.word-combobox-form{display:flex;flex-direction:column;gap:.4rem;padding:.6rem;background:var(--surface-alt);border:1px solid var(--border);border-radius:16px}.combobox-wrapper{position:relative;flex:1;display:flex}.suggestions-dropdown{position:absolute;top:100%;left:0;right:0;background:var(--surface);border:1px solid var(--border);border-top:none;border-radius:0 0 12px 12px;max-height:300px;overflow-y:auto;overflow-x:hidden;z-index:1000;box-shadow:0 12px 20px #0f172a1f}.suggestion-item{padding:.75rem;border-bottom:1px solid var(--border);cursor:pointer;display:flex;align-items:center;gap:1rem;transition:background-color .15s ease;min-width:0}.suggestion-item:hover,.suggestion-item.selected{background-color:var(--surface-alt)}.suggestion-hanzi{font-size:1.2rem;font-weight:600;min-width:60px}.suggestion-pinyin{font-size:.9rem;color:var(--text-muted);min-width:80px;font-style:italic;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.suggestion-meaning{font-size:.85rem;color:var(--text-soft);flex:1;text-overflow:ellipsis;overflow:hidden;white-space:nowrap}.input-group{display:flex;gap:.5rem;align-items:stretch}.word-input{flex:2;padding:1rem;border:1px solid var(--border);border-radius:12px;font-size:1.1rem;font-family:inherit;background:var(--surface)}.word-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #6f8f6129}.word-input:disabled{background-color:#f3eee4;color:var(--text-soft);cursor:not-allowed}.lookup-button{font-size:.95rem;font-weight:600;cursor:pointer}.lookup-button:hover:not(:disabled){background-color:var(--primary-dark)}.lookup-button:active:not(:disabled){background-color:#4f6447}.lookup-button:disabled{background-color:#c4d2bc;cursor:not-allowed}.input-hints{display:flex;justify-content:space-between;font-size:.85rem;color:var(--text-soft);padding:0 .5rem}.loading-status{color:var(--primary);font-weight:500}.suggestions-dropdown::-webkit-scrollbar{width:6px}.suggestions-dropdown::-webkit-scrollbar-track{background:var(--surface-alt);border-radius:3px}.suggestions-dropdown::-webkit-scrollbar-thumb{background:#b7ab93;border-radius:3px}.suggestions-dropdown::-webkit-scrollbar-thumb:hover{background:#95866b}@media (max-width: 768px){.word-combobox-form{position:sticky;top:72px;z-index:6}.input-group{flex-direction:column;align-items:stretch}.lookup-button{width:100%}.word-input{font-size:1rem;padding:.85rem}.input-hints{flex-direction:column;align-items:flex-start;gap:.25rem}}@media (max-width: 480px){.suggestion-item{align-items:flex-start;flex-direction:column;gap:.4rem}.suggestion-hanzi,.suggestion-pinyin{min-width:0}.suggestion-meaning{white-space:nowrap}}.words-table-scroll{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}.words-table-header-sound,.words-table-cell-sound{width:50px;text-align:center}.btn-play{background:none;border:none;font-size:1.1rem;cursor:pointer;padding:.25rem;transition:transform .2s;display:inline-flex;align-items:center;justify-content:center}.btn-play:hover{transform:scale(1.1)}.btn-play.playing{animation:pulse .6s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.6}}.words-table-cell-remove{text-align:center;width:40px}.btn-remove{background:none;border:none;font-size:1rem;color:#999;cursor:pointer;padding:0;transition:color .2s}.btn-remove:hover{color:#e74c3c}@media (max-width: 768px){.words-table th,.words-table td{padding:.5rem;font-size:.85rem}.words-table-cell-characters{font-size:.95rem}.words-table-cell-meanings{white-space:normal;min-width:160px}.words-table-cell-topics{display:none}.words-table-scroll{border-radius:6px;border:1px solid #eee}}.word-card{display:flex;align-items:flex-start;gap:1rem;padding:1rem;border:1px solid #e0e0e0;border-radius:8px;background-color:#fff;transition:all .2s ease;cursor:pointer;height:100%;min-height:220px}.word-card:hover{border-color:#b0b0b0;box-shadow:0 2px 8px #0000001a}.word-card.selectable{border-color:#d0d0d0}.word-card.selectable:hover{background-color:#f9f9f9}.word-card.selected{background-color:#e3f2fd;border-color:#2196f3;box-shadow:0 2px 8px #2196f333}.word-card-checkbox{flex-shrink:0;display:flex;align-items:center}.word-card-checkbox input[type=checkbox]{width:18px;height:18px;cursor:pointer}.word-card-main{flex:1;min-width:0;display:flex;flex-direction:column;height:100%}.word-card-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:.5rem;gap:1rem}.word-card-characters{font-size:2rem;font-weight:600;margin:0;color:#000;flex:1}.word-card-controls{display:flex;gap:.5rem;flex-shrink:0;align-self:flex-start}.btn-play-card,.btn-remove-card{background:none;border:none;padding:.5rem;cursor:pointer;font-size:1.2rem;display:flex;align-items:center;justify-content:center;border-radius:4px;transition:all .2s ease;color:#666}.btn-play-card:hover{background-color:#f0f0f0;color:#2196f3}.btn-play-card.playing{color:#4caf50;background-color:#f1f8e9}.btn-remove-card:hover{background-color:#ffebee;color:#f44336}.word-card-body{display:flex;flex-direction:column;gap:.5rem;flex:1}.word-card-pinyin{font-size:.95rem;color:#666;font-style:italic}.word-card-meanings{font-size:.9rem;color:#555;line-height:1.4;min-height:2.8em}.meanings-overflow{color:#999;font-size:.85rem;margin-left:.25rem}.word-card-meta{display:flex;gap:.5rem;flex-wrap:wrap}.badge-hsk,.badge-pos{display:inline-block;padding:.25rem .75rem;font-size:.75rem;font-weight:500;border-radius:4px;background-color:#f5f5f5;color:#333}.badge-hsk{background-color:#fff3cd;color:#856404}.badge-pos{background-color:#e7f3ff;color:#004085}.word-card-decks{margin-top:.5rem;padding-top:.5rem;border-top:1px solid #f0f0f0;margin-top:auto}.decks-label{display:block;font-size:.8rem;font-weight:500;color:#999;margin-bottom:.25rem}.deck-names{display:flex;flex-wrap:wrap;gap:.35rem}.deck-name-badge{display:inline-block;padding:.2rem .6rem;font-size:.75rem;background-color:#e0e0e0;color:#333;border-radius:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:150px}@media (max-width: 768px){.word-card{flex-direction:column}.word-card-characters{font-size:1.5rem}.word-card-header{flex-direction:column;align-items:flex-start}.word-card-controls{align-self:flex-end}}@media (max-width: 600px){.word-card{padding:.85rem;gap:.75rem}.word-card-characters{font-size:1.35rem}.word-card-pinyin,.word-card-meanings{font-size:.85rem}.word-card-controls{width:100%;justify-content:flex-end}.deck-name-badge{max-width:120px}}.words-tab{display:flex;flex-direction:column;gap:1.5rem;padding:1.5rem}.words-tab-loading,.words-tab-empty{text-align:center;padding:3rem 1rem;color:#666;font-size:1rem}.words-tab-controls{display:flex;align-items:center;gap:1rem;flex-wrap:wrap}.sort-controls,.filter-controls,.view-mode-controls{display:flex;align-items:center;gap:.5rem}.sort-controls label,.filter-controls label{font-weight:500;color:#333}.sort-controls select,.filter-controls select{padding:.5rem .75rem;border:1px solid #ddd;border-radius:4px;background:#fff;cursor:pointer;font-size:.9rem}.view-mode-controls{border:1px solid #ddd;border-radius:4px;background:#fff;padding:.25rem}.btn-secondary{padding:.5rem 1rem;background:#f0f0f0;border:1px solid #ddd;border-radius:4px;cursor:pointer;font-weight:500;transition:all .2s}.btn-secondary:hover{background:#e0e0e0;border-color:#999}.btn-secondary.active{background:#007bff;color:#fff;border-color:#0056b3}.bulk-actions{display:flex;align-items:center;gap:1rem;padding:1rem;background:#f0f8ff;border:1px solid #b3d9ff;border-radius:6px}.bulk-actions span{font-weight:500;color:#0056b3}.deck-selector{padding:.5rem .75rem;border:1px solid #ddd;border-radius:4px;background:#fff;cursor:pointer;font-size:.9rem;flex:1;min-width:200px}.btn-primary{padding:.5rem 1rem;background:#007bff;color:#fff;border:none;border-radius:4px;cursor:pointer;font-weight:500;transition:all .2s}.btn-primary:hover:not(:disabled){background:#0056b3}.words-table{width:100%;border-collapse:collapse;border:1px solid #ddd;border-radius:6px;overflow:hidden}.words-table thead{background:#f5f5f5}.words-table th{padding:.75rem;text-align:left;font-weight:600;color:#333;border-bottom:2px solid #ddd;font-size:.9rem}.words-table td{padding:.75rem;border-bottom:1px solid #f0f0f0;font-size:.9rem}.words-table tbody tr:hover{background:#f9f9f9}.words-table-row.selectable{cursor:pointer}.words-table-row.selected{background:#e3f2fd}.words-table-checkbox-header,.words-table-checkbox{width:40px;text-align:center}.words-table-checkbox input[type=checkbox],.words-table-checkbox-header input[type=checkbox]{cursor:pointer}.words-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(400px,1fr));gap:1rem;margin-top:1rem}@media (max-width: 768px){.words-grid{grid-template-columns:1fr}.words-tab-controls{flex-direction:column;align-items:flex-start}.sort-controls,.filter-controls,.view-mode-controls,.sort-controls select,.filter-controls select{width:100%}}@media (max-width: 600px){.words-tab{padding:1rem;gap:1.25rem}.bulk-actions{flex-direction:column;align-items:stretch;gap:.75rem}.deck-selector,.btn-primary,.btn-secondary,.view-mode-controls{width:100%}.btn-view-mode{flex:1}.words-grid{gap:.75rem;margin-top:.5rem}}.words-table-cell-decks{color:#666;max-width:200px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.words-table-cell-characters{font-weight:600;font-size:1rem;color:#1a1a1a}.words-table-cell-pinyin{color:#666;font-style:italic}.words-table-cell-meanings{color:#333}.words-table-cell-hsk{color:#0056b3;font-weight:500}.words-table-cell-topics{color:#666;font-size:.85rem}.words-table-cell-date{color:#999;font-size:.85rem}.deck-word-list{background:#fff;border-radius:12px;box-shadow:0 2px 8px #00000014;overflow:hidden;display:flex;flex-direction:column}.deck-word-list-controls{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;padding:1rem;border-bottom:1px solid #f0f0f0;background-color:#fafafa}.filter-controls{display:flex;align-items:center;gap:.5rem}.filter-controls label{font-weight:500;color:#333;font-size:.9rem}.filter-controls select{padding:.5rem .75rem;border:1px solid #ddd;border-radius:4px;background:#fff;cursor:pointer;font-size:.9rem}.view-mode-controls{border:1px solid #ddd;border-radius:4px;background:#fff;padding:.25rem;display:flex;gap:0}.btn-view-mode{padding:.5rem .75rem;background:transparent;border:none;cursor:pointer;font-size:.9rem;color:#666;border-radius:3px;transition:all .2s ease}.btn-view-mode:hover{background-color:#f5f5f5;color:#333}.btn-view-mode.active{background-color:#e0e0e0;color:#000;font-weight:500}.deck-words-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:3rem;text-align:center;color:#999}.deck-words-empty .empty-illustration{font-size:3rem;margin-bottom:1rem}.words-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(400px,1fr));gap:1rem;padding:1rem}@media (max-width: 1024px){.words-grid{grid-template-columns:repeat(auto-fill,minmax(350px,1fr))}}@media (max-width: 768px){.words-grid{grid-template-columns:1fr}.deck-word-list-controls{flex-direction:column;align-items:flex-start}.filter-controls,.filter-controls select{width:100%}}@media (max-width: 600px){.deck-word-list-controls{padding:.75rem;gap:.75rem}.view-mode-controls,.btn-secondary{width:100%}.btn-view-mode{flex:1}.words-grid{gap:.75rem;padding:.75rem}}.add-word-modal{max-width:600px}.add-word-search{padding:1.5rem;display:flex;flex-direction:column;gap:1rem;flex:1}.search-input-wrapper{position:relative;display:flex;align-items:center;width:100%}.search-input{width:100%;padding:.75rem;border:1px solid #ddd;border-radius:6px;font-size:.95rem;transition:border-color .2s}.search-input:focus{outline:none;border-color:#007bff;box-shadow:0 0 0 3px #007bff1a}.search-input:disabled{background:#f5f5f5;cursor:not-allowed}.search-loading{position:absolute;right:12px;font-size:.85rem;color:#999;background:#fff;padding:0 .5rem}.suggestions-dropdown{position:absolute;top:100%;left:0;right:0;display:flex;flex-direction:column;gap:.5rem;max-height:400px;overflow-y:auto;overflow-x:hidden;border:1px solid #ddd;border-radius:6px;background:#fff;margin-top:.5rem;z-index:1000;box-shadow:0 4px 6px #0000001a}.suggestions-dropdown-2{display:flex;flex-direction:column;gap:.5rem;max-height:400px;overflow-y:auto;overflow-x:hidden;border:1px solid #ddd;border-radius:6px;background:#fff;margin-top:.5rem;z-index:1000;box-shadow:0 4px 6px #0000001a}.suggestion-item{display:flex;align-items:center;gap:1rem;padding:1rem;background:none;border:none;text-align:left;cursor:pointer;transition:all .2s;min-width:0;border-bottom:1px solid #f0f0f0}.suggestion-item:last-child{border-bottom:none}.suggestion-item:hover,.suggestion-item.selected{background:#f5f5f5}.suggestion-item:disabled{opacity:.6;cursor:not-allowed}.suggestion-characters{font-size:1.25rem;font-weight:600;color:#1a1a1a;min-width:50px}.suggestion-pinyin{color:#666;font-style:italic;font-size:.9rem;min-width:60px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.suggestion-meaning{flex:1;color:#333;font-size:.9rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.suggestion-item .hsk-badge{display:inline-block;padding:.25rem .5rem;border-radius:4px;font-size:.75rem;font-weight:600;white-space:nowrap;flex-shrink:0}.suggestion-item .hsk-1{background:#c7edcc;color:#0b7285}.suggestion-item .hsk-2{background:#b3e5fc;color:#01579b}.suggestion-item .hsk-3{background:#ffe0b2;color:#e65100}.suggestion-item .hsk-4{background:#ffccbc;color:#bf360c}.suggestion-item .hsk-5{background:#f8bbd0;color:#880e4f}.suggestion-item .hsk-6{background:#e1bee7;color:#4a148c}@media (max-width: 768px){.add-word-modal{max-width:100%}.suggestions-dropdown{max-height:300px}.suggestion-item{padding:.75rem;gap:.75rem}.suggestion-characters{font-size:1.1rem;min-width:40px}.suggestion-meaning{font-size:.85rem;white-space:nowrap}}.deck-dashboard{display:flex;flex-direction:column;gap:1.5rem;padding:1.5rem;max-width:1200px;margin:0 auto}.deck-dashboard-header{display:flex;gap:1.5rem;align-items:flex-start}.btn-back{background:#f0f0f0;border:1px solid #ddd;padding:.5rem 1rem;border-radius:6px;cursor:pointer;font-size:.9rem;color:#333;white-space:nowrap;transition:all .2s;flex-shrink:0}.btn-back:hover{background:#e8e8e8;border-color:#999}.deck-title-section{flex:1}.deck-dashboard-header h1{font-size:2rem;color:#1a1a1a;margin-bottom:.25rem}.deck-subtitle{color:#666;font-size:.95rem}.deck-dashboard-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}.stat-card{background:#fff;border-radius:10px;padding:1.5rem;box-shadow:0 2px 8px #00000014;display:flex;align-items:center;gap:1rem}.stat-icon{font-size:2rem}.stat-content{display:flex;flex-direction:column;gap:.25rem}.deck-dashboard-controls{display:flex;gap:1rem}.deck-dashboard-loading,.deck-dashboard-error{padding:2rem;text-align:center;background:#fff;border-radius:10px;box-shadow:0 2px 8px #00000014}.deck-dashboard-error{color:#e74c3c}@media (max-width: 768px){.deck-dashboard{padding:1rem}.deck-dashboard-header{flex-direction:column}.deck-dashboard-header h1{font-size:1.5rem}.deck-dashboard-stats{grid-template-columns:1fr}.deck-dashboard-controls{flex-direction:column}.deck-dashboard-controls button{width:100%}}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:1rem}.modal-content{background:#fff;border-radius:12px;box-shadow:0 10px 40px #0003;max-width:500px;width:100%;max-height:90vh;display:flex;flex-direction:column;animation:slideUp .3s ease-out}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:1.5rem;border-bottom:1px solid #eee}.modal-header h2{font-size:1.5rem;color:#1a1a1a;margin:0}.modal-close{background:none;border:none;font-size:1.5rem;color:#999;cursor:pointer;padding:0;width:32px;height:32px;display:flex;align-items:center;justify-content:center;transition:color .2s}.modal-close:hover{color:#333}.modal-body{flex:1;padding:1.5rem;overflow-y:auto}.modal-actions{display:flex;gap:1rem;padding:1.5rem;border-top:1px solid #eee;justify-content:flex-end}.modal-actions button{flex:1}.create-deck-form{padding:1.5rem;display:flex;flex-direction:column;gap:1.5rem}.form-group{display:flex;flex-direction:column;gap:.5rem}.form-group label{font-weight:500;color:#333;font-size:.95rem}.form-group input,.form-group textarea{padding:.75rem;border:1px solid #ddd;border-radius:6px;font-size:.95rem;font-family:inherit;transition:border-color .2s}.form-group input:focus,.form-group textarea:focus{outline:none;border-color:#007bff;box-shadow:0 0 0 3px #007bff1a}.form-group input:disabled,.form-group textarea:disabled{background:#f5f5f5;cursor:not-allowed}.error-message{padding:.75rem;background:#ffe5e5;color:#c33;border-radius:6px;font-size:.9rem}@media (max-width: 768px){.modal-content{max-width:100%;max-height:95vh}.modal-actions{flex-direction:column-reverse}.modal-actions button{flex:none;width:100%}}.decks-tab{display:flex;flex-direction:column;gap:2rem;padding:1.5rem;max-width:1200px;margin:0 auto}.decks-header{display:flex;justify-content:space-between;align-items:flex-start;gap:2rem;margin-bottom:1rem}.decks-header h2{font-size:1.75rem;color:#1a1a1a;margin-bottom:.25rem}.decks-subtitle{color:#666;font-size:.95rem}.btn-create-deck{white-space:nowrap;flex-shrink:0}.decks-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:4rem 2rem;text-align:center;background:linear-gradient(135deg,#f5f7fa,#f0f4f8);border-radius:12px;border:2px dashed #ddd}.empty-illustration{font-size:4rem;margin-bottom:1rem}.decks-empty h3{font-size:1.5rem;color:#1a1a1a;margin-bottom:.5rem}.decks-empty p{color:#666;margin-bottom:1.5rem;font-size:.95rem}.decks-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:1.5rem}.deck-card{background:#fff;border-radius:12px;padding:1.5rem;box-shadow:0 2px 8px #00000014;transition:all .3s ease;display:flex;flex-direction:column;gap:1rem;cursor:pointer}.deck-card:hover{box-shadow:0 8px 24px #0000001f;transform:translateY(-2px)}.deck-card-header{display:flex;justify-content:space-between;align-items:start;gap:1rem}.deck-card-header h3{font-size:1.25rem;color:#1a1a1a;word-break:break-word;flex:1}.btn-delete{background:none;border:none;color:#999;font-size:1.5rem;cursor:pointer;padding:0;width:24px;height:24px;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:color .2s}.btn-delete:hover{color:#e74c3c}.deck-description{color:#666;font-size:.9rem;line-height:1.4}.deck-stats{display:flex;gap:1.5rem;padding:1rem 0;border-top:1px solid #eee;border-bottom:1px solid #eee}.stat{display:flex;flex-direction:column;gap:.25rem}.stat-value{font-size:1.5rem;font-weight:600;color:#007bff}.stat-label{font-size:.75rem;text-transform:uppercase;color:#999;letter-spacing:.5px}.btn-open-deck{width:100%;padding:.75rem;border-radius:8px;border:none;font-weight:500;transition:all .2s}.decks-tab-loading{padding:2rem;text-align:center;color:#666}.btn-primary{background:#007bff;color:#fff;border:none;padding:.75rem 1.5rem;border-radius:8px;font-weight:500;cursor:pointer;font-size:.95rem;transition:all .2s}.btn-primary:hover:not(:disabled){background:#0056b3;box-shadow:0 4px 12px #007bff4d}.btn-primary:disabled{background:#ccc;cursor:not-allowed}.btn-secondary{background:#f0f0f0;color:#333;border:1px solid #ddd;padding:.75rem 1.5rem;border-radius:8px;font-weight:500;cursor:pointer;font-size:.95rem;transition:all .2s}.btn-secondary:hover:not(:disabled){background:#e8e8e8;border-color:#bbb}.btn-secondary:disabled{opacity:.6;cursor:not-allowed}@media (max-width: 768px){.decks-header{flex-direction:column;align-items:stretch}.btn-create-deck{width:100%}.decks-grid{grid-template-columns:1fr}.decks-empty{padding:3rem 1.5rem}.decks-empty h3{font-size:1.25rem}}@media (max-width: 600px){.decks-tab{padding:1rem;gap:1.5rem}.deck-card{padding:1.25rem}.deck-stats{flex-direction:column;gap:.75rem}}.srs-hub{padding:32px;max-width:1100px;margin:0 auto}.srs-hub-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.srs-badge{display:inline-flex;align-items:center;justify-content:center;padding:4px 12px;border-radius:999px;background:#6f8f612e;color:#5a7450;font-size:12px;letter-spacing:.12em;text-transform:uppercase;font-weight:600;margin-bottom:12px}.srs-hub-subtitle{color:#6b7280;margin-top:8px}.srs-overview{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:32px}.srs-stat-card{background:#fff;border-radius:16px;padding:20px;box-shadow:0 10px 30px #0f172a14;display:flex;flex-direction:column;gap:4px}.srs-stat-card.accent{border:1px solid rgba(111,143,97,.34);box-shadow:0 16px 32px #6f8f6133}.srs-stat-value{font-size:24px;font-weight:600;color:#0f172a}.srs-stat-label{font-size:13px;color:#64748b;text-transform:uppercase;letter-spacing:.08em}.srs-setup{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}.srs-setup-card{background:#fff;border-radius:18px;padding:24px;box-shadow:0 12px 30px #0f172a14}.srs-card-header{display:flex;justify-content:space-between;align-items:flex-start;gap:16px}.srs-form-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:16px;margin-bottom:20px}.srs-form-grid label{display:flex;flex-direction:column;gap:8px;font-size:14px;color:#1f2937}.srs-form-grid select{border-radius:10px;border:1px solid #e2e8f0;padding:10px 12px;font-size:14px}.srs-empty{background:#f8fafc;border-radius:14px;padding:18px;margin-top:16px;display:grid;gap:12px;color:#475569}.srs-start-button{width:100%}.srs-deck-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px;margin-top:16px}.srs-muted{color:#6b7280;margin-top:12px;font-size:14px}.srs-loading,.srs-error{padding:32px;text-align:center}.srs-story-section{margin-top:20px}.srs-story-controls{margin-top:16px;display:grid;gap:12px}.srs-story-controls label{display:grid;gap:8px;font-size:14px}.srs-story-controls textarea{width:100%;border-radius:10px;border:1px solid #e2e8f0;padding:10px 12px;font-size:14px;font-family:inherit}.srs-story-list{margin-top:16px;display:grid;gap:12px}.srs-story-card{border:1px solid #e2e8f0;border-radius:12px;padding:14px;background:#f8fafc}.srs-story-meta{color:#64748b;font-size:12px;margin-bottom:6px}.srs-story-prompt,.srs-story-chinese,.srs-story-translation{margin:8px 0}.srs-story-actions{margin-top:8px;display:grid;gap:10px}.srs-error-text{color:#b91c1c;margin-top:8px}@media (max-width: 768px){.srs-hub{padding:24px}}@media (max-width: 600px){.srs-hub{padding:16px}.srs-hub-header{flex-direction:column;align-items:flex-start;gap:12px}.srs-overview,.srs-setup{grid-template-columns:1fr}}.srs-session{padding:32px;max-width:900px;margin:0 auto}.srs-session-header{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:24px}.srs-progress{font-size:14px;color:#64748b;display:flex;flex-direction:column;align-items:flex-end;gap:8px}.srs-card{background:#fff;border-radius:20px;padding:32px;min-height:280px;box-shadow:0 14px 40px #0f172a1f;display:grid;place-items:center;text-align:center;position:relative;margin-bottom:24px}.srs-card-meta{position:absolute;top:20px;left:20px;display:flex;gap:8px;flex-wrap:wrap}.srs-card-pill{background:#6f8f612e;color:#5a7450;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;padding:4px 10px;border-radius:999px}.srs-card-pill.subtle{background:#0f172a14;color:#475569}.srs-card-face{width:100%}.srs-card-back,.srs-card.show-answer .srs-card-front{display:none}.srs-card.show-answer .srs-card-back{display:block}.srs-chinese{font-size:48px;font-weight:600;color:#0f172a}.srs-pinyin{font-size:20px;color:#475569;margin-top:12px}.srs-chinese-block{display:flex;flex-direction:column;align-items:center}.srs-english{font-size:22px;color:#1f2937;line-height:1.4}.srs-controls{display:flex;justify-content:center}.srs-reveal{display:grid;gap:8px;text-align:center}.srs-rating-buttons{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}.srs-rating-buttons button{display:inline-flex;flex-direction:column;gap:4px;min-width:110px}.srs-rating-buttons span{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:inherit;opacity:.7}.srs-empty-state{background:#fff;border-radius:20px;padding:32px;box-shadow:0 14px 40px #0f172a14;display:grid;gap:16px}.srs-empty-actions{display:flex;gap:12px;flex-wrap:wrap}@media (max-width: 768px){.srs-session,.srs-card{padding:24px}.srs-chinese{font-size:40px}}@media (max-width: 600px){.srs-session{padding:16px}.srs-session-header{flex-direction:column;align-items:flex-start}.srs-card{padding:20px;min-height:220px}.srs-card-meta{position:static;justify-content:center;margin-bottom:12px}.srs-chinese{font-size:34px}.srs-pinyin,.srs-english{font-size:18px}.srs-controls,.srs-reveal,.srs-reveal button,.srs-rating-buttons{width:100%}.srs-rating-buttons button{flex:1 1 calc(50% - 12px);min-width:140px}.srs-empty-actions{flex-direction:column}.srs-empty-actions button{width:100%}}.timeline-page{max-width:980px;margin:0 auto;padding:2rem 1.25rem 3rem}.timeline-page-header{display:flex;justify-content:space-between;align-items:center;gap:1rem;margin-bottom:1rem}.timeline-subtitle{color:#6b7280;margin-top:.2rem}.timeline-editor-card,.timeline-lesson-card{background:#fff;border:1px solid #e5e7eb;border-radius:16px;padding:1.1rem;box-shadow:0 6px 18px #0f172a0a}.timeline-editor-card{margin-bottom:1rem}.timeline-editor-head{display:flex;justify-content:space-between;align-items:center;gap:.75rem;margin-bottom:.75rem}.timeline-form,.timeline-list-section{display:grid;gap:.75rem}.timeline-form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:.75rem}.timeline-form label{display:grid;gap:.35rem;font-size:.92rem;color:#374151}.timeline-form input,.timeline-form textarea,.timeline-form select,.timeline-search{border:1px solid #d1d5db;border-radius:10px;padding:.6rem .75rem;font:inherit}.timeline-form textarea{resize:vertical}.timeline-word-results,.timeline-word-list{display:flex;flex-wrap:wrap;gap:.45rem}.timeline-word-results button{border:1px solid #c7d9bf;background:#eef6e9;color:#4f6f42;border-radius:999px;padding:.3rem .7rem;cursor:pointer}.timeline-word-chip{background:#e8f1df;color:#4f6a44;border-radius:999px;padding:.28rem .7rem;font-size:.86rem;display:inline-flex;align-items:center;gap:.35rem}.timeline-word-chip button{border:none;background:transparent;color:#5a7450;cursor:pointer;font-weight:700}.timeline-actions{display:flex;justify-content:flex-start}.timeline-list-header,.timeline-lesson-top,.timeline-item-actions{display:flex;align-items:center;gap:.65rem}.timeline-list-header,.timeline-lesson-top{justify-content:space-between}.timeline-search{max-width:340px;width:100%}.timeline-list{display:grid;gap:.85rem}.timeline-meta{color:#6b7280;font-size:.9rem}.timeline-description{margin:.65rem 0;white-space:pre-line;line-height:1.45}.timeline-item-button{border:1px solid #d1d5db;background:#fff;color:#1f2937;border-radius:999px;padding:.42rem .85rem;font-size:.88rem;cursor:pointer}.timeline-item-button:hover{background:#f9fafb}.timeline-item-button-danger{border-color:#fecaca;background:#fef2f2;color:#b91c1c}.timeline-word-link{border:1px solid #c7d9bf;background:#eef6e9;color:#1e40af;border-radius:999px;padding:.25rem .7rem;font-size:.86rem;cursor:pointer}.timeline-word-link:hover{background:#dbeafe}.timeline-error{margin:0;color:#b91c1c}@media (max-width: 720px){.timeline-page-header,.timeline-list-header,.timeline-lesson-top{flex-direction:column;align-items:flex-start}.timeline-search{max-width:none}}*{margin:0;padding:0;box-sizing:border-box}:root{color-scheme:light;--bg: #f6f1e6;--bg-alt: #efe6d4;--surface: #fffdf8;--surface-alt: #f7f1e4;--border: #ddcfb6;--text-primary: #2f261b;--text-muted: #6f6555;--text-soft: #9b8f79;--primary: #6f8f61;--primary-dark: #5a7450;--primary-soft: rgba(111, 143, 97, .15);--accent: #b36a45;--success: #2d8f68;--warning: #b9823f;--shadow-sm: 0 4px 12px rgba(63, 38, 13, .08);--shadow-md: 0 16px 36px rgba(63, 38, 13, .14)}html,body,#root{min-height:100%}#root{min-height:100vh}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:radial-gradient(circle at top,#fffefb,#f6f1e6 42%,#efe6d4);background-attachment:fixed;color:var(--text-primary);margin:0;padding:0}.dashboard{width:100%;display:flex;flex-direction:column;padding:2.5rem 2.5rem 3rem;gap:2rem;max-width:1200px;margin:0 auto;overflow:hidden}.dashboard-quick-actions{display:flex;gap:.75rem;flex-wrap:wrap}.dashboard-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem;flex-shrink:0}.dashboard-header h1{font-size:2rem;color:#1a1a1a}.dashboard-hero{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:2rem;align-items:center}.hero-eyebrow{font-size:.85rem;text-transform:uppercase;letter-spacing:.2em;color:var(--text-muted);font-weight:600}.hero-title{font-size:2.6rem;line-height:1.1;margin:.6rem 0 .5rem}.hero-subtitle{font-size:1rem;color:var(--text-muted);max-width:520px}.hero-actions{display:flex;gap:.75rem;margin-top:1.5rem;flex-wrap:wrap}.hero-card{background:var(--surface);border-radius:18px;padding:1.5rem;border:1px solid var(--border);box-shadow:var(--shadow-md);display:grid;gap:1.25rem}.hero-stat{display:flex;flex-direction:column;gap:.35rem;padding-bottom:1rem;border-bottom:1px solid var(--border)}.hero-stat:last-child{border-bottom:none;padding-bottom:0}.hero-stat-label{font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--text-soft);font-weight:600}.hero-stat-value{font-size:1.4rem;font-weight:600}.hero-stat-sub{font-size:.85rem;color:var(--text-muted)}.dashboard-layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:2rem;align-items:start}.dashboard-main,.dashboard-aside{display:flex;flex-direction:column;gap:1.5rem}.panel-card{background:var(--surface);border-radius:20px;border:1px solid var(--border);box-shadow:var(--shadow-sm);padding:1.5rem}.aside-card{background:var(--surface);border-radius:16px;border:1px solid var(--border);box-shadow:var(--shadow-sm);padding:1.25rem}.aside-card h3{font-size:1rem;margin-bottom:.75rem;color:var(--text-primary)}.focus-list{display:grid;gap:.6rem;color:var(--text-muted);font-size:.9rem}.focus-list span{display:flex;align-items:center;gap:.5rem}.dashboard-content{display:flex;flex-direction:column;gap:0;flex:1;min-height:0}.main-panel{display:flex;flex-direction:column;gap:1rem;flex-shrink:0;padding:1rem;border:1px solid rgba(111,143,97,.3);background:linear-gradient(180deg,#fffdf8fa,#f7f1e4f2);margin-bottom:0}.result-panel{display:flex;flex-direction:column;gap:.75rem}.stats-section{background:#fff;padding:1.5rem;border-radius:8px;box-shadow:0 2px 4px #0000001a;flex-shrink:0}.workspace-stats h2{font-size:1.35rem;margin-bottom:1rem}.workspace-stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:.75rem}.workspace-stats-grid article{border:1px solid var(--border);background:var(--surface-alt);border-radius:14px;padding:.9rem;display:grid;gap:.35rem}.workspace-stats-grid span{color:var(--text-soft);font-size:.74rem;text-transform:uppercase;letter-spacing:.08em;font-weight:600}.workspace-stats-grid strong{font-size:1.55rem;color:var(--text-primary);line-height:1.2}.word-input-form{flex-shrink:0}.input-group{display:flex;gap:.5rem;margin-bottom:.5rem}.btn-primary,.lookup-button{padding:.8rem 1.5rem;background:var(--primary);color:#fff;border:none;border-radius:999px;font-size:.95rem;cursor:pointer;font-weight:600;transition:transform .2s ease,box-shadow .2s ease,background .2s ease;box-shadow:0 8px 20px #6f8f6147}.btn-primary:hover:not(:disabled),.lookup-button:hover:not(:disabled){background:var(--primary-dark);transform:translateY(-1px)}.btn-primary:disabled,.lookup-button:disabled{background:#c4d2bc;cursor:not-allowed;box-shadow:none}.btn-secondary{padding:.7rem 1.3rem;border-radius:999px;border:1px solid var(--border);background:var(--surface);color:var(--text-primary);font-weight:600;cursor:pointer;transition:border .2s ease,box-shadow .2s ease,color .2s ease,transform .2s ease}.btn-secondary:hover{border-color:var(--primary);color:var(--primary-dark);box-shadow:0 8px 16px #3f260d1f;transform:translateY(-1px)}.btn-ghost{background:transparent;border:1px solid var(--border);color:var(--text-muted);padding:.6rem 1rem;border-radius:10px;cursor:pointer}.lookup-button{font-size:.95rem}.loading-status{font-weight:500;color:var(--primary)}.word-result,.word-result-placeholder{background:var(--surface);padding:1.25rem;border-radius:16px;box-shadow:var(--shadow-sm);border:1px solid var(--border)}.word-header{margin-bottom:.5rem;padding-bottom:.4rem;border-bottom:1px solid var(--border)}.word-title-row{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap}.word-characters{font-size:3.75rem;margin:0;color:var(--text-primary);line-height:1.2}.word-emoji{font-size:1.4rem;line-height:1}.pinyin{font-size:.9rem;color:var(--text-muted);font-weight:500}.hsk-level{background:var(--primary-soft);color:var(--primary);padding:.25rem .6rem;border-radius:999px;font-size:.8rem;font-weight:600;flex-shrink:0}.part-of-speech-inline{background:var(--surface-alt);color:var(--text-muted);padding:.25rem .6rem;border-radius:999px;font-size:.8rem;text-transform:lowercase}.play-audio-button{border:none;background:var(--surface-alt);color:var(--primary);border-radius:999px;padding:.3rem .55rem;cursor:pointer;font-size:.9rem;transition:transform .2s ease,box-shadow .2s ease}.play-audio-button:disabled{color:var(--text-soft);cursor:not-allowed}.play-audio-button:hover:not(:disabled){transform:translateY(-1px);box-shadow:var(--shadow-sm)}.word-content-grid{display:grid;grid-template-columns:1fr 1fr;gap:.75rem;align-items:start}@media (max-width: 1120px){.header-subtitle,.header-user,.header-upgrade-button{display:none}.header-brand,.header-actions{min-width:auto}}@media (max-width: 768px){.word-content-grid{grid-template-columns:1fr;gap:.5rem}}.word-column-left,.word-column-right{display:flex;flex-direction:column;gap:.5rem}.word-section{display:flex;flex-direction:column;gap:.35rem}.section-label{font-size:.75rem;font-weight:600;color:var(--text-soft);text-transform:uppercase;letter-spacing:.3px;margin:0}.meanings-section .meanings-list{display:flex;flex-wrap:wrap;gap:.35rem}.meaning-badge{background:#6f8f6126;color:var(--primary);padding:.35rem .75rem;border-radius:999px;font-size:.85rem;display:inline-block;font-weight:500;line-height:1.3}.badge-list{display:flex;flex-wrap:wrap;gap:.3rem}.badge{background:var(--surface-alt);color:var(--text-muted);padding:.35rem .65rem;border-radius:999px;font-size:.8rem;display:inline-block;line-height:1.3}.example-sentences-list{display:flex;flex-direction:column;gap:.5rem}.example-sentence-item{padding:.75rem;background:var(--surface-alt);border-left:3px solid var(--primary);border-radius:10px}.example-original{font-size:.9rem;color:var(--text-primary);margin:0 0 .25rem;line-height:1.4}.example-translation{font-size:.85rem;color:var(--text-muted);margin:0;line-height:1.3;font-style:italic}.special-note-text{padding:.6rem .75rem;background:#f59e0b1f;border-left:3px solid var(--warning);border-radius:10px;font-size:.85rem;color:var(--text-muted);line-height:1.4;margin:0}.show-more-note-button{display:inline-flex;margin-left:.5rem;border:none;background:transparent;color:var(--primary-dark);cursor:pointer;font-weight:600;font-size:.8rem;text-decoration:underline}.show-more-note-button:hover{color:var(--primary)}.learning-mode-toggle{margin:.5rem 0;font-size:.9rem;color:#444}.learning-mode-toggle label{display:inline-flex;align-items:center;gap:.4rem}.quick-add-row{margin-top:.4rem;display:flex;align-items:center;gap:.4rem;flex-wrap:wrap}.quick-add-deck-select{min-width:200px;padding:.45rem .6rem;border:1px solid var(--border);border-radius:10px;background:var(--surface);color:var(--text-primary)}.quick-add-deck-button{padding:.35rem .6rem;font-size:.85rem}.quick-add-message{font-size:.8rem;color:var(--text-muted)}.reveal-translation-btn{margin-bottom:.35rem;font-size:.75rem;padding:.25rem .6rem}.lookup-meta{display:flex;align-items:center;gap:.35rem;margin-top:.25rem;padding-top:.25rem;border-top:1px solid var(--border);font-size:.75rem;color:var(--text-muted);grid-column:1 / -1;flex-wrap:nowrap}.character-breakdown{background:var(--surface);padding:1rem 1.25rem;border-radius:16px;box-shadow:var(--shadow-sm);border:1px solid var(--border);display:grid;gap:.75rem;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.character-breakdown-header{display:flex;align-items:center;justify-content:space-between;gap:.5rem;grid-column:1 / -1}.character-breakdown h2{font-size:1.1rem;margin-bottom:.5rem;color:var(--text-primary);grid-column:1 / -1}.character-item{padding:.5rem;border:1px solid var(--border);border-radius:12px;background:var(--surface-alt);min-width:200px}.character-header{display:flex;gap:.5rem;align-items:center;margin-bottom:.4rem;flex-wrap:wrap}.character-char{font-size:2rem;font-weight:700}.character-pinyin{font-size:.9rem;color:var(--text-muted)}.character-meaning{padding-left:10px;font-size:.9rem;color:var(--text-muted)}.character-header .hsk-level{flex-basis:100%;margin-left:0}.character-decomposition{margin-bottom:.4rem;font-size:.8rem}.character-decomposition strong{font-size:.85rem;display:block;margin-bottom:.2rem}.character-decomposition ul{list-style:none;padding-left:.5rem;margin-top:.2rem;margin-bottom:0}.character-decomposition li{padding:.1rem 0;font-size:.8rem}.component-char{font-weight:500;color:var(--primary);font-size:1.3rem}.component-meaning{color:var(--text-muted)}.component-position{color:var(--text-soft);font-size:.9rem}.character-semantics{margin-top:.4rem;line-height:1.3;color:var(--text-muted);font-size:.8rem}.character-semantics strong{font-size:.85rem;display:block;margin-bottom:.2rem}.related-words{margin-top:.75rem;padding-top:.75rem;border-top:1px solid var(--border);grid-column:1 / -1}.related-words h3{margin-bottom:1rem;color:var(--text-primary);font-size:1.2rem}.related-words-list{display:flex;flex-wrap:wrap;gap:.75rem}.related-word-item{display:flex;flex-direction:column;align-items:center;gap:.25rem;padding:.75rem 1rem;background:var(--surface-alt);border:1px solid var(--border);border-radius:12px;cursor:pointer;transition:all .2s;min-width:80px}.related-word-item:hover{background:var(--surface);border-color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-sm)}.related-word-characters{font-size:1.2rem;font-weight:500;color:var(--text-primary)}.character-breakdown-placeholder{background:#fff;padding:.75rem 1rem;border-radius:6px;box-shadow:0 1px 3px #0000001a;border:1px solid #e9ecef;display:grid;gap:.75rem}.character-breakdown-placeholder h2{font-size:1.1rem;margin-bottom:.5rem;color:#1a1a1a;grid-column:1 / -1}.character-placeholders{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:.75rem;grid-column:1 / -1}.character-item-placeholder{padding:.5rem;border:1px solid #e9ecef;border-radius:4px;background:#fafafa;min-height:150px}.loading-skeleton{display:inline-block;background:linear-gradient(90deg,#f0f0f0 25%,#e0e0e0,#f0f0f0 75%);background-size:200% 100%;animation:loading 1.5s ease-in-out infinite;border-radius:4px;color:transparent;min-width:60px;min-height:1em}.word-result-placeholder .loading-skeleton{display:inline-block;min-width:80px}.word-result-placeholder .word-characters .loading-skeleton{min-width:120px;min-height:2rem}.word-result-placeholder .pinyin .loading-skeleton{min-width:100px}.word-result-placeholder .usage-explanation p .loading-skeleton{display:block;width:100%;min-height:1.2em;margin-bottom:.5rem}@keyframes loading{0%{background-position:200% 0}to{background-position:-200% 0}}.loading-indicator{grid-column:1 / -1;text-align:center;padding:1rem;color:#666;font-size:.9rem}.timing-info,.timing-info-placeholder{display:flex;gap:1rem;align-items:center;padding:.5rem .75rem;background:#f8f9fa;border-radius:4px;font-size:.85rem;color:#666;margin-top:.5rem;min-height:2rem}.timing-info .word-timing{color:#999;font-size:.8rem}.timing-info-placeholder .loading-skeleton{width:200px;height:1rem}.stats{background:var(--surface);padding:1.5rem;border-radius:16px;border:1px solid var(--border);box-shadow:var(--shadow-sm)}.stats-header{display:flex;justify-content:space-between;align-items:center;width:100%;background:none;border:none;padding:0;cursor:pointer;text-align:left}.stats-header:hover{opacity:.8}.stats h2{font-size:1.5rem;margin:0;color:var(--text-primary)}.stats-toggle-icon{font-size:.8rem;color:var(--text-muted);margin-left:1rem}.stats-content{margin-top:1.5rem}.stat-item{margin-bottom:1.5rem}.stat-item strong{display:block;margin-bottom:.5rem;color:var(--text-primary)}.hsk-breakdown{list-style:none;padding-left:0}.hsk-breakdown li{padding:.25rem 0;color:var(--text-muted)}.character-list,.root-list{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:.5rem}.character-tag,.root-tag{background:var(--surface-alt);padding:.4rem .8rem;border-radius:999px;font-size:.9rem}.vocabulary-page{max-width:1200px;margin:0 auto;padding:2rem}.page-header{display:flex;align-items:center;gap:1rem;margin-bottom:2rem}.page-subtitle{margin-top:.35rem;font-size:.95rem;color:var(--text-muted)}.back-button{padding:.5rem 1rem;background:#6c757d;color:#fff;border:none;border-radius:4px;cursor:pointer;text-decoration:none}.back-button:hover{background:#5a6268}.history{background:var(--surface);padding:2rem;border-radius:18px;border:1px solid var(--border);box-shadow:var(--shadow-sm)}.history-controls{display:flex;gap:1rem;margin-bottom:2rem;flex-wrap:wrap}.sort-controls,.filter-controls{display:flex;align-items:center;gap:.5rem}.sort-controls label,.filter-controls label{font-size:.9rem;color:var(--text-muted)}.sort-controls select,.filter-controls select,.filter-controls input{padding:.5rem;border:1px solid var(--border);border-radius:10px;font-size:.9rem}.history-list{display:grid;gap:1rem}.history-item{padding:1rem;border:1px solid var(--border);border-radius:12px;cursor:pointer;transition:background .2s}.history-item:hover{background:var(--surface-alt)}.history-word{display:flex;gap:1rem;align-items:center;margin-bottom:.5rem}.history-characters{font-size:1.5rem;font-weight:500}.history-pinyin{color:var(--text-muted)}.history-hsk{background:var(--success);color:#fff;padding:.2rem .6rem;border-radius:999px;font-size:.8rem}.history-meta{display:flex;gap:1rem;font-size:.85rem;color:var(--text-muted)}.history-empty,.history-loading{text-align:center;padding:3rem;color:var(--text-muted)}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:radial-gradient(circle at top,#fff,#eef1f8 65%,#e2e8f0);padding:2rem}.login-card{background:var(--surface);padding:3rem 2.75rem;border-radius:18px;border:1px solid var(--border);box-shadow:var(--shadow-md);width:100%;max-width:400px}.login-logo{width:96px;height:96px;display:block;margin:0 auto 1.5rem;object-fit:contain}.login-card h1{text-align:center;margin-bottom:2rem;color:var(--text-primary)}.login-subtitle{text-align:center;margin:-1.25rem auto 2rem;font-size:.95rem;color:var(--text-muted)}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:.5rem;color:var(--text-muted);font-weight:500}.form-group input{width:100%;padding:.75rem;border:1px solid var(--border);border-radius:10px;font-size:1rem;outline:none}.form-group input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}.submit-button{width:100%;padding:.75rem;background:var(--primary);color:#fff;border:none;border-radius:999px;font-size:1rem;font-weight:500;cursor:pointer;margin-bottom:1rem}.submit-button:hover:not(:disabled){background:var(--primary-dark)}.submit-button:disabled{background:#c4d2bc;cursor:not-allowed}.toggle-button{width:100%;background:none;border:none;color:var(--primary);cursor:pointer;text-decoration:underline;font-size:.9rem}.toggle-button:hover{color:var(--primary-dark)}.login-note{margin-top:1.5rem;text-align:center;font-size:.8rem;color:var(--text-soft)}.error-message{background:#fee2e2;color:#b91c1c;padding:.75rem;border-radius:10px;margin-bottom:1rem;font-size:.9rem}.loading-message,.loading-screen{text-align:center;padding:2rem;color:var(--text-muted)}.app-loading-shell{min-height:100vh;padding:1rem 2.5rem 2rem;display:grid;gap:1.25rem}.app-loading-header{height:64px;border-radius:16px;border:1px solid var(--border);background:linear-gradient(90deg,#ddcfb633,#ddcfb680,#ddcfb633);background-size:200% 100%;animation:loading 1.5s ease-in-out infinite}.app-loading-content{display:grid;gap:1rem}.app-loading-card{height:180px;border-radius:18px;border:1px solid var(--border);background:linear-gradient(90deg,#ddcfb62e,#ddcfb666,#ddcfb62e);background-size:200% 100%;animation:loading 1.5s ease-in-out infinite}.app-loading-card-tall{height:280px}.page-loading-skeleton{max-width:1100px;margin:2rem auto;padding:0 2.5rem;display:grid;gap:.9rem}.skeleton-line{height:16px;border-radius:999px;background:linear-gradient(90deg,#ddcfb633,#ddcfb680,#ddcfb633);background-size:200% 100%;animation:loading 1.5s ease-in-out infinite}.skeleton-line-title{width:min(320px,70%);height:26px}.skeleton-line-subtitle{width:min(500px,90%)}.skeleton-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:.75rem}.skeleton-card{height:110px;border-radius:14px;border:1px solid var(--border);background:linear-gradient(90deg,#ddcfb62e,#ddcfb666,#ddcfb62e);background-size:200% 100%;animation:loading 1.5s ease-in-out infinite}.skeleton-card-wide{height:200px}.recent-searches{background:linear-gradient(180deg,#fffdf8fa,#f7f1e4eb);padding:1.25rem;border-radius:16px;border:1px solid var(--border);box-shadow:var(--shadow-sm);flex-shrink:0}.recent-searches h3{font-size:.95rem;margin-bottom:.75rem;color:var(--text-primary);font-weight:600}.recent-searches-list{display:flex;flex-wrap:wrap;gap:.5rem}.recent-searches-skeleton-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.5rem}.recent-search-skeleton-item{height:56px;border-radius:12px;border:1px solid var(--border);background:linear-gradient(90deg,#ddcfb633,#ddcfb680,#ddcfb633);background-size:200% 100%;animation:loading 1.4s ease-in-out infinite}.recent-search-item-wrapper{position:relative;display:flex;align-items:center;gap:.25rem}.recent-search-item{display:flex;flex-direction:column;align-items:center;gap:.2rem;padding:.5rem .75rem;background:var(--surface-alt);border:1px solid var(--border);border-radius:12px;cursor:pointer;transition:all .2s;min-width:70px}.recent-search-item:hover{background:var(--surface);border-color:var(--primary);transform:translateY(-1px);box-shadow:var(--shadow-sm)}.recent-search-characters{font-size:1rem;font-weight:500;color:var(--text-primary)}.recent-search-pinyin{font-size:.75rem;color:var(--text-muted)}.recent-searches-loading,.recent-searches-empty{text-align:center;padding:1rem;color:var(--text-muted);font-size:.9rem}.app-header{background:#f7f1e4eb;border-bottom:1px solid rgba(186,164,132,.45);padding:1rem 2.5rem;flex-shrink:0;position:sticky;top:0;z-index:10;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.header-content{display:flex;justify-content:space-between;align-items:center;max-width:1200px;margin:0 auto;gap:1.5rem}.header-brand{display:flex;align-items:center;gap:.75rem;cursor:pointer;min-width:220px}.header-logo{width:44px;height:44px;object-fit:contain;border-radius:10px;background:transparent;padding:0;flex-shrink:0;filter:drop-shadow(0 6px 10px rgba(15,23,42,.18))}.header-brand-text{display:flex;flex-direction:column;gap:.2rem}.header-title{font-size:1.3rem;color:var(--text-primary);margin:0;font-weight:700}.header-subtitle{font-size:.75rem;color:var(--text-muted);letter-spacing:.1em;text-transform:uppercase}.header-nav{display:flex;gap:.4rem;flex:1;justify-content:center;min-width:0}.header-menu-toggle{display:none;padding:.5rem .75rem;border-radius:999px;border:1px solid var(--border);background:var(--surface);color:var(--text-primary);font-weight:600;cursor:pointer}.header-menu-toggle:hover{background:var(--surface-alt)}.header-nav-button{padding:.45rem .8rem;background:#fffdf8cc;border:1px solid transparent;border-radius:999px;cursor:pointer;font-size:.9rem;color:var(--text-muted);transition:all .2s;font-weight:500;white-space:nowrap}.header-nav-button:hover{background:var(--surface-alt);color:var(--primary);border-color:var(--border)}.header-nav-button.active{background:var(--primary);color:#fff;border-color:var(--primary)}.header-nav-button.active:hover{background:var(--primary-dark);border-color:var(--primary-dark)}.header-actions{display:flex;gap:.75rem;align-items:center;justify-content:end;min-width:220px}.header-nav-logout{display:none}.header-upgrade-button{background:var(--primary);color:#fff;border:none;padding:.5rem 1rem;border-radius:999px;font-size:.85rem;font-weight:600;cursor:pointer;box-shadow:0 8px 18px #6f8f613d}.header-upgrade-button:disabled{background:#c4d2bc;cursor:not-allowed;box-shadow:none}.header-user{display:flex;flex-direction:column;align-items:flex-end;gap:.2rem;font-size:.8rem;color:var(--text-muted)}.header-user-email{font-weight:600;color:var(--text-primary)}.header-logout-button{background:#fee2e2;color:#b91c1c;border:none;padding:.5rem 1rem;border-radius:999px;cursor:pointer;font-size:.9rem;transition:background-color .2s}.header-logout-button:hover{background-color:#fecaca}.settings-page{width:100%;min-height:calc(100vh - 72px);display:flex;flex-direction:column;padding:2.5rem;overflow-y:auto;background:transparent}.settings-container{max-width:860px;margin:0 auto;width:100%;background:var(--surface);border-radius:18px;padding:2rem;border:1px solid var(--border);box-shadow:var(--shadow-md)}.settings-page-skeleton .settings-container{display:grid;gap:1rem}.settings-skeleton-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:.75rem}.settings-skeleton-card{height:96px;border-radius:12px;border:1px solid var(--border);background:linear-gradient(90deg,#ddcfb633,#ddcfb673,#ddcfb633);background-size:200% 100%;animation:loading 1.4s ease-in-out infinite}.settings-skeleton-block{height:180px;border-radius:12px;border:1px solid var(--border);background:linear-gradient(90deg,#ddcfb633,#ddcfb673,#ddcfb633);background-size:200% 100%;animation:loading 1.4s ease-in-out infinite}.settings-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}.settings-container h1{font-size:2rem;color:var(--text-primary);margin:0}.back-to-app-button{background:#6c757d;color:#fff;border:none;padding:.5rem 1rem;border-radius:4px;cursor:pointer;font-size:.9rem;transition:background-color .2s}.back-to-app-button:hover{background:#5a6268}.settings-section{margin-bottom:2.5rem;padding-bottom:2rem;border-bottom:1px solid var(--border)}.settings-section:last-child{border-bottom:none}.settings-section h2{font-size:1.25rem;color:var(--text-primary);margin-bottom:1.5rem}.settings-section h3{font-size:1rem;color:var(--text-primary);margin:0}.settings-field{margin-bottom:1.5rem}.settings-field label{display:block;font-size:.9rem;font-weight:500;color:var(--text-muted);margin-bottom:.5rem}.settings-toggle{display:flex;align-items:flex-start;gap:.75rem;font-size:.95rem;color:var(--text-primary);line-height:1.4}.settings-toggle input{margin-top:.2rem;width:18px;height:18px}.btn-compact{padding:.35rem .6rem;font-size:.8rem}.settings-value{font-size:1rem;color:var(--text-primary);padding:.5rem 0}.settings-stats-grid{display:grid;gap:.85rem;grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}.settings-stat-card{background:linear-gradient(180deg,#2563eb14,#6366f10f);border:1px solid rgba(37,99,235,.16);border-radius:12px;padding:.9rem 1rem;display:flex;flex-direction:column;gap:.3rem}.settings-stat-label{font-size:.82rem;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted)}.settings-stat-card strong{font-size:1.15rem;color:var(--text-primary)}.settings-hsk-breakdown{margin-top:1.25rem;border:1px solid var(--border);border-radius:12px;padding:1rem;background:#0f172a05}.settings-hsk-breakdown ul{margin:.85rem 0 0;padding:0;list-style:none;display:grid;gap:.45rem}.settings-hsk-breakdown li{display:flex;justify-content:space-between;align-items:center;padding:.45rem .6rem;border-radius:8px;background:#fffc;border:1px solid var(--border)}.settings-muted{margin-top:.8rem;color:var(--text-muted);font-size:.9rem}.danger-section{border-color:#dc3545}.danger-warning{background:#fee2e2;border:1px solid #fecaca;border-radius:12px;padding:1rem;margin-bottom:1.5rem}.danger-warning p{margin:.5rem 0;color:#991b1b;font-size:.9rem}.danger-warning p:first-child{margin-top:0}.danger-warning p:last-child{margin-bottom:0}.delete-account-form{display:flex;flex-direction:column;gap:1rem}.delete-account-form label{font-size:.9rem;font-weight:500;color:#1a1a1a}.delete-account-form input{padding:.75rem;border:1px solid var(--border);border-radius:10px;font-size:1rem;max-width:300px}.delete-account-form input:disabled{background:#f5f5f5;cursor:not-allowed}.delete-button{background:#ef4444;color:#fff;border:none;padding:.75rem 1.5rem;border-radius:999px;cursor:pointer;font-size:1rem;font-weight:500;max-width:200px;transition:background-color .2s}.delete-button:hover:not(:disabled){background:#dc2626}.delete-button:disabled{background:#ccc;cursor:not-allowed}.words-page{width:100%;display:flex;flex-direction:column;padding:2.5rem;max-width:1200px;margin:0 auto}.words-page .page-header{display:flex;align-items:center;gap:1rem;margin-bottom:1.5rem;flex-shrink:0}.words-page .page-header h1{font-size:2rem;color:var(--text-primary);margin:0}.back-button{padding:.5rem 1rem;background:#f8f9fa;border:1px solid #dee2e6;border-radius:4px;cursor:pointer;font-size:.9rem;color:#495057;transition:all .2s}.back-button:hover{background:#e9ecef;border-color:#adb5bd}.words-tabs{display:flex;gap:.5rem;margin-bottom:1.5rem;border-bottom:1px solid var(--border);flex-shrink:0}.words-tab-button{padding:.75rem 1.5rem;background:transparent;border:none;border-bottom:2px solid transparent;cursor:pointer;font-size:1rem;color:var(--text-muted);font-weight:500;transition:all .2s;margin-bottom:-2px}.words-tab-button:hover{color:var(--primary)}.words-tab-button.active{color:var(--primary);border-bottom-color:var(--primary)}.words-tab-content{flex:1;overflow-y:auto;min-height:0}.words-tab{width:100%;display:flex;flex-direction:column;height:100%}.words-tab-controls{display:flex;gap:1rem;margin-bottom:1.5rem;align-items:center;flex-wrap:wrap;flex-shrink:0}.words-tab-table-wrapper{flex:1;overflow-y:auto;min-height:0;margin-bottom:1rem}.filter-control{display:flex;align-items:center;gap:.5rem}.filter-control label{font-size:.9rem;font-weight:500;color:var(--text-muted)}.filter-control select{padding:.5rem;border:1px solid var(--border);border-radius:10px;font-size:.9rem;background:var(--surface);cursor:pointer}.sort-controls{display:flex;align-items:center;gap:.5rem}.sort-controls label{font-size:.9rem;font-weight:500;color:var(--text-muted)}.sort-controls select{padding:.5rem;border:1px solid var(--border);border-radius:10px;font-size:.9rem;background:var(--surface);cursor:pointer}.filter-info{font-size:.9rem;color:var(--text-muted);margin-left:auto}.words-tab-loading,.words-tab-empty{text-align:center;padding:3rem;color:var(--text-muted);font-size:1rem}.words-table{width:100%;border-collapse:collapse;background:var(--surface);border-radius:16px;overflow:hidden;box-shadow:var(--shadow-sm);border:1px solid var(--border)}.words-table thead{background:var(--surface-alt)}.words-table th{padding:.75rem;text-align:left;font-weight:600;font-size:.85rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid var(--border)}.words-table tbody tr{border-bottom:1px solid var(--border);cursor:pointer;transition:background-color .15s}.words-table tbody tr:hover{background:var(--surface-alt)}.words-table tbody tr:last-child{border-bottom:none}.words-table-cell-characters{font-size:1.2rem;font-weight:500;color:var(--text-primary);padding:.75rem}.words-table-cell-pinyin{font-size:.9rem;color:var(--text-muted);padding:.75rem}.words-table-cell-meanings{font-size:.9rem;color:var(--text-muted);padding:.75rem;max-width:300px}.words-table-cell-hsk{font-size:.85rem;color:var(--primary);font-weight:500;padding:.75rem}.words-table-cell-topics{font-size:.85rem;color:var(--text-muted);padding:.75rem;max-width:200px}.words-table-cell-date{font-size:.85rem;color:var(--text-muted);padding:.75rem}.words-table-cell-actions{padding:.75rem;text-align:center}.words-tab-pagination{display:flex;justify-content:center;align-items:center;gap:1rem;margin-top:1.5rem;padding:1rem}.words-tab-pagination button{padding:.5rem 1rem;background:var(--primary);color:#fff;border:none;border-radius:999px;cursor:pointer;font-size:.9rem;transition:background-color .2s}.words-tab-pagination button:hover:not(:disabled){background:var(--primary-dark)}.words-tab-pagination button:disabled{background:#c4d2bc;cursor:not-allowed}.words-tab-pagination span{font-size:.9rem;color:var(--text-muted)}@media (max-width: 768px){.app-header{padding:.75rem 1rem}.header-content{flex-direction:column;align-items:stretch;gap:.75rem}.header-title{width:auto;font-size:1.25rem}.header-subtitle{letter-spacing:.12em}.header-menu-toggle{display:inline-flex;align-self:flex-start}.header-nav{display:none;flex-direction:column;justify-content:flex-start;gap:.5rem}.header-nav.is-open{display:flex}.header-nav-button{width:100%;text-align:left}.header-actions{display:none}.header-nav-logout{display:inline-flex;background:#fee2e2;color:#b91c1c;border-color:transparent}.dashboard{padding:1.5rem}.dashboard-quick-actions{flex-direction:column;align-items:stretch}.dashboard-layout{grid-template-columns:1fr}.main-panel{padding:.75rem;margin-bottom:1rem}.word-characters{font-size:2.75rem}.quick-add-row{flex-direction:column;align-items:stretch}.quick-add-deck-select,.quick-add-deck-button{width:100%;min-width:0}.lookup-meta{flex-direction:row;align-items:center}.related-words-list{gap:.5rem}.words-page{padding:1rem}.words-page .page-header h1{font-size:1.5rem}.words-tabs{flex-wrap:wrap;gap:.5rem}.words-tab-button{flex:1 1 calc(50% - .5rem);text-align:center;padding:.65rem .75rem}.words-tab-controls{flex-direction:column;align-items:stretch}.words-tab-controls>*{width:100%}.words-tab-table-wrapper{overflow-x:auto}}@media (max-width: 480px){.header-nav-button{flex:1 1 100%}.header-actions{justify-content:stretch}.header-logout-button{width:100%}.dashboard{padding:.75rem}.word-characters{font-size:2.3rem}.stats-section{padding:1rem}.words-tab-button{flex:1 1 100%}}@media (max-width: 600px){.character-breakdown{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}.character-item{min-width:180px}}.timeline-loading-skeleton{display:grid;gap:.75rem}
