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p{color:#ffffffb3;margin:0;font-size:.9rem}.empty-course-state{text-align:center;flex-direction:column;justify-content:center;align-items:center;height:100%;padding:80px 20px;display:flex}.empty-course-state .icon{filter:drop-shadow(0 0 20px #e5c10066);margin-bottom:24px;font-size:4rem}.empty-course-state h2{margin-bottom:12px;font-size:2rem}.practice-layout{flex-direction:column;align-items:center;width:100%;max-width:900px;margin:0 auto;display:flex}.practice-setup{border:1px solid var(--border-glass);background:#0000004d;border-radius:20px;width:100%;padding:40px;box-shadow:0 10px 30px #0003}.practice-setup h2{color:#fff;text-align:center;margin:0 0 32px;font-family:Outfit,sans-serif;font-size:2rem}.form-row{grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:32px;display:grid}@media (max-width:768px){.form-row{grid-template-columns:1fr}}.form-group label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:8px;font-size:.9rem;font-weight:600;display:block}.form-group select,.form-group input{border:1px solid var(--border-glass);color:#fff;background:#ffffff0d;border-radius:12px;outline:none;width:100%;padding:14px 16px;font-family:Inter,sans-serif;font-size:1rem;transition:all .2s}.form-group select{cursor:pointer;appearance:none;background-image:url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");background-position:right 16px center;background-repeat:no-repeat;background-size:16px;padding-right:40px}.form-group select:focus,.form-group select:hover,.form-group input:focus{border-color:var(--gold-primary);background-color:#ffffff14}.form-group select option{background-color:var(--bg-dark);color:#fff}.btn-generate{border:1px solid var(--gold-primary);width:100%;color:var(--gold-primary);cursor:pointer;background:linear-gradient(135deg,#ffd60033,#ffd6001a);border-radius:12px;justify-content:center;align-items:center;gap:10px;padding:16px;font-size:1.1rem;font-weight:600;transition:all .3s;display:flex;box-shadow:0 0 20px #ffd6001a}.btn-generate:hover{background:linear-gradient(135deg,#ffd6004d,#ffd60033);transform:translateY(-2px);box-shadow:0 0 30px #ffd60033}.btn-generate:disabled{opacity:.6;cursor:not-allowed;transform:none}.spinner{border:3px solid #ffd60033;border-top-color:var(--gold-primary);border-radius:50%;width:24px;height:24px;animation:1s linear infinite spin;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}.quiz-options{flex-direction:column;gap:12px;margin-top:16px;display:flex}.quiz-option{cursor:pointer;color:#ffffffe6;text-align:left;background:#0000004d;border:1px solid #ffffff1a;border-radius:12px;padding:16px;font-size:1rem;transition:all .2s}.quiz-option:hover{background:#ffffff0d;border-color:#fff3;transform:translateY(-1px)}.quiz-option.selected{border-color:var(--gold-primary);color:#fff;background:#ffd60026;box-shadow:0 0 15px #ffd6001a}.system-selector{scrollbar-width:none;gap:12px;margin-bottom:24px;padding-bottom:16px;display:flex;overflow-x:auto}.system-selector::-webkit-scrollbar{display:none}.system-btn{color:#ffffffb3;cursor:pointer;white-space:nowrap;background:#0000004d;border:1px solid #ffffff1a;border-radius:20px;padding:10px 20px;font-weight:500;transition:all .3s}.system-btn:hover{background:#ffffff1a;border-color:#ffffff4d}.system-btn.active{border-color:var(--gold-primary);color:var(--gold-primary);background:#ffd60026;box-shadow:0 0 10px #ffd60033}.labeling-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;margin-bottom:24px;display:flex}.labeling-score{color:var(--gold-primary);align-items:center;gap:16px;font-weight:700;display:flex}.labeling-layout{grid-template-columns:260px 1fr 260px;align-items:start;gap:24px;display:grid}@media (max-width:1024px){.labeling-layout{grid-template-columns:1fr}}.labels-bank,.answer-grid{border:1px solid var(--border-glass);background:#0003;border-radius:16px;min-height:300px;padding:20px}.labels-bank h4,.answer-grid h4{color:#fff;text-align:center;margin-top:0;margin-bottom:16px;font-size:1.1rem}.labels-list{flex-direction:column;gap:12px;display:flex}.draggable-label{color:#fff;cursor:grab;-webkit-user-select:none;user-select:none;text-align:center;background:#ffffff0d;border:1px solid #fff3;border-radius:8px;padding:12px 16px;font-weight:500;transition:all .2s}.draggable-label:active,.draggable-label.dragging{cursor:grabbing;opacity:.5;transform:scale(.95)}.draggable-label:hover{border-color:var(--gold-primary);background:#ffffff1a}.diagram-display{flex-direction:column;align-items:center;gap:16px;display:flex}.diagram-wrapper{border:1px solid var(--border-glass);background:#ffffff0d;border-radius:16px;justify-content:center;align-items:center;width:100%;min-height:400px;padding:24px;display:flex}.diagram-img{filter:drop-shadow(0 0 10px #ffffff1a);border-radius:8px;max-width:100%;height:auto;max-height:450px}.diagram-hint{color:#ffffff80;text-align:center;font-size:.9rem;font-style:italic}.answer-slots{flex-direction:column;gap:12px;display:flex}.answer-slot{background:#0000004d;border-radius:8px;align-items:center;gap:12px;padding:8px;transition:all .3s;display:flex}.slot-number{color:var(--gold-primary);background:#ffffff1a;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:30px;height:30px;font-size:.9rem;font-weight:700;display:flex}.slot-dropzone{border:2px dashed #fff3;border-radius:6px;flex:1;justify-content:center;align-items:center;height:45px;transition:all .3s;display:flex}.dropzone-hint{color:#ffffff4d;font-size:.85rem}.answer-slot.drag-over .slot-dropzone{border-color:var(--gold-primary);background:#ffd6001a;transform:scale(1.02)}.answer-slot.filled.correct .slot-dropzone{background:#4caf501a;border-style:solid;border-color:#4caf50}.placed-label{font-size:.95rem;font-weight:500}.placed-label.correct{color:#4caf50}.answer-reveal{color:#3b82f6;font-weight:500}@keyframes shakeSlot{0%,to{transform:translate(0)}25%{transform:translate(-5px)}75%{transform:translate(5px)}}.shake{animation:.4s ease-in-out shakeSlot}.btn-outline{color:#fff;cursor:pointer;background:0 0;border:1px solid #fff3;border-radius:8px;padding:8px 16px;font-size:.9rem;transition:all .2s}.btn-outline:hover{background:#ffffff14;border-color:#fff}.feedback-area{text-align:center;border-radius:8px;margin-top:24px;padding:16px;font-weight:700;animation:.3s fadeInTab}.feedback-area.success{color:#4caf50;background:#4caf501a;border:1px solid #4caf504d}.feedback-area.error{color:#f44336;background:#f443361a;border:1px solid #f443364d}.tutor-layout{border:1px solid var(--border-glass);background:#0000004d;border-radius:20px;flex-direction:column;width:100%;max-width:1000px;height:700px;margin:0 auto;display:flex;overflow:hidden;box-shadow:0 10px 40px #0003}.tutor-header{border-bottom:1px solid var(--border-glass);background:#ffffff05;align-items:center;gap:12px;padding:20px 24px;display:flex}.tutor-avatar{background:linear-gradient(135deg, var(--gold-primary), var(--gold-glow));border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;font-size:1.2rem;display:flex;box-shadow:0 0 15px #e5c1004d}.tutor-header-text h3{color:#fff;margin:0;font-family:Outfit,sans-serif;font-size:1.1rem}.tutor-header-text p{color:#22c55e;align-items:center;gap:6px;margin:2px 0 0;font-size:.8rem;display:flex}.tutor-header-text p:before{content:"";background:#22c55e;border-radius:50%;width:6px;height:6px;box-shadow:0 0 6px #22c55e}.chat-container{flex-direction:column;flex:1;gap:16px;padding:24px;display:flex;overflow-y:auto}.chat-msg{gap:12px;max-width:85%;display:flex}.chat-msg.bot{align-self:flex-start}.chat-msg.user{flex-direction:row-reverse;align-self:flex-end}.chat-bubble{border-radius:20px;padding:16px 20px;font-size:.95rem;line-height:1.5;position:relative}.chat-msg.bot .chat-bubble{border:1px solid var(--border-glass);color:#ffffffe6;background:#ffffff0d;border-bottom-left-radius:4px}.chat-msg.user .chat-bubble{color:#fff;background:#e5c10026;border:1px solid #e5c1004d;border-bottom-right-radius:4px}.chat-bubble p{margin-top:0;margin-bottom:10px}.chat-bubble p:last-child{margin-bottom:0}.chat-bubble ul,.chat-bubble ol{margin-top:5px;padding-left:20px}.chat-bubble code{background:#0000004d;border-radius:4px;padding:2px 6px;font-family:monospace}.chat-bubble pre{background:#00000080;border-radius:8px;padding:10px;overflow-x:auto}.chat-input-area{border-top:1px solid var(--border-glass);background:#0003;gap:12px;padding:20px 24px;display:flex}.chat-input{border:1px solid var(--border-glass);color:#fff;background:#ffffff0d;border-radius:100px;outline:none;flex:1;padding:16px 24px;font-family:Inter,sans-serif;font-size:1rem;transition:all .2s}.chat-input:focus{border-color:var(--gold-primary);background:#ffffff14;box-shadow:0 0 15px #e5c1001a}.btn-send{background:linear-gradient(135deg, var(--gold-primary), var(--gold-glow));color:#000;cursor:pointer;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:54px;height:54px;transition:all .2s;display:flex;box-shadow:0 4px 15px #e5c10033}.btn-send:hover{transform:scale(1.05);box-shadow:0 6px 20px #e5c10066}.btn-send:disabled{opacity:.6;cursor:not-allowed;transform:none}.table-responsive{width:100%;margin:20px 0;overflow-x:auto}.epi-table{border-collapse:collapse;border:1px solid var(--border-glass);background:#0003;border-radius:8px;width:100%;overflow:hidden}.epi-table th,.epi-table td{text-align:left;border-bottom:1px solid var(--border-glass);padding:12px 16px}.epi-table th{color:var(--gold-primary);background:#ffffff08;font-weight:600}.calc-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin:24px 0;display:grid}.calc-group{border:1px solid var(--border-glass);background:#ffffff05;border-radius:12px;flex-direction:column;gap:8px;padding:16px;display:flex}.calc-group label{color:var(--text-muted);font-size:.85rem;font-weight:600}.calc-input{color:#fff;background:#0000004d;border:1px solid #fff3;border-radius:8px;outline:none;padding:10px;font-family:monospace;font-size:1.1rem;transition:all .2s}.calc-input:focus{border-color:var(--gold-primary)}.calc-input.valid{background:#4caf500d;border-color:#4caf50}.calc-input.invalid{background:#f443360d;border-color:#f44336}.case-intro{text-align:center;flex-direction:column;align-items:center;gap:16px;display:flex}.case-icon{font-size:3.5rem}.options-grid{grid-template-columns:1fr;gap:12px;margin:20px 0;display:grid}.option-btn{border:1px solid var(--border-glass);color:#fff;cursor:pointer;text-align:left;background:#ffffff08;border-radius:12px;padding:16px;font-size:1rem;transition:all .2s}.option-btn:hover{background:#ffffff14;border-color:#ffffff4d}.option-btn.correct{color:#fff;background:#4caf5026;border-color:#4caf50}.option-btn.wrong{color:#fff;background:#f4433626;border-color:#f44336}.feedback{border-radius:8px;margin-top:16px;padding:16px;font-weight:500}.feedback.success{color:#4caf50;background:#4caf501a;border:1px solid #4caf504d;justify-content:space-between;align-items:center;display:flex}.feedback.error{color:#f44336;background:#f443361a;border:1px solid #f443364d}.tip-box{color:#ffffffe6;background:#2196f314;border-left:4px solid #2196f3;border-radius:0 8px 8px 0;margin:16px 0;padding:16px;line-height:1.5}.tip-box strong{color:#2196f3}.search-container{align-items:center;width:100%;max-width:540px;margin:0 auto 2.5rem;display:flex;position:relative}.search-input{color:#fff;background:#ffffff0a;border:1px solid #ffffff1a;border-radius:999px;width:100%;padding:14px 16px 14px 44px;font-size:1rem;transition:all .25s;box-shadow:inset 0 1px 3px #0000001f}.search-input:focus{border-color:var(--gold-primary);background:#ffffff14;outline:none;box-shadow:0 0 0 2px #e5c1001a}.search-input::placeholder{color:#fff6}.search-icon{width:18px;height:18px;color:var(--text-muted);pointer-events:none;position:absolute;left:16px}.filter-buttons{flex-wrap:wrap;justify-content:center;gap:12px;width:100%;max-width:900px;margin:1.5rem auto 2.5rem;display:flex}.filter-btn{color:var(--text-secondary);cursor:pointer;background:#ffffff08;border:1px solid #ffffff14;border-radius:999px;align-items:center;gap:6px;padding:10px 20px;font-size:.92rem;font-weight:500;transition:all .25s cubic-bezier(.4,0,.2,1);display:inline-flex;box-shadow:0 4px 12px #0000001a}.filter-btn:hover{background:#ffffff14;border-color:#fff3;transform:translateY(-2px)}.filter-btn.active{color:var(--gold-primary);border-color:var(--gold-primary);background:#e5c10026;font-weight:600;box-shadow:0 0 15px #e5c10026}