@import"https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap";@import"https://api.fontshare.com/v2/css?f[]=clash-display@600,700&display=swap";.app-layout{display:flex;height:100vh;background:linear-gradient(135deg,var(--neutral-light) 0%,var(--neutral-medium) 100%)}.sidebar{width:var(--sidebar-width);background:var(--neutral-dark);color:#fff;display:flex;flex-direction:column;box-shadow:2px 0 12px #0000001a;z-index:1000;overflow-y:auto}.sidebar-header{padding:var(--spacing-xl);border-bottom:1px solid rgba(255,255,255,.1);position:relative}.logo{font-family:var(--font-display);font-size:20px;font-weight:700;letter-spacing:-.5px;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.close-btn{display:none;position:absolute;top:var(--spacing-lg);right:var(--spacing-lg);background:transparent;border:none;color:#fff;font-size:24px;cursor:pointer;padding:0}.sidebar-nav{flex:1;padding:var(--spacing-xl) 0}.nav-link{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-lg) var(--spacing-xl);color:#ffffffb3;text-decoration:none;transition:var(--transition-smooth);border-left:3px solid transparent;position:relative}.nav-link:hover{color:#fff;background:#ffffff0d}.nav-link.active{color:#fff;border-left-color:var(--primary-warm);background:#d977571a}.nav-icon{font-size:20px;display:flex;align-items:center;justify-content:center}.nav-label{font-size:14px;font-weight:600;letter-spacing:.3px}.sidebar-footer{border-top:1px solid rgba(255,255,255,.1);padding:var(--spacing-xl);display:flex;flex-direction:column;gap:var(--spacing-md)}.user-profile{display:flex;gap:var(--spacing-md);align-items:center}.user-avatar{width:40px;height:40px;border-radius:50%;background:var(--gradient-primary);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;flex-shrink:0}.user-info{flex:1;min-width:0}.user-name{font-weight:600;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-role{font-size:12px;color:#fff9}.logout-btn{padding:var(--spacing-md) var(--spacing-lg);background:#d9775733;border:1px solid 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768px){.sidebar{position:fixed;top:0;left:0;height:100vh;transform:translate(-100%);transition:transform .3s ease;z-index:1001}.sidebar.open{transform:translate(0)}.sidebar-overlay{display:block}.sidebar.open+.sidebar-overlay{display:block}.close-btn,.hamburger{display:block}.content-area{padding:var(--spacing-xl) var(--spacing-lg)}}.input-group{margin-bottom:var(--spacing-lg)}.input-label{display:block;font-size:13px;font-weight:600;color:var(--text-dark);margin-bottom:var(--spacing-sm);letter-spacing:.3px}.input{width:100%;padding:12px 14px;border:1.5px solid var(--border);border-radius:8px;font-size:14px;font-family:inherit;background:var(--neutral-light);color:var(--text-dark);transition:var(--transition)}.input:focus{outline:none;border-color:var(--primary-warm);background:#fff;box-shadow:0 0 0 3px #d4926f1a}.input::placeholder{color:var(--text-light)}.input-error{border-color:var(--danger)}.input-error-message{display:block;color:var(--danger);font-size:12px;margin-top:var(--spacing-sm)}.btn{padding:12px 20px;border:none;border-radius:8px;font-size:14px;font-weight:600;font-family:var(--font-body);cursor:pointer;transition:var(--transition);display:inline-flex;align-items:center;gap:8px}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--gradient-primary);color:#fff}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 12px 24px #2563eb4d}.btn-secondary{background:var(--neutral-medium);color:var(--text-dark);border:1.5px solid var(--border)}.btn-secondary:hover:not(:disabled){background:var(--border);border-color:var(--primary-blue);color:var(--primary-blue)}.btn-success{background:var(--success);color:#fff}.btn-success:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 12px 24px #10b9814d}.btn-icon{width:40px;height:40px;padding:0;border-radius:8px;border:1.5px solid var(--border);background:#fff;font-size:18px}.btn-icon:hover:not(:disabled){background:var(--neutral-light);border-color:var(--primary-blue)}.login-container{min-height:100vh;display:flex;background:#fff;position:relative;overflow:hidden}.login-container:before{content:"";position:absolute;top:0;left:0;width:50%;height:100%;background:var(--gradient-primary);z-index:0}.login-container:after{content:"";position:absolute;top:0;left:0;width:50%;height:100%;background:radial-gradient(circle at 20% 50%,rgba(255,255,255,.1) 0%,transparent 50%),radial-gradient(circle at 80% 80%,rgba(255,255,255,.05) 0%,transparent 50%);z-index:1}.login-decoration{position:absolute;left:5%;opacity:.15;font-size:240px;color:#fff;z-index:2;pointer-events:none}.login-decoration.top-left{top:-60px}.login-decoration.bottom-right{display:none}.login-box{background:#fff;border-radius:var(--radius-xl);padding:var(--spacing-3xl);max-width:420px;width:90%;margin-left:50%;position:relative;z-index:3;box-shadow:var(--shadow-lg);border:1px solid var(--border);display:flex;flex-direction:column;justify-content:center;min-height:100vh}.login-header{text-align:center;margin-bottom:var(--spacing-2xl);animation:slideInRight .6s ease-out}.login-icon{font-size:64px;display:block;margin-bottom:var(--spacing-lg);animation:float 3s ease-in-out infinite}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}.login-header h1{font-size:28px;margin-bottom:var(--spacing-sm);letter-spacing:-.5px}.login-header p{color:var(--text-light);font-size:16px;font-weight:400}.login-footer{text-align:center;margin-top:var(--spacing-xl);font-size:12px;color:var(--text-light)}.input-group{animation:slideInRight .6s ease-out}.input-group:nth-child(2){animation-delay:.1s}.input-group:nth-child(3){animation-delay:.2s}.btn-primary{animation:slideInRight .6s ease-out;animation-delay:.3s}@media (max-width: 768px){.login-container{flex-direction:column;min-height:auto}.login-container:before{width:100%;height:120px}.login-container:after{width:100%;height:120px}.login-decoration{display:none}.login-box{margin-left:0;min-height:auto;padding:var(--spacing-2xl);width:100%;border-radius:var(--radius-lg) var(--radius-lg) 0 0}.login-header{margin-bottom:var(--spacing-xl)}}.card{background:#fff;border:1px solid transparent;border-radius:12px;padding:20px;transition:var(--transition)}.card:hover{transform:translateY(-4px);border-color:var(--border);box-shadow:0 12px 32px #0000001a}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000}.modal-content{background:#fff;border-radius:var(--radius-lg);padding:2rem;max-width:500px;width:90%;max-height:90vh;overflow-y:auto;box-shadow:0 20px 60px #0000004d}.modal-content h2{margin:0 0 1.5rem;font-size:20px;color:var(--text-dark)}.form-group input[type=text],.form-group textarea{width:100%;padding:.75rem;border:1px solid var(--border);border-radius:var(--radius-md);font-size:14px;font-family:inherit;color:var(--text-dark);background:#fff;box-sizing:border-box}.form-group input[type=text]:focus,.form-group textarea:focus{outline:none;border-color:var(--primary-blue);box-shadow:0 0 0 2px #2563eb1a}.form-group textarea{resize:vertical;min-height:100px}.thumbnail-preview{margin-bottom:1rem;border-radius:var(--radius-md);overflow:hidden;background:var(--bg-light);display:flex;align-items:center;justify-content:center;height:200px}.thumbnail-preview img{max-width:100%;max-height:100%;object-fit:cover}.thumbnail-upload-buttons{display:flex;gap:.75rem;margin-bottom:1rem}.btn-upload,.btn-camera{flex:1;padding:.75rem;border:2px solid var(--border);background:#fff;border-radius:var(--radius-md);cursor:pointer;font-size:14px;font-weight:500;color:var(--text-dark);transition:all .2s}.btn-upload:hover:not(:disabled),.btn-camera:hover:not(:disabled){border-color:var(--primary-blue);color:var(--primary-blue);background:#2563eb0d}.btn-upload:disabled,.btn-camera:disabled{opacity:.5;cursor:not-allowed}.error-message{padding:.75rem;background:#dc26261a;color:var(--danger);border-radius:var(--radius-md);font-size:14px;margin-bottom:1rem}.modal-buttons{display:flex;gap:1rem;justify-content:flex-end}.btn-cancel,.btn-save{padding:.75rem 1.5rem;border:none;border-radius:var(--radius-md);font-size:14px;font-weight:500;cursor:pointer;transition:all .2s}.btn-cancel{background:var(--bg-light);color:var(--text-dark);border:1px solid var(--border)}.btn-cancel:hover:not(:disabled){background:var(--border);border-color:var(--text-dark)}.btn-save{background:var(--primary-blue);color:#fff}.btn-save:hover:not(:disabled){background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 4px 12px #2563eb4d}.btn-cancel:disabled,.btn-save:disabled{opacity:.5;cursor:not-allowed}@media (max-width: 768px){.modal-content{width:95%;padding:1.5rem;max-height:calc(100vh - 2rem)}.thumbnail-upload-buttons{flex-direction:column}.btn-upload,.btn-camera{width:100%}}.project-card{cursor:pointer}.project-card .card{padding:0;overflow:hidden}.project-header{height:250px;display:flex;align-items:center;justify-content:center;background:var(--gradient-art)}.project-header.science{background:var(--gradient-science)}.project-header.literature{background:var(--gradient-literature)}.project-body{padding:20px}.project-body h3{margin-bottom:8px;font-size:16px}.project-meta{color:var(--text-light);font-size:12px;margin-bottom:12px}.project-btn{flex:1;padding:10px;background:var(--neutral-light);border:1.5px solid var(--border);border-radius:6px;color:var(--text-dark);font-size:13px;font-weight:600;cursor:pointer;transition:var(--transition)}.project-btn:hover{background:var(--border);border-color:var(--primary-warm);color:var(--primary-warm)}.project-btn-edit{flex:1;padding:10px;background:#2563eb1a;border:1.5px solid rgba(37,99,235,.3);border-radius:6px;color:var(--primary-blue);font-size:13px;font-weight:600;cursor:pointer;transition:var(--transition)}.project-btn-edit:hover{background:#2563eb33;border-color:var(--primary-blue);color:var(--primary-blue)}.project-btn-delete{flex:1;padding:10px;background:#dc35451a;border:1.5px solid rgba(220,53,69,.3);border-radius:6px;color:var(--danger-dark);font-size:13px;font-weight:600;cursor:pointer;transition:var(--transition)}.project-btn-delete:hover{background:#dc354533;border-color:var(--danger);color:var(--danger)}.search-bar{display:flex;gap:12px}.search-input{flex:1;padding:12px 16px;border:1.5px solid var(--border);border-radius:8px;font-size:14px;background:#fff;font-family:inherit;transition:var(--transition)}.search-input:focus{outline:none;border-color:var(--primary-warm);box-shadow:0 0 0 3px #d4926f1a}.search-input::placeholder{color:var(--text-light);opacity:.6}.dashboard-wrapper{min-height:100vh;background:linear-gradient(135deg,var(--neutral-light) 0%,var(--neutral-medium) 100%)}.dashboard-header{background:#fff;padding:24px 32px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center}.header-left h1{margin-bottom:4px}.header-left p{color:var(--text-light);font-size:13px}.header-actions{display:flex;gap:12px}.dashboard-content{padding:32px}.search-bar-wrapper{display:flex;gap:12px;margin-bottom:32px}.project-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px}.new-project-card{background:#fff;border:2px dashed var(--border);border-radius:12px;display:flex;align-items:center;justify-content:center;min-height:280px;cursor:pointer;transition:var(--transition);text-align:center;font-size:18px;color:var(--text-light);font-weight:600}.new-project-card:hover{border-color:var(--primary-warm);background:var(--neutral-light)}.pdf-viewer{display:flex;flex-direction:column;width:100%;height:100%;background:var(--bg-light)}.pdf-controls{display:flex;gap:1rem;align-items:center;justify-content:center;padding:1rem;background:#fff;border-bottom:1px solid var(--border)}.pdf-controls button{padding:.5rem 1rem;background:var(--primary-warm);color:#fff;border:none;border-radius:var(--radius-md);cursor:pointer;font-size:14px;transition:background .2s}.pdf-controls button:hover:not(:disabled){background:var(--primary-dark)}.pdf-controls button:disabled{background:var(--text-light);cursor:not-allowed}.page-info{font-weight:500;min-width:120px;text-align:center;color:var(--text-dark)}.pdf-container{flex:1;overflow:auto;display:flex;justify-content:center;align-items:flex-start;padding:1rem}.pdf-page{background:#fff;box-shadow:var(--shadow-md)}.pdf-page img{max-width:100%;height:auto;display:block}.pdf-viewer-loading,.pdf-viewer-error{display:flex;justify-content:center;align-items:center;min-height:400px;font-size:16px;color:var(--text-light)}.pdf-viewer-error{color:var(--danger)}.video-player{display:flex;flex-direction:column;width:100%;height:100%;background:#000}.video-container{flex:1;display:flex;justify-content:center;align-items:center;background:#000}.video-element{max-width:100%;max-height:100%;display:block}.video-controls{display:flex;gap:1rem;align-items:center;justify-content:center;padding:1rem;background:#222;border-top:1px solid #444}.video-controls button{padding:.5rem 1rem;background:var(--primary-warm);color:#fff;border:none;border-radius:var(--radius-md);cursor:pointer;font-size:14px;transition:background .2s}.video-controls button:hover{background:var(--primary-dark)}.docx-viewer{display:flex;flex-direction:column;height:100%;background:#fff;border-radius:var(--radius-lg);overflow:hidden}.docx-content{flex:1;overflow-y:auto;padding:.5rem;background:var(--bg-light);color:var(--text-dark);width:100%;max-width:100%}.docx-viewer-loading{display:flex;align-items:center;justify-content:center;height:400px;color:var(--text-light);font-size:1rem}.docx-viewer-error{display:flex;flex-direction:column;align-items:center;justify-content:center;height:400px;color:var(--danger);font-size:1rem;padding:2rem;text-align:center;background:#dc35450d;gap:1.5rem}.docx-viewer-error p{margin:0}.docx-viewer-error .download-link{padding:.75rem 1.5rem;background:var(--primary-warm);color:#fff;text-decoration:none;border-radius:var(--radius-md);font-size:.9rem;transition:background .2s}.docx-viewer-error .download-link:hover{background:var(--primary-dark)}.project-page{display:flex;flex-direction:column;min-height:100vh;background:var(--bg-light)}.project-header{display:flex;justify-content:space-between;align-items:center;padding:2rem;background:#fff;border-bottom:1px solid var(--border)}.header-left{display:flex;gap:1.5rem;align-items:center;flex:1}.header-actions{display:flex;gap:.75rem;align-items:center}.back-button:hover{background:var(--border);border-color:var(--primary-blue)}.project-header h1{margin:0;font-size:28px;color:var(--text-dark)}.project-header p{margin:.25rem 0 0;color:var(--text-light);font-size:14px}.project-content{display:grid;grid-template-columns:2fr 1fr;gap:2rem;padding:2rem;flex:1}.files-section,.sharing-section{background:#fff;border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow-md)}.files-section h2,.sharing-section h2{margin:0 0 1.5rem;font-size:18px;color:var(--text-dark)}.file-upload-area{margin-bottom:1.5rem}.upload-label{display:block;padding:1rem;text-align:center;background:var(--bg-light);border:2px dashed var(--primary-blue);border-radius:var(--radius-md);cursor:pointer;transition:background .2s;font-weight:500;color:var(--primary-blue)}.upload-label:hover{background:#2563eb0d}.files-list{display:flex;flex-direction:column;gap:.75rem}.file-item{display:flex;justify-content:space-between;align-items:center;padding:1rem;background:var(--bg-light);border:1px solid var(--border);border-radius:var(--radius-md);transition:background .2s,border-color .2s;overflow:visible}.file-item:hover{background:#2563eb0d;border-color:var(--primary-blue)}.file-info{flex:1;display:flex;gap:1rem;align-items:center}.file-name{font-weight:500;color:var(--text-dark);word-break:break-word}.file-size{font-size:12px;color:var(--text-light)}.file-actions{display:flex;gap:.5rem;align-items:center;position:relative;z-index:1}.view-button-wrapper{position:relative;z-index:100}.view-button,.delete-button,.share-button,.unshare-button{padding:.4rem .8rem;border:none;border-radius:var(--radius-sm);cursor:pointer;font-size:12px;transition:background .2s,transform .2s}.view-button{background:var(--primary-blue);color:#fff}.view-button:hover{background:var(--primary-dark);transform:translateY(-1px)}.delete-button{background:var(--danger);color:#fff}.delete-button:hover{background:var(--danger-dark);transform:translateY(-1px)}.share-controls{display:flex;gap:.5rem;margin-bottom:1.5rem}.email-input{flex:1;padding:.75rem;border:1px solid var(--border);border-radius:var(--radius-md);font-size:14px;background:#fff;color:var(--text-dark)}.email-input:focus{outline:none;border-color:var(--primary-blue);box-shadow:0 0 0 2px #2563eb1a}.share-button{padding:.75rem 1.5rem;background:var(--success);color:#fff}.share-button:hover{background:var(--success-dark);transform:translateY(-1px)}.shared-list{display:flex;flex-direction:column;gap:.75rem}.shared-item{display:flex;justify-content:space-between;align-items:center;padding:.75rem;background:var(--bg-light);border:1px solid var(--border);border-radius:var(--radius-md)}.shared-item span{color:var(--text-dark)}.unshare-button{padding:.4rem .8rem;background:var(--danger);color:#fff}.unshare-button:hover{background:var(--danger-dark);transform:translateY(-1px)}@media (max-width: 768px){.project-content{grid-template-columns:1fr}.project-header{flex-direction:column;align-items:flex-start;gap:1rem}.header-actions{width:100%;flex-direction:column}.header-actions button{width:100%}.file-preview-tooltip{position:fixed;bottom:auto;top:50%;left:50%;transform:translate(-50%,-50%);margin-bottom:0}.file-preview-tooltip:after{display:none}}.download-button{padding:.4rem .8rem;background:var(--primary-blue);color:#fff;border:none;border-radius:var(--radius-sm);cursor:pointer;font-size:12px;font-weight:500;transition:background .2s,transform .2s}.download-button:hover{background:var(--primary-dark);transform:translateY(-1px)}.download-button:active{transform:translateY(0)}.image-gallery{display:flex;flex-direction:column;width:100%;height:100%;background:var(--bg-light)}.image-controls{display:flex;gap:1rem;align-items:center;justify-content:center;padding:1rem;background:#fff;border-bottom:1px solid var(--border)}.image-controls button{padding:.5rem 1rem;background:var(--primary-warm);color:#fff;border:none;border-radius:var(--radius-md);cursor:pointer;font-size:14px;transition:background .2s}.image-controls button:hover{background:var(--primary-dark)}.zoom-level{font-weight:500;min-width:60px;text-align:center;color:var(--text-dark)}.image-container{flex:1;overflow:auto;display:flex;justify-content:center;align-items:center;padding:1rem}.image-container img{max-width:100%;height:auto;background:#fff;box-shadow:var(--shadow-md);transition:transform .2s ease}.image-gallery-error{display:flex;justify-content:center;align-items:center;min-height:400px;font-size:16px;color:var(--danger)}.file-viewer-page{display:flex;flex-direction:column;min-height:100vh;background:var(--bg-light)}.viewer-header{display:flex;align-items:center;gap:1rem;padding:1rem 2rem;background:#fff;border-bottom:1px solid var(--border)}.viewer-header h1{margin:0;font-size:24px;color:var(--text-dark);flex:1;word-break:break-word}.viewer-container{display:grid;grid-template-columns:1fr 350px;gap:1rem;padding:1rem;flex:1;overflow:hidden}.file-content{background:#fff;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md)}.sidebar{display:flex;flex-direction:column;gap:1rem;overflow-y:auto}.comments-section,.activity-section{background:#fff;border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow-md)}.comments-section h2,.activity-section h2{margin:0 0 1rem;font-size:16px;color:var(--text-dark)}.comment-input-area{display:flex;flex-direction:column;gap:.5rem;margin-bottom:1.5rem}.comment-input{padding:.75rem;border:1px solid var(--border);border-radius:var(--radius-md);font-family:inherit;font-size:13px;resize:vertical;min-height:80px;background:#fff;color:var(--text-dark)}.comment-input:focus{outline:none;border-color:var(--primary-warm);box-shadow:0 0 0 2px #d977571a}.comment-button{padding:.5rem 1rem;background:var(--primary-warm);color:#fff;border:none;border-radius:var(--radius-md);cursor:pointer;font-size:13px;transition:background .2s}.comment-button:hover{background:var(--primary-dark)}.comments-list{display:flex;flex-direction:column;gap:.75rem;max-height:300px;overflow-y:auto}.comment-item{padding:.75rem;background:var(--bg-light);border:1px solid var(--border);border-radius:var(--radius-md)}.comment-header{display:flex;justify-content:space-between;margin-bottom:.5rem;font-size:12px}.comment-author{font-weight:600;color:var(--text-dark)}.comment-date{color:var(--text-light)}.comment-text{margin:.5rem 0;font-size:13px;color:var(--text-dark);line-height:1.4}.delete-comment-button{padding:.25rem .5rem;background:var(--danger);color:#fff;border:none;border-radius:var(--radius-sm);cursor:pointer;font-size:11px;transition:background .2s}.delete-comment-button:hover{background:var(--danger-dark)}.activity-list{display:flex;flex-direction:column;gap:.5rem;max-height:300px;overflow-y:auto}.activity-item{display:flex;flex-direction:column;gap:.25rem;padding:.75rem;background:var(--bg-light);border:1px solid var(--border);border-radius:var(--radius-md);font-size:12px}.activity-type{font-weight:600;color:var(--primary-warm)}.activity-user{color:var(--text-dark)}.activity-date{color:var(--text-light);font-size:11px}.empty-message{padding:1rem 0;text-align:center;color:var(--text-light);font-size:12px}@media (max-width: 1024px){.viewer-container{grid-template-columns:1fr}.sidebar{display:grid;grid-template-columns:1fr 1fr;gap:1rem}}@media (max-width: 768px){.sidebar{grid-template-columns:1fr}.comments-list,.activity-list{max-height:200px}}.admin-page{display:flex;flex-direction:column;min-height:100vh;background:var(--bg-light)}.admin-header{display:flex;justify-content:space-between;align-items:center;padding:2rem;background:#fff;border-bottom:1px solid var(--border)}.header-left h1{margin:0;font-size:28px;color:var(--text-dark)}.header-left p{margin:.25rem 0 0;color:var(--text-light);font-size:14px}.header-actions{display:flex;gap:1rem}.admin-content{padding:2rem;flex:1}.add-teacher-form{background:#fff;border-radius:var(--radius-lg);padding:2rem;margin-bottom:2rem;box-shadow:var(--shadow-md)}.add-teacher-form h2{margin:0 0 1.5rem;font-size:20px;color:var(--text-dark)}.form-input:focus{outline:none;border-color:var(--primary-blue);box-shadow:0 0 0 2px #2563eb1a}.form-actions{display:flex;gap:1rem}.temp-password-message{padding:1.5rem;background:var(--bg-light);border-radius:var(--radius-md);border-left:4px solid var(--success)}.temp-password-message p{margin:.5rem 0;color:var(--text-dark);font-size:14px}.temp-password-message p:first-child{margin-top:0}.password-display{margin:1rem 0;padding:1rem;background:#fff;border:1px solid var(--border);border-radius:var(--radius-md);text-align:center}.password-display code{font-family:monospace;font-size:18px;font-weight:600;color:var(--primary-blue);letter-spacing:1px}.submit-button{padding:.75rem 1.5rem;background:var(--success);color:#fff;border:none;border-radius:var(--radius-md);cursor:pointer;font-size:14px;font-weight:500;transition:background .2s}.submit-button:hover{background:var(--success-dark)}.cancel-button{padding:.75rem 1.5rem;background:var(--text-light);color:#fff;border:none;border-radius:var(--radius-md);cursor:pointer;font-size:14px;font-weight:500;transition:background .2s}.cancel-button:hover{background:var(--text-dark)}.teachers-section{background:#fff;border-radius:var(--radius-lg);padding:2rem;box-shadow:var(--shadow-md)}.teachers-section h2{margin:0 0 1.5rem;font-size:20px;color:var(--text-dark)}.teachers-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.5rem}.teacher-card{border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.5rem;background:var(--bg-light);transition:all .2s}.teacher-card:hover{background:#2563eb0d;border-color:var(--primary-blue);box-shadow:var(--shadow-md)}.teacher-info h3{margin:0 0 .5rem;font-size:16px;color:var(--text-dark)}.teacher-email{margin:.25rem 0;font-size:13px;color:var(--text-light)}.teacher-role{margin:.5rem 0;font-size:13px;color:var(--primary-blue);font-weight:500}.teacher-date{margin:.5rem 0 0;font-size:11px;color:var(--text-light)}.delete-teacher-button{width:100%;margin-top:1rem;padding:.5rem 1rem;background:var(--danger);color:#fff;border:none;border-radius:var(--radius-md);cursor:pointer;font-size:13px;transition:background .2s}.delete-teacher-button:hover{background:var(--danger-dark)}.empty-message{text-align:center;padding:2rem 1rem;color:var(--text-light);font-size:14px}.loading,.error{padding:2rem;text-align:center;color:var(--text-light)}.error{color:var(--danger)}@media (max-width: 768px){.admin-header{flex-direction:column;align-items:flex-start;gap:1rem}.header-actions{width:100%;flex-direction:column}.header-actions button{width:100%}.teachers-grid{grid-template-columns:1fr}}.settings-page{display:flex;flex-direction:column;min-height:100vh;background:var(--bg-light)}.settings-header{display:flex;align-items:center;gap:1.5rem;padding:2rem;background:#fff;border-bottom:1px solid var(--border)}.back-button{padding:.5rem 1rem;background:var(--bg-light);border:1px solid var(--border);border-radius:var(--radius-md);cursor:pointer;font-size:14px;transition:background .2s,border-color .2s;color:var(--text-dark)}.back-button:hover{background:var(--border);border-color:var(--primary-warm)}.settings-header h1{margin:0;font-size:28px;color:var(--text-dark)}.settings-content{max-width:600px;margin:2rem auto;padding:0 2rem;flex:1}.settings-section{background:#fff;border-radius:var(--radius-lg);padding:2rem;margin-bottom:2rem;box-shadow:var(--shadow-md)}.settings-section h2{margin:0 0 1.5rem;font-size:18px;color:var(--text-dark);padding-bottom:1rem;border-bottom:1px solid var(--border)}.info-group{margin-bottom:1rem}.info-group label{display:block;margin-bottom:.5rem;font-weight:500;color:var(--text-dark);font-size:14px}.info-input{width:100%;padding:.75rem;border:1px solid var(--border);border-radius:var(--radius-md);font-size:14px;background:var(--bg-light);color:var(--text-light);cursor:not-allowed;box-sizing:border-box}.password-form{margin:0}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:500;color:var(--text-dark);font-size:14px}.form-input{width:100%;padding:.75rem;border:1px solid var(--border);border-radius:var(--radius-md);font-size:14px;font-family:inherit;box-sizing:border-box;background:#fff;color:var(--text-dark)}.form-input:focus{outline:none;border-color:var(--primary-warm);box-shadow:0 0 0 2px #d977571a}.error-message{padding:1rem;background:#dc35451a;border:1px solid rgba(220,53,69,.3);border-radius:var(--radius-md);color:var(--danger-dark);margin-bottom:1rem;font-size:14px}.success-message{padding:1rem;background:#7ba8911a;border:1px solid rgba(123,168,145,.3);border-radius:var(--radius-md);color:var(--success-dark);margin-bottom:1rem;font-size:14px}.form-actions{display:flex;gap:1rem;margin-top:2rem}.save-button{padding:.75rem 1.5rem;background:var(--primary-blue);color:#fff;border:none;border-radius:var(--radius-md);cursor:pointer;font-size:14px;font-weight:500;transition:background .2s;display:inline-block;font-family:inherit;opacity:1;visibility:visible}.save-button:hover:not(:disabled){background:#1e40af}.save-button:disabled{background:var(--text-light);cursor:not-allowed;opacity:.6}.danger-zone{border:2px solid var(--danger);background:#dc35450d}.danger-zone h2{color:var(--danger);border-bottom-color:var(--danger)}.danger-zone p{color:var(--text-light);margin-bottom:1.5rem}@media (max-width: 768px){.settings-content{padding:0 1rem}.settings-section{padding:1.5rem}.form-actions{flex-direction:column}.form-actions button{width:100%}}:root{--primary-blue: #2563EB;--primary-dark: #1E40AF;--secondary-sky: #0EA5E9;--secondary-sky-dark: #0284C7;--accent-cyan: #06B6D4;--accent-indigo: #4F46E5;--success: #10B981;--success-dark: #059669;--danger: #EF4444;--danger-dark: #DC2626;--bg-light: #F8FAFC;--neutral-light: #F8FAFC;--neutral-medium: #F1F5F9;--neutral-dark: #1E293B;--text-dark: #0F172A;--text-light: #64748B;--border: #CBD5E1;--gradient-art: linear-gradient(135deg, #DBEAFE 0%, #BAE6FD 100%);--gradient-science: linear-gradient(135deg, #BFDBFE 0%, #93C5FD 100%);--gradient-literature: linear-gradient(135deg, #CED7E0 0%, #BDD4E0 100%);--gradient-primary: linear-gradient(135deg, #2563EB 0%, #1E40AF 100%);--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 12px;--spacing-lg: 16px;--spacing-xl: 24px;--spacing-2xl: 32px;--spacing-3xl: 48px;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 24px;--shadow-sm: 0 1px 3px rgba(15, 23, 42, .08);--shadow-md: 0 4px 16px rgba(15, 23, 42, .1);--shadow-lg: 0 12px 40px rgba(15, 23, 42, .14);--shadow-blue: 0 8px 32px rgba(37, 99, 235, .15);--shadow-hover: 0 16px 48px rgba(15, 23, 42, .16);--sidebar-width: 240px;--header-height: 64px;--font-display: "Clash Display", serif;--font-body: "Plus Jakarta Sans", system-ui;--transition: all .3s ease;--transition-smooth: all .4s cubic-bezier(.4, 0, .2, 1)}*{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;scroll-behavior:smooth}body{font-family:var(--font-body);background:linear-gradient(135deg,var(--neutral-light) 0%,var(--neutral-medium) 100%);background-attachment:fixed;color:var(--text-dark);line-height:1.6;min-height:100vh}body:before{content:"";position:fixed;top:0;left:0;right:0;bottom:0;background-image:radial-gradient(circle at 20% 50%,rgba(37,99,235,.04) 0%,transparent 50%),radial-gradient(circle at 80% 80%,rgba(14,165,233,.04) 0%,transparent 50%);pointer-events:none;z-index:-1}#root{min-height:100vh;display:flex;flex-direction:column}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:700;letter-spacing:-.5px}h1{font-size:32px;margin-bottom:var(--spacing-lg)}h2{font-size:24px;margin-bottom:var(--spacing-md)}h3{font-size:18px;margin-bottom:var(--spacing-sm)}@keyframes fadeInUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInLeft{0%{opacity:0;transform:translate(-24px)}to{opacity:1;transform:translate(0)}}@keyframes slideInRight{0%{opacity:0;transform:translate(24px)}to{opacity:1;transform:translate(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.container{max-width:1400px;margin:0 auto;padding:0 var(--spacing-lg)}.flex{display:flex}.flex-center{display:flex;align-items:center;justify-content:center}.flex-between{display:flex;align-items:center;justify-content:space-between}.flex-col{flex-direction:column}.gap-xs{gap:var(--spacing-xs)}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.gap-lg{gap:var(--spacing-lg)}.gap-xl{gap:var(--spacing-xl)}.mt-xs{margin-top:var(--spacing-xs)}.mt-sm{margin-top:var(--spacing-sm)}.mt-md{margin-top:var(--spacing-md)}.mt-lg{margin-top:var(--spacing-lg)}.mt-xl{margin-top:var(--spacing-xl)}.mb-xs{margin-bottom:var(--spacing-xs)}.mb-sm{margin-bottom:var(--spacing-sm)}.mb-md{margin-bottom:var(--spacing-md)}.mb-lg{margin-bottom:var(--spacing-lg)}.mb-xl{margin-bottom:var(--spacing-xl)}.p-lg{padding:var(--spacing-lg)}.p-xl{padding:var(--spacing-xl)}.text-center{text-align:center}.text-muted{color:var(--text-light)}.text-sm{font-size:14px}.text-xs{font-size:12px}.rounded-md{border-radius:var(--radius-md)}.rounded-lg{border-radius:var(--radius-lg)}.rounded-xl{border-radius:var(--radius-xl)}.shadow-md{box-shadow:var(--shadow-md)}.shadow-lg{box-shadow:var(--shadow-lg)}.animate-fadeInUp{animation:fadeInUp .6s ease-out forwards}.animate-slideInLeft{animation:slideInLeft .6s ease-out forwards}.animate-slideInRight{animation:slideInRight .6s ease-out forwards}