.activity-combobox{width:100%;position:relative}.activity-combobox__input-wrapper{align-items:center;display:flex;position:relative}.activity-combobox__input{background-color:#fff;border:1px solid #ddd;border-radius:4px;width:100%;padding:8px 32px 8px 12px;font-size:14px;line-height:1.4;transition:border-color .2s,box-shadow .2s}.activity-combobox__input:focus{border-color:#007bff;outline:none;box-shadow:0 0 0 2px rgba(0,123,255,.25)}.activity-combobox__input::placeholder{color:#999}.activity-combobox__toggle{cursor:pointer;color:#666;background:0 0;border:none;justify-content:center;align-items:center;padding:4px;transition:color .2s;display:flex;position:absolute;top:50%;right:8px;transform:translateY(-50%)}.activity-combobox__toggle:hover{color:#333}.activity-combobox__toggle:focus{color:#007bff;outline:none}.activity-combobox__arrow{font-size:12px;transition:transform .2s}.activity-combobox__arrow--up{transform:rotate(180deg)}.activity-combobox__dropdown{z-index:1000;background:#fff;border:1px solid #ddd;border-top:none;border-radius:0 0 4px 4px;max-height:200px;position:absolute;top:100%;left:0;right:0;overflow:hidden;box-shadow:0 2px 8px rgba(0,0,0,.1)}.activity-combobox__list{max-height:200px;margin:0;padding:0;list-style:none;overflow-y:auto}.activity-combobox__option{cursor:pointer;color:#333;border-bottom:1px solid #f0f0f0;padding:8px 12px;font-size:14px;line-height:1.4;transition:background-color .15s}.activity-combobox__option:last-child{border-bottom:none}.activity-combobox__option:hover,.activity-combobox__option--highlighted{background-color:#f8f9fa}.activity-combobox__option--highlighted{background-color:#e3f2fd}.activity-combobox__option[aria-selected=true]{color:#fff;background-color:#007bff}.activity-combobox__no-options{color:#999;text-align:center;padding:8px 12px;font-size:14px;font-style:italic}.activity-combobox--open .activity-combobox__input{border-bottom-color:#ddd;border-bottom-right-radius:0;border-bottom-left-radius:0}.activity-combobox__list{scrollbar-width:thin;scrollbar-color:#ccc transparent}.activity-combobox__list::-webkit-scrollbar{width:6px}.activity-combobox__list::-webkit-scrollbar-track{background:0 0}.activity-combobox__list::-webkit-scrollbar-thumb{background-color:#ccc;border-radius:3px}.activity-combobox__list::-webkit-scrollbar-thumb:hover{background-color:#999}@media (prefers-color-scheme:dark){.activity-combobox__input{color:#fff;background-color:#2d2d2d;border-color:#555}.activity-combobox__input:focus{border-color:#0d6efd}.activity-combobox__input::placeholder{color:#aaa}.activity-combobox__dropdown{background:#2d2d2d;border-color:#555}.activity-combobox__option{color:#fff;border-bottom-color:#444}.activity-combobox__option:hover,.activity-combobox__option--highlighted{background-color:#3d3d3d}.activity-combobox__option--highlighted{background-color:#1e3a5f}.activity-combobox__no-options,.activity-combobox__toggle{color:#aaa}.activity-combobox__toggle:hover{color:#fff}}.chat-header-container{background-color:#fff;border-bottom:1px solid #f2f2f2}.chat-header{background-color:#fff;justify-content:space-between;align-items:center;padding:14px 16px;display:flex;position:relative}.chat-header__left,.chat-header__right{flex:none;align-items:center;gap:8px;display:flex}.chat-header__left{justify-content:flex-start}.chat-header__center{flex:auto;justify-content:center;align-items:center;display:flex}.chat-header__right{justify-content:flex-end}.chat-header__button{cursor:pointer;background:0 0;border:none;border-radius:4px;justify-content:center;align-items:center;padding:8px;transition:background-color .2s;display:flex}.chat-header__button:hover{cursor:pointer}.chat-header__badge{background-color:var(--color-tangerine-ai,#bc3ebc);color:#fff;border-radius:10px;justify-content:center;align-items:center;min-width:20px;height:20px;margin-left:8px;padding:0 6px;font-size:12px;font-weight:700;display:flex}.chat-header__divider{background-color:#f2f2f2;width:1px;height:30px;margin:0 8px}.chat-link{color:var(--color-tangerine-ai,#bc3ebc);cursor:pointer;font-weight:600;text-decoration:none;transition:all .2s;display:inline-block}.chat-link:hover{color:var(--color-tangerine-ai,#bc3ebc);text-decoration:underline}.chat-link:active{color:var(--color-tangerine-ai-dark,#741571);text-decoration:underline}.chat-link:focus{outline:2px solid var(--color-tangerine-ai,#bc3ebc);outline-offset:2px;border-radius:2px}.chat-link:focus-visible{outline:2px solid var(--color-tangerine-ai,#bc3ebc);outline-offset:2px;border-radius:2px}.chat-link:focus:not(:focus-visible){outline:none}.chat-link--disabled{color:var(--color-tangerine-ai,#bc3ebc);opacity:.5;cursor:not-allowed;pointer-events:none;text-decoration:none}.chat-link--disabled:hover{text-decoration:none}.chat-d3-card{cursor:pointer;background:#fff;border:1px solid #e0e0e0;border-radius:8px;margin:8px 0;transition:all .2s}.chat-d3-card:hover{transform:translateY(-1px);box-shadow:0 4px 8px rgba(0,0,0,.1)}.chat-d3-card__header{padding:8px}.chat-d3-card__title{font-family:var(--font-second);color:#4e4e4e;flex:1;font-size:18px;font-weight:700}.chat-d3-card__footer{background-color:#f9f9f9;border-top:1px solid #e0e0e0;border-radius:0 0 8px 8px;margin-top:0;padding:8px}.chat-d3-card__footer__content{justify-content:space-between;align-items:center;gap:8px;display:flex}.chat-d3-card__footer__title{color:#333;align-items:center;gap:4px;font-size:15px;font-weight:600;display:flex}.chat-d3-card__footer__title svg path{fill:#333}.chat-d3-card__footer__button{color:var(--color-tangerine-ai,#bc3ebc);cursor:pointer;background:0 0;border:none;padding:0;font-size:14px;text-decoration:underline}.chat-d3-card__footer__button:hover{color:var(--color-tangerine-ai-dark,#741571)}.ai-revision-loading{z-index:2147483647;justify-content:center;align-items:center;width:100%;height:100%;display:flex;position:fixed;top:0;left:0}.ai-revision-loading__backdrop{background:var(--color-background);width:100%;height:100%;position:absolute;top:0;left:0}.ai-revision-loading__content{flex-direction:column;justify-content:center;align-items:center;gap:16px;padding:24px;display:flex;position:relative}.ai-revision-loading__bot-container{justify-content:center;align-items:center;display:flex;position:relative}.ai-revision-loading__bot{width:120px;height:auto;animation:2s ease-in-out infinite ai-revision-loading-bounce}.ai-revision-loading__stars{pointer-events:none;width:100%;height:100%;position:absolute}.ai-revision-loading__star{color:var(--color-first);font-size:28px;animation:1.5s ease-in-out infinite ai-revision-loading-sparkle;position:absolute}.ai-revision-loading__star--1{animation-delay:0s;top:-10px;right:-15px}.ai-revision-loading__star--2{animation-delay:.75s;bottom:10px;left:-20px}.ai-revision-loading__text{font-family:var(--font-first);color:#4e4e4e;text-align:center;max-width:300px;font-size:22px;animation:.3s ease-in-out ai-revision-loading-fade}@keyframes ai-revision-loading-bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes ai-revision-loading-sparkle{0%,to{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.8)}}@keyframes ai-revision-loading-fade{0%{opacity:0}to{opacity:1}}.chat-badge{border-radius:16px;align-items:center;gap:4px;padding:4px 8px;font-size:14px;display:inline-flex}.chat-badge__emoji{font-size:inherit}.chat-badge__text{font-family:var(--font-second);color:transparent;-webkit-background-clip:text;background-clip:text;font-weight:600;line-height:26px}.chat-badge--practice{background-color:#d6f6ff}.chat-badge--practice .chat-badge__text{color:#0a3366}.chat-badge--study{background-color:#ffe8ff}.chat-badge--study .chat-badge__text{color:#6b0a6b}.chat-badge--revision{background-color:#fff3e0}.chat-badge--revision .chat-badge__text{color:#e65100}.analytics-filter-bar{align-items:center;gap:16px;display:flex}.analytics-filter-bar__filter{min-width:200px}.distribution-bar,.distribution-bar__container{width:100%;position:relative}.distribution-bar__container--with-labels-above{margin-top:40px}.distribution-bar__segments-wrapper{width:100%;height:24px;display:flex}.distribution-bar__segment-wrapper{flex-direction:column;align-items:center;height:24px;display:flex;position:relative}.distribution-bar__segment-wrapper--with-border:after{content:"";border-right:2px dashed #0095a2;width:1px;position:absolute;top:-10px;bottom:-10px;right:0}.distribution-bar__label-container{z-index:2;flex-direction:column;align-items:center;display:flex;position:absolute;top:-40px;left:100%;transform:translate(-50%)}.distribution-bar__label-container--last{transform:translate(-100%)}.distribution-bar__percentage-value{font-size:18px;font-weight:700;font-family:var(--font-first);color:#4e4e4e;white-space:nowrap;line-height:28px}.distribution-bar__segment{justify-content:center;align-items:center;width:100%;height:100%;display:flex;position:relative}.distribution-bar__segment--mastered{background-color:#0095a2}.distribution-bar__segment--in-progress{background-color:#00b4c5}.distribution-bar__segment--not-started{background-color:#d4fbff}.distribution-bar__segment-label{font-size:12px;font-weight:600;font-family:var(--font-first);color:#333;white-space:nowrap;z-index:1}.distribution-bar__segment--first{border-radius:8px 0 0 8px}.distribution-bar__segment--last{border-radius:0 8px 8px 0}.distribution-bar__segment--only{border-radius:8px}.distribution-bar__segment-wrapper:first-child .distribution-bar__segment{border-radius:8px 0 0 8px}.distribution-bar__segment-wrapper:last-child .distribution-bar__segment{border-radius:0 8px 8px 0}.distribution-bar__segment-wrapper:only-child .distribution-bar__segment{border-radius:8px}.distribution-bar__legend{gap:16px;margin-top:16px;display:flex}.distribution-bar__legend-item{align-items:center;gap:8px;display:flex}.distribution-bar__legend-color{border-radius:2px;flex-shrink:0;width:28px;height:12px}.distribution-bar__legend-text{color:#4e4e4e;font-family:Lato Regular,sans-serif;font-size:14px;font-weight:500;line-height:1}.distribution-bar__labels{display:none}.distribution-bar--small .distribution-bar__container--with-labels-above{margin-top:26px}.distribution-bar--small .distribution-bar__segments-wrapper,.distribution-bar--small .distribution-bar__segment-wrapper{height:8px}.distribution-bar--small .distribution-bar__label-container{top:-26px}.distribution-bar--small .distribution-bar__segment--first{border-radius:4px 0 0 4px}.distribution-bar--small .distribution-bar__segment--last{border-radius:0 4px 4px 0}.distribution-bar--small .distribution-bar__segment--only{border-radius:4px}.distribution-bar--small .distribution-bar__percentage-value{font-family:var(--font-first);color:#4e4e4e;text-align:right;font-size:14px;font-weight:500;line-height:20px}.empty-state-analytics{text-align:center;padding:var(--spacing-3xl)var(--spacing-xl);flex-direction:column;justify-content:center;align-items:center;min-height:400px;display:flex}.empty-state-analytics__icon{color:var(--color-text-muted);margin-bottom:var(--spacing-lg);font-size:64px}.empty-state-analytics__message{font-size:var(--font-size-xl);font-weight:var(--font-weight-semibold);color:var(--color-text);margin:0 0 var(--spacing-md)0}.empty-state-analytics__description{font-size:var(--font-size-base);color:var(--color-text-secondary);max-width:500px;margin:0}.student-recommendations{border:2px solid var(--color-tangerine-ai,#bc3ebc);background:#fff;border-radius:8px;flex-direction:column;gap:16px;width:100%;padding:16px 24px;display:flex;position:relative}.student-recommendations--loading{justify-content:center;align-items:center;min-height:200px;display:flex}.student-recommendations__loader{color:#4e4e4e;font-size:15px}.student-recommendations__header{justify-content:space-between;align-items:center;gap:16px;display:flex}.student-recommendations__header-left{align-items:center;gap:16px;display:flex}.student-recommendations__avatar{background-image:var(--tangerine-ai-bot-happy);background-position:50%;background-repeat:no-repeat;background-size:cover;flex-shrink:0;justify-content:center;align-items:center;width:60px;height:60px;display:flex}.student-recommendations__header-content{flex:1}.student-recommendations__title{color:#333;font-family:var(--font-first);font-size:22px;font-style:normal;font-weight:500;line-height:32px}.student-recommendations__subtitle{color:#4f4f4f;font-family:var(--font-second);font-size:16px;font-style:normal;font-weight:500;line-height:24px}.student-recommendations__cards{gap:12px;padding-top:8px;padding-bottom:24px;display:flex;overflow-x:auto}.student-recommendations__cards::-webkit-scrollbar{height:6px}.student-recommendations__cards::-webkit-scrollbar-track{background:#f2f2f2;border-radius:3px}.student-recommendations__cards::-webkit-scrollbar-thumb{background:#e0e0e0;border-radius:3px}.student-recommendations__card{cursor:pointer;background:#fff;border:1px solid #e0e0e0;border-radius:16px;flex-direction:column;flex-shrink:0;justify-content:space-between;width:362px;min-height:136px;padding:8px 8px 0;transition:all .1s ease-in;display:flex;position:relative;box-shadow:0 2px #f8f8f8}.student-recommendations__card:hover{border:1px solid #bdbdbd;width:460px;box-shadow:0 2px 3px #ececec}.student-recommendations__card:focus{outline:none}.student-recommendations__card:focus-visible{background-image:linear-gradient(#fff,#fff),linear-gradient(111.12deg,#e14de3 12.58%,#8c2a89 100%);background-origin:border-box;background-clip:padding-box,border-box;border:1px solid transparent;width:460px;box-shadow:0 2px 3px #ececec}.student-recommendations__card:active{background-image:none!important;border:1px solid #bdbdbd!important;box-shadow:inset 0 3px rgba(224,224,224,.7)!important}.student-recommendations__card:hover:focus-visible{width:460px}.student-recommendations__card-body{flex-direction:column;flex:1;display:flex}.student-recommendations__card-header{justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:12px;display:flex}.student-recommendations__card-header--left{flex-direction:row;flex:1;align-items:flex-start;gap:8px;min-width:0;display:flex}.student-recommendations__card-icon{flex-shrink:0;justify-content:center;align-items:center;font-size:24px;display:flex}.student-recommendations__card-icon img{width:100%;max-width:50px}.student-recommendations__card-content{flex:1;min-width:0;overflow:hidden}.student-recommendations__card-title{color:#333;font-family:var(--font-first);width:100%;margin:0;font-size:16px;font-style:normal;font-weight:500;line-height:26px;overflow:hidden}.student-recommendations__card-title .text-html{text-overflow:ellipsis;white-space:nowrap;display:block;overflow:hidden}.student-recommendations__card-subtitle{color:#4e4e4e;font-family:var(--font-second);width:100%;margin:0;font-size:16px;font-style:normal;font-weight:500;line-height:24px}.student-recommendations__card-subtitle .text-html>:first-child{white-space:nowrap;text-overflow:ellipsis;display:block;overflow:hidden}.student-recommendations__card:hover .student-recommendations__card-subtitle .text-html>:first-child{white-space:normal;-webkit-line-clamp:2;line-clamp:2;box-orient:vertical;text-overflow:ellipsis;-webkit-box-orient:vertical;max-height:48px;display:-webkit-box;overflow:hidden}.student-recommendations__card-progress{flex-shrink:0;justify-content:center;align-items:center;display:flex}.student-recommendations__card-check-icon{justify-content:center;align-items:center;width:14px;height:14px;display:flex}.student-recommendations__card-check-icon svg{width:100%;height:100%}.student-recommendations__card-check-icon svg path{fill:#fff!important;stroke:#fff!important}.student-recommendations__card-progress-bar{background-color:#f2f2f2;height:2px;margin:0 -8px;position:relative;overflow:hidden}.student-recommendations__card-progress-bar-fill{background-color:#41d158;height:100%;transition:width .3s}.student-recommendations__card-footer{justify-content:space-between;align-items:center;gap:8px;padding:8px 0;display:flex}.student-recommendations__activities,.student-recommendations__session-status{font-size:16px;font-weight:500;font-family:var(--font-first);background:var(--color-tangerine-ai-gradient,linear-gradient(111deg,#e14de3 12.58%,#8c2a89 100%));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;align-items:center;height:20px;display:inline-flex}@media (max-width:768px){.student-recommendations{padding:16px}.student-recommendations__title{font-size:20px}.student-recommendations__subtitle{font-size:14px}}@media (max-width:480px){.student-recommendations{margin:16px 0}.student-recommendations__header{gap:12px}.student-recommendations__avatar-icon{width:40px;height:40px;font-size:20px}}