75rem;font-weight:600}.victory-actions{flex-direction:column;gap:.75rem;width:100%;max-width:320px;display:flex}.btn-primary-action{background:linear-gradient(135deg, var(--accent-green), #059669);color:#fff;font-family:var(--font-en);border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-fast);border:none;padding:.9rem;font-size:1.05rem;font-weight:700;box-shadow:0 8px 20px #10b9814d}.btn-primary-action:hover{transform:translateY(-2px);box-shadow:0 12px 24px #10b98166}.btn-secondary-action{background:var(--bg-elevated);color:var(--text-secondary);border:1px solid var(--border-subtle);font-family:var(--font-en);border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-fast);padding:.8rem;font-size:.95rem;font-weight:600}.btn-secondary-action:hover{background:var(--bg-card-hover);color:var(--text-primary);border-color:var(--border-glow)}.modal-overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:100;opacity:0;pointer-events:none;background:#000000bf;justify-content:center;align-items:center;padding:1.5rem;transition:opacity .25s;display:flex;position:fixed;inset:0}.modal-overlay.open{opacity:1;pointer-events:auto}.modal-card{background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:var(--radius-xl);width:100%;max-width:820px;max-height:85vh;box-shadow:var(--shadow-lg);flex-direction:column;transition:transform .25s cubic-bezier(.34,1.56,.64,1);display:flex;overflow:hidden;transform:translateY(20px)scale(.97)}.modal-overlay.open .modal-card{transform:translateY(0)scale(1)}.modal-header{border-bottom:1px solid var(--border-subtle);background:var(--bg-card);justify-content:space-between;align-items:center;padding:1.25rem 1.75rem;display:flex}.modal-header h2{align-items:center;gap:.5rem;font-size:1.25rem;font-weight:700;display:flex}.modal-close-btn{color:var(--text-secondary);cursor:pointer;border-radius:var(--radius-sm);background:0 0;border:none;justify-content:center;align-items:center;padding:.4rem;display:flex}.modal-close-btn:hover{color:var(--text-primary);background:var(--bg-elevated)}.modal-body{flex:1;padding:1.5rem;overflow-y:auto}.chart-section-title{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;margin:1rem 0 .75rem;font-size:.9rem;font-weight:700}.chart-section-title:first-child{margin-top:0}.chart-grid{grid-template-columns:repeat(auto-fill,minmax(68px,1fr));gap:.6rem;display:grid}.chart-tile{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);flex-direction:column;align-items:center;padding:.5rem .25rem;display:flex;position:relative}.chart-tile:hover{border-color:var(--accent-purple);background:var(--bg-card-hover);transform:translateY(-2px)}.chart-tile .tile-kana{font-family:var(--font-jp);color:var(--text-primary);font-size:1.5rem;font-weight:700;line-height:1.2}.chart-tile .tile-romaji{color:var(--text-secondary);font-size:.75rem;font-weight:600}.chart-tile.mastered{background:#10b98114;border-color:#10b98166}.chart-tile.mastered .tile-romaji{color:var(--accent-green)}.chart-tile.mastered:after{content:"✓";color:var(--accent-green);font-size:.65rem;font-weight:900;position:absolute;top:2px;right:4px}.tile-record{gap:.35rem;margin-top:.2rem;font-size:.65rem;font-weight:700;display:flex}.tile-rec-right{color:var(--accent-green)}.tile-rec-wrong{color:#ff6482}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@keyframes 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.4rem;font-size:.65rem;font-weight:800}.customs-setup-view{flex-direction:column;gap:1.5rem;padding-bottom:5.5rem;display:flex}.setup-intro-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);padding:1.5rem}.setup-intro-text h2{letter-spacing:-.02em;margin-bottom:.4rem;font-size:1.35rem;font-weight:800}.setup-intro-text p{color:var(--text-secondary);margin-bottom:1.25rem;font-size:.9rem;line-height:1.5}.quick-filter-bar{flex-wrap:wrap;align-items:center;gap:.5rem;margin-bottom:1rem;display:flex}.quick-filter-group{flex-wrap:wrap;gap:.5rem;display:flex}.btn-filter-action{background:var(--bg-elevated);border:1px solid var(--border-subtle);color:var(--text-secondary);font-family:var(--font-en);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);padding:.4rem .85rem;font-size:.8rem;font-weight:600}.btn-filter-action:hover{background:var(--bg-card-hover);color:var(--text-primary);border-color:var(--accent-purple)}.row-filter-pills{flex-wrap:wrap;gap:.4rem;display:flex}.row-filter-btn{background:var(--bg-card);border:1px solid var(--border-subtle);color:var(--text-muted);font-family:var(--font-en);border-radius:var(--radius-full);cursor:pointer;transition:all var(--transition-fast);align-items:center;gap:.35rem;padding:.25rem .6rem;font-size:.75rem;font-weight:600;display:inline-flex}.row-filter-btn .row-count-tag{opacity:.75;font-size:.65rem}.row-filter-btn:hover{color:var(--text-primary);border-color:var(--border-glow)}.row-filter-btn.active{border-color:var(--accent-purple);color:var(--accent-purple);background:#8b5cf626;font-weight:700}.selection-grid-container{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);padding:1.5rem}.selection-grid-header{justify-content:space-between;align-items:center;margin-bottom:1.25rem;display:flex}.selection-grid-header h3{font-size:1.1rem;font-weight:700}.selection-hint{color:var(--text-muted);font-size:.8rem}.selection-grid{grid-template-columns:repeat(auto-fill,minmax(78px,1fr));gap:.65rem;display:grid}.custom-tile{background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);-webkit-user-select:none;user-select:none;flex-direction:column;align-items:center;padding:.65rem .35rem;display:flex;position:relative}.custom-tile:hover{border-color:var(--border-glow);background:var(--bg-card-hover);transform:translateY(-2px)}.custom-tile-kana{font-family:var(--font-jp);color:var(--text-primary);font-size:1.75rem;font-weight:700;line-height:1.15}.custom-tile-romaji{color:var(--text-secondary);margin-top:.15rem;font-size:.75rem;font-weight:600}.tile-check-indicator{border:1.5px solid var(--border-subtle);width:14px;height:14px;transition:all var(--transition-fast);border-radius:50%;position:absolute;top:5px;right:5px}.custom-tile.selected{border-color:var(--accent-purple);background:#8b5cf61f;box-shadow:0 0 12px #8b5cf633}.custom-tile.selected .tile-check-indicator{background:var(--accent-purple);border-color:var(--accent-purple)}.custom-tile.selected .tile-check-indicator:after{content:"✓";color:#fff;font-size:.6rem;font-weight:900;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.sticky-launch-bar{background:var(--bg-card);border:1px solid var(--border-glow);border-radius:var(--radius-xl);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);z-index:50;justify-content:space-between;align-items:center;gap:1.25rem;width:calc(100% - 2.5rem);max-width:860px;padding:.85rem 1.5rem;display:flex;position:fixed;bottom:1.25rem;left:50%;transform:translate(-50%);box-shadow:0 20px 40px #00000073,0 0 20px #8b5cf633}.launch-info{align-items:center;gap:.5rem;display:flex}.launch-count-label{color:var(--text-secondary);font-size:.85rem;font-weight:600}.launch-count-number{color:var(--accent-green);font-size:1.15rem;font-weight:800}.launch-options{align-items:center;gap:.6rem;display:flex}.launch-options label{color:var(--text-secondary);font-size:.85rem;font-weight:600}.btn-start-quiz{background:linear-gradient(135deg, var(--accent-pink), var(--accent-purple));color:#fff;font-family:var(--font-en);border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap;border:none;padding:.75rem 1.5rem;font-size:1rem;font-weight:700;box-shadow:0 4px 16px #ec489959}.btn-start-quiz:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px #ec489973}.btn-start-quiz:disabled{opacity:.5;cursor:not-allowed;box-shadow:none}.customs-quiz-view{width:100%}.quiz-top-controls{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;margin-bottom:1.25rem;display:flex}.btn-exit-quiz{background:var(--bg-card);border:1px solid var(--border-subtle);color:var(--text-secondary);font-family:var(--font-en);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);align-items:center;gap:.4rem;padding:.45rem .85rem;font-size:.825rem;font-weight:600;display:inline-flex}.btn-exit-quiz:hover{background:var(--bg-card-hover);color:var(--text-primary);border-color:var(--border-glow)}.quiz-card-stage{justify-content:center;margin-top:1rem;display:flex}.custom-quiz-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-xl);text-align:center;width:100%;max-width:560px;box-shadow:var(--shadow-card);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);flex-direction:column;align-items:center;padding:2.25rem 2rem;display:flex;position:relative;overflow:hidden}.custom-quiz-card:before{content:"";background:linear-gradient(90deg, var(--accent-pink), var(--accent-purple), var(--accent-cyan));height:4px;position:absolute;top:0;left:0;right:0}.quiz-question-header{flex-direction:column;align-items:center;width:100%;margin-bottom:1.5rem;display:flex}.quiz-instruction{color:var(--text-secondary);margin-bottom:.75rem;font-size:.9rem;font-weight:500}.quiz-character-wrap{align-items:center;gap:.75rem;margin-bottom:.5rem;display:flex}.quiz-character-display{font-family:var(--font-jp);color:var(--text-primary);font-size:5rem;font-weight:700;line-height:1.1}.quiz-options-grid{grid-template-columns:1fr 1fr;gap:.85rem;width:100%;margin-bottom:1rem;display:grid}.quiz-option-btn{background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);color:var(--text-primary);font-family:var(--font-en);cursor:pointer;transition:all var(--transition-fast);justify-content:center;align-items:center;gap:.75rem;padding:1.1rem 1rem;font-size:1.25rem;font-weight:700;display:flex;position:relative}.quiz-option-btn:hover:not(:disabled){background:var(--bg-card-hover);border-color:var(--accent-purple);transform:translateY(-2px);box-shadow:0 6px 16px #8b5cf640}.option-key-badge{color:var(--text-muted);background:#ffffff1a;border-radius:4px;padding:.15rem .45rem;font-size:.75rem}.quiz-option-btn.selected-correct{border-color:var(--accent-green)!important;color:#34d399!important;background:#10b98133!important;box-shadow:0 0 20px #10b98166!important}.quiz-option-btn.selected-incorrect{border-color:var(--accent-red)!important;color:#ff6482!important;background:#f43f5e33!important;box-shadow:0 0 20px #f43f5e66!important}.quiz-option-btn.correct-reveal{border-color:var(--accent-green)!important;color:#34d399!important}.handwriting-drawer{background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:var(--radius-md);width:100%;max-width:320px;margin-bottom:1.25rem;padding:.65rem}.canvas-header{color:var(--text-muted);justify-content:space-between;align-items:center;margin-bottom:.45rem;font-size:.75rem;font-weight:600;display:flex}.canvas-controls{gap:.4rem;display:flex}.btn-canvas-tool{background:var(--bg-card);border:1px solid var(--border-subtle);color:var(--text-secondary);cursor:pointer;border-radius:4px;padding:.15rem .45rem;font-size:.7rem;font-weight:600}.btn-canvas-tool:hover{color:var(--text-primary);border-color:var(--border-glow)}.canvas-wrapper{border-radius:var(--radius-sm);border:1px dashed var(--border-subtle);cursor:crosshair;background:#0003;width:100%;height:160px;position:relative;overflow:hidden}#writeCanvas{z-index:2;touch-action:none;width:100%;height:100%;position:absolute;inset:0}.canvas-guide-overlay{font-family:var(--font-jp);color:var(--text-primary);opacity:0;pointer-events:none;z-index:1;justify-content:center;align-items:center;font-size:5rem;font-weight:700;transition:opacity .2s;display:flex;position:absolute;inset:0}.write-input-form{gap:.6rem;width:100%;max-width:360px;margin-bottom:.75rem;display:flex}.write-text-input{background:var(--bg-elevated);border:2px solid var(--border-subtle);color:var(--text-primary);font-family:var(--font-en);border-radius:var(--radius-lg);text-align:center;transition:all var(--transition-fast);outline:none;flex:1;padding:.8rem 1.1rem;font-size:1.15rem;font-weight:700}.write-text-input:focus{border-color:var(--accent-purple);box-shadow:0 0 0 3px #8b5cf640}.write-text-input.input-correct{border-color:var(--accent-green)!important;color:#34d399!important;background:#10b9811f!important}.write-text-input.input-incorrect{border-color:var(--accent-red)!important;color:#ff6482!important;background:#f43f5e1f!important}.btn-submit-write{background:linear-gradient(135deg, var(--accent-purple), #6366f1);color:#fff;font-family:var(--font-en);border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-fast);border:none;flex-direction:column;justify-content:center;align-items:center;gap:.2rem;padding:.8rem 1.25rem;font-size:.95rem;font-weight:700;display:flex}.btn-submit-write:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 14px #7c3aed59}.quiz-feedback-box{border-radius:var(--radius-md);width:100%;margin-top:.75rem;padding:.75rem 1rem;font-size:.9rem;font-weight:600;animation:.2s ease-out fadeIn}.feedback-success{color:#34d399;background:#10b98126;border:1px solid #10b98159}.feedback-error{color:#ff6482;background:#f43f5e26;border:1px solid #f43f5e59}.animate-spring{animation:.32s cubic-bezier(.175,.885,.32,1.275) revealSpring}@media (width<=640px){.app-header{flex-direction:column;align-items:flex-start}.header-actions{align-self:flex-end;margin-top:-2.5rem}.deck-controls-bar{flex-direction:column;align-items:stretch}.deck-selector-wrap{justify-content:space-between}.flashcard{padding:1.75rem 1.25rem}.romaji-display{font-size:3.8rem}.kana-display{font-size:4.8rem}.keyboard-bar{display:none}}