:root{--react-pdf-annotation-layer: 1;--annotation-unfocused-field-background: url("data:image/svg+xml;charset=UTF-8,<svg width='1px' height='1px' xmlns='http://www.w3.org/2000/svg'><rect width='100%' height='100%' style='fill:rgba(0, 54, 255, 0.13);'/></svg>");--input-focus-border-color: Highlight;--input-focus-outline: 1px solid Canvas;--input-unfocused-border-color: transparent;--input-disabled-border-color: transparent;--input-hover-border-color: black;--link-outline: none}@media screen and (forced-colors: active){:root{--input-focus-border-color: CanvasText;--input-unfocused-border-color: ActiveText;--input-disabled-border-color: GrayText;--input-hover-border-color: Highlight;--link-outline: 1.5px solid LinkText}.annotationLayer .textWidgetAnnotation :is(input,textarea):required,.annotationLayer .choiceWidgetAnnotation select:required,.annotationLayer .buttonWidgetAnnotation:is(.checkBox,.radioButton) input:required{outline:1.5px solid selectedItem}.annotationLayer .linkAnnotation:hover{-webkit-backdrop-filter:invert(100%);backdrop-filter:invert(100%)}}.annotationLayer{position:absolute;top:0;left:0;pointer-events:none;transform-origin:0 0;z-index:3}.annotationLayer[data-main-rotation="90"] .norotate{transform:rotate(270deg) translate(-100%)}.annotationLayer[data-main-rotation="180"] .norotate{transform:rotate(180deg) translate(-100%,-100%)}.annotationLayer[data-main-rotation="270"] .norotate{transform:rotate(90deg) translateY(-100%)}.annotationLayer canvas{position:absolute;width:100%;height:100%}.annotationLayer section{position:absolute;text-align:initial;pointer-events:auto;box-sizing:border-box;margin:0;transform-origin:0 0}.annotationLayer .linkAnnotation{outline:var(--link-outline)}.textLayer.selecting~.annotationLayer section{pointer-events:none}.annotationLayer :is(.linkAnnotation,.buttonWidgetAnnotation.pushButton)>a{position:absolute;font-size:1em;top:0;left:0;width:100%;height:100%}.annotationLayer :is(.linkAnnotation,.buttonWidgetAnnotation.pushButton)>a:hover{opacity:.2;background:#ff0;box-shadow:0 2px 10px #ff0}.annotationLayer .textAnnotation img{position:absolute;cursor:pointer;width:100%;height:100%;top:0;left:0}.annotationLayer .textWidgetAnnotation :is(input,textarea),.annotationLayer .choiceWidgetAnnotation select,.annotationLayer .buttonWidgetAnnotation:is(.checkBox,.radioButton) input{background-image:var(--annotation-unfocused-field-background);border:2px solid var(--input-unfocused-border-color);box-sizing:border-box;font:calc(9px * var(--scale-factor)) sans-serif;height:100%;margin:0;vertical-align:top;width:100%}.annotationLayer .textWidgetAnnotation :is(input,textarea):required,.annotationLayer .choiceWidgetAnnotation select:required,.annotationLayer .buttonWidgetAnnotation:is(.checkBox,.radioButton) input:required{outline:1.5px solid red}.annotationLayer .choiceWidgetAnnotation select option{padding:0}.annotationLayer .buttonWidgetAnnotation.radioButton input{border-radius:50%}.annotationLayer .textWidgetAnnotation textarea{resize:none}.annotationLayer .textWidgetAnnotation :is(input,textarea)[disabled],.annotationLayer .choiceWidgetAnnotation select[disabled],.annotationLayer .buttonWidgetAnnotation:is(.checkBox,.radioButton) input[disabled]{background:none;border:2px solid var(--input-disabled-border-color);cursor:not-allowed}.annotationLayer .textWidgetAnnotation :is(input,textarea):hover,.annotationLayer .choiceWidgetAnnotation select:hover,.annotationLayer .buttonWidgetAnnotation:is(.checkBox,.radioButton) input:hover{border:2px solid var(--input-hover-border-color)}.annotationLayer .textWidgetAnnotation :is(input,textarea):hover,.annotationLayer .choiceWidgetAnnotation select:hover,.annotationLayer .buttonWidgetAnnotation.checkBox input:hover{border-radius:2px}.annotationLayer .textWidgetAnnotation :is(input,textarea):focus,.annotationLayer .choiceWidgetAnnotation select:focus{background:none;border:2px solid var(--input-focus-border-color);border-radius:2px;outline:var(--input-focus-outline)}.annotationLayer .buttonWidgetAnnotation:is(.checkBox,.radioButton) :focus{background-image:none;background-color:transparent}.annotationLayer .buttonWidgetAnnotation.checkBox :focus{border:2px solid var(--input-focus-border-color);border-radius:2px;outline:var(--input-focus-outline)}.annotationLayer .buttonWidgetAnnotation.radioButton :focus{border:2px solid var(--input-focus-border-color);outline:var(--input-focus-outline)}.annotationLayer .buttonWidgetAnnotation.checkBox input:checked:before,.annotationLayer .buttonWidgetAnnotation.checkBox input:checked:after,.annotationLayer .buttonWidgetAnnotation.radioButton input:checked:before{background-color:CanvasText;content:"";display:block;position:absolute}.annotationLayer .buttonWidgetAnnotation.checkBox input:checked:before,.annotationLayer .buttonWidgetAnnotation.checkBox input:checked:after{height:80%;left:45%;width:1px}.annotationLayer .buttonWidgetAnnotation.checkBox input:checked:before{transform:rotate(45deg)}.annotationLayer .buttonWidgetAnnotation.checkBox input:checked:after{transform:rotate(-45deg)}.annotationLayer .buttonWidgetAnnotation.radioButton input:checked:before{border-radius:50%;height:50%;left:30%;top:20%;width:50%}.annotationLayer .textWidgetAnnotation input.comb{font-family:monospace;padding-left:2px;padding-right:0}.annotationLayer .textWidgetAnnotation input.comb:focus{width:103%}.annotationLayer .buttonWidgetAnnotation:is(.checkBox,.radioButton) input{-webkit-appearance:none;-moz-appearance:none;appearance:none}.annotationLayer .popupTriggerArea{height:100%;width:100%}.annotationLayer .fileAttachmentAnnotation .popupTriggerArea{position:absolute}.annotationLayer .popupWrapper{position:absolute;font-size:calc(9px * var(--scale-factor));width:100%;min-width:calc(180px * var(--scale-factor));pointer-events:none}.annotationLayer .popup{position:absolute;max-width:calc(180px * var(--scale-factor));background-color:#ff9;box-shadow:0 calc(2px * var(--scale-factor)) calc(5px * var(--scale-factor)) #888;border-radius:calc(2px * var(--scale-factor));padding:calc(6px * var(--scale-factor));margin-left:calc(5px * var(--scale-factor));cursor:pointer;font:message-box;white-space:normal;word-wrap:break-word;pointer-events:auto}.annotationLayer .popup>*{font-size:calc(9px * var(--scale-factor))}.annotationLayer .popup h1{display:inline-block}.annotationLayer .popupDate{display:inline-block;margin-left:calc(5px * var(--scale-factor))}.annotationLayer .popupContent{border-top:1px solid rgba(51,51,51,1);margin-top:calc(2px * var(--scale-factor));padding-top:calc(2px * var(--scale-factor))}.annotationLayer .richText>*{white-space:pre-wrap;font-size:calc(9px * var(--scale-factor))}.annotationLayer .highlightAnnotation,.annotationLayer .underlineAnnotation,.annotationLayer .squigglyAnnotation,.annotationLayer .strikeoutAnnotation,.annotationLayer .freeTextAnnotation,.annotationLayer .lineAnnotation svg line,.annotationLayer .squareAnnotation svg rect,.annotationLayer .circleAnnotation svg ellipse,.annotationLayer .polylineAnnotation svg polyline,.annotationLayer .polygonAnnotation svg polygon,.annotationLayer .caretAnnotation,.annotationLayer .inkAnnotation svg polyline,.annotationLayer .stampAnnotation,.annotationLayer .fileAttachmentAnnotation{cursor:pointer}.annotationLayer section svg{position:absolute;width:100%;height:100%;top:0;left:0}.annotationLayer .annotationTextContent{position:absolute;width:100%;height:100%;opacity:0;color:transparent;-webkit-user-select:none;user-select:none;pointer-events:none}.annotationLayer .annotationTextContent span{width:100%;display:inline-block}:root{--react-pdf-text-layer: 1;--highlight-bg-color: rgba(180, 0, 170, 1);--highlight-selected-bg-color: rgba(0, 100, 0, 1)}@media screen and (forced-colors: active){:root{--highlight-bg-color: Highlight;--highlight-selected-bg-color: ButtonText}}[data-main-rotation="90"]{transform:rotate(90deg) translateY(-100%)}[data-main-rotation="180"]{transform:rotate(180deg) translate(-100%,-100%)}[data-main-rotation="270"]{transform:rotate(270deg) translate(-100%)}.textLayer{position:absolute;text-align:initial;top:0;right:0;bottom:0;left:0;overflow:hidden;line-height:1;text-size-adjust:none;forced-color-adjust:none;transform-origin:0 0;z-index:2}.textLayer :is(span,br){color:transparent;position:absolute;white-space:pre;cursor:text;margin:0;transform-origin:0 0}.textLayer span.markedContent{top:0;height:0}.textLayer .highlight{margin:-1px;padding:1px;background-color:var(--highlight-bg-color);border-radius:4px}.textLayer .highlight.appended{position:initial}.textLayer .highlight.begin{border-radius:4px 0 0 4px}.textLayer .highlight.end{border-radius:0 4px 4px 0}.textLayer .highlight.middle{border-radius:0}.textLayer .highlight.selected{background-color:var(--highlight-selected-bg-color)}.textLayer br::selection{background:transparent}.textLayer .endOfContent{display:block;position:absolute;top:100%;right:0;bottom:0;left:0;z-index:-1;cursor:default;-webkit-user-select:none;user-select:none}.textLayer.selecting .endOfContent{top:0}.hiddenCanvasElement{position:absolute;top:0;left:0;width:0;height:0;display:none}@font-face{font-family:revicons;fallback:fallback;src:url(/assets/revicons-DbTteTvA.woff) format("woff"),url(/assets/revicons-CBqxZnew.ttf) format("ttf"),url(/assets/revicons-BNIKeAUC.eot) format("ttf")}.react-multi-carousel-list{display:flex;align-items:center;overflow:hidden;position:relative}.react-multi-carousel-track{list-style:none;padding:0;margin:0;display:flex;flex-direction:row;position:relative;transform-style:preserve-3d;backface-visibility:hidden;will-change:transform,transition}.react-multiple-carousel__arrow{position:absolute;outline:0;transition:all .5s;border-radius:35px;z-index:1000;border:0;background:#00000080;min-width:43px;min-height:43px;opacity:1;cursor:pointer}.react-multiple-carousel__arrow:hover{background:#000c}.react-multiple-carousel__arrow:before{font-size:20px;color:#fff;display:block;font-family:revicons;text-align:center;z-index:2;position:relative}.react-multiple-carousel__arrow:disabled{cursor:default;background:#00000080}.react-multiple-carousel__arrow--left{left:calc(4% + 1px)}.react-multiple-carousel__arrow--left:before{content:""}.react-multiple-carousel__arrow--right{right:calc(4% + 1px)}.react-multiple-carousel__arrow--right:before{content:""}.react-multi-carousel-dot-list{position:absolute;bottom:0;display:flex;left:0;right:0;justify-content:center;padding:0;margin:0;list-style:none;text-align:center}.react-multi-carousel-dot button{display:inline-block;width:12px;height:12px;border-radius:50%;opacity:1;box-shadow:none;transition:background .5s;border-width:2px;border-style:solid;border-color:gray;padding:0;margin:0 6px 0 0;outline:0;cursor:pointer}.react-multi-carousel-dot button:hover:active,.react-multi-carousel-dot--active button{background:#080808}.react-multi-carousel-item{transform-style:preserve-3d;backface-visibility:hidden}@media all and (-ms-high-contrast:none),(-ms-high-contrast:active){.react-multi-carousel-item{flex-shrink:0!important}.react-multi-carousel-track{overflow:visible!important}}[dir=rtl].react-multi-carousel-list{direction:rtl}.rtl.react-multiple-carousel__arrow--right{right:auto;left:calc(4% + 1px)}.rtl.react-multiple-carousel__arrow--right:before{content:""}.rtl.react-multiple-carousel__arrow--left{left:auto;right:calc(4% + 1px)}.rtl.react-multiple-carousel__arrow--left:before{content:""}.home-page{width:100%;min-height:100vh;padding:104px 0 48px;overflow-x:hidden}.files-section,.quizzes-section{width:min(1180px,calc(100% - 32px));margin:0 auto 2.35rem}.page-intro,.login-panel{width:min(1180px,calc(100% - 32px));margin:0 auto 1.75rem;padding:1.75rem 2rem;border-radius:24px;background:#ffffffc7;border:1px solid rgba(142,156,147,.2);box-shadow:0 24px 60px #59482714;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.page-intro h1,.login-panel h1{margin:0 0 .75rem;font-size:clamp(2rem,4vw,3rem);line-height:1.05;color:#1e293b}.page-intro p,.login-panel p{margin:0;max-width:760px;color:#52606d;font-size:1rem}.intro-badges{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:1.25rem}.intro-badge{padding:.55rem .9rem;border-radius:999px;background:#2a634d14;color:#295a49;font-size:.92rem;font-weight:600}.section-header{display:flex;justify-content:space-between;align-items:flex-end;gap:1rem;margin:0 auto 1.1rem;padding:0 .35rem}.section-header h2{margin:0;font-size:clamp(1.35rem,2vw,1.8rem);color:#22313f;letter-spacing:-.02em}.section-heading-block{display:flex;flex-direction:column;gap:.3rem}.section-kicker{margin:0;font-size:.78rem;font-weight:800;letter-spacing:.18em;text-transform:uppercase;color:#6c7d73}.section-description{margin:0;color:#60717d;font-size:.96rem;max-width:640px}@media (max-width: 768px){.home-page{padding-top:88px}.page-intro,.login-panel{padding:1.4rem 1.25rem;border-radius:20px}.section-header{flex-direction:column;align-items:flex-start}.section-description{font-size:.92rem}.files-section,.quizzes-section{margin-bottom:1.9rem}}.nav-bar{position:fixed;top:16px;left:50%;transform:translate(-50%);width:min(1180px,calc(100% - 32px));height:68px;background:#ffffffd6;border:1px solid rgba(142,156,147,.22);border-radius:20px;box-shadow:0 18px 42px #42341c1f;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);display:flex;align-items:center;justify-content:space-between;padding:0 1.4rem 0 1.1rem;z-index:1000}.nav-logo{width:156px;height:auto;filter:none;margin:0}.nav-brand{font-size:1.15rem;font-weight:700;color:#1f2d3a;display:flex;align-items:center;gap:.85rem;letter-spacing:-.02em}.nav-menu{display:flex;gap:1rem;align-items:center}.nav-button{margin:0;padding:.72rem 1.25rem;border-radius:999px;background:linear-gradient(135deg,#2d6f5b,#5d927d);color:#fff;border:none;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;font-size:.95rem;font-weight:600;box-shadow:0 12px 24px #2d6f5b3d}.nav-button:hover{transform:translateY(-1px);filter:brightness(1.02)}@media (max-width: 768px){.nav-bar{top:10px;height:auto;padding:.85rem 1rem;gap:.75rem;align-items:flex-start;flex-direction:column}.nav-brand{font-size:1rem}.nav-logo{width:138px}.nav-menu{width:100%;justify-content:flex-end}}.file-slider,.quiz-slider{position:relative;width:100%;margin:0 auto;padding:.25rem 0 1.35rem;overflow:hidden}.file-slider-container,.quiz-slider-container{position:relative;padding:1.2rem 1.05rem 2.95rem;border-radius:28px;background:radial-gradient(circle at top right,rgba(88,144,119,.12),transparent 28%),#ffffffb8;border:1px solid rgba(142,156,147,.2);box-shadow:0 24px 54px #5a4b2c17;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);opacity:1;filter:blur(0);transition:opacity .3s ease-in-out,filter .3s ease-in-out;overflow:hidden}.file-slider-container.loading,.quiz-slider-container.loading{opacity:.45;pointer-events:none;cursor:not-allowed;filter:blur(3px)}.slider-loading-caption{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:#2d6f5b;font-weight:700;z-index:100}.slider-refresh-button{margin:0;padding:.76rem 1.18rem;border-radius:999px;background:linear-gradient(135deg,#2d6f5b1f,#5d927d24);color:#275947;border:1px solid rgba(45,111,91,.16);cursor:pointer;transition:background .2s ease,transform .2s ease,box-shadow .2s ease;font-size:.92rem;font-weight:600}.slider-refresh-button:hover{background:#2d6f5b29;transform:translateY(-1px);box-shadow:0 12px 24px #2d6f5b1a}.slider-dot{list-style:none;color:#2d6f5b59;transition:color .2s ease,transform .2s ease}.slider-dot.active{color:#2d6f5b;transform:scale(1.08)}.carousel-card-item{padding:0 8px 8px}.react-multi-carousel-list{overflow:hidden;margin:0 -8px;padding:0 8px}.react-multi-carousel-dot-list{bottom:10px}@media (max-width: 768px){.file-slider-container,.quiz-slider-container{padding:.95rem .8rem 2.55rem;border-radius:22px}.carousel-card-item{padding:0 4px 8px}.react-multi-carousel-list{margin:0 -4px;padding:0 4px}}.file-card,.quiz-card{width:100%;min-height:100%;background:radial-gradient(circle at top right,rgba(90,146,121,.12),transparent 34%),linear-gradient(180deg,#fffffffa,#f7f8f4f0);border-radius:24px;padding:1.2rem;box-shadow:0 18px 42px #4f442a1a;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;cursor:pointer;border:1px solid rgba(135,151,142,.18);position:relative;overflow:hidden}.file-card{min-height:230px}.quiz-card{min-height:380px}.file-card:hover,.quiz-card:hover{transform:translateY(-4px);box-shadow:0 20px 42px #4f442a1f}.file-card.selected,.quiz-card.selected{border-color:#2d6f5b73;background:linear-gradient(180deg,#f6fcf9fa,#eef7f3fa)}.new-file-card,.new-quiz-card{display:flex;align-items:center;justify-content:center;border-style:dashed;border-width:1.5px;background:linear-gradient(180deg,#f7fbf8f2,#eef6f2ed)}.file-card-content,.quiz-card-content{display:flex;flex-direction:column;gap:1rem;height:100%}.quiz-card-content{gap:1.15rem}.file-card-header,.quiz-card-header{display:flex;flex-direction:column;gap:.75rem;align-items:stretch}.file-card-header h3,.quiz-card h3,.quiz-card-header h3{margin:0;font-size:1.12rem;color:#22313f;line-height:1.3;word-break:break-word;text-align:left}.file-card-body,.quiz-card-body,.quiz-data-container{display:flex;flex-direction:column;gap:.8rem}.file-size,.quiz-files,.quiz-difficulty,.quiz-length,.quiz-created-at,.quiz-tags{margin:0;color:#5a6875;font-size:.95rem}.card-title-row{display:flex;align-items:flex-start;justify-content:space-between;gap:.85rem}.card-supporting-text{margin:0;color:#657580;font-size:.94rem;line-height:1.5}.card-metadata-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem}.card-metadata-item{display:flex;flex-direction:column;gap:.22rem;padding:.8rem .9rem;border-radius:16px;background:#f5f7f3e0;border:1px solid rgba(140,154,145,.16)}.card-metadata-item-wide{grid-column:1 / -1}.card-metadata-label{font-size:.74rem;letter-spacing:.08em;text-transform:uppercase;color:#73838f;font-weight:700}.card-metadata-value{color:#22313f;font-size:.97rem;font-weight:600;word-break:break-word}.file-status,.quiz-status{margin:0;align-self:flex-start;padding:.42rem .82rem;border-radius:999px;font-size:.86rem;font-weight:700;text-align:center;flex-shrink:0}.file-status.complete,.quiz-status.complete{background-color:#e7f6ee;color:#26734d}.file-status.processing,.file-status.uploading,.quiz-status.creating{background-color:#fff2dc;color:#b36a12}.file-status.failed,.file-status.error,.quiz-status.error{background-color:#fde7e4;color:#b64033}.file-card-buttons,.quiz-card-buttons{display:flex;gap:.65rem;justify-content:flex-start;flex-wrap:wrap;margin-top:auto}.file-card-download-button,.quiz-card-take-button,.file-card-delete-button,.quiz-card-delete-button{margin:0;min-width:122px;border:none;border-radius:999px;padding:.75rem 1rem;font-weight:700;transition:transform .2s ease,box-shadow .2s ease,opacity .2s ease}.file-card-download-button,.quiz-card-take-button{background:linear-gradient(135deg,#2d6f5b,#5d927d);color:#fff;box-shadow:0 12px 24px #2d6f5b2e}.file-card-delete-button,.quiz-card-delete-button{background:#f4dfdb;color:#9d3f35}.new-card-icon{width:54px;height:54px;display:inline-flex;align-items:center;justify-content:center;border-radius:18px;background:linear-gradient(135deg,#2d6f5b,#7ba38d);color:#fff;font-size:2rem;font-weight:500;box-shadow:0 14px 30px #2d6f5b38}.new-file-card .file-card-content,.new-quiz-card .quiz-card-content{justify-content:center}.file-card-download-button:disabled,.quiz-card-take-button:disabled,.file-card-delete-button:disabled,.quiz-card-delete-button:disabled{opacity:.55;cursor:not-allowed}.file-card-download-button:hover:not(:disabled),.file-card-delete-button:hover:not(:disabled),.quiz-card-take-button:hover:not(:disabled),.quiz-card-delete-button:hover:not(:disabled){transform:translateY(-1px)}@media (max-width: 768px){.file-card,.quiz-card{padding:1rem;border-radius:20px}.quiz-card{min-height:320px}.file-card{min-height:210px}.card-title-row{flex-direction:column}.card-metadata-grid{grid-template-columns:1fr}}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#1c24216b;display:flex;justify-content:center;align-items:center;padding:1rem;z-index:1000}.modal{background:#fffffff5;padding:2rem;border-radius:24px;width:min(720px,100%);max-height:85vh;overflow-y:auto;box-shadow:0 30px 70px #2f26142e;border:1px solid rgba(142,156,147,.2)}.modal h2{margin-top:0;margin-bottom:.55rem;color:#203241}.modal-intro{margin:0 0 1.2rem;color:#61717c;line-height:1.6}.modal-actions{display:flex;justify-content:flex-end;gap:.75rem;margin-top:1.5rem}.file-drop-zone{display:flex;flex-direction:column;align-items:center;gap:.35rem;padding:1.5rem;border-radius:20px;border:1.5px dashed rgba(45,111,91,.28);background:linear-gradient(180deg,#f8fcfaf5,#f1f7f4f2);text-align:center}.file-drop-zone input[type=file]{width:100%;max-width:280px}.drop-zone-title{margin:0;font-size:1.05rem;font-weight:700;color:#203241}.drop-zone-divider{margin:.25rem 0 .9rem;color:#61717c}.file-restrictions{margin:.65rem 0 0;color:#6b7c87;font-size:.92rem}.modal-status-text{color:#2d6f5b;font-weight:700}.error-message{color:#b64033;background:#fde7e4;border:1px solid rgba(182,64,51,.12);border-radius:14px;padding:.8rem .95rem}.file-selection{display:flex;flex-direction:column;gap:10px;margin:1rem 0}.file-select-item{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.9rem 1rem;border-radius:16px;cursor:pointer;transition:background-color .2s ease,border-color .2s ease;border:1px solid rgba(142,156,147,.16);background:#f8fbf9cc}.file-select-item:hover{background-color:#2d6f5b0f}.file-select-item.selected{background-color:#2d6f5b1a;border-color:#2d6f5b2e}.file-select-item span{color:#203241}.file-select-item .status{margin-left:auto;padding:.32rem .65rem;border-radius:999px;font-size:.8rem;font-weight:700;text-transform:capitalize}.file-select-item .status.complete{background:#e7f6ee;color:#26734d}.file-select-item .status.processing,.file-select-item .status.uploading{background:#fff2dc;color:#b36a12}.file-select-item .status.failed,.file-select-item .status.error{background:#fde7e4;color:#b64033}.accordion{background:linear-gradient(135deg,#e3ede7,#edf4f0);color:#203241;cursor:pointer;padding:1rem 1.2rem;width:100%;text-align:left;border:1px solid rgba(142,156,147,.18);outline:none;transition:background-color .2s ease;border-radius:16px;font-weight:700}.quiz-settings-panel{margin:.85rem auto 0;padding:0 .1rem;border-radius:16px;overflow:hidden;max-height:0;transition:max-height .5s ease-out}.quiz-difficulty-select{font-size:1rem;width:100%;border-radius:12px;border:1px solid rgba(142,156,147,.22);padding:.75rem .85rem;background:#fff}.quiz-length-container{display:flex;align-items:center;justify-content:center;gap:.5rem}.quiz-setting-row{display:flex;flex-direction:column;gap:.7rem;margin-bottom:1rem;padding:1rem 1rem 0}.quiz-setting-row label{color:#203241;font-weight:700}.quiz-length-control-group{display:flex;flex-direction:column;gap:.75rem}.quiz-checkbox-row{display:inline-flex;align-items:center;gap:.55rem;color:#5f6f7b;font-weight:600}.slider-tooltip{min-height:1.4rem;padding:0 1rem 1rem;color:#2d6f5b;font-weight:700}.quiz-modal{max-width:1100px;min-width:min(950px,100%)}.question-source{background-color:#f1f6f3;color:#1f3440;padding:.55rem .7rem;margin-bottom:1rem;border-radius:12px;border:1px solid rgba(142,156,147,.22)}.quiz-content{display:flex;flex-direction:column;gap:1.5rem}.question-card{background:linear-gradient(180deg,#fbfdfc,#f4f8f6);padding:1.5rem;border-radius:22px;border:1px solid rgba(142,156,147,.18);box-shadow:inset 0 1px #ffffffb3}.question-text{font-size:1.1rem;margin-bottom:1.2rem}.options-container{display:flex;flex-direction:column;gap:.8rem}.option-button{width:100%;padding:1rem 1.25rem;text-align:left;border:2px solid rgba(45,111,91,.14);border-radius:14px;background:#fff;cursor:pointer;font-size:1rem;position:relative;transition:all .2s ease;color:#203241}.option-button:hover:not(:disabled){background:#2d6f5b0f;border-color:#2d6f5b47}.option-button.selected{background:#2d6f5b1f;border-color:#2d6f5b}.option-button.correct{background:#26734d1f;border-color:#26734d}.option-button.incorrect{background:#b640331a;border-color:#b64033}.correct-mark{position:absolute;right:1.2rem;top:50%;transform:translateY(-50%);color:#26734d;font-size:.82rem;font-weight:800;letter-spacing:.06em}.explanation{margin-top:1rem;padding:1rem;background:#2d6f5b0f;border-radius:14px;border:1px solid rgba(45,111,91,.12)}.explanation h4{margin:0 0 .5rem;color:#2d6f5b}.quiz-result{padding:1.35rem 1.4rem;border-radius:20px;background:linear-gradient(135deg,#f5f9f6f5,#ecf5f1f5);border:1px solid rgba(142,156,147,.2);box-shadow:0 16px 34px #364d4114}.quiz-result-header h3{margin:0 0 .35rem;color:#203241}.quiz-result-subtitle{margin:0;color:#60717d}.quiz-result-score{margin:1rem 0 .4rem;font-size:1.05rem;font-weight:700;color:#203241}.quiz-feedback{margin:0;color:#2d6f5b;font-weight:700}@media (max-width: 768px){.modal{padding:1.35rem;border-radius:20px}.quiz-modal{min-width:100%}.file-select-item{align-items:flex-start;flex-wrap:wrap}}.file-viewer-container{height:100%;width:100%;display:flex}.file-sources-sidebar{width:30%;min-width:200px;padding:10px;border-right:1px solid #ccc;overflow:auto;flex:1}.file-sources-sidebar-item{margin-bottom:1rem;border:1px solid #e0e0e0;border-radius:4px;padding:.75rem;background-color:#696969;box-shadow:0 1px 3px #0000001a;transition:all .2s ease}.file-sources-sidebar-item-link{text-decoration:none;color:#fff;font-size:.875rem;font-weight:300;display:block;line-height:1.5;text-align:left}.pdf-viewer-content,.txt-viewer-content{flex:1;display:flex;flex-direction:column}.pdf-viewer-content-inner,.txt-viewer-content-inner{margin-top:10px;overflow:auto}.txt-viewer-source{background-color:#ff0}#root{width:100%;min-height:100vh;margin:0;padding:0}:root{font-family:Segoe UI,Helvetica Neue,Arial,sans-serif;line-height:1.5;font-weight:400;color:#1f2937;background:radial-gradient(circle at top,#ffffffeb,#f6f1e9d6),linear-gradient(180deg,#f6f1e9,#eef5f3);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;color-scheme:light}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px;min-height:100vh;background:radial-gradient(circle at top,#ffffffeb,#f6f1e9d6),linear-gradient(180deg,#f6f1e9,#eef5f3);color:#1f2937}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}