#root{width:100%;min-height:100vh}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}.login-container{position:fixed;inset:0;background:linear-gradient(135deg,#f8f9fa,#e9ecef);display:flex;align-items:center;justify-content:center;overflow:hidden}.bg-blob{position:absolute;border-radius:50%;filter:blur(60px);z-index:1;opacity:.6;animation:float 10s infinite ease-in-out}.blob-1{width:300px;height:300px;background:#e2ebf6;top:10%;left:20%;animation-delay:0s}.blob-2{width:250px;height:250px;background:#e8def8;bottom:15%;right:20%;animation-delay:-5s}.login-card{position:relative;z-index:10;background:#ffffffd9;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);padding:40px 50px;border-radius:24px;width:90%;max-width:380px;box-shadow:0 20px 60px #00000014;text-align:center;border:1px solid rgba(255,255,255,.6)}.brand-logo{width:48px;height:48px;margin-bottom:16px;color:#1f1f1f;animation:slideDown .5s ease-out}.login-title{margin-bottom:30px;font-size:1.6rem;color:#1f1f1f;font-weight:700;letter-spacing:-.5px}.login-input{width:100%;padding:16px 20px;margin-bottom:16px;border:2px solid transparent;border-radius:16px;font-size:1rem;outline:none;transition:all .3s;background:#fff;box-shadow:0 4px 10px #00000008;box-sizing:border-box}.login-input:focus{border-color:#2196f3;box-shadow:0 4px 12px #2196f326;transform:translateY(-1px)}.btn-primary{width:100%;padding:16px;background:#1f1f1f;color:#fff;border:none;border-radius:30px;font-size:1.1rem;font-weight:600;cursor:pointer;margin-top:15px;transition:all .3s cubic-bezier(.34,1.56,.64,1);box-shadow:0 10px 20px #0000001a}.btn-primary:hover{transform:translateY(-2px) scale(1.02);box-shadow:0 15px 30px #00000026;background:#333}.btn-primary:active{transform:scale(.98)}.btn-primary:disabled{background:#ccc;transform:none;box-shadow:none;cursor:not-allowed}@keyframes float{0%{transform:translate(0)}50%{transform:translateY(20px)}to{transform:translate(0)}}@keyframes slideDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}:root{--bg-color: #F8F9FA;--text-primary: #1F1F1F;--text-secondary: #5f6368;--card-radius: 24px}*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:#fff;color:var(--text-primary);min-height:100vh;display:flex;flex-direction:column}.header{padding:20px 40px;display:flex;justify-content:space-between;align-items:center;background:#fff;position:sticky;top:0;z-index:100;max-width:1600px;margin:0 auto;width:100%}.header-right{display:flex;align-items:center;gap:16px}.header-greeting{font-size:1rem;color:#5f6368;font-weight:500}.brand{display:flex;align-items:center;gap:12px;font-size:1.5rem;font-weight:600;color:var(--text-primary);letter-spacing:-.5px;text-decoration:none}.brand-logo{width:32px;height:32px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transform:translateY(11px)}.brand span{color:#6c757d;font-weight:400;font-size:.9em}.user-profile{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#2196f3,#21cbf3);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.1rem;cursor:pointer;transition:transform .2s;line-height:1}.user-profile:active{transform:scale(.95)}.nav-tabs{padding:10px 40px;display:flex;gap:12px;overflow-x:auto;scrollbar-width:none;background:#fff;max-width:1600px;margin:0 auto;width:100%}.nav-tabs::-webkit-scrollbar{display:none}.tab-pill{padding:8px 16px;border-radius:20px;background:#f0f2f4;color:var(--text-primary);font-size:.95rem;font-weight:500;cursor:pointer;border:1px solid transparent;white-space:nowrap;transition:all .2s ease}.tab-pill.active{background:#e8f0fe;color:#1967d2;border-color:#d2e3fc}.main-container{flex:1;padding:20px 40px;max-width:1600px;margin:0 auto;width:100%}.task-grid{display:grid;gap:20px;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));padding-bottom:40px}.task-card{border-radius:var(--card-radius);padding:28px;min-height:220px;display:flex;flex-direction:column;justify-content:space-between;cursor:pointer;text-decoration:none;color:inherit;position:relative;border:1px solid rgba(0,0,0,.02);transition:transform .3s cubic-bezier(.34,1.56,.64,1),box-shadow .2s;overflow:hidden}.task-card:hover{transform:translateY(-4px);box-shadow:0 10px 20px #0000000d;z-index:1}.task-card:active{transform:scale(.98)}.card-top{display:flex;flex-direction:column;gap:15px}.card-icon{font-size:2.5rem;margin-bottom:5px;line-height:1}.card-title{font-size:1.4rem;font-weight:600;line-height:1.3;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;color:#1f1f1f;padding-right:20px}.card-desc{font-size:.9rem;color:#666;margin-top:-5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.card-meta{margin-top:auto;display:flex;justify-content:space-between;align-items:flex-end}.meta-info{display:flex;flex-direction:column;gap:4px;font-size:.85rem;color:#0009}.meta-tag{font-weight:500;text-transform:uppercase;letter-spacing:.5px;font-size:.75rem;opacity:.7}.status-badge{display:inline-block;padding:2px 8px;border-radius:4px;font-size:.75rem;font-weight:600;margin-top:4px}.status-completed{background:#dcefdc;color:#1e8e3e}.play-indicator{width:40px;height:40px;border-radius:50%;background:#fff9;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.8);transition:all .2s;color:#333}.task-card:hover .play-indicator{background:#fff;transform:scale(1.1)}.card-spinner{position:absolute;top:24px;right:24px;width:24px;height:24px;border:3px solid rgba(0,0,0,.1);border-top-color:#1a73e8;border-radius:50%;animation:spin .8s linear infinite;display:none}.card-spinner.active{display:block}@media only screen and (min-width:1024px){.task-grid{grid-template-columns:repeat(3,1fr)}}@media only screen and (min-width:768px)and (max-width:1023px){.header,.main-container{padding:20px 30px}.task-grid{grid-template-columns:1fr 1fr}}@media only screen and (max-width:767px){.header{padding:15px 20px}.nav-tabs{padding:5px 20px;margin-bottom:10px}.main-container{padding:10px 20px}.task-grid{grid-template-columns:1fr}.task-card{min-height:180px;padding:24px}.header-greeting{display:none}}.page-wrapper{max-width:900px;margin:0 auto;padding:15px 30px 100px;width:100%;box-sizing:border-box;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;-webkit-font-smoothing:antialiased}.minimal-header{display:flex;align-items:center;justify-content:space-between;padding:20px 0;margin-bottom:20px;position:relative;z-index:10;height:60px}.back-icon-btn{width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;border:1px solid rgba(0,0,0,.1)!important;background:#fff;box-shadow:0 2px 8px #0000000d;transition:all .2s;padding:0!important;outline:none;-webkit-appearance:none}.sticky-pill-wrapper{position:sticky;top:20px;z-index:100;display:flex;justify-content:center;margin-bottom:20px!important}.audio-pill{background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:10px 20px;border-radius:50px;box-shadow:0 4px 20px #00000014;display:flex;align-items:center;gap:20px;border:1px solid rgba(0,0,0,.05);width:100%;max-width:750px;transition:all .3s ease}.ghost-fab{width:44px;height:44px;border-radius:50%;background:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;transition:all .2s;border:3px solid transparent;padding:0;margin:0}.ghost-fab.play{border-color:#34c759;color:#34c759;box-shadow:0 4px 10px #34c75926}.ghost-fab.pause{border-color:#f39c12;color:#f39c12;box-shadow:0 4px 10px #f39c1226}.pill-content{flex:1;display:flex;flex-direction:column;justify-content:center;min-width:0}.pill-label{font-size:.75rem;text-transform:uppercase;color:#5f6368;letter-spacing:.5px;font-weight:600;margin-bottom:4px}.mini-progress{height:4px;background:#eee;border-radius:2px;overflow:hidden;width:100%}.mini-progress-bar{height:100%;background-color:#f39c12!important;width:0%;transition:width .1s linear}.pill-controls{display:flex;align-items:center;gap:12px;margin-left:10px;flex-shrink:0}.toggle-group{display:flex;align-items:center;gap:6px}.toggle-text{font-size:.85rem;font-weight:600;color:#666;white-space:nowrap}.switch{position:relative;display:block;width:36px;height:20px;margin:0}.switch input{opacity:0;width:0;height:0}.slider{position:absolute;cursor:pointer;inset:0;background-color:#ccc;transition:.4s;border-radius:20px}.slider:before{position:absolute;content:"";height:14px;width:14px;left:3px;bottom:3px;background-color:#fff;transition:.4s;border-radius:50%}input:checked+.slider{background-color:#2196f3}input:checked+.slider:before{transform:translate(16px)}.icon-btn{width:36px;height:36px;border-radius:50%;border:1px solid #eee;background:#fff;color:#666;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s;padding:0;flex-shrink:0}.icon-btn:hover{background:#f9f9f9;color:#333;border-color:#ddd}.icon-btn.red-hover{transition:all .2s}.icon-btn.red-hover:hover{color:#ff3b30!important;border-color:#ff3b30!important;background-color:#fff!important;box-shadow:0 2px 8px #ff3b3026}.journal-content{background:#fff;border-radius:24px;padding:40px;padding-top:30px!important;box-shadow:0 4px 30px #00000008;font-size:1.5rem;line-height:1.5;color:#333;min-height:400px}.playback-view p{line-height:1.5!important;margin-bottom:.6em!important;font-size:1.6rem;color:#444;margin-top:.6em}.playback-view p:first-child{margin-top:0!important}.word{cursor:pointer;padding:2px 4px;border-radius:4px;transition:background .2s;display:inline-block}.word:hover{background:#f0f0f0}.recording-mode-active .word{cursor:text!important;background:transparent!important}.recording-mode-active .word:hover{background:transparent!important}.highlight{background:#fff9c4!important;color:#000}.sentence-highlight{border-bottom:2px solid #F39C12}.translation-popup{position:absolute;background:#3e3e3e;color:#fff;padding:8px 12px;border-radius:8px;box-shadow:0 6px 16px #00000040;z-index:9999;font-size:.95rem;max-width:300px;pointer-events:none}.loading-container{height:100vh;display:flex;flexDirection:column;justifyContent:center;alignItems:center}.spinner{width:40px;height:40px;border:4px solid #f3f3f3;border-top:4px solid #3498db;border-radius:50%;animation:spin 1s linear infinite}.audio-pill.recording{border:2px solid #FF3B30;background:#fffbfb;transition:all .3s ease;justify-content:space-between}.ghost-fab.record{border-color:#ff3b30;color:#ff3b30;box-shadow:0 4px 10px #ff3b3026}.record-text-en{color:#ff3b30;font-weight:700;letter-spacing:.5px;font-size:.75rem;text-transform:uppercase;margin-bottom:4px}.record-text-cn{font-size:1rem;font-weight:600;color:#1f1f1f}.recording-status-container{display:flex;align-items:center;gap:16px;flex:1}.recording-text-group{text-align:left!important;align-items:flex-start!important}@keyframes breathing-red{0%{box-shadow:0 0 #ff3b3066;transform:scale(1)}50%{box-shadow:0 0 0 10px #ff3b3000;transform:scale(1.05)}to{box-shadow:0 0 #ff3b3000;transform:scale(1)}}.ghost-fab.record.breathing{animation:breathing-red 1.5s infinite;background-color:#fff0f0}.countdown-text{font-size:1.5rem;font-weight:700;color:#ff3b30;animation:fadeIn .2s ease}.ghost-fab.upload{border-color:#34c759;color:#34c759;box-shadow:0 4px 10px #34c75926}.ghost-fab.upload:disabled{border-color:#34c759!important;color:#34c759!important;background:#fff!important;opacity:1!important;cursor:default;box-shadow:none}@keyframes upload-move{0%{transform:translateY(0);opacity:1}30%{opacity:1}60%{transform:translateY(-15px);opacity:0}61%{transform:translateY(15px);opacity:0}to{transform:translateY(0);opacity:1}}.upload-arrow-anim{animation:upload-move 1.2s infinite cubic-bezier(.4,0,.2,1)}.audio-pill.recording .pill-controls{justify-content:flex-end}@media(max-width:768px){.audio-pill.recording{display:flex;flex-wrap:wrap;gap:15px;padding:20px}.recording-status-container{width:100%;margin-bottom:5px}.audio-pill.recording .pill-controls{width:100%;justify-content:flex-end;margin-left:0;border-top:1px solid rgba(0,0,0,.05);padding-top:10px}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes fadeSlideUp{0%{opacity:0;transform:translateY(15px)}to{opacity:1;transform:translateY(0)}}.view-transition{animation:fadeSlideUp .4s cubic-bezier(.16,1,.3,1) forwards}@media(max-width:768px){.page-wrapper{padding:15px 20px}.audio-pill:not(.recording){display:grid;grid-template-columns:1fr auto;grid-template-rows:auto auto;gap:15px 20px;padding:24px;height:auto;border-radius:24px;align-items:center;justify-items:stretch}.audio-pill:not(.recording) .pill-content{grid-column:1;grid-row:1;width:100%;text-align:center;margin:0}.pill-label{margin-bottom:8px}.audio-pill:not(.recording) .ghost-fab{grid-column:2;grid-row:1;width:56px;height:56px;margin:0}.audio-pill:not(.recording) .ghost-fab svg{width:28px!important;height:28px!important}.audio-pill:not(.recording) .pill-controls{grid-column:1 / -1;grid-row:2;width:100%;margin:0;padding-top:5px;justify-content:space-between}.audio-pill:not(.recording) .pill-controls>div:nth-child(3){margin:0 auto;height:24px;width:1px;background:#eee}.toggle-group{gap:8px}.icon-btn{margin-left:0}}.vocab-wrapper{max-width:900px;margin:0 auto;padding:20px 30px 100px;width:100%;box-sizing:border-box;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;-webkit-font-smoothing:antialiased}.vocab-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;height:60px}.back-icon-btn{width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;border:1px solid rgba(0,0,0,.1);background:#fff;box-shadow:0 2px 8px #0000000d;transition:all .2s;padding:0;outline:none}.back-icon-btn:hover{transform:scale(1.05);background:#f8f9fa}.css-arrow-left{width:12px;height:12px;border-top:3px solid #1F1F1F;border-right:3px solid #1F1F1F;transform:rotate(-135deg);margin-left:4px;display:block}.vocab-title{font-size:1rem;font-weight:600;color:#e0e0e0;background:#546e7a;padding:8px 16px;border-radius:20px;letter-spacing:.5px;box-shadow:0 2px 6px #00000026}.mode-card-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin-bottom:20px}.mode-card{background:#f8f9fa;border:2px solid transparent;border-radius:16px;padding:20px;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;color:#5f6368;transition:all .2s}.mode-card:hover{background:#e8f0fe}.mode-card.active{background:#e8f0fe;border-color:#1a73e8;color:#1a73e8}.mode-card.disabled-card{opacity:.5;cursor:not-allowed;filter:grayscale(1)}.mode-icon svg{width:32px;height:32px;fill:currentColor}.mode-title{font-weight:600;letter-spacing:.5px}.dictation-view{display:flex;flex-direction:column;align-items:center;width:100%}.audio-pill{background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:10px 25px;border-radius:50px;box-shadow:0 6px 24px #00000014;display:flex;align-items:center;justify-content:space-between;gap:20px;border:1px solid rgba(0,0,0,.05);width:100%;max-width:800px;margin-bottom:30px;height:80px}.ghost-fab{border-radius:50%;background:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;transition:all .2s;border:2px solid transparent;padding:0}.ghost-fab:active{transform:scale(.95)}.ghost-fab:disabled{opacity:.4;cursor:not-allowed;border-color:#eee!important;color:#ccc!important}.ghost-fab.main-play{width:56px;height:56px;border-width:3px}.ghost-fab.main-play.play{border-color:#34c759;color:#34c759;box-shadow:0 4px 12px #34c75933}.ghost-fab.main-play.pause{border-color:#f39c12;color:#f39c12;box-shadow:0 4px 12px #f39c1233}.ghost-fab.main-play svg{width:28px;height:28px;display:block}.play-index-num{font-size:1.6rem;font-family:Segoe UI,Roboto,sans-serif;color:#f39c12;font-weight:400;line-height:1}.ghost-fab.nav-btn{width:44px;height:44px;border:2px solid #ddd;color:#666}.ghost-fab.nav-btn:hover:not(:disabled){border-color:#1a73e8;color:#1a73e8;background:#f0f7ff}.ghost-fab.nav-btn svg{width:24px;height:24px;display:block}.ghost-fab.metal{width:44px;height:44px;background-color:#546e7a;border-color:#546e7a;color:#fff;box-shadow:0 4px 10px #546e7a4d}.ghost-fab.metal:hover{background-color:#455a64;border-color:#455a64}.ghost-fab.metal svg{width:22px;height:22px}.pill-content{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;min-width:0}.time-display{font-family:Menlo,Monaco,monospace;font-size:1.1rem;color:#5f6368;font-weight:500;white-space:nowrap;text-align:center;letter-spacing:-.5px}.loading-percent{text-align:center;color:#1a73e8;font-weight:700}.pill-controls{display:flex;align-items:center;gap:10px;flex-shrink:0}.switch-container{display:flex;align-items:center}.nav-btn-group{display:flex;gap:8px}.vocab-switch{position:relative;display:inline-block;width:40px;height:24px}.vocab-switch input{opacity:0;width:0;height:0}.vocab-slider{position:absolute;cursor:pointer;inset:0;background-color:#e0e0e0;transition:.4s;border-radius:24px}.vocab-slider:before{position:absolute;content:"";height:18px;width:18px;left:3px;bottom:3px;background-color:#fff;transition:.4s;border-radius:50%;box-shadow:0 2px 4px #0000001a}input:checked+.vocab-slider{background-color:#1a73e8}input:checked+.vocab-slider:before{transform:translate(16px)}.switch-label{font-size:.8rem;font-weight:600;color:#888;margin-right:6px}.marking-view{width:100%}.marking-controls{display:flex;justify-content:flex-end;align-items:center;gap:10px;margin-bottom:20px;padding-right:5px}.toggle-label-text{font-size:.9rem;color:#666;font-weight:500}.answers-list{display:grid;grid-template-columns:1fr 1fr;gap:15px;width:100%}.marking-row{display:flex;background:#fff;border-radius:12px;border:1px solid #e0e0e0;margin-bottom:0;overflow:hidden;transition:transform .2s;position:relative}.marking-view .marking-row{margin-bottom:15px}.marking-row:hover{transform:translateY(-2px);box-shadow:0 6px 16px #0000000f}.marking-row.read-only{cursor:default}.marking-row.clickable{cursor:pointer}.row-num{width:45px;background:#fafafa;color:#999;display:flex;align-items:center;justify-content:center;font-weight:600;border-right:1px solid #f0f0f0;flex-shrink:0;font-family:Menlo,monospace}.row-word{flex:1;padding:15px 20px;cursor:pointer;display:flex;flex-direction:column;justify-content:center;position:relative;background-color:#f8f9fa;min-width:0}.word-text{font-size:1.3rem;font-weight:700;color:#202124;margin-bottom:4px}.word-meta{font-size:.9rem;color:#5f6368}.word-syllables{position:absolute;top:12px;right:12px;background:#1a73e81a;color:#1a73e8;padding:2px 8px;border-radius:12px;font-size:.8rem;font-weight:600;font-family:Menlo,monospace;letter-spacing:.5px}.row-detail{flex:1.4;background:#fff;border-left:1px solid #eee;padding:18px 20px;font-size:.95rem;color:#444;cursor:pointer;line-height:1.6}.en-sentence{font-style:italic;color:#202124;margin-bottom:6px}.cn-trans{color:#888;font-size:.85rem;font-style:normal}.etymology-text{line-height:1.5;font-size:.9rem}.no-etymology{opacity:.5}.row-action{display:flex;align-items:center;padding:0 20px;border-left:1px solid #f0f0f0;cursor:pointer;transition:background .2s;background:#fff}.row-action:hover{background:#f9f9f9}.marking-circle{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1rem;font-weight:700;transition:all .2s}.marking-circle.default{border:2px solid #ddd;color:#ddd}.marking-circle.active{background:#ff4d4f;color:#fff;box-shadow:0 2px 8px #ff4d4f4d;border:2px solid #FF4D4F}.submit-section{padding:20px;background:#fff;text-align:center;border-top:1px solid #eee}.submit-btn{background:#1f1f1f;color:#fff;border:none;padding:12px 30px;border-radius:10px;font-size:1rem;font-weight:600;cursor:pointer;width:100%;max-width:300px;transition:opacity .2s}.submit-btn:disabled{opacity:.7;cursor:not-allowed}.submit-btn:hover:not(:disabled){opacity:.9}.v-loading{height:60vh;display:flex;flex-direction:column;justify-content:center;align-items:center;color:#999}.v-spinner{width:40px;height:40px;border:4px solid #f3f3f3;border-top:4px solid #1a73e8;border-radius:50%;animation:spin 1s linear infinite;margin-bottom:15px}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:768px){.row-detail{display:none}.answers-list{grid-template-columns:1fr}.audio-pill{display:grid;grid-template-columns:1fr auto;grid-template-rows:auto auto;gap:10px 15px;padding:20px;height:auto}.ghost-fab.main-play{order:2;margin:0 15px}.nav-btn-group{order:1}.play-index-num{font-size:1.2rem}.pill-content{order:4;width:100%;text-align:center;margin:10px 0}.pill-controls{order:5}.mode-card-grid{flex-direction:column;gap:10px}.marking-controls{justify-content:center;margin-bottom:15px}}.v-modal-overlay{position:fixed;inset:0;background-color:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);padding:20px}.v-modal-box{background:#fff;padding:25px;border-radius:16px;box-shadow:0 10px 30px #0003;max-width:400px;width:100%;animation:modalFadeIn .2s ease-out}.v-modal-text{font-size:1.05rem;color:#333;line-height:1.6;margin-bottom:25px;font-weight:500}.v-modal-actions{display:flex;justify-content:flex-end;gap:12px}.v-modal-btn{padding:10px 20px;border-radius:8px;font-size:.95rem;font-weight:600;cursor:pointer;border:none;transition:all .2s}.v-modal-btn.cancel{background:#f5f5f5;color:#666}.v-modal-btn.cancel:hover{background:#e0e0e0}.v-modal-btn.confirm{background:#1a73e8;color:#fff}.v-modal-btn.confirm:hover{background:#1557b0;box-shadow:0 2px 8px #1a73e84d}@keyframes modalFadeIn{0%{opacity:0;transform:translateY(20px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.admin-wrapper{max-width:1200px;margin:0 auto;padding:20px 30px 100px;width:100%;box-sizing:border-box;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;-webkit-font-smoothing:antialiased;color:#1f1f1f}.admin-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px;padding-bottom:20px;border-bottom:1px solid rgba(0,0,0,.06)}.admin-title{font-size:1.8rem;font-weight:700;color:#333;letter-spacing:-.5px}.admin-user-info{display:flex;align-items:center;gap:20px;font-size:.95rem;color:#666}.btn-logout{padding:8px 20px;border:1px solid #e0e0e0;background:#fff;border-radius:8px;cursor:pointer;font-weight:600;color:#555;transition:all .2s}.btn-logout:hover{background:#fff1f0;color:#ff4d4f;border-color:#ffccc7}.admin-grid{display:grid;grid-template-columns:1fr 1.5fr;gap:25px;margin-bottom:40px}.full-width-section{width:100%;margin-bottom:40px}.admin-card{background:#fff;border-radius:20px;padding:30px;box-shadow:0 4px 20px #00000008;border:1px solid rgba(0,0,0,.02)}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:25px;padding-bottom:15px;border-bottom:2px solid #F5F7FA}.card-header h2{margin:0;font-size:1.25rem;font-weight:700;color:#2c3e50}.form-group{margin-bottom:18px}.form-group label{display:block;margin-bottom:8px;font-weight:600;font-size:.9rem;color:#5f6368}.admin-input,.admin-select{width:100%;padding:12px 16px;border:1px solid #E0E0E0;border-radius:10px;font-size:.95rem;outline:none;box-sizing:border-box;font-family:inherit;transition:border-color .2s;background:#fafafa}.admin-input:focus,.admin-select:focus{border-color:#2196f3;background:#fff}.helper-text{font-size:.8rem;color:#999;margin-top:5px;display:block}.btn{padding:12px 24px;border:none;border-radius:10px;font-weight:600;cursor:pointer;transition:all .2s;font-size:.95rem;display:inline-flex;align-items:center;justify-content:center;gap:6px}.btn-primary{background:#1f1f1f;color:#fff;width:100%}.btn-primary:hover{background:#333;transform:translateY(-1px)}.btn-primary:disabled{background:#ccc;cursor:not-allowed;transform:none}.btn-search{background:#2196f3;color:#fff;width:auto}.btn-search:hover{background:#1976d2}.btn-action{padding:6px 12px;font-size:.85rem;border-radius:6px;margin-left:8px}.btn-edit{background:#e6f7ff;color:#1890ff;border:1px solid #91D5FF}.btn-edit:hover{background:#1890ff;color:#fff}.btn-danger{background:#fff1f0;color:#ff4d4f;border:1px solid #FFCCC7}.btn-danger:hover{background:#ff4d4f;color:#fff}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;margin-bottom:25px;background:#f8f9fa;padding:20px;border-radius:16px}.stat-item{text-align:center}.stat-val{font-size:1.8rem;font-weight:800;color:#1f1f1f;font-family:Segoe UI,Roboto,sans-serif}.stat-label{font-size:.8rem;color:#666;margin-top:4px;font-weight:500}.search-bar{display:flex;gap:10px;margin-bottom:20px}.admin-table{width:100%;border-collapse:collapse;font-size:.95rem}.admin-table th{text-align:left;color:#888;padding:15px;border-bottom:1px solid #eee;font-weight:500}.admin-table td{padding:15px;border-bottom:1px solid #f5f5f5;color:#333}.admin-table tr:last-child td{border-bottom:none}.admin-table tr:hover{background:#f9f9f9}.badge{padding:4px 10px;border-radius:12px;font-size:.75rem;font-weight:700}.badge-admin{background:#333;color:#fff}.badge-student{background:#e6f7ff;color:#1890ff}.badge-teacher{background:#fff7e6;color:#fa8c16}.task-list{display:flex;flex-direction:column;gap:10px;max-height:500px;overflow-y:auto}.task-item{display:flex;justify-content:space-between;align-items:center;padding:15px;border:1px solid #eee;border-radius:10px;background:#fff;transition:all .2s ease}.task-clickable{cursor:pointer}.task-clickable:hover{background-color:#fff1f0;border-color:#ffccc7;transform:translateY(-2px);box-shadow:0 4px 12px #0000000d}.task-status-done{color:#52c41a;font-weight:600;font-size:.85rem}.task-status-pending{color:#fa8c16;font-weight:600;font-size:.85rem}.modal-overlay{position:fixed;inset:0;background:#0006;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;justify-content:center;align-items:center;z-index:1000}.modal-content{background:#fff;padding:30px;border-radius:20px;width:420px;max-width:90%;box-shadow:0 10px 40px #0000001a}.modal-actions{display:flex;gap:12px;margin-top:25px}.btn-cancel{background:#f5f5f5;color:#666;width:100%}@media(max-width:900px){.admin-grid{grid-template-columns:1fr}}