.seat-arrangement-card{background:#fff;border-radius:20px;width:100%;padding:2rem;transition:all .3s;box-shadow:0 10px 25px #0000001a}.seat-settings{background:#f8f9fa;border-radius:15px;justify-content:center;align-items:center;gap:15px;margin-bottom:2rem;padding:1rem;transition:all .3s;display:flex}.seat-settings.collapsed{opacity:.7;margin-bottom:1rem;padding:.5rem}.input-group{flex-direction:column;align-items:center;display:flex}.input-group label{color:#636e72;margin-bottom:5px;font-size:.8rem}.input-group input{text-align:center;border:1px solid #dfe6e9;border-radius:8px;width:60px;padding:8px;font-size:1.1rem;font-weight:700}.x-mark{color:#b2bec3;margin-top:15px;font-size:1.2rem}.total-seats-badge{color:#fff;background:#a29bfe;border-radius:12px;margin-top:15px;margin-left:10px;padding:5px 10px;font-size:.9rem;font-weight:700}.name-input-section{flex-direction:column;align-items:center;gap:1rem;display:flex}.name-input-section label{color:#2d3436;font-weight:600}.people-count-input-wrapper{background:#f1f3f5;border-radius:15px;align-items:center;gap:10px;padding:10px 20px;display:flex}.people-count-input{text-align:center;color:#2d3436;border:2px solid #6c5ce7;border-radius:10px;outline:none;width:80px;padding:10px;font-size:1.5rem;font-weight:700}.unit-text{color:#636e72;font-size:1.2rem;font-weight:700}.mode-toggle-wrapper{align-items:center;gap:10px;margin-bottom:5px;display:flex}.mode-text{color:#2d3436;font-size:.9rem;font-weight:600}.switch-label{width:40px;height:24px;display:inline-block;position:relative}.switch-label input{opacity:0;width:0;height:0}.slider{cursor:pointer;background-color:#ccc;border-radius:24px;transition:all .4s;position:absolute;inset:0}.slider:before{content:"";background-color:#fff;border-radius:50%;width:18px;height:18px;transition:all .4s;position:absolute;bottom:3px;left:3px}input:checked+.slider{background-color:#6c5ce7}input:checked+.slider:before{transform:translate(16px)}.hint-text{color:#b2bec3;margin-bottom:10px;font-size:.9rem}.drag-hint{color:#fdcb6e;margin-bottom:10px;font-size:.9rem;font-weight:700}.shuffle-btn{color:#fff;cursor:pointer;background:linear-gradient(135deg,#6c5ce7,#a29bfe);border:none;border-radius:12px;width:100%;max-width:400px;padding:1rem;font-size:1.1rem;font-weight:700;transition:transform .2s;box-shadow:0 4px 10px #6c5ce74d}.shuffle-btn:hover{transform:translateY(-2px);box-shadow:0 6px 15px #6c5ce766}.seat-result-section{flex-direction:column;align-items:center;gap:1.5rem;width:100%;animation:.5s fadeIn;display:flex}.blackboard{color:#fff;text-align:center;background:#00b894;border:4px solid #574b90;border-radius:8px;width:80%;margin-bottom:10px;padding:10px;font-weight:700;box-shadow:0 4px #3e366e}.seat-grid{gap:10px;width:100%;display:grid}.seat-item{aspect-ratio:4/3;cursor:grab;-webkit-user-select:none;user-select:none;background:#fff;border:1px solid #dfe6e9;border-radius:10px;flex-direction:column;justify-content:center;align-items:center;transition:all .3s;display:flex;position:relative;box-shadow:0 2px 5px #0000000d}.seat-item.drag-over-target{z-index:5;transform:scale(1.05);background-color:#e3e0ff!important;border:3px dashed #6c5ce7!important}.seat-item:active{cursor:grabbing;z-index:10;transform:scale(1.05);box-shadow:0 10px 20px #00000026}.seat-item.occupied{background:#fdfbf7;border-color:#fab1a0}.seat-item.empty{opacity:.9;background:#f1f3f5;border:2px dashed #dfe6e9}.desk-wood{opacity:.2;background:#e1b12c;border-radius:4px;width:80%;height:30%;position:absolute;top:5px;left:10%}.student-number{color:#2d3436;z-index:1;background:#fff;border:2px solid #fab1a0;border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;font-size:1.5rem;font-weight:800;display:flex;box-shadow:0 2px 5px #0000001a}.empty-seat-mark{color:#ccc;z-index:1;font-size:.8rem}.result-actions{gap:10px;margin-top:20px;display:flex}.retry-btn,.reset-btn{cursor:pointer;border:none;border-radius:20px;padding:10px 20px;font-weight:600;transition:background .2s}.retry-btn{color:#fff;background:#6c5ce7}.reset-btn{color:#636e72;background:#dfe6e9}.retry-btn:hover{background:#5649c0}.reset-btn:hover{color:#fff;background:#b2bec3}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}