.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:rgba(0,0,0,.5);display:flex;align-items:center;justify-content:center;z-index:1000}.modal-container{background-color:#fff;border-radius:12px;box-shadow:0 8px 32px rgba(0,0,0,.15);width:400px;max-width:90vw;padding:32px;position:relative;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;animation:fadeIn .2s ease-out}.modal-title{font-size:24px;font-weight:600;margin:0 0 32px}.modal-text,.modal-title{color:#2c3e50;text-align:center}.modal-text{font-size:16px;line-height:1.5;margin-bottom:24px}.modal-subtext{font-size:14px;color:#6b7280;line-height:1.4;text-align:center}.form-section,.modal-subtext{margin-bottom:24px}.form-label{font-weight:500;margin-bottom:8px;display:block}.file-input,.form-label{font-size:14px;color:#2c3e50}.file-input{width:100%;padding:10px 12px;border:1px solid #d4c4b0;border-radius:6px;background-color:#faf8f5;font-family:inherit;cursor:pointer;transition:border-color .2s 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#d4c4b0}.btn-cancel:hover{background-color:#faf8f5;border-color:#5b8c5a}.btn-primary{background-color:#5b8c5a}.btn-primary:hover{background-color:#4a7549}.btn-secondary{background-color:#6c8ebf;color:#fff;border:none}.btn-secondary:hover{background-color:#5a7ba8}.btn-disabled{cursor:not-allowed;border:none}.btn-disabled,.btn-disabled:hover{background-color:#d4c4b0;color:#9ca3af}.loading-section{text-align:center;padding:20px 0}.loading-text{font-size:14px;color:#6c8ebf;font-weight:500}.error-message{color:#dc2626;background-color:#fef2f2;border-radius:4px;border:1px solid #fecaca}.error-message,.success-message{font-size:14px;text-align:center;margin-top:12px;padding:8px}.success-message{color:#059669;background-color:#ecfdf5;border-radius:4px;border:1px solid #bbf7d0}.pulsing-dots{display:inline-flex;gap:8px;align-items:center;margin-bottom:20px}.dot{width:8px;height:8px;background-color:#6c8ebf;border-radius:50%;animation:dotPulse 1.4s ease-in-out infinite both}.dot:first-child{animation-delay:-.32s}.dot:nth-child(2){animation-delay:-.16s}.dot:nth-child(3){animation-delay:0s}@keyframes dotPulse{0%,80%,to{transform:scale(.6);opacity:.4}40%{transform:scale(1);opacity:1}}@keyframes fadeIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}@media (max-width:480px){.modal-container{width:95vw;padding:24px}.modal-title{font-size:20px;margin-bottom:24px}.button-section,.radio-group{flex-direction:column;gap:8px}.btn{width:100%}}.attachmentWrapper{position:relative;display:flex;align-items:flex-start;background-color:#f9fafb;border:1px solid #e5e7eb;border-radius:.375rem;padding:.75rem;gap:.5rem}.attachmentPreview{margin:0;white-space:pre-wrap;word-break:break-word;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3;overflow:hidden;font-size:.875rem;color:#374151}.attachmentCancel{position:absolute;top:.25rem;right:.5rem;font-size:1rem;line-height:1;cursor:pointer;color:#6b7280}.attachmentIcon{flex-shrink:0;width:1rem;height:1rem;color:#6b7280}:root{--calendar-bg-primary:#faf8f5;--calendar-bg-secondary:#fff;--calendar-text-primary:#2c3e50;--calendar-text-secondary:#6c757d;--calendar-text-muted:#9ca3af;--calendar-accent-primary:#5b8c5a;--calendar-accent-secondary:#6c8ebf;--calendar-accent-tertiary:#d4c4b0;--calendar-subject-biology:#27ae60;--calendar-subject-chemistry:#8e44ad;--calendar-subject-physics:#3498db;--calendar-subject-mathematics:#e74c3c;--calendar-subject-history:#d68910;--calendar-subject-english:#16a085;--calendar-subject-psychology:#af7ac5;--calendar-subject-default:#95a5a6;--calendar-success:#27ae60;--calendar-warning:#f39c12;--calendar-error:#e74c3c;--calendar-info:#3498db;--calendar-gray-50:#f8f9fa;--calendar-gray-100:#e9ecef;--calendar-gray-200:#dee2e6;--calendar-gray-300:#ced4da;--calendar-gray-400:#adb5bd;--calendar-gray-500:#6c757d;--calendar-gray-600:#495057;--calendar-gray-700:#343a40;--calendar-gray-800:#212529;--calendar-font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;--calendar-font-family-display:"Crimson Text",Georgia,serif;--calendar-text-xs:0.75rem;--calendar-text-sm:0.875rem;--calendar-text-base:1rem;--calendar-text-lg:1.125rem;--calendar-text-xl:1.25rem;--calendar-text-2xl:1.5rem;--calendar-text-3xl:1.875rem;--calendar-font-normal:400;--calendar-font-medium:500;--calendar-font-semibold:600;--calendar-font-bold:700;--calendar-leading-tight:1.25;--calendar-leading-normal:1.5;--calendar-leading-relaxed:1.625;--calendar-space-1:0.25rem;--calendar-space-2:0.5rem;--calendar-space-3:0.75rem;--calendar-space-4:1rem;--calendar-space-5:1.25rem;--calendar-space-6:1.5rem;--calendar-space-8:2rem;--calendar-space-10:2.5rem;--calendar-space-12:3rem;--calendar-radius-sm:0.25rem;--calendar-radius-md:0.375rem;--calendar-radius-lg:0.5rem;--calendar-radius-xl:0.75rem;--calendar-shadow-sm:0 1px 2px 0 rgba(0,0,0,.05);--calendar-shadow-md:0 4px 6px -1px rgba(0,0,0,.1),0 2px 4px -1px rgba(0,0,0,.06);--calendar-shadow-lg:0 10px 15px -3px rgba(0,0,0,.1),0 4px 6px -2px rgba(0,0,0,.05);--calendar-shadow-xl:0 20px 25px -5px rgba(0,0,0,.1),0 10px 10px -5px rgba(0,0,0,.04);--calendar-transition-fast:150ms ease-in-out;--calendar-transition-normal:250ms ease-in-out;--calendar-transition-slow:350ms ease-in-out}.calendar-container *{font-family:var(--calendar-font-family);box-sizing:border-box}.calendar-container{color:var(--calendar-text-primary);line-height:var(--calendar-leading-normal);font-size:var(--calendar-text-base)}.calendar-labels-row{background:var(--calendar-gray-50);border-bottom:1px solid var(--calendar-gray-200);flex-shrink:0}.calendar-labels-row,.calendar-month-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:1px}.calendar-month-grid{background:var(--calendar-gray-200);border-radius:var(--calendar-radius-lg);overflow:hidden;grid-auto-rows:minmax(120px,auto);align-items:stretch;max-width:100%}.calendar-day-header{background:var(--calendar-gray-50);padding:var(--calendar-space-3) var(--calendar-space-2);text-align:center;font-size:var(--calendar-text-xs);font-weight:var(--calendar-font-semibold);color:var(--calendar-text-secondary)}.calendar-day-cell{background:var(--calendar-bg-secondary);min-height:120px;height:auto;padding:var(--calendar-space-2);padding-bottom:24px;position:relative;display:flex;flex-direction:column;transition:all var(--calendar-transition-fast);cursor:pointer}.calendar-day-cell:hover{background:var(--calendar-gray-50)}.calendar-day-cell.current-day{background:#fff9e6;border:2px solid var(--calendar-accent-primary)}.calendar-day-cell.other-month{background:var(--calendar-gray-50);opacity:.4}.calendar-day-number{font-size:var(--calendar-text-sm);font-weight:var(--calendar-font-medium);color:var(--calendar-text-primary);margin-bottom:var(--calendar-space-2);line-height:1}.calendar-day-cell.current-day .calendar-day-number{color:var(--calendar-accent-primary);font-weight:var(--calendar-font-semibold)}.calendar-day-cell.other-month .calendar-day-number{color:var(--calendar-text-muted)}.calendar-session-container{display:flex;flex-direction:column;gap:var(--calendar-space-1);flex:1;pointer-events:auto;min-height:0}.calendar-expand-btn{position:absolute;bottom:2px;left:2px;right:2px;height:20px;display:flex;align-items:center;justify-content:center;gap:4px;font-size:.7rem;font-weight:600;color:var(--calendar-text-secondary);background:hsla(0,0%,100%,.9);border:1px solid var(--calendar-gray-200);border-radius:4px;cursor:pointer;transition:all .2s;z-index:5}.calendar-expand-btn:hover{background:var(--calendar-gray-50);color:var(--calendar-text-primary)}.files-header-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.files-title{font-size:18px;font-weight:600;color:var(--calendar-text-primary)}.files-search{display:flex;align-items:center;gap:16px}.files-search-input{padding:8px 16px;border:1px solid #d4c4b0;border-radius:20px;font-size:13px;background:#fafafa;color:var(--calendar-text-primary);width:220px;font-family:var(--calendar-font-family)}.files-search-input:focus{outline:none;border-color:var(--calendar-accent-primary);background:#fff}.files-search-input::placeholder{color:#9ca3af}.files-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:14px}.file-tile{background:#fff;border:1px solid #d0d0d0;border-radius:8px;padding:14px;cursor:pointer;transition:all .15s ease;position:relative;box-shadow:0 1px 3px rgba(0,0,0,.05)}.file-tile:hover{transform:translateY(-1px);box-shadow:0 4px 12px rgba(0,0,0,.12);border-color:#b0b0b0}.file-tile.selected{border-color:var(--calendar-accent-primary);background:#f8fbf8;box-shadow:0 2px 8px rgba(91,140,90,.15)}.file-tile.selected:hover{border-color:var(--calendar-accent-primary);background:#f0f8f0}.file-header{height:5px;border-radius:2px;margin-bottom:12px}.file-header.bio{background:#c8e6c9}.file-header.chem{background:#ffe0b2}.file-header.math{background:#bbdefb}.file-header.history{background:#e1bee7}.file-header.physics{background:#c8e6c9}.file-header.psych{background:#ffcdd2}.file-title{font-weight:500;font-size:14px;color:#1a1a1a;margin-bottom:8px;line-height:1.3}.file-meta{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}.file-time{font-size:11px;color:#555}.file-status{font-size:9px;background:#e8f5e8;color:#2e7d32;padding:2px 6px;border-radius:8px;font-weight:500}.file-subject{font-size:10px;color:#757575;text-transform:uppercase;letter-spacing:.5px;font-weight:500}.actions-card{background:#fff;border:1px solid #e8e8e8;border-radius:12px;padding:20px;flex-shrink:0}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:3rem 1rem;text-align:center}.empty-icon{font-size:3rem;margin-bottom:1rem;opacity:.6}.empty-title{font-size:1.25rem;font-weight:600;color:var(--calendar-text-primary);margin-bottom:.5rem}.empty-description{color:var(--calendar-text-secondary);font-size:.875rem;line-height:1.5;max-width:400px}.calendar-tab-navigation{display:flex;background:var(--calendar-gray-50);border-radius:var(--calendar-radius-lg);padding:var(--calendar-space-1);margin-bottom:var(--calendar-space-5);gap:var(--calendar-space-1)}.calendar-tab-button{flex:1;padding:var(--calendar-space-3) var(--calendar-space-4);border:none;background:transparent;color:var(--calendar-text-primary);font-size:var(--calendar-text-sm);font-weight:var(--calendar-font-medium);border-radius:var(--calendar-radius-md);cursor:pointer;transition:all var(--calendar-transition-fast);display:flex;align-items:center;justify-content:center;gap:var(--calendar-space-2)}.calendar-tab-button:hover:not(.active){background:hsla(0,0%,100%,.7)}.calendar-tab-button.active{background:var(--calendar-bg-secondary);box-shadow:var(--calendar-shadow-sm);color:var(--calendar-accent-primary)}.calendar-tab-icon{width:16px;height:16px}.calendar-btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--calendar-space-2);padding:var(--calendar-space-3) var(--calendar-space-4);border:none;border-radius:var(--calendar-radius-md);font-size:var(--calendar-text-sm);font-weight:var(--calendar-font-medium);cursor:pointer;transition:all var(--calendar-transition-fast);text-decoration:none;line-height:1;font-family:var(--calendar-font-family)}.calendar-btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.calendar-btn-primary{background:var(--calendar-accent-primary);color:#fff}.calendar-btn-primary:hover:not(:disabled){background:#4a7549;transform:translateY(-1px);box-shadow:var(--calendar-shadow-md)}.calendar-btn-secondary{background:var(--calendar-accent-secondary);color:#fff}.calendar-btn-secondary:hover:not(:disabled){background:#5a7ba8;transform:translateY(-1px);box-shadow:var(--calendar-shadow-md)}.calendar-btn-outline{background:transparent;color:var(--calendar-text-primary);border:1px solid var(--calendar-accent-tertiary)}.calendar-btn-outline:hover:not(:disabled){background:var(--calendar-gray-50);border-color:var(--calendar-accent-primary);transform:translateY(-1px)}.calendar-btn-sm{padding:var(--calendar-space-2) var(--calendar-space-3);font-size:var(--calendar-text-xs)}.calendar-btn-icon{padding:var(--calendar-space-2);border-radius:50%;background:var(--calendar-gray-50);color:var(--calendar-text-secondary);border:1px solid var(--calendar-gray-300);transition:all var(--calendar-transition-fast)}.calendar-btn-icon:hover:not(:disabled){background:var(--calendar-accent-primary);color:#fff;border-color:var(--calendar-accent-primary)}.calendar-session-label{display:flex;align-items:center;gap:var(--calendar-space-1);padding:var(--calendar-space-1) var(--calendar-space-2);border-radius:var(--calendar-radius-lg);font-size:var(--calendar-text-xs);font-weight:var(--calendar-font-medium);color:#fff;transition:all var(--calendar-transition-fast);cursor:pointer;overflow:hidden;max-width:100%;position:relative;z-index:1;box-sizing:border-box;width:100%;min-height:24px}.calendar-session-label:hover{transform:translateY(-1px);box-shadow:var(--calendar-shadow-md);z-index:2}.calendar-session-icon,.calendar-session-subject{pointer-events:none}.calendar-session-icon{font-size:var(--calendar-text-xs);font-weight:var(--calendar-font-bold);min-width:12px;text-align:center;line-height:1}.calendar-session-subject{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1;min-width:0}.calendar-modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:50;display:flex;align-items:center;justify-content:center;padding:var(--calendar-space-4)}.calendar-modal-content{background:var(--calendar-bg-secondary);border-radius:var(--calendar-radius-xl);box-shadow:var(--calendar-shadow-xl);width:100%;max-width:1200px;max-height:90vh;overflow:hidden;display:flex;flex-direction:column}.calendar-modal-header{display:flex;align-items:center;justify-content:space-between;padding:var(--calendar-space-6);border-bottom:1px solid var(--calendar-gray-200);flex-shrink:0}.calendar-modal-title{display:flex;align-items:center;gap:var(--calendar-space-3);font-size:var(--calendar-text-xl);font-weight:var(--calendar-font-semibold);color:var(--calendar-text-primary)}.calendar-modal-body{flex:1;overflow-y:auto;padding:var(--calendar-space-6)}.calendar-modal-footer{display:flex;align-items:center;justify-content:space-between;padding:var(--calendar-space-6);border-top:1px solid var(--calendar-gray-200);background:var(--calendar-gray-50);flex-shrink:0}.calendar-text-muted{color:var(--calendar-text-muted)}.calendar-text-secondary{color:var(--calendar-text-secondary)}.calendar-text-primary{color:var(--calendar-text-primary)}.calendar-bg-primary{background:var(--calendar-bg-primary)}.calendar-bg-secondary{background:var(--calendar-bg-secondary)}.calendar-loading-spinner{display:inline-block;width:20px;height:20px;border-radius:50%;border:2px solid var(--calendar-gray-200);border-top-color:var(--calendar-accent-primary);animation:calendar-spin 1s ease-in-out infinite}@keyframes calendar-spin{to{transform:rotate(1turn)}}.calendar-input{width:100%;padding:var(--calendar-space-2) var(--calendar-space-3);border:1px solid var(--calendar-gray-300);border-radius:var(--calendar-radius-md);font-size:var(--calendar-text-sm);font-family:var(--calendar-font-family);color:var(--calendar-text-primary);background:var(--calendar-bg-secondary);transition:all var(--calendar-transition-fast)}.calendar-input:focus{outline:none;border-color:var(--calendar-accent-primary);box-shadow:0 0 0 2px rgba(91,140,90,.1)}.calendar-input:disabled{background:var(--calendar-gray-50);color:var(--calendar-text-muted);cursor:not-allowed}.calendar-input::placeholder{color:var(--calendar-text-muted)}@media (max-width:768px){.calendar-modal-content{margin:var(--calendar-space-4);max-height:calc(100vh - 2rem)}.calendar-day-cell{min-height:60px;padding:var(--calendar-space-1);padding-bottom:20px}.calendar-session-label{font-size:10px;padding:1px var(--calendar-space-1)}.calendar-tab-navigation{flex-direction:column;gap:var(--calendar-space-1)}.calendar-modal-body,.calendar-modal-footer,.calendar-modal-header{padding:var(--calendar-space-4)}.files-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px}.files-search-input{width:180px}.files-header-top{flex-direction:column;align-items:flex-start;gap:12px}}@media (max-width:480px){.calendar-day-cell{min-height:50px}.calendar-session-label{font-size:9px}.calendar-day-number{font-size:var(--calendar-text-xs)}.files-grid{grid-template-columns:1fr}.files-search-input{width:100%}}.calendar-session-completed{opacity:.45;text-decoration:line-through;filter:grayscale(.2)}.calendar-session-label.calendar-session-completed:hover{transform:none;box-shadow:none}.calendar-context-menu{background:var(--calendar-bg-secondary);border:1px solid var(--calendar-gray-200);border-radius:var(--calendar-radius-md);box-shadow:var(--calendar-shadow-lg);min-width:220px;padding:4px}.calendar-context-menu-item{width:100%;display:flex;align-items:center;gap:8px;padding:8px 10px;background:transparent;border:none;cursor:pointer;border-radius:var(--calendar-radius-sm);transition:background var(--calendar-transition-fast);color:var(--calendar-text-primary);text-align:left}.calendar-context-menu-item:hover{background:var(--calendar-gray-50)}.calendar-context-menu-checkbox{width:14px;height:14px}.calendar-context-menu-label{font-size:var(--calendar-text-sm)}.calendar-mobile-agenda{background-color:var(--calendar-bg-primary);min-height:100%}.calendar-mobile-header{position:sticky;top:-24px;z-index:30;background-color:#fff;padding:12px 16px;border-bottom:1px solid var(--calendar-gray-200);margin-top:-24px;margin-left:-24px;margin-right:-24px;box-shadow:0 2px 4px rgba(0,0,0,.02)}.calendar-mobile-month-title{font-size:1rem;font-weight:600;color:var(--calendar-text-primary);margin:0}.calendar-mobile-list{padding:16px;display:flex;flex-direction:column;gap:12px}.calendar-mobile-card{display:flex;background:#fff;border:1px solid var(--calendar-gray-200);border-radius:16px;overflow:hidden;min-height:90px;box-shadow:var(--calendar-shadow-sm);margin-top:12px}.calendar-mobile-card.current-day{border-color:var(--calendar-accent-primary);box-shadow:0 0 0 1px var(--calendar-accent-primary)}.calendar-mobile-date-col{width:70px;background-color:#faf8f5;display:flex;flex-direction:column;align-items:center;justify-content:center;border-right:1px solid var(--calendar-gray-100);flex-shrink:0}.calendar-mobile-date-col .weekday{font-size:11px;text-transform:uppercase;color:var(--calendar-text-secondary);font-weight:600;letter-spacing:.5px}.calendar-mobile-date-col 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