*{margin:0;padding:0;box-sizing:border-box}:root{--primary: #3730a3;--primary-hover: #312e81;--bg: #f0f0f0;--surface: #ffffff;--card-bg: #ffffff;--text: #333333;--text-secondary: #64748b;--border: #e2e8f0;--success: #22c55e;--warning: #f59e0b;--danger: #ef4444;--radius: 12px;--radius-sm: 8px}[data-theme=dark]{--bg: #1a1a1a;--surface: #2e2e2e;--card-bg: #2e2e2e;--text: #e8e8e8;--text-secondary: #e0e0e0;--border: #383838;--shadow-md: 0 2px 12px rgba(0,0,0,.4), 0 1px 3px rgba(0,0,0,.3);--shadow-lg: 0 8px 30px rgba(0,0,0,.5), 0 2px 8px rgba(0,0,0,.3)}html,body{font-family:-apple-system,BlinkMacSystemFont,Hiragino Sans,Hiragino Kaku Gothic ProN,Noto Sans JP,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;min-height:100dvh;-webkit-tap-highlight-color:transparent}body{margin:0;display:block}#root{max-width:480px;margin:0 auto;min-height:100dvh}.app{min-height:100dvh;padding-bottom:env(safe-area-inset-bottom,0)}.page{padding:16px 16px 32px}.page-header{display:flex;align-items:center;gap:12px;position:sticky;top:0;z-index:100;background:var(--bg);margin:-16px -16px 20px;padding:12px 16px}.sticky-top{position:sticky;top:0;z-index:100;background:var(--bg);padding-top:16px;margin:-16px -16px 0;padding-left:16px;padding-right:16px}.sticky-top .page-header,.sticky-top .search-bar{margin-bottom:12px}.page-header h1{font-size:1.4rem;font-weight:700;line-height:1.3;display:flex;align-items:center;gap:.5rem}.app-logo{width:32px;height:32px;border-radius:8px;box-shadow:2px 2px 5px #0000002e,-1px -1px 3px #ffffffe6}[data-theme=dark] .app-logo{box-shadow:2px 2px 5px #00000080,-1px -1px 3px #ffffff0f}.auth-logo-img{width:52px;height:52px;border-radius:14px}.header-settings-btn{margin-left:auto;font-size:1.3rem}.search-bar{margin-bottom:16px}.search-input-row{display:flex;align-items:center;gap:8px;background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius-sm);padding:8px 12px}.search-icon{font-size:.9rem;flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:7px;background:linear-gradient(145deg,#fafafa,#eaeaea);box-shadow:2px 2px 5px #0000001f,-1px -1px 3px #fff}[data-theme=dark] .search-icon{background:linear-gradient(145deg,#3e3e3e,#2a2a2a);box-shadow:2px 2px 5px #00000080,-1px -1px 3px #ffffff0f}.search-input{flex:1;border:none;outline:none;background:transparent;color:var(--text);font-size:.95rem;font-family:inherit}.search-mode-select{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);color:var(--text);font-size:.8rem;padding:4px 6px;font-family:inherit;cursor:pointer}.search-results{margin-bottom:16px}.search-result-deck{font-size:.75rem;color:var(--text-secondary);white-space:nowrap}.settings-subsection-title{font-size:.85rem;font-weight:600;color:var(--text);margin:12px 0 4px}.settings-subsection-title:first-of-type{margin-top:4px}.deck-select-list{max-height:200px;overflow-y:auto;margin-bottom:8px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 20px;border:none;border-radius:var(--radius-sm);background:var(--surface);color:var(--text);font-size:.95rem;font-weight:500;cursor:pointer;transition:all .15s;font-family:inherit;box-shadow:0 4px 12px #0000002e,0 1px 3px #0000001a}.btn:active{transform:scale(.97);box-shadow:0 1px 4px #00000024,0 1px 2px #00000014}[data-theme=dark] .btn{box-shadow:0 4px 16px #0000008c,0 1px 4px #0000004d}[data-theme=dark] .btn:active{box-shadow:0 1px 4px #0000004d,0 1px 2px #0003}.btn-primary{background:#333;color:#fff;border-color:#333}.btn-primary:active{background:#111}[data-theme=dark] .btn-primary{background:#9ca3af;border-color:#9ca3af;color:#111}[data-theme=dark] .btn-primary:active{background:#6b7280}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-full{width:100%}.btn-large{padding:14px 24px;font-size:1.05rem}.btn-sm{padding:6px 12px;font-size:.85rem}.btn-back{background:none;border:none;color:var(--text);font-size:1rem;cursor:pointer;padding:4px 0;font-family:inherit;font-weight:500}.btn-icon{background:linear-gradient(145deg,#fafafa,#eaeaea);box-shadow:2px 2px 5px #0000001f,-1px -1px 3px #fff;border:none;cursor:pointer;font-size:1rem;width:30px;height:30px;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;line-height:1;flex-shrink:0}[data-theme=dark] .btn-icon{background:linear-gradient(145deg,#3e3e3e,#2a2a2a);box-shadow:2px 2px 5px #00000080,-1px -1px 3px #ffffff0f}[data-theme=dark] .deck-card,[data-theme=dark] .card-item,[data-theme=dark] .form-card,[data-theme=dark] .analytics-section,[data-theme=dark] .settings-section{box-shadow:0 4px 16px #0000008c,0 1px 4px #0000004d}[data-theme=dark] .study-card-front,[data-theme=dark] .study-card-back{box-shadow:0 8px 30px #00000080,0 2px 8px #0000004d}.input{width:100%;padding:12px;border:none;border-radius:var(--radius-sm);font-size:1rem;font-family:inherit;background:var(--surface);color:var(--text);outline:none;transition:box-shadow .15s;box-shadow:0 4px 12px #0000002e,0 1px 3px #0000001a}.input:focus{box-shadow:0 4px 16px #00000038,0 1px 4px #00000024}[data-theme=dark] .input{box-shadow:0 4px 16px #0000008c,0 1px 4px #0000004d}[data-theme=dark] .input:focus{box-shadow:0 4px 20px #000000a6,0 1px 6px #0006}.textarea{resize:vertical;min-height:60px}.import-textarea{min-height:160px;font-family:monospace;font-size:.85rem;line-height:1.5}.form-card{background:var(--surface);border-radius:var(--radius);padding:16px;margin-bottom:16px;display:flex;flex-direction:column;gap:12px;box-shadow:0 2px 8px #0000001a,0 1px 2px #0000000f}.form-card h3{font-size:1rem;font-weight:600;color:var(--text-secondary)}.form-label{font-size:.85rem;font-weight:500;color:var(--text);display:flex;align-items:center;gap:6px}.required{font-size:.7rem;color:var(--danger);font-weight:600}.form-actions{display:flex;gap:8px;margin-top:4px}.deck-list{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}.deck-card{background:var(--surface);border-radius:var(--radius);padding:16px;display:flex;align-items:center;gap:12px;cursor:pointer;transition:all .15s;box-shadow:0 4px 12px #0000002e,0 1px 3px #0000001a}.deck-card:active{transform:scale(.98);background:#f1f5f9}.deck-info{flex:1;min-width:0}.deck-name{font-size:1.05rem;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.deck-type-badge{font-size:.75rem;color:#111;background:#e5e7eb;padding:2px 8px;border-radius:99px;font-weight:500}.deck-stats{display:flex;flex-direction:column;align-items:flex-end;gap:4px;font-size:.85rem;color:var(--text-secondary)}.deck-actions{display:flex;gap:4px}.deck-edit-row{display:flex;gap:8px;align-items:center;width:100%}.deck-edit-row .input{flex:1}.progress-bar-mini{width:80px;height:6px;background:var(--border);border-radius:3px;position:relative;overflow:hidden}.progress-bar-mini .progress-fill{height:100%;background:var(--success);border-radius:3px;transition:width .3s}.progress-bar-mini .progress-text{position:absolute;right:0;top:-16px;font-size:.7rem;color:var(--text-secondary)}.card-list{margin-top:20px}.card-list h2{font-size:1rem;font-weight:600;color:var(--text-secondary);margin-bottom:12px}.card-item{background:var(--surface);border-radius:var(--radius-sm);padding:12px 16px;margin-bottom:8px;display:flex;align-items:center;gap:12px;cursor:pointer;box-shadow:0 2px 8px #0000001a,0 1px 2px #0000000f;transition:all .15s}.card-item:active{background:#f1f5f9}.card-item-main{flex:1;min-width:0}.card-word{font-weight:600;display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--text)}.card-meaning{font-size:.85rem;color:var(--text-secondary);display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.card-item-actions{display:flex;align-items:center;gap:4px}.card-status{font-size:1.2rem}.progress-section{margin-bottom:20px}.progress-bar{width:100%;height:8px;background:var(--border);border-radius:4px;overflow:hidden}.progress-fill{height:100%;background:var(--success);border-radius:4px;transition:width .3s ease}.progress-label{font-size:.85rem;color:var(--text-secondary);margin-top:6px;text-align:center}.action-buttons{display:flex;flex-direction:column;gap:8px;margin-bottom:12px}.empty-state{text-align:center;padding:40px 20px;color:var(--text-secondary)}.text-secondary{color:var(--text-secondary);font-size:.85rem}.study-page{display:grid;grid-template-rows:auto 1fr auto;height:100dvh;padding:12px 16px 0;box-sizing:border-box;overflow:hidden}.study-content{overflow-y:auto;display:flex;flex-direction:column;min-height:0}.study-header{display:flex;align-items:center;gap:12px;margin-bottom:16px}.study-progress{flex:1;display:flex;align-items:center;gap:8px;font-size:.85rem;color:var(--text-secondary)}.study-progress .progress-bar{flex:1}.study-card-container{display:flex;align-items:center;justify-content:center;perspective:1000px;padding:24px 0;flex:1}.study-card{width:100%;max-width:400px;aspect-ratio:5 / 3;max-height:240px;position:relative;transform-style:preserve-3d;transition:transform .5s cubic-bezier(.4,0,.2,1)}.study-card.flipped{transform:rotateY(180deg)}.study-card.no-transition{transition:none!important}.study-card-front,.study-card-back{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;background:var(--surface);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;align-items:center;justify-content:center;box-shadow:0 8px 24px #00000024,0 2px 6px #00000014}.study-card-back{transform:rotateY(180deg)}.study-card-word{font-size:1.8rem;font-weight:700;text-align:center;word-break:break-word;color:var(--text)}.study-card-pron{font-size:1rem;color:var(--text-secondary);margin-top:8px}.study-card-etymology{font-size:.85rem;color:var(--text-secondary);margin-top:8px;background:#f1f5f9;padding:4px 12px;border-radius:6px}.study-card-word-small{font-size:1rem;color:var(--text-secondary);margin-bottom:8px}.study-card-meaning{font-size:1.4rem;font-weight:600;text-align:center;word-break:break-word}.explanation-section{background:var(--surface);border-radius:var(--radius);padding:16px;margin:12px 0;display:flex;flex-direction:column;gap:8px;box-shadow:0 1px 3px #0000000f;animation:slideUp .3s ease}.explanation-item{font-size:.9rem;line-height:1.5}.explanation-definition{font-style:italic;color:var(--text-secondary)}.explanation-label{font-weight:600;color:var(--primary);margin-right:4px}[data-theme=dark] .explanation-label{color:#818cf8}.study-buttons{padding:12px 0;padding-bottom:max(12px,env(safe-area-inset-bottom));flex-shrink:0}.study-prompt{text-align:center;font-size:.9rem;color:var(--text-secondary);margin-bottom:12px}.rating-buttons{display:flex;gap:12px;justify-content:center}.rating-btn{width:80px;height:80px;border-radius:50%;border:3px solid var(--border);background:var(--surface);font-size:2rem;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .15s;font-family:inherit;box-shadow:0 4px 12px #0000002e,0 1px 3px #0000001a}.rating-btn:active{transform:scale(.9);box-shadow:0 1px 4px #0000001f,0 1px 2px #00000014}[data-theme=dark] .rating-btn{box-shadow:0 4px 16px #0000008c,0 1px 4px #0000004d}.rating-correct{border-color:var(--success)}.rating-correct:active{background:#dcfce7}.rating-partial{border-color:var(--warning)}.rating-partial:active{background:#fef3c7}.rating-wrong{border-color:var(--danger)}.rating-wrong:active{background:#fee2e2}.study-done{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100dvh;gap:16px;text-align:center}.study-done h1{font-size:1.6rem}.study-retest-badge{display:inline-block;background:var(--warning, #f59e0b);color:#fff;font-size:.7rem;font-weight:700;padding:2px 6px;border-radius:4px;margin-right:6px;vertical-align:middle}.btn-review{border-color:var(--warning, #f59e0b);color:var(--warning, #f59e0b)}.preview-list{display:flex;flex-direction:column;gap:8px}.preview-item{background:var(--bg);border-radius:var(--radius-sm);padding:10px 12px;border:1px solid var(--border)}.import-sticky-footer{position:sticky;bottom:0;background:var(--bg);padding:12px 0 16px;margin-top:8px}.preview-word{font-weight:600;font-size:1rem}.preview-pron{font-size:.8rem;color:var(--text-secondary)}.preview-meaning{font-size:.9rem;margin-top:4px}.preview-detail{font-size:.8rem;color:var(--text-secondary)}.analytics-deck-name{font-size:1.1rem;font-weight:600;margin-bottom:20px}.analytics-summary{display:flex;justify-content:center;margin-bottom:24px}.analytics-total{display:flex;flex-direction:column;align-items:center;gap:2px}.analytics-total-num{font-size:2.4rem;font-weight:700;color:var(--primary)}.analytics-total-label{font-size:.85rem;color:var(--text-secondary)}.analytics-section{background:var(--surface);border-radius:var(--radius);padding:16px;margin-bottom:16px;box-shadow:0 2px 8px #0000001a,0 1px 2px #0000000f}.analytics-section-title{font-size:1rem;font-weight:600;margin-bottom:12px}.analytics-section-desc{font-size:.8rem;color:var(--text-secondary);margin-bottom:12px}.analytics-bars{display:flex;flex-direction:column;gap:12px}.analytics-bar-row{display:flex;align-items:center;gap:8px}.analytics-bar-label{width:80px;font-size:.85rem;font-weight:500;flex-shrink:0}.analytics-bar-track{flex:1;height:12px;background:var(--border);border-radius:6px;overflow:hidden}.analytics-bar-fill{height:100%;border-radius:6px;transition:width .4s ease;min-width:2px}.analytics-bar-correct{background:var(--success)}.analytics-bar-partial{background:var(--warning)}.analytics-bar-wrong{background:var(--danger)}.analytics-bar-value{font-size:.8rem;color:var(--text-secondary);flex-shrink:0;min-width:70px;text-align:right}.analytics-highlight{display:flex;align-items:baseline;gap:4px}.analytics-highlight-num{font-size:2rem;font-weight:700;color:var(--danger)}.analytics-highlight-label{font-size:.9rem;color:var(--text-secondary)}.analytics-status-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.analytics-status-item{display:flex;flex-direction:column;align-items:center;padding:12px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm)}.analytics-status-num{font-size:1.5rem;font-weight:700}.analytics-status-label{font-size:.8rem;color:var(--text-secondary)}.analytics-forecast{display:flex;gap:4px;align-items:flex-end;height:120px;margin-top:12px}.analytics-forecast-day{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;height:100%}.analytics-forecast-bar-wrapper{flex:1;width:100%;display:flex;align-items:flex-end;justify-content:center}.analytics-forecast-bar{width:70%;background:var(--primary);border-radius:3px 3px 0 0;min-height:0;transition:height .3s}.analytics-forecast-count{font-size:.8rem;font-weight:600}.analytics-forecast-label{font-size:.65rem;color:var(--text-secondary);white-space:nowrap}.misremembered-list{margin-top:8px;display:flex;flex-direction:column;gap:6px}.misremembered-item{background:#fef2f2;border:1px solid #fecaca;border-radius:var(--radius-sm);padding:10px 12px;cursor:pointer;transition:all .15s}.misremembered-item:active{background:#fee2e2}.misremembered-word{font-weight:600;display:block}.misremembered-meaning{font-size:.85rem;color:var(--text-secondary);display:block;margin-top:2px}.settings-section{background:var(--card-bg);border-radius:12px;padding:1.2rem;margin-bottom:1rem;border:1px solid var(--border);box-shadow:0 2px 8px #0000001a,0 1px 2px #0000000f}.settings-section-title{font-size:1.1rem;font-weight:600;margin:0 0 .5rem}.settings-group-title{font-size:1.25rem;font-weight:700;color:var(--text);text-transform:uppercase;letter-spacing:.05em;margin:1.5rem 0 .5rem;padding-bottom:.3rem;border-bottom:1px solid var(--border)}.settings-group-title:first-of-type{margin-top:0}.settings-number-input{width:70px;padding:4px 8px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);font-size:.9rem;font-family:inherit;text-align:center}.settings-description{font-size:.85rem;color:var(--text-secondary);margin:0 0 .8rem;line-height:1.5}.settings-warning{color:var(--danger);font-weight:500}.settings-toggle-row{display:flex;align-items:center;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--border);cursor:pointer;font-size:.95rem}.settings-toggle-row:last-child{border-bottom:none}.settings-toggle-row input[type=checkbox]{width:18px;height:18px;cursor:pointer;accent-color:var(--primary)}.settings-side-select{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);font-size:.9rem;padding:4px 8px;cursor:pointer;font-family:inherit}.settings-filter-buttons{display:flex;gap:.4rem;margin-bottom:.8rem;flex-wrap:wrap}.btn-small{padding:.3rem .7rem!important;font-size:.8rem!important}.settings-markdown-area{width:100%;box-sizing:border-box;font-family:SF Mono,Fira Code,monospace;font-size:.75rem;padding:.8rem;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:var(--text);resize:vertical;margin-bottom:.6rem;line-height:1.4}.settings-empty{font-size:.85rem;color:var(--text-secondary);text-align:center;padding:1rem 0}.emoji-icon{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:8px;background:linear-gradient(145deg,#fafafa,#eaeaea);box-shadow:2px 2px 5px #0000001f,-1px -1px 3px #fff;font-size:.95rem;flex-shrink:0;vertical-align:middle}[data-theme=dark] .emoji-icon{background:linear-gradient(145deg,#3e3e3e,#2a2a2a);box-shadow:2px 2px 5px #00000080,-1px -1px 3px #ffffff0f}.settings-section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:.5rem}.settings-section-header .settings-section-title{margin:0}.btn-info{width:22px;height:22px;border-radius:50%;border:1.5px solid var(--text-secondary);background:none;color:var(--text-secondary);font-size:.75rem;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-family:inherit;line-height:1}.btn-info:hover{border-color:var(--text);color:var(--text)}.info-modal-overlay{position:fixed;inset:0;background:#00000080;z-index:200;display:flex;align-items:center;justify-content:center;padding:24px;animation:fadeIn .15s ease}.info-modal{width:100%;max-width:400px;background:var(--surface);border-radius:var(--radius);padding:20px;animation:slideUp .25s ease}.info-modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.info-modal-title{font-size:1rem;font-weight:700}.info-modal-close{background:none;border:none;font-size:1rem;cursor:pointer;color:var(--text-secondary);padding:4px;line-height:1}.info-modal-body{font-size:.9rem;color:var(--text-secondary);line-height:1.6}.theme-button-group{display:flex;gap:8px}.theme-btn{flex:1;font-size:.9rem}.theme-btn-active{background:#111;color:#fff;border-color:#111}.btn-danger{background:var(--danger)!important;color:#fff!important;border:none!important}.btn-danger:hover{opacity:.9}.btn-danger:disabled{opacity:.5;cursor:not-allowed}.config-section{background:var(--surface);border-radius:var(--radius-sm);padding:12px;display:flex;flex-direction:column;gap:8px}.config-section h4{font-size:.9rem;font-weight:600;color:var(--text);margin:0}.config-toggle-btn{background:none;border:none;width:100%;display:flex;align-items:center;justify-content:space-between;padding:0;cursor:pointer;font-family:inherit;font-size:.9rem;font-weight:600;color:var(--text)}.toggle-arrow{font-size:.75rem;color:var(--text)}.config-toggle-row{display:flex;align-items:center;justify-content:space-between;padding:6px 0;border-bottom:1px solid var(--border);cursor:pointer;font-size:.9rem;color:var(--text)}.config-toggle-row:last-child{border-bottom:none}.config-toggle-row input[type=checkbox]{width:18px;height:18px;cursor:pointer;accent-color:var(--primary)}.import-settings-title{font-size:1rem;font-weight:600;margin:0 0 4px}.import-settings-list{display:flex;flex-direction:column}.term-preview{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px;margin-top:4px}.term-preview-row{display:flex;gap:4px;flex-wrap:wrap}.term-preview-col{flex:1;min-width:60px;padding:8px;border-radius:6px;font-size:.8rem;font-weight:500;text-align:center;background:var(--border);display:flex;flex-direction:column;gap:2px}.term-preview-col small{font-size:.65rem;font-weight:600}.term-preview-col.question-col{background:#dbeafe;color:#1d4ed8}.term-preview-col.answer-col{background:#dcfce7;color:#16a34a}.term-preview-col.explanation-col{background:#fef3c7;color:#b45309}.study-card-term-field{display:flex;flex-direction:column;align-items:center;gap:2px;margin-bottom:8px}.study-card-term-label{font-size:.7rem;color:var(--text-secondary);font-weight:500}.study-card-term-value{font-size:1.2rem;font-weight:600;text-align:center;word-break:break-word}.study-card-front .study-card-term-field:first-child .study-card-term-value{font-size:1.6rem}@keyframes slideUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg);padding:16px}.auth-card{background:var(--surface);border-radius:var(--radius);padding:32px 24px;width:100%;max-width:380px;box-shadow:0 4px 24px #0000001f,0 1px 4px #00000014}.auth-header{display:flex;align-items:center;justify-content:center;gap:10px;margin-bottom:24px}.auth-logo{font-size:2rem}.auth-title{font-size:1.6rem;font-weight:700;color:var(--text)}.auth-tabs{display:flex;background:var(--bg);border-radius:var(--radius-sm);padding:4px;margin-bottom:24px}.auth-tab{flex:1;padding:8px;border:none;background:none;border-radius:6px;font-size:.9rem;font-weight:500;color:var(--text-secondary);cursor:pointer;transition:all .15s}.auth-tab.active{background:var(--surface);color:var(--text);font-weight:600;box-shadow:0 1px 4px #0000001f}.auth-form{display:flex;flex-direction:column;gap:16px}.auth-field{display:flex;flex-direction:column;gap:6px}.auth-error{color:var(--danger);font-size:.85rem;margin:0}.auth-message{color:var(--success);font-size:.85rem;margin:0}.auth-submit{width:100%;padding:12px;font-size:1rem;margin-top:4px}.app-loading{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--bg);gap:12px;color:var(--text-secondary)}.app-loading-icon{font-size:2.5rem;animation:pulse 1.5s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}.offline-help-backdrop{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:16px;animation:fadeIn .15s ease-out}.offline-help-card{background:var(--surface);border-radius:16px;padding:24px;max-width:420px;width:100%;max-height:90vh;overflow-y:auto;box-shadow:0 20px 50px #0000004d;animation:slideUp .2s ease-out}.offline-help-card h2{margin:0 0 12px;color:var(--text);font-size:1.25rem}.offline-help-card p{color:var(--text);margin:0 0 16px}.offline-help-card ul{list-style:none;padding:0;margin:0 0 20px;display:flex;flex-direction:column;gap:10px}.offline-help-card li{color:var(--text);font-size:.92rem;line-height:1.5;padding:10px 12px;background:var(--bg);border-radius:10px}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.file-import-section{margin-top:16px}.file-import-divider{display:flex;align-items:center;gap:12px;margin:16px 0 12px;color:var(--text-secondary);font-size:.85rem}.file-import-divider:before,.file-import-divider:after{content:"";flex:1;height:1px;background:var(--border)}.file-import-btn{background:var(--surface);color:var(--text);border:1px dashed var(--border)}.file-import-btn:hover{background:var(--bg)}.file-import-hint{font-size:.8rem;color:var(--text-secondary);text-align:center;margin:8px 0 0}.file-import-error{color:#dc2626;font-size:.85rem;margin:8px 0 0;text-align:center}[data-theme=dark] .file-import-error{color:#fca5a5}.analytics-streak-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.analytics-streak-item{background:var(--bg);border-radius:12px;padding:16px;display:flex;flex-direction:column;align-items:center;gap:4px}.analytics-streak-num{font-size:1.6rem;font-weight:700;color:var(--text)}.analytics-streak-label{font-size:.8rem;color:var(--text-secondary)}.weak-cards-list{display:flex;flex-direction:column;gap:8px}.weak-card-item{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px;background:var(--bg);border-radius:10px;cursor:pointer;transition:transform .1s}.weak-card-item:hover{transform:translateY(-1px)}.weak-card-text{display:flex;flex-direction:column;gap:2px;flex:1;min-width:0}.weak-card-word{font-weight:600;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.weak-card-meaning{font-size:.85rem;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.weak-card-stat{display:flex;flex-direction:column;align-items:flex-end;gap:2px;flex-shrink:0}.weak-card-rate{font-size:1.1rem;font-weight:700;color:#dc2626}[data-theme=dark] .weak-card-rate{color:#fca5a5}.weak-card-detail{font-size:.75rem;color:var(--text-secondary)}.free-usage-card{background:var(--surface);border-radius:12px;padding:14px 16px;margin-bottom:12px;border:1px solid var(--border)}.free-usage-title{font-size:.85rem;color:var(--text-secondary);margin-bottom:8px;font-weight:600}.free-usage-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px}.free-usage-grid-2{grid-template-columns:1fr 1fr}.free-usage-note{font-size:.75rem;color:var(--text-secondary);margin-top:8px;text-align:center}.free-usage-item{display:flex;flex-direction:column;align-items:center;gap:2px;padding:8px 4px;background:var(--bg);border-radius:8px}.free-usage-label{font-size:.7rem;color:var(--text-secondary)}.free-usage-value{font-size:.95rem;font-weight:700;color:var(--text)}