:root{--primary-color:#0d6efd;--secondary-color:#6c757d;--success-color:#198754;--danger-color:#dc3545;--bg-color:#f8f9fa;--text-color:#212529;--border-radius:12px;--shadow:0 4px 6px rgba(0,0,0,.1);--shadow-lg:0 10px 25px rgba(0,0,0,.15)}*{box-sizing:border-box;padding:0;margin:0}body,html{max-width:100vw;overflow-x:hidden;font-family:Segoe UI,system-ui,-apple-system,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh}.app-header{background:hsla(0,0%,100%,.95);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:var(--shadow);padding:1rem 2rem;position:-webkit-sticky;position:sticky;top:0;z-index:1000}.app-header h1{font-size:1.5rem;font-weight:700;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.glass-card{background:hsla(0,0%,100%,.9);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-radius:var(--border-radius);box-shadow:var(--shadow-lg);border:1px solid hsla(0,0%,100%,.2);transition:transform .3s ease,box-shadow .3s ease}.glass-card:hover{transform:translateY(-5px);box-shadow:0 15px 35px rgba(0,0,0,.2)}.upload-zone{border:3px dashed #667eea;border-radius:var(--border-radius);padding:3rem;text-align:center;cursor:pointer;transition:all .3s ease;background:rgba(102,126,234,.05)}.upload-zone.dragover,.upload-zone:hover{background:rgba(102,126,234,.15);border-color:#764ba2}.upload-zone i{font-size:3rem;color:#667eea;margin-bottom:1rem}.presentation-card{cursor:pointer;overflow:hidden}.presentation-card .thumbnail{height:150px;background:linear-gradient(135deg,#667eea,#764ba2);display:flex;align-items:center;justify-content:center;color:#fff;font-size:3rem}.presentation-card .card-body{padding:1rem}.presentation-card .card-title{font-weight:600;font-size:1rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.slide-container{background:#fff;border-radius:var(--border-radius);overflow:hidden;box-shadow:var(--shadow-lg)}.slide-image{width:100%;height:auto;display:block}.slide-navigation{display:flex;justify-content:center;align-items:center;gap:1rem;padding:1rem;background:hsla(0,0%,100%,.9)}.chat-panel{height:calc(100vh - 200px);display:flex;flex-direction:column;background:#fff;border-radius:var(--border-radius);overflow:hidden;transition:height .3s ease}.chat-panel.collapsed{height:auto}.chat-panel.collapsed .chat-input-container,.chat-panel.collapsed .chat-messages{display:none}.chat-toggle-btn{position:fixed;bottom:24px;right:24px;width:60px;height:60px;border-radius:50%;background:linear-gradient(135deg,#667eea,#764ba2);border:none;color:#fff;font-size:1.5rem;cursor:pointer;box-shadow:0 4px 15px rgba(102,126,234,.4);transition:all .3s ease;z-index:1000;display:flex;align-items:center;justify-content:center}.chat-toggle-btn:hover{transform:scale(1.1);box-shadow:0 6px 20px rgba(102,126,234,.6)}.chat-toggle-btn:active{transform:scale(.95)}.chat-messages{flex:1 1;overflow-y:auto;padding:1rem}.chat-message{margin-bottom:1rem;padding:.75rem 1rem;border-radius:12px;max-width:85%;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.chat-message.user{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;margin-left:auto}.chat-message.assistant{background:#f1f3f5;color:var(--text-color)}.message-actions{opacity:0;transition:opacity .2s ease}.chat-message:hover .message-actions{opacity:1}.message-actions button{font-size:.9rem;transition:transform .15s ease}.message-actions button:hover{transform:scale(1.2)}.chat-message.user .message-actions button{color:hsla(0,0%,100%,.8)}.chat-message.user .message-actions button:hover{color:#fff}.edit-message-container textarea{border-radius:8px;font-size:.95rem}.chat-message.user .edit-message-container textarea{background:hsla(0,0%,100%,.95);color:#333}.chat-input-container{padding:1rem;border-top:1px solid #e9ecef;background:#f8f9fa}.chat-input-container textarea{resize:none;border-radius:20px;padding:.75rem 1rem;border:2px solid #e9ecef;transition:border-color .2s}.chat-input-container textarea:focus{border-color:#667eea;box-shadow:none}.slide-reference{display:inline-flex;align-items:center;gap:.25rem;padding:.25rem .5rem;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-radius:20px;font-size:.75rem;margin:.25rem}.slide-reference button{background:none;border:none;color:#fff;cursor:pointer;padding:0;line-height:1}.btn-gradient{background:linear-gradient(135deg,#667eea,#764ba2);border:none;color:#fff;padding:.5rem 1.5rem;border-radius:25px;font-weight:500;transition:all .3s ease}.btn-gradient:hover{transform:scale(1.05);box-shadow:0 5px 15px rgba(102,126,234,.4);color:#fff}.loading-spinner{display:inline-block;width:20px;height:20px;border-radius:50%;border:3px solid hsla(0,0%,100%,.3);border-top-color:#fff;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}.settings-container{max-width:600px;margin:0 auto}@media (max-width:768px){.chat-panel{height:400px;margin-top:1rem}.slide-navigation{flex-wrap:wrap}.app-header{padding:.75rem 1rem}.upload-zone{padding:2rem}}@media (max-width:576px){.app-header{padding:.5rem .75rem}.app-header h1{font-size:.9rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:150px}.app-header .btn-sm{padding:.25rem .5rem;font-size:.75rem}.mobile-tabs{display:flex;position:-webkit-sticky;position:sticky;top:55px;z-index:100;background:hsla(0,0%,100%,.95);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid #e9ecef}.mobile-tab{flex:1 1;padding:.75rem;text-align:center;border:none;background:transparent;font-size:.9rem;font-weight:500;color:#6c757d;transition:all .2s ease;position:relative}.mobile-tab.active{color:#667eea}.mobile-tab.active:after{content:"";position:absolute;bottom:0;left:20%;right:20%;height:3px;background:linear-gradient(135deg,#667eea,#764ba2);border-radius:3px 3px 0 0}.chat-toggle-btn{display:none}.mobile-content{height:calc(100vh - 110px);overflow:hidden}.mobile-chat-view,.mobile-slide-view{height:100%;display:none;flex-direction:column}.mobile-chat-view.active,.mobile-slide-view.active{display:flex}.mobile-slide-view .slide-container{flex:none;border-radius:0;box-shadow:none}.mobile-slide-view{overflow:hidden}.mobile-slide-view .slide-container:hover{transform:none}.mobile-slide-view .slide-navigation{padding:.5rem;gap:.5rem;background:#fff;border-top:1px solid #e9ecef;flex-shrink:0}.mobile-slide-view .slide-navigation .btn{padding:.4rem .75rem;font-size:.8rem}.mobile-slide-view .slide-navigation span{font-size:.85rem}.mobile-slide-thumbnails{display:flex;flex-wrap:wrap;gap:.5rem;padding:.75rem;background:hsla(0,0%,100%,.95);border-top:1px solid #e9ecef;justify-content:center;align-content:flex-start;flex:1 1;min-height:0;overflow-y:auto}.mobile-slide-thumbnails button{min-width:36px;height:36px;padding:0;font-size:.8rem;flex-shrink:0}.mobile-chat-view .chat-panel{height:100%;margin-top:0;border-radius:0;box-shadow:none}.mobile-chat-view .chat-panel:hover{transform:none}.mobile-chat-view .chat-panel .p-3{padding:.5rem .75rem!important}.mobile-chat-view .chat-panel h5{font-size:1rem}.mobile-chat-view .chat-panel .btn-outline-secondary[title*=\6536\5408]{display:none!important}.mobile-chat-view .form-select-sm{font-size:.75rem;padding:.25rem .5rem}.mobile-chat-view .chat-messages{padding:.75rem}.mobile-chat-view .chat-message{max-width:90%;padding:.5rem .75rem;font-size:.9rem}.mobile-chat-view .chat-input-container{padding:.5rem}.mobile-chat-view .chat-input-container textarea{padding:.5rem .75rem;font-size:.9rem}.mobile-chat-view .chat-input-container .btn-gradient{padding:.4rem .75rem;min-width:60px;font-size:.85rem}.desktop-layout{display:none!important}.container-fluid{padding:0!important}.delete-modal{margin:1rem;width:calc(100% - 2rem)}.mobile-chat-view .message-actions{opacity:1}.mobile-chat-view .message-actions button{font-size:1rem;padding:.25rem}}@media (max-width:915px) and (max-height:500px) and (orientation:landscape){.mobile-layout{display:none!important}.desktop-layout{display:flex!important}.app-header{padding:.25rem .5rem;position:-webkit-sticky;position:sticky;top:0;z-index:1000}.app-header h1{font-size:.8rem;max-width:120px}.app-header .btn-sm{padding:.15rem .4rem;font-size:.7rem}.app-header .gap-3{gap:.5rem!important}body{display:flex;flex-direction:column;min-height:100vh;max-height:100vh;overflow:hidden}.container-fluid{padding:.25rem .5rem!important;flex:1 1;min-height:0;display:flex;flex-direction:column}.container-fluid>.row,.desktop-layout{flex:1 1;min-height:0;display:flex!important;flex-wrap:nowrap!important;align-items:stretch!important}.desktop-layout>div:first-child{flex:1 1 55%!important;max-width:55%!important;min-height:0!important;display:flex!important;flex-direction:column!important;padding-right:.25rem!important}.desktop-layout>div:nth-child(2){flex:1 1 45%!important;max-width:45%!important;min-height:0!important;display:flex!important;flex-direction:column!important;padding-left:.25rem!important;padding-right:0!important}.desktop-layout .slide-container{flex:1 1 auto!important;display:flex!important;flex-direction:column!important;border-radius:8px!important;min-height:0!important}.slide-container:hover{transform:none}.pdf-viewer-container{flex:1 1 auto!important;overflow:auto!important;min-height:0!important}.slide-navigation{padding:.25rem;gap:.25rem;flex-shrink:0}.slide-navigation .btn{padding:.2rem .5rem;font-size:.75rem}.slide-navigation span{font-size:.75rem}.desktop-layout .mt-3.d-flex.gap-2.flex-wrap{display:none!important}.desktop-layout .chat-panel{flex:1 1 auto!important;border-radius:8px!important;display:flex!important;flex-direction:column!important;min-height:0!important}.desktop-layout .chat-panel:hover{transform:none}.desktop-layout .chat-messages{flex:1 1 auto!important;min-height:0!important;overflow-y:auto!important}.chat-panel .p-3{padding:.35rem .5rem!important}.chat-panel h5{font-size:.85rem}.chat-panel .mb-2{margin-bottom:.25rem!important}.chat-panel .form-select-sm{font-size:.7rem;padding:.15rem .3rem;max-width:100px!important}.chat-panel .text-muted{font-size:.7rem}.chat-messages{padding:.5rem}.chat-message{padding:.4rem .6rem;font-size:.85rem;margin-bottom:.5rem}.chat-message strong{font-size:.8rem}.chat-input-container{padding:.35rem}.chat-input-container textarea{padding:.3rem .5rem;font-size:.85rem;min-height:32px}.chat-input-container .btn-gradient{padding:.3rem .6rem;font-size:.8rem;min-width:50px!important}.chat-toggle-btn{display:none}.chat-panel>.p-2 .btn-outline-secondary,.chat-panel>.p-3 .btn-outline-secondary,.chat-panel>[class*=p-] .d-flex .btn-outline-secondary{display:none!important}.chat-input-container .btn-outline-secondary{padding:.2rem .4rem;font-size:.7rem}.delete-modal{max-width:300px}.delete-modal-header h3{font-size:1rem}.delete-modal-body{font-size:.9rem;margin-bottom:1rem}.markdown-content{font-size:.85rem;line-height:1.4}.markdown-content h1{font-size:1.1rem}.markdown-content h2{font-size:1rem}.markdown-content h3{font-size:.95rem}.markdown-content pre{padding:.5rem;font-size:.75rem}.markdown-content code{font-size:.8em}}@media (min-width:577px){.mobile-content,.mobile-layout,.mobile-tabs{display:none!important}}.markdown-content{font-size:.95rem;line-height:1.6}.markdown-content h1,.markdown-content h2,.markdown-content h3,.markdown-content h4,.markdown-content h5,.markdown-content h6{margin-top:1rem;margin-bottom:.5rem;font-weight:600}.markdown-content h1{font-size:1.5rem}.markdown-content h2{font-size:1.3rem}.markdown-content h3{font-size:1.15rem}.markdown-content h4{font-size:1.05rem}.markdown-content p{margin-bottom:.75rem}.markdown-content p:last-child{margin-bottom:0}.markdown-content ol,.markdown-content ul{margin-bottom:.75rem;padding-left:1.5rem}.markdown-content li{margin-bottom:.25rem}.markdown-content code{background:rgba(0,0,0,.1);padding:.15rem .4rem;border-radius:4px;font-family:Consolas,Monaco,monospace;font-size:.875em}.markdown-content pre{background:#1e1e1e;color:#d4d4d4;padding:1rem;border-radius:8px;overflow-x:auto;margin:.75rem 0}.markdown-content pre code{background:none;padding:0;color:inherit}.markdown-content blockquote{border-left:4px solid #667eea;padding-left:1rem;margin:.75rem 0;color:#555;font-style:italic}.markdown-content table{width:100%;border-collapse:collapse;margin:.75rem 0;font-size:.9em}.markdown-content td,.markdown-content th{border:1px solid #ddd;padding:.5rem;text-align:left}.markdown-content th{background:#f5f5f5;font-weight:600}.markdown-content a{color:#667eea;text-decoration:underline}.markdown-content hr{border:none;border-top:1px solid #ddd;margin:1rem 0}.chat-message.user .markdown-content code{background:hsla(0,0%,100%,.2)}.chat-message.user .markdown-content a{color:#fff}.delete-modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:2000;animation:fadeIn .2s ease}.delete-modal{background:#fff;border-radius:16px;padding:1.5rem;max-width:400px;width:90%;box-shadow:0 20px 60px rgba(0,0,0,.3);animation:modalSlideIn .3s ease}@keyframes modalSlideIn{0%{opacity:0;transform:scale(.9) translateY(-20px)}to{opacity:1;transform:scale(1) translateY(0)}}.delete-modal-header{display:flex;align-items:center;gap:.75rem;margin-bottom:1rem}.delete-modal-icon{font-size:1.5rem}.delete-modal-header h3{margin:0;font-size:1.25rem;font-weight:600;color:#333}.delete-modal-body{color:#666;margin-bottom:1.5rem;line-height:1.5}.delete-modal-actions{display:flex;justify-content:flex-end;gap:.75rem}.delete-modal-actions .btn{padding:.5rem 1.25rem;border-radius:8px;font-weight:500;transition:all .2s ease}.delete-modal-actions .btn-secondary{background:#f1f3f5;border:1px solid #e9ecef;color:#495057}.delete-modal-actions .btn-secondary:hover{background:#e9ecef}.delete-modal-actions .btn-danger{background:#dc3545;border:none;color:#fff}.delete-modal-actions .btn-danger:hover{background:#c82333;transform:scale(1.02)}