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rotate(5deg)}.slot-icon{font-size:3rem;color:var(--primary);margin-bottom:.5rem;position:relative;z-index:1}.delete-btn{position:absolute;top:.5rem;right:.5rem;background:#f44;color:#fff;border:none;border-radius:50%;width:28px;height:28px;font-size:1.5rem;line-height:1;cursor:pointer;opacity:0;transition:opacity .2s;padding:0;display:flex;align-items:center;justify-content:center}.save-slot:hover .delete-btn{opacity:1}.delete-btn:hover{background:#c00}.slot-header{margin-bottom:1rem}.slot-name{font-size:1.3rem;margin:0 0 .25rem;color:var(--text-main)}.slot-date{font-size:.85rem;color:var(--text-sub);margin:0}.slot-description{font-size:.9rem;color:var(--text-sub);margin:0 0 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var(--border-color);background:var(--bg-secondary);border-radius:10px;cursor:pointer;transition:all .2s;margin-bottom:12px;color:var(--text-main);font-weight:600;font-size:.9rem}.export-btn:last-child{margin-bottom:0}.export-btn:hover:not(:disabled){border-color:var(--primary);background:var(--bg-tertiary);transform:translate(2px)}.export-btn:disabled{opacity:.4;cursor:not-allowed}.export-btn .btn-icon{font-size:1.2rem}.export-btn .btn-label{flex:1;text-align:left}.export-btn.reset-btn{border-color:var(--warning);color:var(--warning)}.export-btn.reset-btn:hover:not(:disabled){background:#f59e0b1a;border-color:var(--warning)}.export-btn.reset-btn.confirm{background:var(--warning);color:#fff;border-color:var(--warning);animation:pulse .5s ease-in-out infinite alternate}@keyframes pulse{0%{opacity:.8}to{opacity:1}}.save-slots-section{flex:1;padding:12px 12px 20px;overflow-y:auto;display:flex;flex-direction:column}.section-title{font-size:.85rem;font-weight:700;color:var(--text-sub);margin:0 0 14px 8px;text-transform:uppercase;letter-spacing:.5px}.section-header{display:flex;align-items:center;justify-content:space-between;cursor:pointer;padding:10px 8px;margin:0 0 14px;border-radius:8px;transition:background .2s}.section-header:hover{background:var(--bg-tertiary)}.section-header .section-title{margin:0}.section-toggle{font-size:.9rem;color:var(--text-sub);transition:transform .3s}.section-toggle.collapsed{transform:rotate(-90deg)}.save-slots-list{display:flex;flex-direction:column;gap:12px;margin-bottom:16px;max-height:2000px;overflow:visible;transition:max-height .3s ease-out,opacity .3s,margin-bottom .3s}.save-slots-list.collapsed{max-height:0;opacity:0;margin-bottom:0;overflow:hidden}.save-slot-item{display:flex;align-items:center;gap:12px;padding:12px;background:var(--bg-secondary);border:2px solid var(--border-color);border-radius:12px;cursor:pointer;transition:all .2s;text-align:left}.save-slot-item:hover{border-color:var(--primary);transform:translate(2px);box-shadow:0 2px 8px #4f46e51a}.save-slot-item.active{border-color:var(--primary);background:var(--bg-tertiary);box-shadow:0 2px 8px #4f46e533}.slot-icon{width:40px;height:40px;border-radius:10px;background:var(--bg-tertiary);display:flex;align-items:center;justify-content:center;font-size:1.5rem;flex-shrink:0}.slot-icon img{width:100%;height:100%;border-radius:10px;object-fit:cover}.slot-info{flex:1;min-width:0}.slot-title{font-size:.9rem;font-weight:600;color:var(--text-main);margin-bottom:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.slot-progress{display:flex;flex-direction:column;align-items:flex-start;gap:2px}.progress-text{font-size:.8rem;color:var(--text-sub);font-weight:600}.progress-detail{font-size:.7rem;color:var(--text-sub);opacity:.8}.slot-delete-btn{width:32px;height:32px;border-radius:8px;border:none;background:transparent;color:var(--text-sub);font-size:.9rem;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center;flex-shrink:0;opacity:0}.save-slot-item:hover .slot-delete-btn{opacity:1}.slot-delete-btn:hover{background:#ef44441a;color:var(--danger)}.slot-delete-btn.confirm{opacity:1;background:var(--danger);color:#fff;font-size:.7rem;font-weight:700;width:auto;padding:0 8px;animation:shake .3s ease-in-out}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-2px)}75%{transform:translate(2px)}}.btn-add-slot{width:100%;padding:12px;background:var(--bg-secondary);border:2px dashed var(--border-color);border-radius:12px;color:var(--text-sub);font-weight:600;cursor:pointer;transition:all .2s;font-size:.9rem}.btn-add-slot:hover{border-color:var(--primary);color:var(--primary);background:var(--bg-tertiary)}.create-slot-form{width:100%;padding:12px;background:var(--card-bg);border:2px solid var(--primary);border-radius:12px;display:flex;flex-direction:column;gap:8px}.slot-name-input{width:100%;padding:8px 12px;border:1px solid var(--border-color);border-radius:8px;font-size:.9rem;outline:none;transition:border-color .2s,background .2s;background:var(--bg-secondary);color:var(--text-main)}.slot-name-input:focus{border-color:var(--primary)}.slot-name-input::placeholder{color:var(--text-sub)}.form-actions{display:flex;gap:8px}.btn-confirm,.btn-cancel{flex:1;padding:8px;border:none;border-radius:8px;font-size:1.1rem;font-weight:700;cursor:pointer;transition:all .2s}.btn-confirm{background:var(--success);color:#fff}.btn-confirm:hover{background:#059669}.btn-cancel{background:var(--bg-tertiary);color:var(--text-sub)}.btn-cancel:hover{background:var(--bg-secondary);border:1px solid var(--border-color)}.sidebar-footer{flex-shrink:0;padding:16px 20px;border-top:1px solid var(--border-color);display:flex;flex-direction:column;align-items:stretch;gap:10px;background:var(--bg-secondary)}.cloud-sync-section{display:flex;flex-direction:column;gap:8px;padding:12px;background:var(--bg-tertiary);border-radius:10px;border:1px solid var(--border-color)}.user-info{display:flex;align-items:center;justify-content:space-between;gap:8px}.user-email{font-size:.85rem;color:var(--text-main);font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1}.btn-logout{padding:4px 10px;font-size:.75rem;font-weight:600;color:var(--text-sub);background:transparent;border:1px solid var(--border-color);border-radius:6px;cursor:pointer;transition:all .2s;flex-shrink:0}.btn-logout:hover{color:var(--danger);border-color:var(--danger);background:#ef44441a}.btn-sync{width:100%;padding:8px 12px;font-size:.85rem;font-weight:600;color:#fff;background:linear-gradient(135deg,var(--primary) 0%,#6366f1 100%);border:none;border-radius:8px;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center;gap:6px}.btn-sync:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 12px #4f46e566}.btn-sync:disabled{opacity:.7;cursor:not-allowed;background:var(--text-sub)}.offline-indicator{display:flex;align-items:center;justify-content:center;gap:6px;padding:8px 12px;font-size:.85rem;color:var(--text-sub);background:var(--bg-tertiary);border:1px dashed var(--border-color);border-radius:8px}.user-profile-card{background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:12px;overflow:hidden}.user-profile-header{display:flex;align-items:center;gap:12px;padding:12px;cursor:pointer;transition:background .2s}.user-profile-header:hover{background:var(--bg-secondary)}.user-avatar{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.avatar-icon{font-size:1.5rem}.avatar-icon.cloud{background:linear-gradient(135deg,#3b82f6,#8b5cf6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.user-details{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}.user-name{font-size:.9rem;font-weight:600;color:var(--text-main);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.user-status{font-size:.75rem;font-weight:500}.user-status.online{color:var(--success)}.user-status.offline{color:var(--text-sub)}.user-menu-toggle{font-size:.8rem;color:var(--text-sub);transition:transform .2s;flex-shrink:0}.user-menu-toggle.open{transform:rotate(180deg)}.user-menu{border-top:1px solid var(--border-color);padding:12px;display:flex;flex-direction:column;gap:10px;animation:slideDown .2s ease-out}.user-menu-info{background:var(--bg-secondary);border-radius:8px;padding:10px}.menu-info-row{display:flex;justify-content:space-between;align-items:center;padding:4px 0}.menu-info-row:not(:last-child){border-bottom:1px solid var(--border-color);padding-bottom:8px;margin-bottom:4px}.info-label{font-size:.75rem;color:var(--text-sub);font-weight:500}.info-value{font-size:.8rem;color:var(--text-main);font-weight:500;max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.offline-hint{font-size:.8rem;color:var(--text-sub);line-height:1.5;margin:0}.user-menu-btn{width:100%;display:flex;align-items:center;gap:10px;padding:10px 12px;border:none;border-radius:8px;font-size:.85rem;font-weight:600;cursor:pointer;transition:all .2s}.user-menu-btn .btn-icon{font-size:1rem}.user-menu-btn .btn-text{flex:1;text-align:left}.user-menu-btn.sync{background:linear-gradient(135deg,var(--primary) 0%,#6366f1 100%);color:#fff}.user-menu-btn.sync:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 12px #4f46e566}.user-menu-btn.sync:disabled{opacity:.7;cursor:not-allowed}.user-menu-btn.logout{background:var(--bg-secondary);color:var(--text-main);border:1px solid var(--border-color)}.user-menu-btn.logout:hover:not(:disabled){background:#ef44441a;border-color:var(--danger);color:var(--danger)}.user-menu-btn.login{background:linear-gradient(135deg,#10b981,#059669);color:#fff}.user-menu-btn.login:hover{transform:translateY(-1px);box-shadow:0 4px 12px #10b98166}.footer-buttons{display:flex;flex-direction:column;gap:8px;width:100%}.theme-toggle-btn{width:100%;padding:10px 16px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:10px;color:var(--text-main);font-size:.9rem;font-weight:600;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center;gap:8px}.theme-toggle-btn:hover{background:var(--primary);color:#fff;border-color:var(--primary)}.accent-picker{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;padding:10px 0}.accent-dot{width:20px;height:20px;border-radius:999px;border:2px solid transparent;cursor:pointer;padding:0;background:transparent;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;position:relative}.accent-dot:after{content:"";position:absolute;inset:0;border-radius:999px;opacity:0;transition:opacity .2s ease}.accent-dot:hover{transform:scale(1.15)}.accent-dot:focus-visible{outline:2px solid var(--primary);outline-offset:3px}.accent-dot.active{transform:scale(1.2);box-shadow:0 0 0 3px var(--bg-tertiary),0 0 8px #0003;border-color:#ffffff4d}.accent-indigo{background:linear-gradient(135deg,#4f46e5,#818cf8)}.accent-emerald{background:linear-gradient(135deg,#10b981,#34d399)}.accent-rose{background:linear-gradient(135deg,#e11d48,#fb7185)}.accent-amber{background:linear-gradient(135deg,#f59e0b,#fbbf24)}.app-version{font-size:.75rem;color:var(--text-sub);text-align:center}.visit-stats{display:flex;align-items:center;justify-content:center;gap:16px;padding:10px 12px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:8px;font-size:.8rem;color:var(--text-sub)}.visit-stat-item{display:flex;align-items:center;gap:4px}.visit-stat-item .stat-icon{font-size:.9rem}.visit-stat-item .stat-text{font-weight:500}.sidebar::-webkit-scrollbar{width:6px}.sidebar::-webkit-scrollbar-track{background:transparent}.sidebar::-webkit-scrollbar-thumb{background:var(--text-sub);border-radius:3px;opacity:.5}.sidebar::-webkit-scrollbar-thumb:hover{background:var(--text-main)}@media(max-width:1024px){.sidebar{position:static;border:none;width:100%!important}.sidebar-resize-handle{display:none}.sidebar-section-header{padding:10px 8px;font-size:.85rem}.badge-count{font-size:.7rem;padding:1px 6px}.sidebar-scroll{padding:10px 12px}.sidebar-section--saves .sidebar-section-header{padding:10px}.btn-text-desktop{display:none}.btn-text-mobile{display:inline;font-size:1.2rem;line-height:1}.desktop-only{display:none!important}.sidebar-header-btn.close-btn{padding:8px 16px;background:transparent;border:none;font-size:1.5rem;color:var(--text-main)}}@media(min-width:1025px){.btn-text-mobile{display:none}.btn-text-desktop{display:inline}.desktop-only{display:inline-block}}.word-card-container{width:100%;max-width:640px;margin:0 auto}.word-card{perspective:1200px;width:100%;height:420px;margin-bottom:25px;position:relative}.word-card>div:first-child{position:relative;width:100%;height:100%;transform-style:preserve-3d;transition:transform .4s cubic-bezier(.4,0,.2,1);cursor:pointer}.word-card.flipped>div:first-child{transform:rotateY(180deg)}.card-face{position:absolute;width:100%;height:100%;backface-visibility:hidden;background:var(--card-bg);border-radius:24px;box-shadow:var(--card-shadow);display:flex;flex-direction:column;justify-content:center;align-items:center;padding:36px;border:1px solid var(--border-color);transition:background .3s,border-color .3s}.card-back{transform:rotateY(180deg);justify-content:flex-start;overflow-y:auto}.word-main{text-align:center;width:100%}.word-text{font-size:3.5rem;font-weight:800;color:var(--text-main);margin:0 0 18px;line-height:1.1;text-align:center}.phonetic{font-size:1.3rem;color:#94a3b8;font-family:monospace;margin-bottom:28px;text-align:center}.speak-btn{background:var(--bg-tertiary);border:none;width:48px;height:48px;border-radius:50%;font-size:1.5rem;cursor:pointer;transition:all .2s;display:inline-flex;align-items:center;justify-content:center;margin-top:10px}.speak-btn:hover{background:var(--primary);transform:scale(1.1)}.speak-btn:hover:after{content:""}.speak-btn.speaking{background:var(--primary);animation:pulse 1s infinite}.speak-btn.small{width:36px;height:36px;font-size:1.2rem;margin-top:0;margin-left:10px}@keyframes 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.2s}.fav-btn:active{transform:scale(1.2)}.fav-btn.active{color:#f43f5e}.mistake-indicator{display:flex;align-items:center;gap:6px;font-size:.85rem;color:var(--danger);font-weight:600;margin-bottom:10px;opacity:0;background:#ef44441a;padding:4px 10px;border-radius:20px;transition:opacity .3s}.mistake-indicator.visible{opacity:1}.flip-hint{font-size:1.15rem;color:#94a3b8;font-family:monospace;margin-top:24px;text-align:center}.word-text-small{font-size:1.6rem;font-weight:700;color:var(--primary);margin:0 0 20px;text-align:center;width:100%}.phonetic-small{font-size:1rem;color:#94a3b8;font-family:monospace;margin-bottom:15px;text-align:center}.meanings{width:100%;margin-bottom:15px}.meaning-item{margin-bottom:.8rem;display:flex;gap:.5rem;align-items:baseline}.part-of-speech{color:var(--primary);font-weight:600;font-size:.85rem;flex-shrink:0}.definition{color:var(--text-main);line-height:1.5;font-size:1rem}.examples{background:var(--bg-tertiary);padding:12px;border-radius:12px;margin-bottom:15px;width:100%;border:1px solid var(--border-color)}.examples h3{margin:0 0 8px;font-size:.9rem;color:var(--text-sub);font-weight:600}.example{margin:6px 0;color:var(--text-sub);line-height:1.5;font-style:italic;font-size:.9rem}.note-area{width:100%;margin-top:10px;text-align:left}.note-input{width:100%;border:2px solid var(--border-color);background:var(--bg-tertiary);border-radius:12px;padding:12px;font-size:.95rem;resize:none;height:80px;font-family:inherit;transition:border-color .2s,background .2s;color:var(--text-main)}.note-input:focus{border-color:var(--primary);background:var(--bg-secondary)}.note-input::placeholder{color:var(--text-sub)}.word-meta{display:flex;gap:1rem;align-items:center;margin-top:auto;padding-top:1rem;border-top:1px solid var(--border-color);width:100%}.difficulty{color:var(--warning);font-size:.9rem}.card-actions{display:flex;gap:15px;width:100%;max-width:500px;margin:0 auto}.action-btn{flex:1;padding:18px;border:none;border-radius:16px;font-size:1.1rem;font-weight:700;cursor:pointer;transition:transform .1s;display:flex;align-items:center;justify-content:center;gap:8px;color:#fff;box-shadow:0 10px 15px -3px #0000001a}.action-btn:active{transform:scale(.96)}.action-btn:disabled{opacity:.6;cursor:not-allowed}.btn-dont-know{background:var(--danger)}.btn-dont-know:hover:not(:disabled){background:#dc2626}.btn-next{background:var(--bg-secondary);color:var(--text-sub);border:2px solid var(--border-color);box-shadow:none;flex:0 0 65px;font-size:1.5rem;padding:0;transition:background .2s,border-color .2s}.btn-next:hover:not(:disabled){background:var(--bg-tertiary);border-color:var(--primary)}.btn-know{background:var(--success)}.btn-know:hover:not(:disabled){background:#059669}@media(max-width:768px){.word-card-container{max-width:100%}.word-card{height:380px}.word-text{font-size:2.8rem}.phonetic{font-size:1.1rem}.card-face{padding:28px}}@media(max-width:480px){.word-text{font-size:2.4rem}.phonetic{font-size:1rem}.word-card{height:340px}.card-face{padding:20px}.action-btn{padding:15px;font-size:1rem}.flip-hint{font-size:1rem}}.card-back::-webkit-scrollbar{width:6px}.card-back::-webkit-scrollbar-track{background:var(--bg-tertiary);border-radius:3px}.card-back::-webkit-scrollbar-thumb{background:var(--text-sub);border-radius:3px;opacity:.5}.card-back::-webkit-scrollbar-thumb:hover{background:var(--text-main)}.learn-page{width:100%;max-width:1200px;margin:0 auto;padding:0;min-height:100vh;background-color:transparent;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px}.header-bar{background:var(--card-bg);padding:1rem 1.5rem;display:flex;align-items:center;gap:1.5rem;box-shadow:0 2px 8px #0000000d;margin-bottom:20px;width:100%;max-width:1200px;border-radius:16px;border:1px solid var(--border-color);transition:background .3s,border-color .3s}.btn-back{background:transparent;border:none;font-size:.95rem;color:var(--primary);cursor:pointer;padding:.5rem 1rem;border-radius:8px;transition:background .2s;font-weight:600}.btn-back:hover{background:var(--bg-tertiary)}.header-bar h2{margin:0;flex:1;color:var(--text-main);font-size:1.3rem;font-weight:800}.header-actions{display:flex;align-items:center;gap:12px}.progress-info{font-size:1rem;color:var(--text-sub);font-weight:600}.btn-refresh{width:36px;height:36px;border-radius:50%;border:2px solid var(--border-color);background:var(--bg-secondary);font-size:1rem;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center}.btn-refresh:hover{border-color:var(--primary);background:var(--bg-tertiary);transform:rotate(90deg)}.btn-refresh:active{transform:rotate(180deg)}.tabs{display:flex;gap:10px;margin-bottom:20px;overflow-x:auto;width:100%;max-width:1200px;padding:0 0 5px;scrollbar-width:none;justify-content:center;flex-wrap:wrap}.tabs::-webkit-scrollbar{display:none}.tab{white-space:nowrap;padding:8px 16px;border-radius:20px;background:var(--bg-secondary);color:var(--text-sub);border:1px solid var(--border-color);font-size:.9rem;cursor:pointer;font-weight:600;transition:all .2s}.tab:hover{background:var(--bg-tertiary);border-color:var(--primary);color:var(--primary)}.tab.active{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:0 4px 6px -2px #4f46e54d}.dashboard{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;width:100%;max-width:900px;margin-bottom:25px;padding:0}.stat-card{background:var(--card-bg);padding:20px 10px;border-radius:16px;text-align:center;box-shadow:0 4px 6px -1px #0000000d;transition:transform .2s,background .3s;border:1px solid var(--border-color)}.stat-card:hover{transform:translateY(-2px);box-shadow:0 6px 8px -1px #0000001a}.stat-num{display:block;font-size:1.8rem;font-weight:800;margin-bottom:8px;line-height:1}.stat-label{font-size:.85rem;color:var(--text-sub);font-weight:500}.stats-bar{display:flex;gap:2rem;justify-content:center;padding:12px 1.5rem;background:var(--card-bg);margin:0 0 25px;border-radius:12px;box-shadow:0 2px 8px #0000000d;width:100%;max-width:900px;border:1px solid var(--border-color);transition:background .3s,border-color .3s}.stat-item{display:flex;flex-direction:column;align-items:center;gap:.25rem}.stat-label{font-size:.8rem;color:var(--text-sub);font-weight:500}.stat-value{font-size:1.3rem;font-weight:700;color:var(--primary)}.stat-value.correct{color:var(--success)}.stat-value.wrong{color:var(--danger)}.empty-state{text-align:center;padding:4rem 2rem}.empty-state h2{font-size:2rem;margin-bottom:1rem;color:var(--text-main)}.empty-state p{font-size:1.1rem;color:var(--text-sub);margin-bottom:2rem}.session-summary{display:flex;gap:2rem;justify-content:center;margin-top:2rem;padding:2rem;background:var(--card-bg);border-radius:12px;box-shadow:0 4px 12px #00000014;max-width:500px;margin-left:auto;margin-right:auto;border:1px solid var(--border-color)}.summary-item{display:flex;flex-direction:column;align-items:center;gap:.5rem}.summary-item .label{font-size:.9rem;color:var(--text-sub)}.summary-item .value{font-size:2rem;font-weight:700;color:var(--primary)}.summary-item .value.correct{color:var(--success)}.summary-item .value.wrong{color:var(--danger)}.session-actions{margin-top:2rem;display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.btn-continue{padding:14px 32px;font-size:1.1rem;border-radius:12px;border:none;cursor:pointer;font-weight:700;transition:all .2s}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 12px #4f46e54d}.btn-primary:hover{background:#4338ca;transform:translateY(-2px);box-shadow:0 6px 16px #4f46e566}.btn-secondary{background:var(--bg-secondary);color:var(--text-main);border:2px solid var(--border-color);padding:12px 24px;font-size:1rem;border-radius:10px;cursor:pointer;font-weight:600;transition:all .2s}.btn-secondary:hover{background:var(--bg-tertiary);border-color:var(--primary);color:var(--primary)}.smart-mode-switch{min-width:260px;max-width:380px;padding:18px 24px;border-radius:16px;border:2px solid var(--border-color);background:var(--card-bg);box-shadow:0 4px 16px #0000000f;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;cursor:pointer;text-align:center;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,background .2s ease}.smart-mode-title{font-size:1rem;font-weight:700;color:var(--primary);line-height:1.3}.smart-mode-hint{font-size:.8rem;line-height:1.5;color:var(--text-sub);max-width:320px}.smart-mode-switch:hover{transform:translateY(-2px);box-shadow:0 8px 24px #0000001f;border-color:var(--primary);background:linear-gradient(135deg,var(--card-bg) 0%,var(--bg-tertiary) 100%)}.smart-mode-switch:active{transform:translateY(0);box-shadow:0 4px 12px #00000014}.smart-mode-switch:disabled{opacity:.5;cursor:not-allowed;transform:none}.session-complete h2{font-size:2.5rem}.session-complete p{font-size:1.2rem;color:var(--text-sub)}@media(max-width:768px){.learn-page{justify-content:flex-start;padding-top:20px;gap:12px}.header-bar{padding:.8rem 1rem;margin-bottom:15px}.header-bar 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h3{margin:0;font-size:1.5rem;font-weight:800;color:var(--text-main);display:flex;align-items:center;gap:10px}.btn-close{width:36px;height:36px;border:none;background:var(--bg-tertiary);color:var(--text-sub);border-radius:10px;font-size:1.3rem;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center;flex-shrink:0}.btn-close:hover{background:var(--bg-secondary);color:var(--text-main);transform:rotate(90deg)}.dict-info-banner{background:linear-gradient(135deg,#818cf82e,#94a3b80f);padding:20px 28px;border-bottom:1px solid var(--border-color)}.dict-info-banner h4{margin:0 0 6px;font-size:1.2rem;font-weight:700;color:var(--primary)}.dict-info-banner p{margin:0;font-size:.9rem;color:var(--text-sub)}.modal-body{padding:28px;display:flex;flex-direction:column;gap:28px}.config-section{display:flex;flex-direction:column;gap:12px}.config-label{font-size:.95rem;font-weight:700;color:var(--text-main);margin-bottom:4px}.quantity-presets{display:flex;gap:8px;flex-wrap:wrap}.preset-btn{padding:10px 18px;background:var(--bg-secondary);border:2px solid var(--border-color);border-radius:10px;font-size:.9rem;font-weight:600;color:var(--text-main);cursor:pointer;transition:all .2s}.preset-btn:hover{border-color:var(--primary);background:var(--bg-tertiary)}.preset-btn.active{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 4px 12px #4f46e54d}.quantity-slider{width:100%;height:6px;border-radius:3px;background:var(--border-color);outline:none;cursor:pointer;-webkit-appearance:none}.quantity-slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:20px;height:20px;border-radius:50%;background:var(--primary);cursor:pointer;box-shadow:0 2px 6px #4f46e566;transition:all .2s}.quantity-slider::-webkit-slider-thumb:hover{transform:scale(1.2);box-shadow:0 4px 12px #4f46e580}.quantity-slider::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--primary);cursor:pointer;border:none;box-shadow:0 2px 6px #4f46e566;transition:all .2s}.quantity-slider::-moz-range-thumb:hover{transform:scale(1.2);box-shadow:0 4px 12px #4f46e580}.quantity-display{text-align:center;font-size:1.1rem;font-weight:700;color:var(--primary);padding:8px;background:#818cf81f;border-radius:10px}.difficulty-filters{display:flex;gap:8px;flex-wrap:wrap}.difficulty-btn{padding:10px 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#4f46e533}.mode-desc{font-size:.8rem;font-weight:500;color:var(--text-sub)}.import-progress{padding:20px 28px;background:var(--bg-tertiary);border-top:1px solid var(--border-color)}.progress-bar{width:100%;height:8px;background:var(--bg-tertiary);border-radius:4px;overflow:hidden;margin-bottom:8px}.progress-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--success));transition:width .3s ease-out;border-radius:4px}.progress-text{text-align:center;font-size:.9rem;font-weight:600;color:var(--text-main)}.modal-footer{display:flex;gap:12px;padding:20px 28px;border-top:1px solid var(--border-color);background:var(--bg-tertiary);border-radius:0 0 20px 20px}.btn{flex:1;padding:14px 24px;border:none;border-radius:12px;font-size:1rem;font-weight:700;cursor:pointer;transition:all .2s}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-cancel{background:var(--bg-secondary);color:var(--text-sub);border:2px solid 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20px}.mode-selector,.modal-footer{flex-direction:column}.btn{width:100%}}.modal-content::-webkit-scrollbar{width:8px}.modal-content::-webkit-scrollbar-track{background:var(--bg-tertiary)}.modal-content::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}.modal-content::-webkit-scrollbar-thumb:hover{background:var(--text-sub)}.smart-import{max-width:800px;margin:0 auto;padding:24px}.smart-import-header{text-align:center;margin-bottom:32px}.smart-import-header h2{font-size:1.75rem;font-weight:800;color:var(--text-main);margin:0 0 8px}.smart-import-header p{font-size:1rem;color:var(--text-sub);margin:0}.input-stage{display:flex;flex-direction:column;gap:20px}.input-section{display:flex;flex-direction:column;gap:8px}.input-label{font-size:1rem;font-weight:600;color:var(--text-main);display:flex;flex-direction:column;gap:4px}.input-hint{font-size:.85rem;font-weight:400;color:var(--text-sub)}.word-input{width:100%;padding:16px;border:2px solid var(--border-color);border-radius:12px;font-size:1rem;font-family:Consolas,Monaco,monospace;line-height:1.6;resize:vertical;background:var(--card-bg);color:var(--text-main);transition:border-color .2s}.word-input:focus{outline:none;border-color:var(--primary)}.word-input::placeholder{color:var(--text-sub);opacity:.6}.input-stats{display:flex;justify-content:flex-end;padding:8px 0}.stat-item{font-size:.9rem;color:var(--text-sub)}.stat-item strong{color:var(--primary);font-weight:700}.action-buttons{display:flex;justify-content:center;gap:16px;margin-top:16px}.btn-large{padding:14px 32px!important;font-size:1.05rem!important}.preview-stage{display:flex;flex-direction:column;gap:24px}.summary-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.summary-card{background:var(--card-bg);border:2px solid var(--border-color);border-radius:16px;padding:20px;text-align:center;transition:transform .2s}.summary-card:hover{transform:translateY(-2px)}.summary-value{font-size:2.5rem;font-weight:800;line-height:1;margin-bottom:8px}.summary-label{font-size:.9rem;color:var(--text-sub)}.summary-card.total .summary-value{color:var(--primary)}.summary-card.found .summary-value{color:var(--success)}.summary-card.not-found .summary-value{color:var(--warning)}.match-progress{background:var(--card-bg);border:1px solid var(--border-color);border-radius:12px;padding:16px 20px}.match-progress .progress-bar{height:12px;background:var(--bg-tertiary);border-radius:6px;overflow:hidden;margin-bottom:8px}.match-progress .progress-fill{height:100%;background:linear-gradient(90deg,var(--success),#34d399);border-radius:6px;transition:width .5s ease-out}.match-progress .progress-text{font-size:.9rem;color:var(--text-sub);text-align:center}.preview-list{background:var(--card-bg);border:1px solid var(--border-color);border-radius:16px;overflow:hidden}.preview-list h3{font-size:1.1rem;font-weight:700;color:var(--text-main);margin:0;padding:16px 20px;border-bottom:1px solid var(--border-color);background:var(--bg-tertiary)}.preview-items{max-height:400px;overflow-y:auto}.preview-item{display:flex;align-items:flex-start;gap:12px;padding:14px 20px;border-bottom:1px solid var(--border-color);transition:background 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.btn{padding:12px 24px;border:none;border-radius:10px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s;display:inline-flex;align-items:center;gap:8px}.smart-import .btn-primary{background:linear-gradient(135deg,var(--primary) 0%,#6366f1 100%);color:#fff}.smart-import .btn-primary:hover:not(:disabled){background:linear-gradient(135deg,#5b21b6 0%,var(--primary) 100%);box-shadow:0 4px 12px #4f46e566;transform:translateY(-1px)}.smart-import .btn-primary:disabled{background:var(--text-sub);cursor:not-allowed;opacity:.6}.smart-import .btn-secondary{background:var(--bg-tertiary);color:var(--text-main);border:2px solid var(--border-color)}.smart-import 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.mode-text{color:var(--primary)}.dict-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:20px;margin-top:24px}.dict-card{background:var(--card-bg);border:2px solid var(--border-color);border-radius:16px;padding:24px;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column;gap:16px;position:relative;overflow:hidden}.dict-card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary),var(--success));transform:scaleX(0);transform-origin:left;transition:transform .3s}.dict-card:hover{border-color:var(--primary);box-shadow:0 8px 24px #4f46e526;transform:translateY(-4px)}.dict-card:hover:before{transform:scaleX(1)}.dict-card:active{transform:translateY(-2px)}.dict-icon{width:64px;height:64px;border-radius:16px;background:var(--bg-tertiary);display:flex;align-items:center;justify-content:center;font-size:2.5rem;flex-shrink:0;box-shadow:0 4px 12px #0000000d}.dict-info{flex:1;display:flex;flex-direction:column;gap:8px}.dict-name{font-size:1.25rem;font-weight:700;color:var(--text-main);margin:0;line-height:1.3}.dict-desc{font-size:.9rem;color:var(--text-sub);margin:0;line-height:1.5}.dict-meta{display:flex;align-items:center;gap:12px;margin-top:4px}.dict-count{font-size:.85rem;font-weight:600;color:var(--primary);padding:4px 10px;background:var(--bg-tertiary);border-radius:8px}.dict-category{font-size:.85rem;font-weight:600;color:var(--text-sub);padding:4px 10px;background:var(--bg-tertiary);border-radius:8px}.btn-import-quick{width:100%;padding:12px 20px;background:linear-gradient(135deg,var(--primary) 0%,#6366f1 100%);color:#fff;border:none;border-radius:12px;font-size:.95rem;font-weight:700;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center;gap:8px}.btn-import-quick:hover{background:linear-gradient(135deg,#5b21b6 0%,var(--primary) 100%);box-shadow:0 4px 12px #4f46e566;transform:translateY(-1px)}.btn-import-quick:active{transform:translateY(0)}@media(max-width:768px){.advanced-import{padding:24px 16px}.import-header h2{font-size:1.5rem}.import-mode-switcher{grid-template-columns:1fr;gap:12px;margin-bottom:24px}.mode-tab{flex-direction:row;justify-content:flex-start;padding:16px 20px;gap:12px}.mode-icon{font-size:1.5rem}.mode-text{font-size:1rem}.mode-desc{display:none}.dict-grid{grid-template-columns:1fr;gap:16px}.dict-card{padding:20px}.dict-icon{width:56px;height:56px;font-size:2rem}}.dict-grid:empty:after{content:"暂无可用词典";display:block;text-align:center;padding:48px;color:var(--text-sub);font-size:1rem;grid-column:1 / -1}*{box-sizing:border-box;margin:0;padding:0}body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica 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.2s}.sidebar-collapsed-handle:hover{background:var(--primary);color:#fff;border-color:var(--primary)}.sidebar-collapsed-left{left:0;border-radius:0 8px 8px 0;border-left:none}.sidebar-collapsed-right{right:0;border-radius:8px 0 0 8px;border-right:none}.mobile-menu-btn{display:none;position:fixed;top:50%;left:0;transform:translateY(-50%);z-index:101;width:36px;height:72px;border-radius:0 12px 12px 0;background:var(--card-bg);border:2px solid var(--border-color);border-left:none;font-size:1.3rem;cursor:pointer;box-shadow:2px 0 8px #0000001a;transition:all .2s;color:var(--text-main)}.mobile-menu-btn:hover{background:var(--bg-tertiary);width:42px}.mobile-menu-btn:active{background:var(--primary);color:#fff}.sidebar-overlay{display:none}.stats-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:60vh;text-align:center;padding:2rem}.stats-placeholder h2{font-size:2rem;color:var(--text-main);margin-bottom:1rem}.stats-placeholder p{font-size:1.1rem;color:var(--text-sub)}@media(max-width:1024px){.main-content.with-sidebar,.main-content.with-sidebar.sidebar-left,.main-content.with-sidebar.sidebar-right{margin-left:0;margin-right:0}.sidebar-wrapper.desktop-collapsed{display:block}.sidebar-wrapper{position:fixed;top:0;bottom:0;height:100vh;z-index:200;transition:transform .3s cubic-bezier(.4,0,.2,1);width:var(--sidebar-width, 280px)}.sidebar-wrapper.sidebar-left{left:0;transform:translate(-100%)}.sidebar-wrapper.sidebar-right{right:0;transform:translate(100%)}.sidebar-wrapper.mobile-open.sidebar-left,.sidebar-wrapper.mobile-open.sidebar-right{transform:translate(0);box-shadow:0 0 50px #0003}.sidebar-overlay{display:block;position:fixed;inset:0;background:#00000080;z-index:190;opacity:0;pointer-events:none;transition:opacity .3s;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.sidebar-overlay.show{opacity:1;pointer-events:all}.mobile-menu-btn{display:flex;align-items:center;justify-content:center}.sidebar-collapsed-handle{display:none}}@media(max-width:768px){.mobile-menu-btn{width:32px;height:64px;font-size:1.2rem}.stats-placeholder h2{font-size:1.5rem}.stats-placeholder p{font-size:1rem}}