:root{--primary:#7f77dd;--primary-light:#eeedfe;--primary-dark:#3c3489;--bg:#f5f5f7;--white:#fff;--correct-bg:#eaf3de;--correct-text:#27500a;--wrong-bg:#fcebeb;--wrong-text:#501313;--shadow:0 2px 12px #0000001a;--radius:14px;--font:-apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", sans-serif;--max-w:480px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px}body{font-family:var(--font);background:var(--bg);color:#1a1a2e;-webkit-tap-highlight-color:transparent;min-height:100dvh}button{cursor:pointer;-webkit-tap-highlight-color:transparent;font-family:var(--font);background:0 0;border:none}input{font-family:var(--font);-webkit-appearance:none}#app{max-width:var(--max-w);background:var(--bg);min-height:100dvh;margin:0 auto;position:relative}.card{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}.auth-screen{justify-content:center;align-items:center;min-height:100dvh;padding:24px;display:flex}.auth-card{background:var(--white);box-shadow:var(--shadow);text-align:center;border-radius:24px;width:100%;max-width:340px;padding:40px 28px}.auth-logo{margin-bottom:8px;font-size:48px}.auth-title{color:var(--primary-dark);font-size:24px;font-weight:800}.auth-subtitle{color:#888;margin-bottom:24px;font-size:14px}.auth-hint{color:#555;margin-bottom:12px;font-size:14px}.auth-input-wrap{margin-bottom:8px}.auth-input{text-align:center;letter-spacing:6px;border:2px solid #ddd;border-radius:12px;outline:none;width:100%;padding:14px 16px;font-size:22px;transition:border-color .2s}.auth-input:focus{border-color:var(--primary)}.auth-error{color:#e44;margin-bottom:8px;font-size:13px}.auth-btn{background:var(--primary);color:#fff;border-radius:12px;width:100%;margin-top:8px;padding:14px;font-size:17px;font-weight:700;transition:opacity .15s}.auth-btn:active{opacity:.8}@keyframes shake{0%,to{transform:translate(0)}20%,60%{transform:translate(-6px)}40%,80%{transform:translate(6px)}}.shake{animation:.4s shake}.app-header{background:var(--white);z-index:10;padding:12px 16px 8px;position:sticky;top:0;box-shadow:0 1px 4px #00000014}.mode-toggle{gap:8px;margin-bottom:6px;display:flex}.mode-btn{color:#888;background:var(--bg);border-radius:10px;flex:1;padding:8px 0;font-size:15px;font-weight:600;transition:all .2s}.mode-btn.mode-active{background:var(--primary-light);color:var(--primary-dark)}.mode-label{color:#888;text-align:center;font-size:12px}.tab-bar{background:var(--white);z-index:9;border-bottom:2px solid #eee;display:flex;position:sticky;top:72px}.tab-btn{color:#aaa;border-bottom:3px solid #0000;flex:1;padding:12px 0;font-size:13px;font-weight:600;transition:all .15s}.tab-btn.tab-active{color:var(--primary);border-bottom-color:var(--primary)}.tab-content{padding:16px 16px 32px}.chips-scroll{margin-bottom:8px}.chips-grid{grid-template-columns:repeat(2,1fr);gap:6px;width:100%;display:grid}.chip{background:var(--white);color:#555;white-space:nowrap;border:1.5px solid #e0e0e0;border-radius:20px;padding:6px 10px;font-size:12px;font-weight:600;transition:all .15s}.chip.chip-active{background:var(--primary-light);color:var(--primary-dark);border-color:var(--primary)}.flashcard{perspective:1000px;cursor:pointer;-webkit-user-select:none;user-select:none;margin:16px 0 8px;position:relative}.flashcard-inner{min-height:220px;transform-style:preserve-3d;transition:transform .45s;position:relative}.flashcard-inner.flipped{transform:rotateY(180deg)}.flashcard-front,.flashcard-back{backface-visibility:hidden;background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);text-align:center;flex-direction:column;justify-content:center;align-items:center;padding:24px 20px;display:flex;position:absolute;inset:0}.flashcard-back{transform:rotateY(180deg)}.card-word{color:var(--primary-dark);font-size:36px;font-weight:800;line-height:1.6}.card-read{color:#888;margin-top:6px;font-size:15px}.card-example{color:#aaa;margin-top:10px;font-size:13px;font-style:italic}.card-example-ja{color:#888;margin-top:10px;font-size:14px;font-style:normal;line-height:1.6}.card-example-read{color:#bbb;letter-spacing:.5px;margin-top:2px;font-size:11px;font-style:italic}.card-tap-hint{color:#ccc;margin-top:12px;font-size:11px}.custom-badge{background:var(--primary);color:#fff;z-index:2;pointer-events:none;border-radius:20px;padding:3px 8px;font-size:10px;font-weight:700;position:absolute;top:10px;right:10px}.view-toggle{gap:8px;margin:8px 0 12px;display:flex}.view-btn{background:var(--white);color:#888;border:2px solid #e0e0e0;border-radius:10px;flex:1;padding:9px 0;font-size:13px;font-weight:700;transition:all .15s}.view-btn-active{background:var(--primary-light);color:var(--primary-dark);border-color:var(--primary)}.list-search{width:100%;font-size:15px;font-family:var(--font);-webkit-appearance:none;border:2px solid #ddd;border-radius:12px;outline:none;margin-bottom:10px;padding:12px 14px;transition:border-color .2s}.list-search:focus{border-color:var(--primary)}.list-item{background:var(--white);border-radius:12px;justify-content:space-between;align-items:center;gap:10px;margin-bottom:8px;padding:12px 14px;display:flex;box-shadow:0 1px 4px #0000000f}.list-item-custom{border-left:4px solid var(--primary)}.list-item-words{flex:1;min-width:0}.list-en{color:#1a1a2e;font-size:15px;font-weight:700;display:block}.list-ja{color:var(--primary-dark);margin-top:1px;font-size:13px;display:block}.list-id{color:#888;margin-top:1px;font-size:12px;display:block}.list-item-actions{flex-shrink:0;gap:6px;display:flex}.list-edit-btn,.list-delete-btn{border-radius:50%;justify-content:center;align-items:center;width:36px;height:36px;font-size:16px;transition:background .15s;display:flex}.list-edit-btn{background:var(--primary-light);color:var(--primary-dark)}.list-delete-btn{color:#c0392b;background:#fde8e8}.list-edit-btn:active,.list-delete-btn:active{opacity:.7}.list-builtin-label{color:#bbb;flex-shrink:0;font-size:10px;font-weight:600}.list-empty{text-align:center;color:#aaa;padding:30px 0;font-size:14px}.list-edit-panel{margin-bottom:8px}.card-actions{gap:10px;margin:10px 0 4px;display:flex}.card-action-btn{border:2px solid #0000;border-radius:12px;flex:1;justify-content:center;align-items:center;gap:6px;padding:12px 0;font-size:14px;font-weight:700;transition:all .15s;display:flex}.card-action-icon{font-size:16px}.card-edit-btn{background:var(--primary-light);color:var(--primary-dark);border-color:var(--primary)}.card-delete-btn{color:#c0392b;background:#fde8e8;border-color:#e57373}.card-action-btn:active{opacity:.7;transform:scale(.97)}.card-action-btn:disabled{opacity:.4;cursor:not-allowed}ruby{ruby-align:center}rt{color:var(--primary);letter-spacing:.5px;font-size:.38em;font-weight:500}.card-romaji{color:#aaa;letter-spacing:1.5px;margin-top:2px;font-size:13px}.card-back-row{flex-direction:column;align-items:center;margin-bottom:12px;display:flex}.card-back-label{color:#aaa;font-size:11px}.card-back-word{color:var(--primary-dark);margin-top:2px;font-size:22px;font-weight:700}.card-back-read{color:#888;font-size:13px}.card-empty{text-align:center;color:#aaa;padding:40px 20px}.card-nav{justify-content:space-between;align-items:center;margin:4px 0 8px;display:flex}.nav-btn{background:var(--primary-light);color:var(--primary-dark);border-radius:10px;padding:8px 16px;font-size:14px;font-weight:600;transition:opacity .15s}.nav-btn:active{opacity:.7}.card-counter{color:#aaa;font-size:13px}.speech-btns{gap:8px;margin-bottom:16px;display:flex}.speech-btn{background:var(--white);border:1.5px solid #e0e0e0;border-radius:10px;flex:1;padding:8px 0;font-size:13px;font-weight:600;transition:background .15s}.speech-btn:active{background:var(--primary-light)}.ai-form{margin-top:8px}.ai-form-title{color:var(--primary-dark);margin-bottom:12px;font-size:16px;font-weight:700}.ai-lang-toggle{gap:8px;margin-bottom:10px;display:flex}.lang-toggle-btn{background:var(--bg);color:#777;border:1.5px solid #e0e0e0;border-radius:10px;flex:1;padding:8px 0;font-size:13px;font-weight:600;transition:all .15s}.lang-toggle-btn.active{background:var(--primary-light);color:var(--primary-dark);border-color:var(--primary)}.ai-input{border:1.5px solid #ddd;border-radius:10px;outline:none;width:100%;margin-bottom:10px;padding:12px 14px;font-size:16px;transition:border-color .2s}.ai-input:focus{border-color:var(--primary)}.ai-btn{background:var(--primary);color:#fff;border-radius:10px;width:100%;padding:12px;font-size:15px;font-weight:700;transition:opacity .15s}.ai-btn:disabled{opacity:.5;cursor:not-allowed}.ai-btn:not(:disabled):active{opacity:.85}.btn-primary{background:var(--primary);color:#fff;border-radius:10px;padding:12px;font-size:15px;font-weight:700}.ai-status{border-radius:8px;margin-top:8px;padding:6px 10px;font-size:13px}.ai-status-loading{color:#b58000;background:#fff8e1}.ai-status-success{background:var(--correct-bg);color:var(--correct-text)}.ai-status-error{background:var(--wrong-bg);color:var(--wrong-text)}.ai-status-warn{color:#a04000;background:#fff3e0}.quiz-header{margin-bottom:12px}.quiz-progress{color:#aaa;font-size:13px}.quiz-progress-bar{background:#eee;border-radius:3px;height:6px;margin-top:4px;overflow:hidden}.quiz-progress-fill{background:var(--primary);border-radius:3px;height:100%;transition:width .3s}.quiz-card{text-align:center;margin-bottom:16px}.quiz-prompt{color:#aaa;margin-bottom:8px;font-size:13px}.quiz-question{color:var(--primary-dark);margin-bottom:4px;font-size:36px;font-weight:800;line-height:1.6}.quiz-question-romaji{color:#aaa;letter-spacing:1.5px;margin-bottom:10px;font-size:13px}.quiz-speak{margin:0 auto}.quiz-opt-ruby{font-size:18px;font-weight:700;line-height:1.8;display:block}.quiz-opt-romaji{color:#888;letter-spacing:1px;margin-top:2px;font-size:11px;display:block}.quiz-options{grid-template-columns:1fr 1fr;gap:10px;display:grid}.quiz-option{background:var(--white);color:#333;cursor:pointer;text-align:left;border:2px solid #e0e0e0;border-radius:12px;justify-content:space-between;align-items:center;gap:6px;min-height:56px;padding:10px 8px 10px 12px;font-size:16px;font-weight:600;transition:all .15s;display:flex}.quiz-option:not(.answered):active{background:var(--primary-light);border-color:var(--primary)}.quiz-opt-content{flex:1;min-width:0}.quiz-opt-speak{background:var(--primary-light);width:32px;height:32px;color:var(--primary-dark);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:16px;line-height:1;transition:background .15s;display:flex}.quiz-opt-speak:active{background:var(--primary)}.quiz-option.correct{background:var(--correct-bg);border-color:var(--correct-text);color:var(--correct-text)}.quiz-option.wrong{background:var(--wrong-bg);border-color:var(--wrong-text);color:var(--wrong-text)}.quiz-empty{text-align:center;color:#aaa;padding:40px 20px}.quiz-result{text-align:center;padding:40px 20px}.result-emoji{margin-bottom:12px;font-size:64px}.result-score{color:var(--primary-dark);font-size:48px;font-weight:900}.result-pct{color:var(--primary);margin:4px 0;font-size:20px;font-weight:700}.result-msg{color:#555;margin:16px 0 24px;font-size:16px}.retry-btn{width:100%}.phrase-card{margin-bottom:12px}.phrase-main{align-items:flex-start;gap:10px;margin-bottom:8px;display:flex}.phrase-flag{margin-top:2px;font-size:22px}.phrase-text{color:var(--primary-dark);font-size:20px;font-weight:700}.phrase-read{color:#888;margin-top:2px;font-size:12px}.phrase-sub{background:var(--primary-light);border-radius:10px;align-items:flex-start;gap:10px;margin-bottom:8px;padding:8px 12px;display:flex}.phrase-flag-sm{margin-top:1px;font-size:18px}.phrase-text-sm{color:var(--primary-dark);font-size:15px;font-weight:600}.phrase-read-sm{color:#888;margin-top:1px;font-size:11px}.phrase-en{color:#aaa;margin-bottom:10px;font-size:13px;font-style:italic}.phrase-speech-btns{gap:6px;display:flex}.phrase-speech-btns .speech-btn{flex:1;padding:6px 0;font-size:12px}.preview-card{border:2px solid var(--primary);border-radius:var(--radius);background:var(--primary-light);margin-top:12px;padding:16px}.preview-title{color:var(--primary-dark);margin-bottom:12px;font-size:14px;font-weight:700}.preview-field{margin-bottom:10px}.preview-label{color:#777;margin-bottom:3px;font-size:11px;font-weight:600;display:block}.preview-input{background:var(--white);width:100%;font-size:15px;font-family:var(--font);-webkit-appearance:none;border:1.5px solid #ddd;border-radius:8px;outline:none;padding:8px 10px}.preview-input:focus{border-color:var(--primary)}.preview-btns{gap:8px;margin-top:14px;display:flex}.preview-btn-cancel{color:#555;font-size:14px;font-weight:600;font-family:var(--font);background:#e0e0e0;border-radius:10px;flex:1;padding:11px}.preview-btn-save{background:var(--primary);color:#fff;font-size:14px;font-weight:700;font-family:var(--font);border-radius:10px;flex:2;padding:11px;transition:opacity .15s}.preview-btn-save:disabled{opacity:.5;cursor:not-allowed}.preview-btn-save:not(:disabled):active{opacity:.85}