.chat-header-container{background-color:#fff}.chat-header{--chat-header-height:64px;--chat-header-padding:var(--ui-space-xs);--chat-header-divider-height:30px;height:var(--chat-header-height);padding:0 var(--chat-header-padding);border-bottom:var(--ui-stroke-1)solid var(--ui-color-neutral-grey-200);background-color:#fff;justify-content:space-between;align-items:center;display:flex;position:relative}.chat-header__left,.chat-header__right{align-items:center;gap:var(--ui-space-xs);flex:none;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__close-button.chat-button--icon-only.chat-button--small{padding:var(--ui-space-xxxs)var(--ui-space-xs)}.chat-header__divider{width:var(--ui-stroke-1);height:var(--chat-header-divider-height);background-color:var(--ui-color-neutral-grey-200)}.chat-content-references{background-color:#f9f9f9;border-top:1px solid #e0e0e0;border-radius:0 0 8px;padding:8px}.chat-content-references__title{color:#767676;font-size:14px;font-weight:600;line-height:30px;font-family:var(--font-second)}.chat-content-references__label{color:#767676;margin-right:8px;font-size:16px;font-weight:600}.chat-content-references__button{color:var(--ui-color-brand-fod-primary-a);cursor:pointer;background:0 0;border:none;padding:0;font-size:14px;text-decoration:underline}.chat-content-references__button:hover{color:var(--ui-color-brand-fod-dark)}.chat-content-references__header{justify-content:space-between;align-items:center;gap:8px;width:100%;display:flex}.chat-content-references__list{flex-direction:column;gap:8px;transition:all .2s;display:flex}.chat-content-references__list--hidden{display:none}.chat-content-references__item{color:var(--ui-color-brand-fod-primary-a);flex-direction:column;gap:2px;max-width:212px;font-size:16px;text-decoration:none;transition:background-color .2s;display:flex}.chat-content-references__item:hover{text-decoration:underline}.chat-content-references__item:active{color:var(--ui-color-brand-fod-dark)}.chat-content-references__item span p{margin:0;display:inline}.chat-content-references__item-title{color:var(--ui-color-brand-fod-primary-a);font-weight:600;display:block}.chat-content-references__section{margin-bottom:12px}.chat-content-references__section:last-child{margin-bottom:0}.chat-content-references__section-header{align-items:center;gap:8px;margin-bottom:8px;display:flex}.chat-content-references__section-icon{align-items:center;font-size:16px;display:flex}.chat-content-references__section-title{font-size:12px;font-weight:600;font-family:var(--font-second);color:#4e4e4e}.chat-content-references__section-links{flex-direction:column;gap:8px;display:flex}.chat-content-references__separator{background-color:#e0e0e0;width:100%;height:1px}.chat-content-references__link{font-size:14px;font-family:var(--font-second);word-break:break-word;line-height:1.4;display:block}.chat-content-references__link-text{display:inline}.chat-content-references__link-text p{margin:0;display:inline}.chat-content-references__link-text-course-title{font-weight:600}.chat-content-references__snippet{color:#333;margin-bottom:4px;font-size:14px;font-style:italic;line-height:1.4;display:block}.chat-content-references__domain{color:#333;font-size:12px;display:block}.chat-content-references--expanded{flex-direction:column;gap:8px;display:flex}.chat-content-references--expanded .chat-content-references__header{border-bottom:1px solid #e0e0e0;padding-bottom:0}@media screen and (max-width:768px){.chat-content-references{margin-top:12px;padding:10px 12px}.chat-content-references__item{padding:3px 10px;font-size:11px}}.chat-d3-modal .dialog__content{padding:0;overflow:hidden}.chat-d3-modal__content{background-color:#f2f2f2;width:100%;height:80vh;position:relative}.chat-d3-modal__iframe{background-color:#fff;border:none;width:100%;height:100%}.tool-indicator{border:1px solid var(--ui-color-brand-fod-primary-a);background-color:#fff;border-radius:8px;align-items:center;margin:8px 0;padding:8px 12px;animation:.3s ease-in-out fadeIn;display:flex}.tool-indicator--error{color:#e04949;background:#fef0ef;border-color:#e04949}.tool-indicator__icon{color:var(--ui-color-brand-fod-primary-a);flex-shrink:0;margin-right:12px}.tool-indicator__icon .icon{color:var(--ui-color-brand-fod-primary-a)}.tool-indicator__content{flex:1;justify-content:space-between;align-items:center;gap:12px;display:flex}.tool-indicator__message{font-family:var(--font-second);color:#333;font-size:16px;font-weight:500;line-height:1.4}@keyframes fadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.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{--ai-revision-loading-bot-width:7.5rem;--ai-revision-loading-bot-height:8.75rem;width:var(--ai-revision-loading-bot-width);height:var(--ai-revision-loading-bot-height);background-image:var(--tangerine-ai-bot-search);background-position:50%;background-repeat:no-repeat;background-size:contain;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}}.practice-mascot-dialog{--practice-mascot-dialog-mascot-width:5rem;--practice-mascot-dialog-mascot-height:5.875rem;--practice-mascot-dialog-mascot-image:none}.practice-mascot-dialog--look-up{--practice-mascot-dialog-mascot-image:var(--tangerine-ai-bot-look-up)}.practice-mascot-dialog--disconnected{--practice-mascot-dialog-mascot-image:var(--tangerine-ai-bot-disconnected)}.practice-mascot-dialog .MuiDialogContent-root{border-top:1px solid var(--ui-color-neutral-grey-200);border-bottom:1px solid var(--ui-color-neutral-grey-200)}.practice-mascot-dialog__content{align-items:center;gap:var(--ui-space-xs);display:flex}.practice-mascot-dialog__mascot{width:var(--practice-mascot-dialog-mascot-width);height:var(--practice-mascot-dialog-mascot-height);background-image:var(--practice-mascot-dialog-mascot-image);background-position:50%;background-repeat:no-repeat;background-size:contain;flex-shrink:0}.practice-mascot-dialog__body{font-family:var(--ui-font-family-body);font-size:var(--ui-font-size-16);font-weight:var(--ui-font-weight-medium);line-height:var(--ui-line-height-24);color:var(--ui-color-neutral-grey-900);flex:1;min-width:0;margin:0}.sidebar-feedback{--sidebar-feedback-gap:var(--ui-space-xs);gap:var(--sidebar-feedback-gap);flex-direction:column;display:flex}.sidebar-feedback__prompt{font-family:var(--ui-font-family-body);font-size:var(--ui-font-size-12);font-weight:var(--ui-font-weight-regular);line-height:var(--ui-line-height-18);color:var(--ui-color-text-secondary);margin:0}.sidebar-feedback--collapsed{align-items:center}.teacher-page-header{--teacher-page-header-min-height:4rem;--teacher-page-header-robot-width:var(--ui-size-6xl);--teacher-page-header-robot-height:3.5rem;--teacher-page-header-chip-max-width:12.5rem;--teacher-page-header-block-basis:12rem;--teacher-page-header-gap-below:var(--ui-space-xxs);align-items:center;gap:var(--ui-space-lg);box-sizing:border-box;min-height:var(--teacher-page-header-min-height);margin-bottom:var(--teacher-page-header-gap-below);padding:var(--ui-space-xxs)var(--ui-space-xl);background-color:var(--ui-color-bg-container-primary);flex-wrap:wrap;width:100%;display:flex}.teacher-page-header--illustrated{--teacher-page-header-min-height:7rem}.teacher-page-header--breadcrumbs{--teacher-page-header-min-height:2.25rem}.teacher-page-header__block{flex:1 1 var(--teacher-page-header-block-basis);flex-direction:column;min-width:0;display:flex}.teacher-page-header__title{font-family:var(--ui-font-family-heading);font-size:var(--ui-font-size-22);font-weight:var(--ui-font-weight-bold);line-height:var(--ui-line-height-32);color:var(--ui-color-neutral-grey-900);margin:0}.teacher-page-header__subtitle{font-family:var(--ui-font-family-body);font-size:var(--ui-font-size-16);font-weight:var(--ui-font-weight-medium);line-height:var(--ui-line-height-24);color:var(--ui-color-text-default);margin:0}.teacher-page-header__robot-row{align-items:flex-start;gap:var(--ui-space-md);margin-top:var(--ui-space-md);display:flex}.teacher-page-header__robot{width:var(--teacher-page-header-robot-width);height:var(--teacher-page-header-robot-height);background:var(--teacher-page-header-robot-image)center/contain no-repeat;flex:none}.teacher-page-header__robot--help{--teacher-page-header-robot-image:var(--tangerine-ai-bot-help)}.teacher-page-header__robot--search{--teacher-page-header-robot-image:var(--tangerine-ai-bot-search)}.teacher-page-header__description{margin:var(--ui-space-md)0 0;font-family:var(--ui-font-family-body);font-size:var(--ui-font-size-16);font-weight:var(--ui-font-weight-medium);line-height:var(--ui-line-height-24);color:var(--ui-color-text-default)}.teacher-page-header__back{display:flex}.teacher-page-header__student{align-items:center;gap:var(--ui-space-xs);max-width:var(--teacher-page-header-chip-max-width);padding:var(--ui-space-xxxs)var(--ui-space-xs);border-radius:var(--ui-radius-xl);display:flex}.teacher-page-header__student-name{font-family:var(--ui-font-family-body);font-size:var(--ui-font-size-14);font-weight:var(--ui-font-weight-medium);line-height:var(--ui-line-height-20);color:var(--ui-color-neutral-grey-900);white-space:nowrap;text-overflow:ellipsis;margin:0;overflow:hidden}.teacher-page-header__actions{align-items:center;gap:var(--ui-space-md);display:flex}.teacher-page-header .teacher-page-header__breadcrumbs{--ui-breadcrumbs-color-text:var(--ui-color-text-default);--ui-breadcrumbs-color-current:var(--ui-color-neutral-grey-900);--ui-breadcrumbs-color-separator:var(--ui-color-neutral-grey-300);--ui-breadcrumbs-line-height:var(--ui-line-height-28);overflow-wrap:anywhere}.teacher-page-header__back .button{--button-font-family:var(--ui-font-family-heading);--button-font-size:var(--ui-font-size-16);--button-font-weight:var(--ui-font-weight-bold);--button-line-height:var(--ui-line-height-26);--button-icon-size:var(--ui-icon-size-sm);--button-gap:var(--ui-space-xs);--button-padding-y:var(--ui-space-xxxs);--button-padding-x:var(--ui-space-md)}.tutor-usage-stat-card{gap:var(--ui-space-xs);padding:var(--ui-space-xs)var(--ui-space-md);border:var(--ui-stroke-1)solid var(--ui-color-stroke-primary);border-radius:var(--ui-radius-xl);background-color:var(--ui-color-bg-container-primary);flex-direction:column;display:flex}.tutor-usage-stat-card__header{justify-content:space-between;align-items:center;display:flex}.tutor-usage-stat-card__icon{width:var(--ui-size-5xl);height:var(--ui-size-5xl);border-radius:var(--ui-radius-xl);justify-content:center;align-items:center;display:flex}.tutor-usage-stat-card__icon--purple{background-color:var(--ui-color-purple-100)}.tutor-usage-stat-card__icon--purple .icon--color-default{color:var(--ui-color-purple-500)}.tutor-usage-stat-card__icon--blue{background-color:var(--ui-color-blue-100)}.tutor-usage-stat-card__icon--blue .icon--color-default{color:var(--ui-color-blue-500)}.tutor-usage-stat-card__icon--orange{background-color:var(--ui-color-orange-100)}.tutor-usage-stat-card__icon--orange .icon--color-default{color:var(--ui-color-orange-500)}.tutor-usage-stat-card__icon--green{background-color:var(--ui-color-green-100)}.tutor-usage-stat-card__icon--green .icon--color-default{color:var(--ui-color-green-500)}.tutor-usage-stat-card__info-icon{cursor:help;opacity:.5;align-items:center;display:flex}.tutor-usage-stat-card__info-icon:hover{opacity:.8}.tutor-usage-stat-card__label{font-family:var(--ui-font-family-body);font-size:var(--ui-font-size-14);font-weight:var(--ui-font-weight-medium);line-height:var(--ui-line-height-20);color:var(--ui-color-text-secondary);margin:0;margin-top:var(--ui-space-xs)}.tutor-usage-stat-card__value{font-family:var(--ui-font-family-body);font-size:var(--ui-font-size-18);font-weight:var(--ui-font-weight-bold);line-height:var(--ui-line-height-26);color:var(--ui-color-text-default);margin:0}.tutor-usage-stat-card__subtitle{font-family:var(--ui-font-family-body);font-size:var(--ui-font-size-14);font-weight:var(--ui-font-weight-medium);line-height:var(--ui-line-height-20);color:var(--ui-color-text-tertiary);margin:0}.tutor-usage-stat-card__trend{align-items:center;gap:var(--ui-space-xxs);font-family:var(--ui-font-family-body);font-size:var(--ui-font-size-12);font-weight:var(--ui-font-weight-semibold);line-height:var(--ui-line-height-18);margin:0;margin-top:var(--ui-space-xs);display:flex}.tutor-usage-stat-card__trend .icon__wrapper{margin-right:var(--ui-space-xs)}.tutor-usage-stat-card__trend .icon__wrapper svg{width:var(--ui-size-xxl);height:var(--ui-size-xxl)}.tutor-usage-stat-card__trend--positive,.tutor-usage-stat-card__trend--positive .icon--color-success,.tutor-usage-stat-card__trend--positive .tutor-usage-stat-card__trend-text{color:var(--ui-color-green-600)}.tutor-usage-stat-card__trend--negative,.tutor-usage-stat-card__trend--negative .icon--color-red,.tutor-usage-stat-card__trend--negative .tutor-usage-stat-card__trend-text{color:var(--ui-color-red-600)}.tutor-usage-stat-card__trend--neutral,.tutor-usage-stat-card__trend--neutral .tutor-usage-stat-card__trend-text{color:var(--ui-color-text-tertiary)}.tutor-usage-stat-card__trend-text{font-family:var(--ui-font-family-body);font-size:var(--ui-font-size-12);font-weight:var(--ui-font-weight-semibold);color:var(--ui-color-text-tertiary);margin-left:var(--ui-space-xxs)}.tutor-usage-stat-card__trend-text--na{margin-left:0}.stat-card{--stat-card-icon-size:36px;--stat-card-toggle-size:24px;border:1px solid #e0e0e0;border-radius:8px;align-items:center;gap:8px;padding:8px 16px;display:flex}.stat-card--expandable{flex-direction:column;align-items:stretch}.stat-card__row{align-items:center;gap:16px;width:100%;display:flex}.stat-card__row--clickable{font:inherit;color:inherit;text-align:left;cursor:pointer;background:0 0;border:none;border-radius:8px;margin:0;padding:0}.stat-card__row--clickable:hover .stat-card__toggle{color:#333}.stat-card__row--clickable:focus-visible{outline:2px solid var(--color-first);outline-offset:2px}.stat-card__icon{width:var(--stat-card-icon-size);height:var(--stat-card-icon-size);border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;display:flex}.stat-card__icon--success{color:#28a773;background-color:#e6fbfc}.stat-card__icon--success .icon--color-default{color:#02788a}.stat-card__icon--rollback{color:#e04949;background-color:#ffeaed}.stat-card__icon--rollback .icon--color-default{color:#97033a}.stat-card__icon--timeline{color:#8e0d8e;background-color:#fff1ff}.stat-card__icon--timeline .icon--color-default{color:#8e0d8e}.stat-card__icon--time{color:#0a6910;background-color:#d7fedb}.stat-card__icon--time .icon--color-default{color:#0a6910}.stat-card__icon--group{background-color:#fffad6}.stat-card__icon--group .icon--color-default{color:#996008}.stat-card__icon--mastery{color:#8e0d8e;background-color:#fff1ff}.stat-card__icon--mastery .icon--color-default{color:#8e0d8e}.stat-card__description{font-family:var(--font-second);color:#4e4e4e;background-color:#f9f9f9;border-radius:8px;margin:0;padding:8px;font-size:14px;line-height:20px}.stat-card__info{flex:1;gap:8px;min-width:0;display:flex}.stat-card--layout-inline .stat-card__info{flex-direction:row-reverse;justify-content:flex-end;align-items:baseline}.stat-card--layout-spread{gap:0}.stat-card--layout-spread .stat-card__info{flex-direction:row;justify-content:space-between}.stat-card--layout-stacked .stat-card__info{flex-direction:column;align-items:flex-start;gap:2px}.stat-card__value{font-family:var(--font-second);color:#333;flex-shrink:0;font-weight:700}.stat-card--layout-inline .stat-card__value,.stat-card--layout-spread .stat-card__value{font-size:18px;line-height:26px}.stat-card__label{font-family:var(--font-second);color:#4e4e4e;font-size:14px;line-height:20px}.stat-card__toggle{width:var(--stat-card-toggle-size);height:var(--stat-card-toggle-size);cursor:pointer;color:#767676;background:0 0;border:none;flex-shrink:0;justify-content:center;align-items:center;padding:0;transition:transform .4s;display:flex}.stat-card__toggle svg{width:var(--stat-card-toggle-size);height:var(--stat-card-toggle-size)}.stat-card__toggle--expanded{transform:rotate(180deg)}.vertical-kc-timeline{--timeline-marker-width:16px;--timeline-dot-size:12px;--timeline-line-width:1px;background-color:#f9f9f9;border-radius:8px;flex-direction:column;gap:16px;margin:0;padding:8px;list-style:none;display:flex}.vertical-kc-timeline__item{grid-template-columns:auto var(--timeline-marker-width)1fr;min-height:var(--timeline-dot-size);align-items:center;gap:8px;display:grid;position:relative}.vertical-kc-timeline__date{text-align:right;font-family:var(--font-second);color:#4e4e4e;flex-direction:column;align-items:flex-end;min-width:111px;font-size:12px;line-height:18px;display:flex}.vertical-kc-timeline__item--last .vertical-kc-timeline__date{font-family:var(--font-second-bold)}.vertical-kc-timeline__marker{width:var(--timeline-marker-width);justify-content:center;align-self:stretch;align-items:center;height:100%;display:flex;position:relative}.vertical-kc-timeline__marker:after{content:"";width:var(--timeline-line-width);background-color:#8e0d8e;height:50%;position:absolute;top:50%;left:50%;transform:translate(-50%)}.vertical-kc-timeline__item:not(.vertical-kc-timeline__item--last) .vertical-kc-timeline__marker:after{height:calc(100% + 16px)}.vertical-kc-timeline__item:first-child .vertical-kc-timeline__marker:before{content:"";width:var(--timeline-line-width);background-color:#8e0d8e;height:50%;position:absolute;top:0;left:50%;transform:translate(-50%)}.vertical-kc-timeline__dot{width:var(--timeline-dot-size);height:var(--timeline-dot-size);z-index:1;background-color:#e875e6;border-radius:50%}.vertical-kc-timeline__item--last .vertical-kc-timeline__dot{background-color:#b00fb0;box-shadow:0 0 0 3px rgba(209,22,218,.15)}.vertical-kc-timeline__status-label{font-family:var(--font-second);color:#333;font-size:16px;line-height:24px}.vertical-kc-timeline__item--last .vertical-kc-timeline__status-label{font-family:var(--font-second-bold)}.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}