.loading-spinner-container{align-items:center;display:flex;justify-content:center;min-height:200px;width:100%}.loading-spinner{display:inline-block;height:80px;position:relative;width:80px}.loading-spinner div{animation:loading-spinner 1.2s cubic-bezier(.5, 0, .5, 1) infinite;border:8px solid #0000;border-radius:50%;border-top-color:#6d7bff;box-sizing:border-box;display:block;height:64px;margin:8px;position:absolute;width:64px}.loading-spinner div:first-child{animation-delay:-.45s}.loading-spinner div:nth-child(2){animation-delay:-.3s}.loading-spinner div:nth-child(3){animation-delay:-.15s}@keyframes loading-spinner{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}
.group-panel-container{background:linear-gradient(135deg, #f8fafc, #e2e8f0);min-height:100vh;position:relative;width:100%}.group-panel{background:#fff;border-radius:16px;box-shadow:0 4px 20px #00000014;margin:0 auto;max-width:1200px;min-height:calc(100vh - 40px);padding:20px}.group-admin-bar{align-items:center;background:linear-gradient(135deg, #6366f1, #8b5cf6);border-radius:12px;box-shadow:0 4px 12px #6366f14d;display:flex;justify-content:space-between;margin-bottom:20px;padding:16px 20px}.admin-controls,.member-controls{align-items:center;display:flex;gap:12px}.control-btn{align-items:center;backdrop-filter:blur(10px);background:#fff3;border:1px solid #ffffff4d;border-radius:8px;color:#fff;cursor:pointer;display:flex;font-weight:600;gap:8px;padding:10px 16px;transition:all .2s ease}.control-btn:hover{background:#ffffff4d;transform:translateY(-1px)}.control-btn.member-btn{position:relative}.control-btn.member-btn .pending-dot{align-items:center;animation:pulse 2s infinite;background:#ef4444;border-radius:50%;color:#fff;display:flex;font-size:11px;font-weight:700;height:20px;justify-content:center;position:absolute;right:-4px;top:-4px;width:20px}.control-dropdown{position:relative}.dropdown-menu{background:#fff;border-radius:8px;box-shadow:0 8px 24px #00000026;margin-top:4px;min-width:160px;padding:8px;position:absolute;right:0;top:100%;z-index:1000}.dropdown-item{align-items:center;background:none;border:none;border-radius:6px;color:#374151;cursor:pointer;display:flex;font-weight:500;gap:8px;padding:10px 12px;transition:all .2s ease;width:100%}.dropdown-item:hover{background:#f3f4f6}.dropdown-item.danger{color:#dc2626}.dropdown-item.danger:hover{background:#fef2f2}.content-navigation{margin-bottom:24px}.nav-toggle{background:#f8fafc;border-radius:12px;display:flex;gap:4px;padding:4px}.nav-btn{align-items:center;background:#0000;border:none;border-radius:8px;color:#64748b;cursor:pointer;display:flex;flex:1;font-weight:600;gap:8px;justify-content:center;padding:12px 20px;transition:all .2s ease}.nav-btn.active{background:#fff;box-shadow:0 2px 8px #0000001a;color:#6366f1}.nav-btn:hover:not(.active){background:#ffffffb3}.simple-post-composer{background:#fff;border:2px solid #e2e8f0;border-radius:16px;box-shadow:0 2px 8px #0000000d;margin-bottom:24px;padding:20px}.composer-input-row{align-items:flex-start;display:flex;gap:12px;margin-bottom:16px}.user-avatar{background:linear-gradient(135deg, #6366f1, #8b5cf6);border-radius:50%;flex-shrink:0;font-size:18px;height:40px;justify-content:center;width:40px}.input-container,.user-avatar{align-items:center;display:flex}.input-container{flex:1;gap:8px;position:relative}.post-input{border:2px solid #e2e8f0;border-radius:12px;flex:1;font-size:16px;outline:none;padding:12px 16px;transition:all .2s ease}.post-input:focus{border-color:#6366f1;box-shadow:0 0 0 3px #6366f11a}.photo-upload-btn{background:#f8fafc;border:2px solid #e2e8f0;border-radius:8px;color:#6366f1;cursor:pointer;padding:10px;transition:all .2s ease}.photo-upload-btn:hover{background:#6366f1;color:#fff}.post-submit-btn{background:linear-gradient(135deg, #6366f1, #8b5cf6);border:none;border-radius:12px;color:#fff;cursor:pointer;font-weight:600;padding:12px 24px;transition:all .2s ease}.post-submit-btn:hover{box-shadow:0 4px 12px #6366f14d;transform:translateY(-1px)}.photo-preview{margin:16px 0;position:relative}.photo-preview img{border-radius:8px;max-height:150px;max-width:200px;object-fit:cover}.photo-preview .remove-photo{align-items:center;background:#ef4444;border:none;border-radius:50%;color:#fff;cursor:pointer;display:flex;font-weight:700;height:24px;justify-content:center;position:absolute;right:-8px;top:-8px;width:24px}.composer-options{border-top:1px solid #e2e8f0;padding-top:16px}.icon-selector{display:flex;flex-wrap:wrap;gap:8px}.icon-option{align-items:center;border-radius:8px;cursor:pointer;display:flex;font-size:18px;height:36px;justify-content:center;transition:all .2s ease;width:36px}.icon-option:hover{background:#f3f4f6}.icon-option.selected{background:#6366f1;transform:scale(1.1)}.simple-post-trigger{align-items:center;background:#fff;border:2px solid #e2e8f0;border-radius:16px;cursor:pointer;display:flex;gap:12px;margin-bottom:24px;padding:16px 20px;transition:all .2s ease}.simple-post-trigger:hover{border-color:#6366f1;box-shadow:0 0 0 3px #6366f11a}.trigger-input-container{align-items:center;display:flex;flex:1;gap:8px}.post-trigger-input{background:#f8fafc;border:none;border-radius:12px;color:#64748b;cursor:pointer;flex:1;padding:12px 16px}.trigger-photo-btn{background:none;border:none;border-radius:6px;color:#6366f1;cursor:pointer;padding:8px;transition:all .2s ease}.trigger-photo-btn:hover{background:#f3f4f6}.wall-timeline{background:#fff;overflow:hidden}.timeline-header{align-items:center;background:linear-gradient(135deg, #f8fafc, #e2e8f0);border-bottom:1px solid #e2e8f0;padding:20px 24px}.timeline-header h3{color:#1e293b;font-size:20px;font-weight:700;margin:0}.timeline-header .post-count{color:#64748b;font-weight:600}.timeline-element{border-bottom:1px solid #f1f5f9;display:flex;gap:16px;padding:24px;position:relative}.timeline-element:last-child{border-bottom:none}.timeline-element.first{background:linear-gradient(135deg, #fef7ff, #f3f4f6)}.timeline-icon{align-items:center;background:linear-gradient(135deg, #6366f1, #8b5cf6);border-radius:50%;box-shadow:0 4px 12px #6366f133;display:flex;flex-shrink:0;font-size:20px;height:48px;justify-content:center;width:48px}.timeline-content{flex:1;position:relative}.timeline-header{align-items:flex-start;background:none;border:none;display:flex;justify-content:space-between;margin-bottom:12px;padding:0}.wall-delete{background:none;border:none;border-radius:6px;color:#ef4444;cursor:pointer;padding:8px;position:absolute;right:0;top:0;transition:all .2s ease}.wall-delete:hover{background:#fef2f2}.user-info{flex:1}.timeline-title{color:#1e293b;font-size:16px;font-weight:700;margin:0 0 4px}.timeline-subtitle{color:#64748b;font-size:14px;font-weight:500;margin:0 0 8px}.timeline-date{color:#94a3b8;font-size:13px}.timeline-body .timeline-text{color:#374151;line-height:1.6;margin-bottom:16px}.timeline-body .post-image img{border-radius:12px;box-shadow:0 4px 12px #0000001a;height:auto;max-width:400px}.post-link{align-items:center;border-radius:4px;color:#6366f1;display:inline-flex;gap:4px;padding:2px 6px;text-decoration:none;transition:all .2s ease}.post-link:hover{background:#f0f9ff;text-decoration:underline}.inline-video{margin:16px 0}.group-panel-container .video-container{aspect-ratio:16/9;border-radius:12px;box-shadow:0 4px 12px #00000026;max-width:560px;overflow:hidden;position:relative;width:100%}.group-panel-container .video-container iframe{border:none;height:100%;width:100%}.video-overlay{background:#000000b3;border-radius:4px;color:#fff;font-size:12px;font-weight:600;padding:4px 8px;position:absolute;right:8px;top:8px}.video-link{margin-top:8px}.video-link a{align-items:center;color:#6366f1;display:inline-flex;font-size:14px;gap:4px;text-decoration:none}.video-link a:hover{text-decoration:underline}.video-error{align-items:center;background:#fef2f2;border:1px solid #fecaca;border-radius:8px;color:#dc2626;display:flex;gap:8px;padding:16px}.video-error a{color:#dc2626;text-decoration:underline}.empty-state{background:#fff;border-radius:16px;padding:60px 20px;text-align:center}.empty-state .empty-icon{font-size:48px;margin-bottom:16px}.empty-state h3{color:#1e293b;font-size:20px;margin:0 0 8px}.empty-state p{color:#64748b;margin:0 0 24px}.empty-state .empty-action-btn{background:linear-gradient(135deg, #6366f1, #8b5cf6);border:none;border-radius:12px;color:#fff;cursor:pointer;font-weight:600;margin-top:10px;padding:12px 24px;transition:all .2s ease}.empty-state .empty-action-btn:hover{box-shadow:0 4px 12px #6366f14d;transform:translateY(-1px)}.quiz-section{background:#fff;border-radius:16px;padding:24px}.search-group{align-items:center;background:#f8fafc;border-radius:12px;display:flex;gap:12px;margin-bottom:24px;padding:16px 20px}.search-group input{border:2px solid #e2e8f0;border-radius:8px;flex:1;outline:none;padding:12px 16px;transition:all .2s ease}.search-group input:focus{border-color:#6366f1}.search-group .find-btn{background:#6366f1;border:none;border-radius:8px;color:#fff;cursor:pointer;padding:12px 16px;transition:all .2s ease}.search-group .find-btn:hover{background:#5b21b6}.quiz-category{margin-bottom:32px}.quiz-category:last-child{margin-bottom:0}.category-header{align-items:center;border-bottom:2px solid #e2e8f0;display:flex;justify-content:space-between;margin-bottom:16px;padding-bottom:12px}.category-header .category-title{color:#1e293b;font-size:18px;font-weight:700;margin:0}.category-header .category-count{color:#64748b;font-weight:600}.quiz-grid{gap:20px;grid-template-columns:repeat(auto-fill, minmax(280px, 1fr))}.quiz-card{border:2px solid #e2e8f0;border-radius:16px;cursor:pointer;transition:all .2s ease}.quiz-card:hover{border-color:#6366f1;box-shadow:0 8px 24px #6366f126;transform:translateY(-2px)}.quiz-image{aspect-ratio:16/9;overflow:hidden;position:relative}.quiz-image img{height:100%;object-fit:cover;transition:all .2s ease;width:100%}.quiz-image .quiz-overlay{align-items:center;background:#0006;display:flex;inset:0;justify-content:center;opacity:0;position:absolute;transition:all .2s ease}.quiz-image .play-btn{background:#ffffffe6;border:none;border-radius:50%;color:#6366f1;cursor:pointer;font-size:20px;height:56px;transition:all .2s ease;width:56px}.quiz-image .play-btn:hover{background:#fff;transform:scale(1.1)}.quiz-image:hover .quiz-overlay{opacity:1}.quiz-info{padding:16px}.quiz-title{color:#1e293b;cursor:pointer;font-size:16px;font-weight:700;margin:0 0 12px;transition:all .2s ease}.quiz-title:hover{color:#6366f1}.quiz-meta{flex-wrap:wrap;gap:8px}.meta-item{align-items:center;background:#f8fafc;border-radius:6px;color:#64748b;display:flex;font-size:12px;gap:4px;padding:4px 8px}.meta-item.schedule{background:#ecfdf5;color:#059669}.meta-item.grade .grade-badge{background:#6366f1;border-radius:4px;color:#fff;font-weight:600;padding:2px 6px}.meta-item.plays{background:#fef2f2;color:#dc2626}.member-sidebar-overlay{align-items:center;background:#00000080;display:flex;inset:0;justify-content:flex-end;padding:20px;position:fixed;z-index:1000}.member-sidebar{background:#fff;border-radius:16px;box-shadow:0 20px 40px #0003;display:flex;flex-direction:column;height:calc(100vh - 40px);max-width:90vw;overflow:hidden;width:400px}.sidebar-header-group{align-items:center;background:linear-gradient(135deg, #6366f1, #8b5cf6);color:#fff;display:flex;justify-content:space-between;padding:20px 24px}.sidebar-header-group h3{font-size:18px;font-weight:700;margin:0}.sidebar-header-group .close-sidebar{background:none;border:none;border-radius:4px;color:#fff;cursor:pointer;font-size:24px;padding:4px;transition:all .2s ease}.sidebar-header-group .close-sidebar:hover{background:#fff3}.sidebar-content{flex:1;overflow-y:auto;padding:20px 24px}.member-search{border:2px solid #e2e8f0;border-radius:12px;margin-bottom:20px;outline:none;padding:12px 16px;transition:all .2s ease;width:100%}.member-search:focus{border-color:#6366f1;box-shadow:0 0 0 3px #6366f11a}.member-list{display:flex;flex-direction:column;gap:12px}.member-item{align-items:center;background:#f8fafc;border:2px solid #0000;border-radius:12px;display:flex;justify-content:space-between;padding:16px;transition:all .2s ease}.member-item.pending{background:#fffbeb;border-color:#fbbf24}.member-item.approved{background:#ecfdf5;border-color:#10b981}.member-info{flex:1}.member-info .member-name{color:#1e293b;display:block;font-weight:600;margin-bottom:4px}.member-info .member-email{color:#64748b;display:block;font-size:14px}.member-info .pending-badge{background:#fbbf24;border-radius:12px;color:#fff;display:inline-block;font-size:12px;font-weight:600;margin-top:4px;padding:2px 8px}.member-actions{display:flex;gap:8px}.approve-btn,.delete-btn{align-items:center;border:none;border-radius:8px;cursor:pointer;display:flex;height:36px;justify-content:center;transition:all .2s ease;width:36px}.approve-btn{background:#10b981;color:#fff}.approve-btn:hover{background:#059669;transform:scale(1.05)}.delete-btn{background:#ef4444;color:#fff}.delete-btn:hover{background:#dc2626;transform:scale(1.05)}.share-modal-overlay{align-items:center;background:#00000080;display:flex;inset:0;justify-content:center;padding:20px;position:fixed;z-index:1000}.share-modal{background:#fff;border-radius:16px;box-shadow:0 20px 40px #0003;max-width:500px;overflow:hidden;width:100%}.modal-header{align-items:center;background:linear-gradient(135deg, #6366f1, #8b5cf6);color:#fff;display:flex;justify-content:space-between;padding:20px 24px}.modal-header h3{font-size:18px;font-weight:700;margin:0}.modal-header .close-modal{background:none;border:none;border-radius:4px;color:#fff;cursor:pointer;font-size:24px;padding:4px;transition:all .2s ease}.modal-header .close-modal:hover{background:#fff3}.modal-content{padding:24px}.modal-content p{color:#64748b;margin:0 0 16px}.link-container{display:flex;gap:8px}.link-container input{background:#f8fafc;border:2px solid #e2e8f0;border-radius:8px;flex:1;outline:none;padding:12px 16px}.link-container .copy-btn{align-items:center;background:#6366f1;border:none;border-radius:8px;color:#fff;cursor:pointer;display:flex;font-weight:600;gap:8px;padding:12px 16px;transition:all .2s ease}.link-container .copy-btn:hover{background:#5b21b6}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@media(max-width:768px){.group-panel{border-radius:12px;margin:10px;min-height:calc(100vh - 20px);padding:16px}.group-admin-bar{align-items:stretch;flex-direction:column;gap:12px}.admin-controls,.member-controls{justify-content:center}.composer-input-row,.nav-toggle{flex-direction:column}.composer-input-row{align-items:stretch}.input-container{order:1}.user-avatar{align-self:flex-start;order:2}.post-submit-btn{align-self:flex-end;order:3}.quiz-grid{grid-template-columns:1fr}.member-sidebar{border-radius:0;height:100vh;width:100%}.timeline-element{flex-direction:column;gap:12px}.timeline-icon{align-self:flex-start}}@media(max-width:480px){.group-panel-container{padding:0}.group-panel{border-radius:0;margin:0;min-height:100vh}.control-btn{font-size:14px;padding:8px 12px}.timeline-element{padding:16px}.quiz-card{margin:0 -4px}}
*{box-sizing:border-box}.classroom-header-modern-container{background:linear-gradient(135deg, #f8fafc, #e2e8f0);border-radius:16px;box-shadow:0 4px 20px #00000014;box-sizing:border-box;max-width:100%;overflow-x:hidden;padding:20px;position:relative;width:100%}.classroom-header-admin-control-bar{align-items:center;background:linear-gradient(135deg, #6366f1, #8b5cf6);border-radius:12px;box-shadow:0 4px 12px #6366f14d;box-sizing:border-box;display:flex;justify-content:space-between;margin-bottom:24px;max-width:100%;padding:16px 20px;width:100%}.classroom-header-title-section{align-items:center;display:flex;gap:16px}.classroom-header-main-title{color:#fff;font-size:24px;font-weight:700;margin:0;text-shadow:0 2px 4px #0000001a}.classroom-header-delete-btn{align-items:center;backdrop-filter:blur(10px);background:#fff3;border:1px solid #ffffff4d;border-radius:8px;color:#fff;cursor:pointer;display:flex;font-size:18px;height:40px;justify-content:center;transition:all .2s ease;width:40px}.classroom-header-delete-btn:hover{background:#ff6b6b33;box-shadow:0 4px 12px #ff6b6b4d;transform:translateY(-1px)}.classroom-header-action-controls{align-items:center;display:flex;gap:12px}.classroom-header-invite-btn{align-items:center;backdrop-filter:blur(10px);background:#fff3;border:1px solid #ffffff4d;border-radius:8px;color:#fff;cursor:pointer;display:flex;font-size:16px;font-weight:600;gap:8px;padding:12px 20px;transition:all .2s ease}.classroom-header-invite-btn:hover{background:#ffffff4d;box-shadow:0 4px 12px #fff3;transform:translateY(-1px)}.classroom-header-invite-btn span{font-size:14px}.classroom-header-google-btn{align-items:center;backdrop-filter:blur(10px);background:#fff3;border:1px solid #ffffff4d;border-radius:8px;color:#fff;cursor:pointer;display:flex;font-size:16px;font-weight:600;gap:8px;padding:12px 20px;transition:all .2s ease}.classroom-header-google-btn:hover{background:#ffffff4d;box-shadow:0 4px 12px #fff3;transform:translateY(-1px)}.classroom-header-google-btn span{font-size:14px}.classroom-header-members-grid{box-sizing:border-box;display:grid;gap:16px;grid-template-columns:repeat(auto-fill, minmax(280px, 1fr));margin-top:8px;width:100%}.classroom-header-member-card{align-items:center;background:#fff;border:2px solid #e2e8f0;border-radius:12px;box-shadow:0 2px 8px #0000000a;box-sizing:border-box;display:flex;gap:16px;max-width:100%;padding:16px 20px;transition:all .2s ease;width:100%}.classroom-header-member-card:hover{border-color:#6366f1;box-shadow:0 0 0 3px #6366f11a;transform:translateY(-1px)}.classroom-header-member-avatar{align-items:center;background:linear-gradient(135deg, #6366f1, #8b5cf6);border-radius:50%;color:#fff;display:flex;flex-shrink:0;font-size:20px;font-weight:700;height:48px;justify-content:center;text-shadow:0 1px 2px #0000001a;width:48px}.classroom-header-member-info{flex:1;min-width:0;overflow:hidden}.classroom-header-member-name{color:#1e293b;font-size:16px;font-weight:600;margin-bottom:4px}.classroom-header-member-email{align-items:center;color:#64748b;display:flex;font-size:14px;gap:8px}.classroom-header-member-email span{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.classroom-header-google-auth-section{padding:20px 0;text-align:center}.classroom-header-google-auth-btn{align-items:center;background:#4285f4;border:none;border-radius:12px;color:#fff;cursor:pointer;display:flex;font-size:16px;font-weight:600;gap:12px;justify-content:center;margin:20px auto 0;padding:16px 32px;transition:all .2s ease}.classroom-header-google-auth-btn:hover:not(:disabled){background:#3367d6;box-shadow:0 4px 12px #4285f44d;transform:translateY(-1px)}.classroom-header-google-auth-btn:disabled{background:#9ca3af;cursor:not-allowed;opacity:.6}.classroom-header-google-auth-btn span{font-size:16px}.classroom-header-modal-overlay{align-items:center;backdrop-filter:blur(4px);background:#00000080;bottom:0;display:flex;justify-content:center;left:0;position:fixed;right:0;top:0;z-index:1000}.classroom-header-modal-container{animation:modalSlideIn .3s ease-out;background:#fff;border-radius:16px;box-shadow:0 20px 40px #00000026;box-sizing:border-box;margin:20px;max-height:90vh;max-width:600px;overflow:hidden;padding:32px;width:calc(100% - 40px)}@keyframes modalSlideIn{0%{opacity:0;transform:translateY(-20px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.classroom-header-modal-header{align-items:flex-start;border-bottom:none;display:flex;justify-content:space-between;margin-bottom:24px;padding:0}.classroom-header-modal-title{color:#1e293b;font-size:28px;font-weight:700;line-height:1.3;margin:0;max-width:80%}.classroom-header-modal-close-btn{align-items:center;background:#f8fafc;border:1px solid #e2e8f0;border-radius:12px;color:#64748b;cursor:pointer;display:flex;flex-shrink:0;font-size:24px;height:44px;justify-content:center;transition:all .2s ease;width:44px}.classroom-header-modal-close-btn:hover{background:#f1f5f9;color:#475569}.classroom-header-modal-content{margin-bottom:32px;padding:0}.classroom-header-error-message{align-items:center;background:#fef2f2;border:1px solid #fecaca;border-radius:8px;color:#dc2626;display:flex;font-size:14px;font-weight:500;gap:8px;margin-bottom:20px;padding:12px 16px}.classroom-header-error-message:before{content:"⚠️";font-size:16px}.classroom-header-modal-description{color:#64748b;font-size:18px;line-height:1.5;margin:0 0 32px}.classroom-header-course-selection{padding:0}.classroom-header-course-list{border:2px solid #e2e8f0;border-radius:12px;margin-top:16px;max-height:300px;overflow-y:auto}.classroom-header-course-item{background:#fff;border-bottom:1px solid #e2e8f0;cursor:pointer;padding:16px 20px;transition:all .2s ease}.classroom-header-course-item:last-child{border-bottom:none}.classroom-header-course-item:hover{background:#f8fafc}.classroom-header-course-item.selected{background:#6366f1;color:#fff}.classroom-header-course-item.selected .classroom-header-course-section{color:#fffc}.classroom-header-course-name{color:#1e293b;font-size:16px;font-weight:600;margin-bottom:4px}.classroom-header-course-item.selected .classroom-header-course-name{color:#fff}.classroom-header-course-section{color:#64748b;font-size:14px}.classroom-header-share-input-container{display:flex;flex-direction:column;gap:20px;margin-bottom:32px}.classroom-header-share-input{background:#f8fafc;border:2px solid #e2e8f0;border-radius:12px;box-sizing:border-box;color:#475569;font-family:monospace;font-size:16px;max-width:100%;outline:none;padding:16px 20px;transition:all .2s ease;width:100%}.classroom-header-share-input:focus{background:#fff;border-color:#6366f1;box-shadow:0 0 0 3px #6366f11a}.classroom-header-copy-btn{align-items:center;background:#6366f1;border:none;border-radius:12px;box-sizing:border-box;color:#fff;cursor:pointer;display:flex;font-size:16px;font-weight:600;gap:8px;justify-content:center;padding:16px 24px;transition:all .2s ease;width:100%}.classroom-header-copy-btn:hover{background:#5855eb;box-shadow:0 4px 12px #6366f14d;transform:translateY(-1px)}.classroom-header-copy-btn span{font-size:16px}.classroom-header-loading{color:#64748b;font-size:16px;padding:40px 20px;text-align:center}.classroom-header-import-btn{align-items:center;background:#10b981;border:none;border-radius:12px;box-sizing:border-box;color:#fff;cursor:pointer;display:flex;font-size:16px;font-weight:600;gap:8px;justify-content:center;min-width:140px;padding:16px 32px;transition:all .2s ease}.classroom-header-import-btn:hover:not(:disabled){background:#059669;box-shadow:0 4px 12px #10b9814d;transform:translateY(-1px)}.classroom-header-import-btn:disabled{cursor:not-allowed;opacity:.6}.classroom-header-import-btn span{font-size:16px}.classroom-header-modal-footer{display:flex;justify-content:center;padding:0}.classroom-header-done-btn{align-items:center;background:#10b981;border:none;border-radius:12px;box-sizing:border-box;color:#fff;cursor:pointer;display:flex;font-size:16px;font-weight:600;gap:8px;justify-content:center;min-width:120px;padding:16px 32px;transition:all .2s ease}.classroom-header-done-btn:hover{background:#059669;box-shadow:0 4px 12px #10b9814d;transform:translateY(-1px)}.classroom-header-done-btn span{font-size:16px}@media(max-width:1024px)and (min-width:769px){.classroom-header-members-grid{gap:12px;grid-template-columns:repeat(auto-fill, minmax(250px, 1fr))}.classroom-header-modal-container{padding:28px;width:calc(100% - 60px)}.classroom-header-admin-control-bar{padding:14px 16px}}@media(max-width:768px){.classroom-header-modern-container{border-radius:12px;padding:16px}.classroom-header-admin-control-bar{align-items:stretch;flex-direction:column;gap:12px;margin-bottom:16px;padding:16px}.classroom-header-title-section{justify-content:space-between;width:100%}.classroom-header-main-title{font-size:20px;line-height:1.2}.classroom-header-action-controls{flex-direction:column;gap:8px;width:100%}.classroom-header-google-btn,.classroom-header-invite-btn{font-size:14px;justify-content:center;padding:12px 16px;width:100%}.classroom-header-members-grid{gap:12px;grid-template-columns:1fr}.classroom-header-member-card{gap:12px;padding:12px 16px}.classroom-header-member-avatar{font-size:16px;height:40px;width:40px}.classroom-header-modal-container{border-radius:12px;margin:10px;padding:20px;width:calc(100% - 20px)}.classroom-header-modal-title{font-size:22px;max-width:75%}.classroom-header-modal-close-btn{font-size:20px;height:36px;width:36px}.classroom-header-modal-description{font-size:16px;margin-bottom:24px}.classroom-header-share-input{font-size:14px;padding:14px 16px}.classroom-header-copy-btn,.classroom-header-done-btn,.classroom-header-import-btn{font-size:14px;padding:14px 20px;width:100%}.classroom-header-course-item{padding:12px 16px}.classroom-header-google-auth-btn{font-size:14px;padding:14px 24px}}@media(max-width:480px){.classroom-header-admin-control-bar,.classroom-header-modern-container{padding:12px}.classroom-header-main-title{font-size:18px}.classroom-header-modal-container{margin:5px;padding:16px;width:calc(100% - 10px)}.classroom-header-modal-title{font-size:20px;max-width:70%}.classroom-header-member-card{gap:10px;padding:10px 12px}.classroom-header-member-avatar{font-size:14px;height:36px;width:36px}.classroom-header-member-name{font-size:14px}.classroom-header-member-email{font-size:12px}}
.discover-marketplace-container{background-color:#fff;min-height:100vh}@media(max-width:768px){.discover-marketplace-container{margin-left:0;padding-top:60px}}.discover-marketplace-header{backdrop-filter:blur(8px);background-color:#fffffff2;border-bottom:1px solid #e5e7eb;padding:1rem;position:sticky;top:0;z-index:10}@media(max-width:768px){.discover-marketplace-header{padding:.75rem}}.discover-marketplace-title{color:#111827;font-size:1.5rem;font-weight:700;margin:0}@media(max-width:768px){.discover-marketplace-title{font-size:1.25rem}}.discover-marketplace-subtitle{color:#6b7280;font-size:.875rem;margin:.25rem 0 0}.discover-marketplace-content{padding:1rem}@media(max-width:768px){.discover-marketplace-content{padding:.75rem}}.discover-marketplace-section{margin-bottom:2rem}.discover-marketplace-section:last-child{margin-bottom:0}.discover-marketplace-section-title{color:#111827;font-size:1.125rem;font-weight:600;margin:0 0 1rem}.discover-marketplace-featured-grid{display:grid;gap:1rem;grid-template-columns:repeat(3, 1fr)}@media(min-width:640px){.discover-marketplace-featured-grid{grid-template-columns:repeat(4, 1fr)}}@media(min-width:768px){.discover-marketplace-featured-grid{grid-template-columns:repeat(6, 1fr)}}.discover-marketplace-featured-card{aspect-ratio:1;background-color:#fff;border:1px solid #e5e7eb;border-radius:.75rem;cursor:pointer;padding:1rem;transition:all .2s ease}.discover-marketplace-featured-card:hover{box-shadow:0 10px 25px -3px #0000001a,0 4px 6px -2px #0000000d;transform:translateY(-2px)}.discover-marketplace-featured-image{height:100%;object-fit:contain;transition:transform .2s ease;width:100%}.discover-marketplace-featured-card:hover .discover-marketplace-featured-image{transform:scale(1.05)}.discover-marketplace-collections-wrapper{position:relative}.discover-marketplace-collections-scroll{-ms-overflow-style:none;display:flex;gap:1rem;overflow-x:auto;padding-bottom:.5rem;scrollbar-width:none}.discover-marketplace-collections-scroll::-webkit-scrollbar{display:none}.discover-marketplace-collection-card{background-color:#fff;border:1px solid #e5e7eb;border-radius:.75rem;cursor:pointer;flex-shrink:0;padding:1rem;transition:all .2s ease;width:10rem}.discover-marketplace-collection-card:hover{box-shadow:0 10px 25px -3px #0000001a,0 4px 6px -2px #0000000d;transform:translateY(-2px)}.discover-marketplace-collection-image-wrapper{aspect-ratio:1;background-color:#f9fafb;border-radius:.5rem;margin-bottom:.75rem;overflow:hidden}.discover-marketplace-collection-image{height:100%;object-fit:contain;transition:transform .2s ease;width:100%}.discover-marketplace-collection-card:hover .discover-marketplace-collection-image{transform:scale(1.05)}.discover-marketplace-collection-title{color:#111827;font-size:.875rem;font-weight:500;margin:0;overflow:hidden;text-align:center;text-overflow:ellipsis;white-space:nowrap}.discover-marketplace-nav-btn{align-items:center;background-color:#fff;border:1px solid #e5e7eb;border-radius:50%;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f;cursor:pointer;display:flex;height:2rem;justify-content:center;position:absolute;top:50%;transform:translateY(-50%);transition:all .2s ease;width:2rem}.discover-marketplace-nav-btn:hover{background-color:#f9fafb}.discover-marketplace-nav-prev{left:.5rem}.discover-marketplace-nav-next{right:.5rem}.discover-marketplace-nav-icon{color:#111827;height:1rem;width:1rem}.discover-marketplace-brands-grid{display:grid;gap:1rem;grid-template-columns:1fr}@media(min-width:640px){.discover-marketplace-brands-grid{grid-template-columns:repeat(2, 1fr)}}@media(min-width:1024px){.discover-marketplace-brands-grid{grid-template-columns:repeat(3, 1fr)}}.discover-marketplace-brand-card{background-color:#fff;border:1px solid #e5e7eb;border-radius:.75rem;cursor:pointer;overflow:hidden;position:relative;transition:all .2s ease}.discover-marketplace-brand-card:hover{box-shadow:0 10px 25px -3px #0000001a,0 4px 6px -2px #0000000d;transform:translateY(-2px)}.discover-marketplace-brand-image-wrapper{aspect-ratio:16/9;background-color:#f9fafb;overflow:hidden}.discover-marketplace-brand-image{height:100%;object-fit:cover;transition:transform .2s ease;width:100%}.discover-marketplace-brand-card:hover .discover-marketplace-brand-image{transform:scale(1.05)}.discover-marketplace-brand-overlay{background:linear-gradient(0deg, #0009, #0000);bottom:0;left:0;padding:1rem;position:absolute;right:0}.discover-marketplace-brand-title{border-radius:.375rem;color:#fff;display:inline-block;font-size:.875rem;font-weight:500;margin:0;padding:.25rem .5rem}.brand-profile-page{background-color:#fff;min-height:100vh}.brand-cover{align-items:flex-end;background-position:50%;background-repeat:no-repeat;background-size:cover;display:flex;height:300px;position:relative}@media(max-width:768px){.brand-cover{height:200px}}.brand-cover-overlay{background:linear-gradient(180deg, #0000004d, #000000b3);bottom:0;display:flex;flex-direction:column;justify-content:space-between;left:0;padding:24px;position:absolute;right:0;top:0}@media(max-width:768px){.brand-cover-overlay{padding:16px}}.back-btn{align-self:flex-start;backdrop-filter:blur(4px);background:#ffffffe6;border:none;border-radius:20px;color:#374151;cursor:pointer;font-size:14px;font-weight:500;padding:8px 16px;transition:all .2s ease}.back-btn:hover{background:#fff;transform:translateY(-1px)}.brand-info{align-items:center;display:flex;gap:16px}@media(max-width:768px){.brand-info{flex-direction:column;gap:12px;text-align:center}}.brand-logo{background-color:#ffffffe6;border:3px solid #ffffffe6;border-radius:12px;height:80px;object-fit:cover;width:80px}@media(max-width:768px){.brand-logo{height:60px;width:60px}}.brand-name{color:#fff;font-size:32px;font-weight:700;margin:0;text-shadow:0 2px 4px #0000004d}@media(max-width:768px){.brand-name{font-size:24px}}.brand-description{color:#ffffffe6;font-size:16px;line-height:1.5;margin:8px 0 0;text-shadow:0 1px 2px #0000004d}@media(max-width:768px){.brand-description{font-size:14px}}.brand-quizzes-section{padding:32px 24px}@media(max-width:768px){.brand-quizzes-section{padding:24px 16px}}.section-title{color:#111827;font-size:24px;font-weight:700;margin:0 0 24px}@media(max-width:768px){.section-title{font-size:20px;margin-bottom:16px}}.quiz-grid{display:grid;gap:24px;grid-template-columns:repeat(auto-fill, minmax(300px, 1fr))}@media(max-width:768px){.quiz-grid{gap:16px;grid-template-columns:1fr}}.quiz-card{background:#fff;border:1px solid #f3f4f6;border-radius:12px;box-shadow:0 1px 3px 0 #0000001a,0 1px 2px 0 #0000000f;overflow:hidden;transition:all .3s ease}.quiz-card:hover{border-color:#e5e7eb;box-shadow:0 20px 25px -5px #0000001a,0 10px 10px -5px #0000000a;transform:translateY(-4px)}.quiz-image-container{background:linear-gradient(135deg, #667eea, #764ba2);height:160px;overflow:hidden;position:relative}.quiz-image{height:100%;object-fit:cover;transition:transform .3s ease;width:100%}.quiz-card:hover .quiz-image{transform:scale(1.05)}.quiz-content{padding:20px}.quiz-title{color:#111827;font-size:18px;font-weight:600;line-height:1.4;margin:0 0 8px}.quiz-description,.quiz-title{-webkit-line-clamp:2;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.quiz-description{color:#6b7280;font-size:14px;line-height:1.5;margin:0 0 16px}.quiz-meta{color:#9ca3af;display:flex;font-size:12px;gap:16px;margin-bottom:16px}.quiz-grade,.quiz-responses{background:#f3f4f6;border-radius:12px;font-weight:500;padding:4px 8px}.quiz-actions{padding:0 20px 20px}.start-quiz-btn{background:linear-gradient(135deg, #667eea, #764ba2);border:none;border-radius:8px;color:#fff;cursor:pointer;font-size:14px;font-weight:600;padding:12px 16px;transition:all .2s ease;width:100%}.start-quiz-btn:hover{box-shadow:0 4px 12px #667eea66;transform:translateY(-1px)}.start-quiz-btn:active{transform:translateY(0)}.no-quizzes{color:#6b7280;padding:80px 20px;text-align:center}.no-quizzes p{color:#6b7280;font-size:16px;margin:0}.marketplace-quiz-detail{margin:0 auto;max-width:1200px;padding:24px}.marketplace-quiz-detail .quiz-detail-header{align-items:center;border-bottom:1px solid #e5e7eb;display:flex;justify-content:space-between;margin-bottom:32px;padding-bottom:16px}.marketplace-quiz-detail .quiz-detail-header .back-btn{background:none;border:none;color:#6366f1;cursor:pointer;font-size:16px;font-weight:500;padding:8px 0;transition:color .2s ease}.marketplace-quiz-detail .quiz-detail-header .back-btn:hover{color:#4f46e5;text-decoration:underline}.marketplace-quiz-detail .quiz-detail-header .quiz-detail-title{color:#111827;font-size:28px;font-weight:700;margin:0}.marketplace-quiz-detail .quiz-grid{display:grid;gap:24px;grid-template-columns:repeat(auto-fill, minmax(320px, 1fr))}@media(max-width:768px){.marketplace-quiz-detail .quiz-grid{gap:16px;grid-template-columns:1fr}}.marketplace-quiz-detail .quiz-card{background:#fff;border:1px solid #f3f4f6;border-radius:12px;box-shadow:0 1px 3px 0 #0000001a,0 1px 2px 0 #0000000f;overflow:hidden;transition:all .3s ease}.marketplace-quiz-detail .quiz-card:hover{border-color:#e5e7eb;box-shadow:0 10px 25px -3px #0000001a,0 4px 6px -2px #0000000d;transform:translateY(-2px)}.marketplace-quiz-detail .quiz-card .quiz-card-header{align-items:center;background:linear-gradient(135deg, #667eea, #764ba2);display:flex;height:180px;justify-content:center;position:relative}.marketplace-quiz-detail .quiz-card .quiz-card-header .quiz-image{height:100%;object-fit:cover;width:100%}.marketplace-quiz-detail .quiz-card .quiz-card-header .quiz-badge{backdrop-filter:blur(4px);background:#ffffffe6;border-radius:20px;color:#6366f1;font-size:12px;font-weight:600;padding:4px 12px;position:absolute;right:12px;top:12px}.marketplace-quiz-detail .quiz-card .quiz-card-content{padding:20px}.marketplace-quiz-detail .quiz-card .quiz-card-content .quiz-title{-webkit-line-clamp:2;-webkit-box-orient:vertical;color:#111827;display:-webkit-box;font-size:18px;font-weight:600;line-height:1.4;margin:0 0 8px;overflow:hidden}.marketplace-quiz-detail .quiz-card .quiz-card-content .quiz-description{-webkit-line-clamp:3;-webkit-box-orient:vertical;color:#6b7280;display:-webkit-box;font-size:14px;line-height:1.5;margin:0 0 16px;overflow:hidden}.marketplace-quiz-detail .quiz-card .quiz-card-content .quiz-meta{color:#9ca3af;display:flex;font-size:12px;gap:16px}.marketplace-quiz-detail .quiz-card .quiz-card-content .quiz-meta .quiz-duration,.marketplace-quiz-detail .quiz-card .quiz-card-content .quiz-meta .quiz-questions{align-items:center;display:flex;gap:4px}.marketplace-quiz-detail .quiz-card .quiz-card-content .quiz-meta .quiz-duration:before,.marketplace-quiz-detail .quiz-card .quiz-card-content .quiz-meta .quiz-questions:before{color:#d1d5db;content:"•"}.marketplace-quiz-detail .quiz-card .quiz-card-content .quiz-meta .quiz-duration:first-child:before,.marketplace-quiz-detail .quiz-card .quiz-card-content .quiz-meta .quiz-questions:first-child:before{display:none}.marketplace-quiz-detail .quiz-card .quiz-card-footer{padding:0 20px 20px}.marketplace-quiz-detail .quiz-card .quiz-card-footer .start-quiz-btn{background:#6366f1;border:none;border-radius:8px;color:#fff;cursor:pointer;font-size:14px;font-weight:600;padding:12px 16px;transition:all .2s ease;width:100%}.marketplace-quiz-detail .quiz-card .quiz-card-footer .start-quiz-btn:hover{background:#4f46e5;transform:translateY(-1px)}.marketplace-quiz-detail .quiz-card .quiz-card-footer .start-quiz-btn:active{transform:translateY(0)}.marketplace-quiz-detail .no-quizzes{color:#6b7280;padding:80px 20px;text-align:center}.marketplace-quiz-detail .no-quizzes .no-quizzes-icon{font-size:64px;margin-bottom:16px;opacity:.5}.marketplace-quiz-detail .no-quizzes h3{color:#374151;font-size:20px;font-weight:600;margin:0 0 8px}.marketplace-quiz-detail .no-quizzes p{color:#6b7280;font-size:16px;margin:0}@media(max-width:768px){.discover-marketplace-featured-grid{gap:.75rem;grid-template-columns:repeat(2, 1fr)}.discover-marketplace-featured-card{padding:.75rem}.discover-marketplace-collection-card{padding:.75rem;width:8rem}.discover-marketplace-brands-grid{gap:.75rem;grid-template-columns:1fr}.marketplace-quiz-detail{padding:16px}.marketplace-quiz-detail .quiz-detail-header{align-items:flex-start;flex-direction:column;gap:12px}.marketplace-quiz-detail .quiz-detail-header .quiz-detail-title{font-size:24px}.marketplace-quiz-detail .quiz-card .quiz-card-header{height:160px}.marketplace-quiz-detail .quiz-card .quiz-card-content{padding:16px}.marketplace-quiz-detail .quiz-card .quiz-card-content .quiz-title{font-size:16px}.marketplace-quiz-detail .quiz-card .quiz-card-footer{padding:0 16px 16px}}