*{margin:0;padding:0;box-sizing:border-box}body{font-family:Arial,sans-serif;background-color:#f5f7fa;overflow:hidden}.login-container{width:100%;min-height:100vh;display:none;align-items:center;justify-content:center;padding:20px;background:linear-gradient(135deg,#667eea,#764ba2);z-index:9999;position:relative}.login-box{display:flex;position:relative;width:100%;max-width:700px;min-height:360px;background:#fff;border-radius:12px;box-shadow:0 10px 30px #0000001a;overflow:hidden;z-index:10000}.left-section{flex:1;background:#00e1ff;display:flex;align-items:center;justify-content:center;padding:30px;color:#fff;z-index:10001}.logo-container{text-align:center;z-index:10002}.logo{margin-bottom:20px}.logo-text h2{font-size:1.2rem;font-weight:600;z-index:10003}.logo-text img{width:100px;height:100px;margin-bottom:10px;z-index:10004}.right-section{flex:1;padding:40px 30px;display:flex;flex-direction:column;justify-content:space-between;z-index:10005}.login-form{text-align:center;z-index:10006}.login-form h1{font-size:1.5rem;margin-bottom:8px;color:#333;font-weight:500;z-index:100}.login-form p{color:#666;margin-bottom:30px;font-size:.8rem;z-index:100}.form-group{margin-bottom:15px;text-align:left;z-index:100}.input-wrapper{position:relative;border:1px solid #d9d9d9;border-radius:4px;transition:all .3s;background-color:#fff;z-index:100;display:flex;align-items:center}.input-wrapper:focus-within{border-color:#1890ff;box-shadow:0 0 0 2px #1890ff33}.phone-input:before{content:"📱";color:#666;font-size:16px;z-index:100;pointer-events:none;display:inline-block;width:20px;text-align:center;margin-left:6px}.password-input:before{content:"🔒";color:#666;font-size:16px;z-index:100;pointer-events:none;display:inline-block;width:20px;text-align:center;margin-left:6px}.input-icon{color:#666;font-size:16px;z-index:100;pointer-events:none;display:inline-block;width:20px;text-align:center;margin:0 12px;flex-shrink:0}.eye-icon{font-size:16px;color:#999;z-index:10013;display:inline-block;width:20px;text-align:center}.toggle-password{background:transparent;border:none;cursor:pointer;padding:0 12px;display:flex;align-items:center;justify-content:center;z-index:10014}.form-row{display:flex;gap:15px;margin-bottom:15px}.form-row .form-group{flex:1;margin-bottom:0}.form-input{flex:1;padding:12px;border:none;border-radius:4px;font-size:13px;outline:none;min-width:0}.form-actions{display:flex;gap:10px;margin-top:30px}.copyright{margin-top:40px;text-align:center;font-size:.7rem;color:#999;background:#f5f5f5;padding:8px;border-radius:4px;align-self:center;width:100%}.dashboard{min-height:100vh;background-color:#f5f7fa;display:none;flex-direction:column;font-family:Arial,sans-serif}.top-nav{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:0 30px;height:60px;display:flex;justify-content:space-between;align-items:center;box-shadow:0 2px 4px #0000001a}.top-nav-left{display:flex;align-items:center}.top-nav-left h1{font-size:20px;font-weight:700;margin:0}.top-nav-left img{width:30px;height:30px;margin-right:10px}.top-nav-right{display:flex;align-items:center}.user-avatar-container{position:relative;cursor:pointer}.user-avatar{width:40px;height:40px;border-radius:50%;background-color:#fff3;display:flex;justify-content:center;align-items:center;cursor:pointer;overflow:hidden;transition:transform .3s ease}.user-avatar:hover{transform:scale(1.05)}.user-avatar img{width:100%;height:100%;object-fit:cover;border-radius:50%}.user-avatar span{font-size:20px}.user-dropdown{position:absolute;top:100%;right:0;margin-top:10px;background-color:#fff;border-radius:8px;box-shadow:0 4px 12px #00000026;min-width:150px;opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;transition-delay:0s,0s;z-index:1000;border:1px solid #e0e0e0}.user-avatar-container:hover .user-dropdown{opacity:1;visibility:visible;transition-delay:0s,0s;animation:slideDown .2s ease-in-out}.user-avatar-container:not(:hover) .user-dropdown{transition-delay:.02s,.02s}.dropdown-item{padding:10px 15px;cursor:pointer;transition:background-color .3s ease;font-size:14px;color:#333;border-bottom:1px solid #f0f0f0;text-align:center}.dropdown-item:last-child{border-bottom:none;border-radius:0 0 8px 8px}.dropdown-item:hover{background-color:#f5f7fa;color:#667eea}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.dashboard-container{display:flex;flex:1;height:calc(100vh - 60px);gap:20px;padding:0 20px 0 0}.side-nav{width:200px;background-color:#fff;border:1px solid #e0e0e0;border-radius:8px;padding:20px 0;display:flex;flex-direction:column;justify-content:space-between;box-shadow:0 2px 4px #0000001a}.nav-item{display:flex;flex-direction:column;align-items:flex-start;cursor:pointer;transition:all .3s ease;border-left:3px solid transparent}.nav-item:hover{background-color:#f5f7fa}.nav-item.active{background-color:#f0f4ff;border-left-color:#667eea;color:#667eea}.nav-item-content{display:flex;align-items:center;padding:10px 20px;width:100%}.nav-item.has-dropdown{position:relative}.nav-dropdown{display:none;width:100%;background-color:#fff;border-right:1px solid #e0e0e0;box-shadow:0 2px 4px #0000001a;z-index:100;overflow:hidden;max-height:0;transition:max-height .3s ease-in-out}.nav-item.has-dropdown.active .nav-dropdown{display:block;max-height:200px;animation:slideDown .2s ease-in-out}.nav-subitem{display:flex;align-items:center;justify-content:flex-end;padding:10px 20px;cursor:pointer;transition:all .3s ease;background-color:#fff;border-left:3px solid transparent;color:#333;text-align:center;width:100%}.nav-subitem:hover{background-color:#f5f7fa;color:#667eea}.nav-subitem.active{background-color:#f0f4ff;border-left-color:#667eea;color:#667eea}.nav-icon{margin-right:10px;font-size:18px}.nav-text{flex:1;font-size:14px;font-weight:500}.nav-arrow{font-size:12px;color:#999}.version-info{padding:5px;font-size:12px;color:#999;text-align:center;border-top:1px solid #e0e0e0;margin-top:auto;line-height:1.5}.main-content{width:100%;height:calc(100vh - 100px);margin:15px auto;padding:5px 30px;display:flex;flex-direction:column;background-color:#fff;border-radius:8px;box-shadow:0 2px 4px #0000001a;overflow-y:auto}.page-content{width:100%}.page-header{margin-bottom:30px}.page-header h2{font-size:20px;font-weight:700;color:#333;margin:0}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:30px}.stat-card{background-color:#fff;padding:30px;border-radius:8px;box-shadow:0 2px 4px #0000001a;text-align:center;transition:transform .3s ease,box-shadow .3s ease}.stat-card:hover{transform:translateY(-5px);box-shadow:0 4px 8px #00000026}.stat-number{font-size:36px;font-weight:700;color:#667eea;margin:0 0 10px}.stat-label{font-size:14px;color:#666;margin:0}.footer-copyright{position:fixed;bottom:0;left:0;right:0;text-align:center;padding:10px;font-size:12px;color:#fffc;background-color:transparent;z-index:10}.login-loading{display:none;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);flex-direction:column;align-items:center;justify-content:center;background-color:#fffffff2;padding:20px 40px;border-radius:8px;box-shadow:0 4px 12px #00000026;animation:fadeIn .3s ease-in-out;z-index:10010}.loading-spinner{width:40px;height:40px;border:4px solid rgba(102,126,234,.3);border-radius:50%;border-top:4px solid #667eea;animation:spin 1s linear infinite;margin-bottom:10px}.login-loading p{color:#667eea;font-size:14px;font-weight:500;margin:0;animation:pulse 1.5s ease-in-out infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.user-info-modal{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#00000080;display:none;justify-content:center;align-items:center;z-index:10000;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);animation:fadeIn .3s ease-in-out}.user-info-content{background:#fff;border-radius:12px;width:90%;max-width:500px;box-shadow:0 10px 30px #00000026;animation:slideIn .4s cubic-bezier(.175,.885,.32,1.275);overflow:hidden}.user-info-header{background:linear-gradient(135deg,#667eea,#764ba2);padding:15px 20px;display:flex;justify-content:space-between;align-items:center}.user-info-header h3{margin:0;font-size:18px;font-weight:700;color:#fff}.user-info-body{padding:30px;display:flex;flex-direction:column;gap:20px}.form-row{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.user-info-body .form-group{margin-bottom:0}.user-info-body .form-group.full-width{width:100%}.user-info-body label{display:block;margin-bottom:6px;font-size:14px;font-weight:500;color:#333}.user-info-body .form-input{width:100%;padding:8px 12px;border:1px solid #d9d9d9;border-radius:4px;font-size:14px;transition:all .3s ease}.user-info-body .form-input:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 2px #667eea33}.user-info-body .form-textarea{width:100%;padding:8px 12px;border:1px solid #d9d9d9;border-radius:4px;font-size:14px;resize:vertical;min-height:80px;transition:all .3s ease}.user-info-body .form-textarea:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 2px #667eea33}.user-info-footer{padding:20px 30px;background-color:#f9f9f9;border-top:1px solid #e0e0e0;display:flex;justify-content:flex-end;gap:10px}@media(max-width:768px){.login-box{flex-direction:column}.left-section{padding:30px}.right-section{padding:40px 30px}.form-actions{flex-direction:column}.btn{width:100%}.top-nav{padding:0 20px}.top-nav-left h1{font-size:18px}.side-nav{width:180px}.nav-item{padding:12px 15px}.nav-text{font-size:13px}.main-content{padding:20px}.stats{grid-template-columns:repeat(2,1fr)}.stat-card{padding:20px}.stat-number{font-size:28px}}@media(max-width:480px){.login-container{padding:10px}.left-section,.right-section{padding:20px}.login-form h1{font-size:1.5rem}.form-input{padding:10px 10px 10px 32px}.btn{padding:10px}.copyright{margin-top:40px}.top-nav{padding:0 15px}.top-nav-left h1{font-size:16px}.dashboard-container{flex-direction:column}.side-nav{width:100%;height:auto;flex-direction:row;padding:10px 0;overflow-x:auto;border-right:none;border-bottom:1px solid #e0e0e0}.nav-item{flex-direction:column;padding:10px 15px;border-left:none;border-bottom:3px solid transparent}.nav-item.active{border-left:none;border-bottom-color:#667eea}.nav-text{font-size:12px;margin-top:5px}.nav-arrow,.version-info{display:none}.main-content{padding:15px;flex:1}.stats{grid-template-columns:1fr}.stat-card{padding:15px}.stat-number{font-size:24px}}.modal{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#00000080;display:none;justify-content:center;align-items:center;z-index:11000;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);animation:fadeIn .3s ease-in-out}.modal-content{background:#fff;border-radius:8px;width:90%;max-width:300px;box-shadow:0 4px 12px #00000026;animation:slideIn .4s cubic-bezier(.175,.885,.32,1.275);border:1px solid #e0e0e0;overflow:hidden}.modal-header{padding:10px 15px;border-bottom:1px solid #e0e0e0;display:flex;align-items:center;justify-content:flex-start;background:linear-gradient(135deg,#667eea,#764ba2);width:100%;box-sizing:border-box}.modal-header h3{margin:0;font-size:16px;font-weight:500;color:#fff}.modal-body{padding:20px;display:flex;align-items:flex-start;gap:15px;line-height:1.5}.modal-icon{font-size:32px;flex-shrink:0;margin-top:2px}#message-modal-message{font-size:14px;color:#333;text-align:left;line-height:1.6;margin:0;flex:1}.modal-footer{padding:15px 20px;border-top:1px solid #e0e0e0;display:flex;justify-content:flex-end;background:#f9f9f9;gap:12px}.modal-footer .btn-primary{background-color:#6f42c1;color:#fff;border:none;padding:4px;border-radius:4px;cursor:pointer;font-size:12px;font-weight:500;transition:background-color .3s ease}.modal-footer .btn-primary:hover{background-color:#5a32a3}.modal-footer .btn-secondary{background-color:#6c757d;color:#fff;border:none;padding:4px;border-radius:4px;cursor:pointer;font-size:12px;font-weight:500;transition:background-color .3s ease}.modal-footer .btn-secondary:hover{background-color:#5a6268}#message-modal{z-index:11002}#confirm-modal{z-index:11001}#temp-student-modal{z-index:99999!important}#temp-student-modal .search-box{width:100%}#temp-student-modal #temp-student-search{width:100%;padding:12px 15px;border:2px solid #ddd;border-radius:8px;font-size:16px;box-sizing:border-box;background:#fff;color:#333}#temp-student-modal #temp-student-search:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea33}#attendance-modal{z-index:11000}#attendance-modal .attendance-table{max-height:300px;overflow-y:auto}#attendance-modal .attendance-table table{width:100%}#message-modal .modal-content{max-width:300px;width:90%;max-height:600px;overflow-y:auto}#message-modal .modal-body{padding:20px;display:flex;align-items:center;gap:15px}#message-modal .modal-body>div{max-height:400px;overflow-y:auto;flex:1}#message-modal table{width:100%;border-collapse:collapse;border:1px solid #e0e0e0}#message-modal th{padding:10px;background:#f9f9f9;border:1px solid #e0e0e0;margin:0;white-space:nowrap;text-align:center}#message-modal td{padding:10px;border:1px solid #e0e0e0;text-align:center}#suspended-students-modal .modal-content{max-height:600px;overflow-y:auto;max-width:800px;width:90%}#suspended-students-modal .modal-body{padding:20px;display:block}#suspended-students-modal .modal-body>div{max-height:400px;overflow-y:auto}#suspended-students-modal table{width:100%;border-collapse:collapse;border:1px solid #e0e0e0}#suspended-students-modal th{padding:10px;background:#f9f9f9;border:1px solid #e0e0e0;margin:0;white-space:nowrap;text-align:center}#suspended-students-modal td{padding:10px;border:1px solid #e0e0e0;text-align:center}#renewable-students-modal .modal-content{max-height:400px;max-width:800px;width:90%}#renewable-students-modal .modal-body{padding:20px;display:block}#renewable-students-modal .modal-body>div{max-height:260px;overflow-y:auto}#renewable-students-modal table{width:100%;border-collapse:collapse;border:1px solid #e0e0e0}#renewable-students-modal th{padding:10px;background:#f9f9f9;border:1px solid #e0e0e0;margin:0;white-space:nowrap;text-align:center}#renewable-students-modal td{padding:10px;border:1px solid #e0e0e0;text-align:center}#renewable-students-modal .btn-renew{background-color:#6f42c1;color:#fff;border:none;padding:4px 8px;border-radius:4px;cursor:pointer;font-size:12px;font-weight:500;transition:background-color .3s ease}#renewable-students-modal .btn-renew:hover{background-color:#5a32a3}#suspend-modal .modal-content{max-width:600px;width:90%}#suspend-modal .modal-body{display:block;padding:20px}#suspend-modal .form-group{margin-bottom:15px}#suspend-modal .form-group label{display:block;margin-bottom:5px;font-size:14px;font-weight:500;color:#333}#suspend-modal .form-input{width:100%;padding:8px 12px;border:1px solid #d9d9d9;border-radius:4px;font-size:14px;transition:all .3s ease}#suspend-modal .form-input:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 2px #667eea33}#suspend-modal .form-input[type=date]{height:36px}#suspend-modal .form-row{display:flex;gap:15px;margin-bottom:15px}#suspend-modal .form-row .form-group{flex:1;margin-bottom:0}.error-modal .modal-header{background:linear-gradient(135deg,#667eea,#764ba2)}#charge-modal .modal-content{max-width:500px;width:90%}#charge-modal .modal-body{display:block;padding:20px}#charge-modal .charge-form-grid{display:flex;gap:15px;margin-bottom:20px;align-items:flex-start}#charge-modal .charge-form-group{flex:1;min-width:150px}#charge-modal .charge-form-group label{display:block;margin-bottom:8px;font-size:14px;font-weight:500;color:#333}#charge-modal .form-input{width:80%;padding:8px 12px;border:1px solid #d9d9d9;border-radius:4px;font-size:14px;transition:all .3s ease;box-sizing:border-box;height:36px;line-height:36px}#charge-modal .form-input[type=number]{height:36px;line-height:36px;padding:0 12px}#charge-modal select.form-input{height:36px;line-height:36px;padding:0 12px;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml;charset=US-ASCII,%3Csvg xmlns='http://www.w3.org/2000/svg' width='292.4' height='292.4'%3E%3Cpath fill='%23333' d='M287 69.4a17.6 17.6 0 0 0-13-5.4H18.4c-5 0-9.3 1.8-12.9 5.4A17.6 17.6 0 0 0 0 82.2c0 5 1.8 9.3 5.4 12.9l128 127.9c3.6 3.6 7.8 5.4 12.8 5.4s9.2-1.8 12.8-5.4L287 95c3.5-3.5 5.4-7.8 5.4-12.8 0-5-1.9-9.2-5.5-12.8z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;background-size:12px}#charge-modal .form-input:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 2px #667eea33}#charge-modal .error-message{color:#ff4d4f;font-size:12px;margin-top:4px;min-height:16px}#charge-modal .modal-footer{padding:15px 20px;gap:15px}#charge-modal .modal-footer .btn-primary,#charge-modal .modal-footer .btn-secondary{padding:8px 16px;font-size:14px}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideIn{0%{opacity:0;transform:translateY(-30px) scale(.9)}to{opacity:1;transform:translateY(0) scale(1)}}#add-student-modal .modal-content{max-width:600px;width:90%;max-height:500px}#add-student-modal .modal-header{justify-content:space-between}#add-student-modal .modal-body{display:block;padding:20px}#add-student-modal .search-box{display:flex;gap:10px;margin-bottom:20px;align-items:center}#add-student-modal .search-box input{flex:1;padding:8px 12px;border:1px solid #e0e0e0;border-radius:4px;font-size:14px}#add-student-modal .student-list{max-height:400px;overflow-y:auto;border:1px solid #e0e0e0;border-radius:4px}#add-student-modal .student-table{width:100%;border-collapse:collapse;font-size:14px}#add-student-modal .student-table th{background-color:#f9f9f9;padding:12px;text-align:left;border-bottom:2px solid #e0e0e0;font-weight:600;color:#333}#add-student-modal .student-table td{padding:10px 12px;border-bottom:1px solid #e0e0e0;vertical-align:middle;text-align:left}#add-student-modal .student-table th{text-align:left}#add-student-modal .student-table tr:hover{background-color:#f5f5f5;cursor:pointer}#add-student-modal .student-row{transition:background-color .3s ease}#add-student-modal .student-checkbox{transform:scale(1.2);cursor:pointer}#schedule-modal .modal-content{max-width:600px;width:90%;max-height:90vh;display:flex;flex-direction:column}#schedule-modal .modal-header{justify-content:space-between;padding:10px 15px;background:linear-gradient(135deg,#667eea,#764ba2);flex-shrink:0}#schedule-modal .modal-header h3{font-size:16px;font-weight:600;color:#fff}#schedule-modal .modal-body{display:block;padding:25px;overflow-y:auto;max-height:calc(90vh - 120px);flex:1}#schedule-modal .info-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}#schedule-modal .info-item{display:flex;flex-direction:column;gap:8px}#schedule-modal .info-item label{font-size:14px;font-weight:500;color:#333;margin-bottom:5px}#schedule-modal .form-input{padding:10px 12px;border:1px solid #e2e8f0;border-radius:6px;font-size:14px;transition:all .3s ease;width:100%;box-sizing:border-box;background-color:#f8fafc}#schedule-modal .form-input:focus{outline:none;border-color:#4f46e5;box-shadow:0 0 0 .2rem #4f46e540;background-color:#fff}#schedule-modal .modal-footer{padding:15px 25px;gap:15px;background-color:#f8fafc;border-top:1px solid #e2e8f0}.schedule-form{width:100%}.form-row{display:flex;align-items:center;margin-bottom:12px;gap:12px}.form-label{width:90px;font-size:13px;font-weight:600;color:#334155;flex-shrink:0}.radio-group{display:flex;align-items:center;gap:10px;flex:1;flex-wrap:wrap}.radio-group label{display:flex;align-items:center;gap:6px;font-size:13px;cursor:pointer;padding:6px 10px;border-radius:4px;transition:all .3s ease;background-color:#f8fafc;border:1px solid #e2e8f0}.radio-group label:hover{background-color:#eef2ff;border-color:#c7d2fe}.radio-group input[type=radio]{transform:scale(1.2);cursor:pointer;accent-color:#4f46e5}.time-range{display:flex;align-items:center;gap:10px;flex:1}.time-separator{font-size:14px;color:#64748b;margin:0 5px;font-weight:500}.end-type-group{display:flex;align-items:center;gap:12px;flex:1;flex-wrap:wrap}.end-type-group .end-type-content{display:flex;align-items:center;gap:10px;flex:1;min-width:250px}.end-label{font-size:14px;color:#334155;white-space:nowrap;font-weight:500}.checkbox-group{display:flex;flex-wrap:wrap;gap:8px;flex:1}.checkbox-group label{display:flex;align-items:center;gap:6px;font-size:13px;cursor:pointer;padding:6px 10px;border-radius:4px;transition:all .3s ease;background-color:#f8fafc;border:1px solid #e2e8f0}.checkbox-group label:hover{background-color:#eef2ff;border-color:#c7d2fe}.checkbox-group input[type=checkbox]{transform:scale(1.2);cursor:pointer;accent-color:#4f46e5}.calendar{border:1px solid #e2e8f0;border-radius:6px;padding:6px 8px;background-color:#fff;flex:1;box-shadow:0 1px 3px #0000001a;max-width:240px}.calendar-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:2px}#calendar-title{margin:0;font-size:13px;font-weight:600;color:#1e293b}.calendar-body{width:100%}.calendar-weekdays{display:grid;grid-template-columns:repeat(7,1fr);gap:1px;margin-bottom:2px}.calendar-weekdays div{text-align:center;font-size:10px;font-weight:600;color:#64748b;padding:2px 0}.calendar-days{display:grid;grid-template-columns:repeat(7,1fr);gap:1px}.calendar-day{width:26px;height:26px;display:flex;align-items:center;justify-content:center;font-size:11px;border-radius:3px;cursor:pointer;transition:all .3s ease;border:1px solid #f1f5f9}.calendar-day:hover{background-color:#eef2ff;border-color:#c7d2fe}.calendar-day.today{font-weight:600;border-color:#4f46e5;background-color:#f0f9ff}.calendar-day.selected{background-color:#4f46e5;color:#fff;border-color:#4f46e5}.calendar-day.other-month{color:#94a3b8;background-color:#f8fafc}#conflict-result{border:1px solid #e2e8f0;border-radius:4px;padding:12px;background-color:#f8fafc;margin-top:15px;box-shadow:0 1px 3px #0000001a}.conflict-title{font-size:13px;font-weight:600;margin-bottom:8px;color:#334155}.conflict-message{font-size:13px;line-height:1.4}.conflict-message.error{color:#dc2626;font-weight:500}.conflict-message.success{color:#16a34a;font-weight:500}.schedule-content{margin-top:15px;padding:15px;background-color:#f8fafc;border-radius:6px;border:1px solid #e2e8f0}@media(max-width:500px){.form-row{flex-direction:column;align-items:flex-start;gap:10px}.form-label,.radio-group,.time-range,.end-type-group{width:100%}.end-type-content{margin-left:0;margin-top:5px;width:100%}.radio-group label,.checkbox-group label{flex:1;justify-content:center}}#delete-modal{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#00000080;display:none;justify-content:center;align-items:center;z-index:11000;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);animation:fadeIn .3s ease-in-out}#delete-modal .modal-content{background:#fff;border-radius:8px;width:90%;max-width:300px;box-shadow:0 4px 12px #00000026;animation:slideIn .4s cubic-bezier(.175,.885,.32,1.275);border:1px solid #e0e0e0;overflow:hidden}#delete-modal .modal-header{padding:10px 15px;border-bottom:1px solid #e0e0e0;display:flex;align-items:center;justify-content:flex-start;background:linear-gradient(135deg,#667eea,#764ba2);width:100%;box-sizing:border-box}#delete-modal .modal-header h3{margin:0;font-size:14px;font-weight:500;color:#fff}#delete-modal .modal-body{padding:20px 15px;display:flex;align-items:center;gap:15px}#delete-modal .modal-icon{font-size:32px;flex-shrink:0}#delete-modal .modal-message{font-size:14px;color:#333;text-align:left;line-height:1.4;margin:0}#confirm-modal-message{font-size:14px;color:#333;text-align:left;line-height:1.6;margin:0;flex:1}#delete-modal .modal-footer{padding:10px 15px;border-top:1px solid #e0e0e0;display:flex;justify-content:flex-end;background:#f9f9f9;gap:10px}.attendance-modal .modal-content{max-height:600px;overflow-y:auto;max-width:800px;width:90%}.attendance-modal .modal-header{padding:8px 20px;background:linear-gradient(135deg,#667eea,#764ba2);border-bottom:1px solid #e0e0e0;display:flex;align-items:center;justify-content:flex-start;width:100%;box-sizing:border-box}#attendance-modal .modal-header h3,#attendance-detail-modal .modal-header h3{margin:0;font-size:16px!important;font-weight:500;color:#fff}.attendance-modal .attendance-header{padding:15px;background:#f9f9f9;border-bottom:1px solid #e0e0e0}.attendance-modal .attendance-info{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.attendance-modal .info-item{display:flex;align-items:center;gap:2px}.attendance-modal .info-item label{font-weight:700;margin-right:2px}.attendance-modal .modal-body{padding:20px;display:block}.attendance-modal .modal-body>div{max-height:400px;overflow-y:auto}.attendance-modal table{width:100%;border-collapse:collapse;border:1px solid #e0e0e0}.attendance-modal th{padding:10px;background:#f9f9f9;border:1px solid #e0e0e0;margin:0;white-space:nowrap;text-align:center}.attendance-modal td{padding:10px;border:1px solid #e0e0e0;text-align:center}#attendance-modal table th:nth-child(1),#attendance-modal table td:nth-child(1){width:60px;text-align:center}#attendance-modal table th:nth-child(2),#attendance-modal table td:nth-child(2){width:120px;text-align:center}#attendance-modal table th:nth-child(3),#attendance-modal table td:nth-child(3){width:180px;text-align:center}#attendance-modal table th:nth-child(4),#attendance-modal table td:nth-child(4){width:100px;text-align:center}#attendance-modal table th:nth-child(5),#attendance-modal table td:nth-child(5){width:160px;text-align:center}#attendance-modal table th:nth-child(6),#attendance-modal table td:nth-child(6){width:120px;text-align:center}#attendance-modal table th:nth-child(7),#attendance-modal table td:nth-child(7){width:120px;text-align:center}.attendance-modal .attendance-hours{width:60px}.attendance-modal .remove-course{padding:8px 16px;border-radius:4px}.attendance-modal .modal-footer{padding:15px;border-top:1px solid #e0e0e0;display:flex;justify-content:flex-end;gap:10px}.attendance-modal .modal-footer button{padding:8px 16px}#attendance-modal #teacher-select{width:100px}#attendance-modal #schedule-select{width:180px}#attendance-modal #add-temp-student{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:8px 16px;border-radius:4px;cursor:pointer}#attendance-modal #student-list{margin-top:0}#attendance-modal #student-list>div{max-height:220px;overflow-y:auto}.attendance-status{display:flex;gap:10px;flex-wrap:wrap}.attendance-status label{display:flex;align-items:center;gap:5px;cursor:pointer}.attendance-hours{width:60px}#move-student-modal .modal-content{max-width:720px;width:100%;max-height:400px;overflow-y:auto}#move-student-modal .modal-body{display:block;padding:20px;min-height:200px}#move-student-modal .search-box{margin-bottom:15px;display:flex;gap:10px}#move-student-modal .class-list{max-height:200px;overflow-y:scroll;border:1px solid #dee2e6;border-radius:4px}#move-student-modal .class-table{width:100%;border-collapse:collapse}#move-student-modal .class-table th,#move-student-modal .class-table td{padding:10px;text-align:left;border-bottom:1px solid #dee2e6;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;height:48px;line-height:24px}#move-student-modal .class-table th{background-color:#f8f9fa;font-weight:600;position:sticky;top:0;z-index:10}#move-student-modal .class-table th:first-child,#move-student-modal .class-table td:first-child{width:50px;text-align:center}#move-student-modal .class-table th:nth-child(2),#move-student-modal .class-table td:nth-child(2){width:150px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}#move-student-modal .class-table th:nth-child(3),#move-student-modal .class-table td:nth-child(3){width:150px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}#move-student-modal .class-table th:nth-child(4),#move-student-modal .class-table td:nth-child(4){width:100px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}#move-student-modal .class-table th:nth-child(5),#move-student-modal .class-table td:nth-child(5){width:60px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}#move-student-modal .class-table tr:hover{background-color:#f5f5f5}#move-student-modal .class-table tr.selected{background-color:#e3f2fd}#arrange-trial-modal .modal-content{max-width:800px;width:90%;max-height:80vh;display:flex;flex-direction:column;overflow:hidden}#arrange-trial-modal .modal-header{padding:12px 20px;background:linear-gradient(135deg,#667eea,#764ba2);flex-shrink:0}#arrange-trial-modal .modal-header h3{margin:0;font-size:16px;font-weight:500;color:#fff}#arrange-trial-modal .modal-body{padding:20px;display:block;overflow-y:auto;flex:1}#arrange-trial-modal .form-group{margin-bottom:15px}#arrange-trial-modal .form-group label{display:block;margin-bottom:6px;font-size:14px;font-weight:500;color:#333}#arrange-trial-modal .form-input{width:100%;padding:4px 12px;border:1px solid #d9d9d9;border-radius:4px;font-size:14px;transition:all .3s ease;box-sizing:border-box;background-color:#fff;height:24px;line-height:24px}#arrange-trial-modal .form-input:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 2px #667eea33}#arrange-trial-modal .form-input[type=date],#arrange-trial-modal .form-input[type=time],#arrange-trial-modal .form-input[type=text],#arrange-trial-modal .form-input[type=textarea]{height:38px;line-height:38px}#arrange-trial-modal select.form-input{height:24px;line-height:24px;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml;charset=US-ASCII,%3Csvg xmlns='http://www.w3.org/2000/svg' width='292.4' height='292.4'%3E%3Cpath fill='%23333' d='M287 69.4a17.6 17.6 0 0 0-13-5.4H18.4c-5 0-9.3 1.8-12.9 5.4A17.6 17.6 0 0 0 0 82.2c0 5 1.8 9.3 5.4 12.9l128 127.9c3.6 3.6 7.8 5.4 12.8 5.4s9.2-1.8 12.8-5.4L287 95c3.5-3.5 5.4-7.8 5.4-12.8 0-5-1.9-9.2-5.5-12.8z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 8px center;background-size:12px}#arrange-trial-modal textarea.form-input{height:auto;line-height:1.5;min-height:80px;resize:vertical}#arrange-trial-modal .trial-radio-group{display:flex;flex-direction:row;gap:15px;flex-wrap:wrap}#arrange-trial-modal .trial-insert-row{display:flex;gap:15px;flex-wrap:wrap}#arrange-trial-modal .trial-insert-row .form-group{flex:1;min-width:150px}#arrange-trial-modal .radio-item{display:flex;align-items:center;gap:10px;font-size:14px;cursor:pointer;padding:10px 15px;border-radius:6px;background-color:#f8fafc;border:1px solid #e2e8f0;transition:all .3s ease}#arrange-trial-modal .radio-item:hover{background-color:#eef2ff;border-color:#c7d2fe}#arrange-trial-modal .radio-item input[type=radio]{transform:scale(1.2);cursor:pointer;accent-color:#4f46e5}#arrange-trial-modal .trial-form-row{display:flex;gap:15px}#arrange-trial-modal .trial-form-row .form-group{flex:1;margin-bottom:0}#arrange-trial-modal .modal-footer{padding:15px 20px;border-top:1px solid #e0e0e0;display:flex;justify-content:flex-end;gap:12px;background:#f9f9f9;flex-shrink:0}#arrange-trial-modal .modal-footer .btn-primary{background-color:#6f42c1;color:#fff;border:none;padding:10px 20px;border-radius:6px;cursor:pointer;font-size:14px;font-weight:500;transition:background-color .3s ease}#arrange-trial-modal .modal-footer .btn-primary:hover{background-color:#5a32a3}#arrange-trial-modal .modal-footer .btn-secondary{background-color:#6c757d;color:#fff;border:none;padding:10px 20px;border-radius:6px;cursor:pointer;font-size:14px;font-weight:500;transition:background-color .3s ease}#arrange-trial-modal .modal-footer .btn-secondary:hover{background-color:#5a6268}@media(max-width:500px){#arrange-trial-modal .trial-form-row{flex-direction:column}#arrange-trial-modal .trial-form-row .form-group{width:100%}}.btn{padding:4px 6px;border:none;border-radius:4px;cursor:pointer;font-size:12px;transition:background-color .3s;white-space:nowrap;width:auto;text-align:center}.btn-primary{background-color:#007bff;color:#fff;padding:4px 6px;width:auto;text-align:center}.btn-primary:hover{background-color:#0069d9}.btn-schedule-table{background-color:#17a2b8;color:#fff;padding:4px 6px;width:auto;text-align:center}.btn-schedule-table:hover{background-color:#138496}.btn-homework{background-color:#28a745;color:#fff;padding:4px 6px;width:auto;text-align:center}.btn-homework:hover{background-color:#218838}.btn-create-class{background-color:#6f42c1;color:#fff;padding:4px 6px;width:auto;text-align:center}.btn-create-class:hover{background-color:#5a32a3}.btn-secondary{background-color:#e2e6ea;color:#495057;padding:4px 6px;width:auto}.btn-secondary:hover{background-color:#dee2e6;color:#212529}.btn-edit{background-color:#28a745;color:#fff;padding:4px 6px;font-size:12px;width:auto;text-align:center}.btn-edit:hover{background-color:#218838}.btn-edit-disabled{background-color:#6c757d!important;cursor:not-allowed!important;opacity:.6;pointer-events:none}.btn-edit-disabled:hover{background-color:#6c757d!important}.btn-delete{background-color:#dc3545;color:#fff;padding:4px 6px;font-size:12px;width:auto;text-align:center}.btn-delete:hover{background-color:#c82333}.btn-delete-disabled{background-color:#6c757d;cursor:not-allowed;opacity:.6}.btn-delete-disabled:hover{background-color:#6c757d}.btn-suspend{background-color:#ffc107;color:#212529;padding:4px 6px;font-size:12px;width:auto;text-align:center}.btn-suspend:hover{background-color:#e0a800}.btn-attendance{background-color:#17a2b8;color:#fff;padding:4px 6px;font-size:12px;width:auto;text-align:center}.btn-attendance:hover{background-color:#138496}.btn-attendance-disabled{background-color:#6c757d;cursor:not-allowed;opacity:.6}.btn-attendance-disabled:hover{background-color:#6c757d}.btn-follow{background-color:#17a2b8;color:#fff;padding:4px 6px;font-size:12px;white-space:nowrap;width:auto}.btn-follow:hover{background-color:#138496}.btn-enroll{background-color:#ffc107;color:#212529;padding:4px 6px;font-size:12px;white-space:nowrap}.btn-enroll:hover{background-color:#e0a800}.btn-enroll-disabled{background-color:#6c757d!important;color:#fff!important;cursor:not-allowed!important;opacity:.6;pointer-events:none}.btn-enroll-disabled:hover{background-color:#6c757d!important}.btn-suspend-disabled{background-color:#6c757d!important;color:#fff!important;cursor:not-allowed!important;opacity:.6;pointer-events:none}.btn-suspend-disabled:hover{background-color:#6c757d!important}.btn-move-disabled{background-color:#6c757d!important;cursor:not-allowed!important;opacity:.6;pointer-events:none}.btn-move-disabled:hover{background-color:#6c757d!important}.btn-cancel-disabled{background-color:#6c757d!important;cursor:not-allowed!important;opacity:.6;pointer-events:none}.btn-cancel-disabled:hover{background-color:#6c757d!important}.btn-complete-disabled{background-color:#6c757d!important;cursor:not-allowed!important;opacity:.6;pointer-events:none}.btn-complete-disabled:hover{background-color:#6c757d!important}.btn-remove{background-color:#dc3545;color:#fff;padding:4px 6px;font-size:12px;margin-right:5px;white-space:nowrap;width:auto}.btn-remove:hover{background-color:#c82333}.btn-move{background-color:#17a2b8;color:#fff;padding:4px 6px;font-size:12px;white-space:nowrap;width:auto}.btn-move:hover{background-color:#138496}.btn-cancel-order{background-color:#ff4d4f;color:#fff;border:1px solid #ff4d4f;padding:4px 6px;border-radius:4px;cursor:pointer;font-size:12px;margin-right:5px;width:50px;text-align:center}.btn-cancel-order:hover{background-color:#ff7875;border-color:#ff7875}.btn-charge{background-color:#007bff;color:#fff;padding:4px 6px;border-radius:4px;cursor:pointer;font-size:12px;width:50px;text-align:center}.btn-charge:hover{background-color:#0069d9}.btn-charge-disabled{background-color:#6c757d!important;cursor:not-allowed!important;opacity:.6;pointer-events:none}.btn-charge-disabled:hover{background-color:#6c757d!important}.btn-search{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:4px 6px;border-radius:4px;cursor:pointer;font-size:14px;font-weight:500;transition:all .3s ease;width:auto;text-align:center}.btn-search:hover{opacity:.9}.btn-teacher{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:10px;border-radius:4px;font-size:13px;font-weight:500;cursor:pointer;transition:all .3s;flex:1;text-align:center}.btn-teacher:hover{background:linear-gradient(135deg,#5a6fd8,#6a4092);transform:translateY(-2px)}.btn-student{background:linear-gradient(135deg,#f093fb,#f5576c);color:#fff;border:none;padding:10px;border-radius:4px;font-size:13px;font-weight:500;cursor:pointer;transition:all .3s;flex:1;text-align:center}.btn-student:hover{background:linear-gradient(135deg,#e676f1,#e54259);transform:translateY(-2px)}.btn-schedule{background-color:#6f42c1;color:#fff;padding:4px 6px;font-size:12px;width:auto;text-align:center}.btn-schedule:hover{background-color:#5a32a3}.action-buttons{display:flex;gap:8px}.btn-search-student{padding:8px 15px;background:#667eea;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:12px;transition:background-color .3s}.btn-search-student:hover{background:#5a6fd8}.btn-disabled{background-color:#6c757d!important;cursor:not-allowed!important;opacity:.6;pointer-events:none}.btn-disabled:hover{background-color:#6c757d!important}.attendance-modal{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000}.attendance-modal.temp-student-modal{z-index:1100!important}.attendance-modal .modal-content{background-color:#fff;border-radius:8px;box-shadow:0 4px 12px #00000026;width:1000px;max-width:90vw;max-height:80vh;overflow-y:auto}.attendance-modal .modal-header{background-color:#6f42c1;color:#fff;padding:15px;border-radius:8px 8px 0 0}.attendance-modal .modal-header h3{margin:0}.attendance-modal .modal-body{padding:20px}.attendance-modal .modal-footer{display:flex;justify-content:flex-end;gap:10px;padding:15px;border-top:1px solid #ddd}.attendance-info{margin-bottom:3px;padding:2px;background-color:#f8f9fa;border-radius:8px;font-size:14px;display:flex;gap:10px;flex-wrap:nowrap;align-items:center;justify-content:flex-start;width:100%;min-width:0}.attendance-info .info-item{display:flex;align-items:center;gap:8px;flex-shrink:1;min-width:0}.attendance-info .info-item label{flex-shrink:0}.attendance-info .info-item span{flex-shrink:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:150px}.attendance-info select{height:30px;padding:0 4px;border:1px solid #ddd;border-radius:4px;flex-shrink:1;min-width:100px}.attendance-info .teacher-select{width:100px;min-width:80px}.attendance-info .schedule-select{width:180px;min-width:140px}.attendance-info .add-temp-btn{margin-left:auto;flex-shrink:0}.attendance-table{overflow-x:auto;width:100%;max-height:400px;overflow-y:auto;border:1px solid #ddd;border-radius:4px}.attendance-table::-webkit-scrollbar{width:8px}.attendance-table::-webkit-scrollbar-track{background:#f1f1f1;border-radius:4px}.attendance-table::-webkit-scrollbar-thumb{background:#888;border-radius:4px}.attendance-table::-webkit-scrollbar-thumb:hover{background:#555}.attendance-table table{width:100%}.attendance-table th{text-align:left;padding:8px;border-bottom:2px solid #ddd}.attendance-table td{padding:4px 8px;border-bottom:1px solid #ddd}.attendance-table tbody tr{height:36px;vertical-align:middle}.attendance-table th:nth-child(1){width:60px}.attendance-table th:nth-child(2){width:120px}.attendance-table th:nth-child(3){width:100px}.attendance-table th:nth-child(4){width:100px}.attendance-table th:nth-child(5){flex:1;min-width:200px}.attendance-table th:nth-child(6){width:100px}.attendance-table th:nth-child(7){width:100px}.status-options{display:flex;gap:12px;align-items:center;flex-wrap:nowrap}.status-options label{white-space:nowrap;margin:0;display:flex;align-items:center;gap:4px}.attendance-hours{width:60px;height:24px;padding:2px 4px;border:1px solid #ddd;border-radius:4px}.remove-single{padding:2px 8px;font-size:12px;background-color:#dc3545!important;border-color:#dc3545!important;color:#fff!important}.submit-btn{background-color:#6f42c1!important;border-color:#6f42c1!important}.temp-student-modal .modal-content{width:800px;max-width:90vw;max-height:70vh;overflow-y:hidden}.temp-student-modal #eligible-students-content{max-height:280px;overflow-y:auto;border:1px solid #ddd;border-radius:4px}.temp-student-modal #eligible-students-content table{width:100%;border-collapse:collapse}.temp-student-modal #eligible-students-content th,.temp-student-modal #eligible-students-content td{padding:8px;text-align:center;vertical-align:middle;border-bottom:1px solid #ddd}.temp-student-modal #eligible-students-content th{background-color:#f8f9fa;font-weight:700;position:sticky;top:0;z-index:1}.temp-student-modal #eligible-students-content th:nth-child(1){width:60px}.temp-student-modal #eligible-students-content th:nth-child(2){width:100px}.temp-student-modal #eligible-students-content th:nth-child(3){width:130px}.temp-student-modal #eligible-students-content th:nth-child(4){width:150px}.temp-student-modal #eligible-students-content th:nth-child(5){width:80px}.temp-student-modal .form-actions{display:flex;justify-content:center;gap:10px;margin-top:15px}.attendance-modal .form-group{display:flex;flex-direction:column;gap:5px}.attendance-modal .form-group label{font-weight:500}.attendance-modal .form-group input,.attendance-modal .form-group select{height:30px;padding:0 8px;border:1px solid #ddd;border-radius:4px}.attendance-modal .form-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:10px}
