@keyframes slideIn{0%{opacity:0;transform:translate(100%)}60%{opacity:1;transform:translate(0)}80%{opacity:1;transform:translate(-15%)}to{opacity:1;transform:translate(0)}}.chatbot-button{cursor:pointer;z-index:100;transition:opacity .5s linear;animation:.6s ease-out forwards slideIn;display:flex;position:fixed;bottom:7em;right:2em}.chatbot-button__image{background-image:var(--tangerine-ai-bot);background-position:50%;background-repeat:no-repeat;background-size:cover;width:100px;height:100px}.chatbot-button:focus{outline:none}.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-icon-button{cursor:pointer;background:0 0;border:none;border-radius:8px;justify-content:center;align-items:center;padding:0;transition:all .2s;display:flex;position:relative}.chat-icon-button--large{width:32px;height:32px}.chat-icon-button--large .icon{width:20px;height:20px}.chat-icon-button--small{width:24px;height:24px}.chat-icon-button--small .icon{width:14px;height:14px}.chat-icon-button--default{color:#767676}.chat-icon-button--error{color:#e04949}.chat-icon-button:hover:not(.chat-icon-button--disabled){color:#333;background-color:#f2f2f2}.chat-icon-button:active:not(.chat-icon-button--disabled){background-color:#f2f2f2;box-shadow:inset 0 3px rgba(224,224,224,.7)}.chat-icon-button:focus-visible{outline:2px solid var(--ui-color-brand-fod-primary-a);outline-offset:2px}.chat-icon-button--disabled{opacity:.5;cursor:not-allowed}.report-modal__content{flex-direction:column;gap:16px;display:flex}.report-modal__subtitle{font-family:var(--font-second);color:#4e4e4e;margin:0;font-size:14px;font-weight:400;line-height:1.5}.report-modal__options{flex-direction:column;gap:16px;display:flex}.report-modal__option{padding:0}.report-modal__comment{flex-direction:column;gap:8px;margin-top:8px;display:flex}.report-modal .dialog__actions .footer-buttons .button{color:#fff;background:var(--color-first)}.report-modal .dialog__actions .footer-buttons .button.button--variant-secondary-ghost{color:var(--color-first);background:0 0}.report-modal .dialog__actions .footer-buttons .button.button--variant-secondary-ghost .button__text{color:var(--color-first)}.report-modal .dialog__actions .footer-buttons .button:disabled{opacity:.4}.report-modal .dialog__title{font-family:var(--font-second);font-size:16px;font-weight:600}.exit-practice-dialog{--exit-practice-dialog-mascot-width:5rem;--exit-practice-dialog-mascot-height:5.875rem}.exit-practice-dialog .footer-buttons .button--variant-secondary-ghost{--button-color:var(--ui-color-brand-fod-primary-a)}.exit-practice-dialog .MuiDialogContent-root{border-top:1px solid var(--ui-color-neutral-grey-200);border-bottom:1px solid var(--ui-color-neutral-grey-200)}.exit-practice-dialog__content{align-items:center;gap:var(--ui-space-xs);display:flex}.exit-practice-dialog__mascot{width:var(--exit-practice-dialog-mascot-width);height:var(--exit-practice-dialog-mascot-height);background-image:var(--tangerine-ai-bot-look-up);background-position:50%;background-repeat:no-repeat;background-size:contain;flex-shrink:0}.exit-practice-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}.tutor-usage-section{flex-direction:column;gap:24px;display:flex}.tutor-usage-section__title{font-family:var(--font-first);color:#333;margin:0;font-size:18px;font-weight:700;line-height:28px}.tutor-usage-section__stats{--tutor-usage-section-stat-min-width:13rem;grid-template-columns:repeat(auto-fit,minmax(var(--tutor-usage-section-stat-min-width),1fr));gap:16px;margin:0;padding:0;list-style:none;display:grid}.tutor-usage-section__stats-item{display:grid}.tutor-usage-section__empty{font-family:var(--font-second);color:#767676;text-align:center;margin:0;padding:24px 0;font-size:14px}.tutor-usage-section__loading{justify-content:center;align-items:center;padding:48px 0;display:flex}.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}.lesson-recommendation-item{align-items:center;gap:16px;padding:0;display:flex}.lesson-recommendation-item__alert{background-color:#fff0f0;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;display:flex}.lesson-recommendation-item__content{flex:1}.lesson-recommendation-item__title{color:#333;font-family:Lato Bold,sans-serif;font-size:16px;font-weight:600;line-height:24px}.teacher-analytics-view__loading{flex-direction:column;justify-content:center;align-items:center;gap:16px;min-height:400px;display:flex}.teacher-analytics-view__loading p{color:#767676;font-size:14px}.teacher-analytics-view__error{text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:24px;min-height:400px;display:flex}.teacher-analytics-view__error p{color:#dc3545;max-width:500px;font-size:14px}.teacher-analytics-view__header-container{justify-content:space-between;align-items:center;margin-bottom:24px;display:flex}.teacher-analytics-view__header-container .teacher-analytics-view__class-selector{min-width:200px;max-width:300px;margin-left:auto}.teacher-analytics-view__subject-selector{min-width:200px;max-width:300px}.teacher-analytics-view__units-grid{flex-direction:column;gap:16px;width:100%;display:flex}.teacher-analytics-view__sections-container{flex-direction:column;gap:16px;display:flex}.teacher-analytics-view__section-separator{border-bottom:1px solid #eee4dc;margin:16px 0}.teacher-analytics-view__recommendations{gap:var(--spacing-lg);flex-direction:column;width:100%;display:flex}.teacher-analytics-view__section{display:block}.teacher-analytics-view__section-title{color:#333;font-size:22px;font-weight:700;font-family:var(--font-first);margin:0 0 24px}.teacher-analytics-view__legend{justify-content:flex-end;gap:24px;margin-top:16px;display:flex}.teacher-analytics-view__legend-item{align-items:center;gap:8px;display:flex}.teacher-analytics-view__legend-color{border-radius:4px;flex-shrink:0;width:16px;height:16px}.teacher-analytics-view__legend-color--mastered{background-color:#0095a2}.teacher-analytics-view__legend-color--in-progress{background-color:#00b4c5}.teacher-analytics-view__legend-color--not-started{background-color:#d4fbff}.teacher-analytics-view__legend-text{font-size:14px;font-weight:500;font-family:var(--font-second);color:#4e4e4e;line-height:1}.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)}.severity-indicator{align-items:flex-end;gap:2px;height:12px;display:flex}.severity-indicator__bar{border-radius:var(--border-radius-01);width:4px}.severity-indicator--high .severity-indicator__bar{background-color:#f76868}.severity-indicator--medium .severity-indicator__bar{background-color:#ffe08c}.severity-indicator--low .severity-indicator__bar{background-color:#97e0c3}.severity-indicator__bar:first-child{height:4px}.severity-indicator__bar:nth-child(2){height:8px}.severity-indicator__bar:nth-child(3){height:12px}.severity-indicator--high .severity-indicator__bar--active{background-color:#f76868}.severity-indicator--medium .severity-indicator__bar--active{background-color:#d18436}.severity-indicator--low .severity-indicator__bar--active{background-color:#135f3e}.teacher-tool-card{cursor:pointer;font-family:var(--font-second);background:#fff;border:1px solid #e0e0e0;border-radius:8px;align-items:flex-start;gap:8px;width:100%;padding:8px;display:flex;position:relative}.teacher-tool-card__icon{flex-shrink:0;justify-content:center;align-items:center;width:24px;height:24px;display:flex}.teacher-tool-card__content{flex-direction:column;flex:1;gap:8px;min-width:0;display:flex}.teacher-tool-card__title{color:#333;white-space:nowrap;text-overflow:ellipsis;margin:0;font-size:16px;font-weight:700;line-height:20px;overflow:hidden}.teacher-tool-card__description{color:#767676;-webkit-line-clamp:2;line-clamp:2;text-overflow:ellipsis;white-space:normal;-webkit-box-orient:vertical;min-height:36px;margin:0;font-size:14px;font-weight:500;line-height:18px;display:-webkit-box;overflow:hidden}.teacher-tool-card:hover:not(.teacher-tool-card--disabled):not(.teacher-tool-card--pressed):not(.teacher-tool-card--active){outline:1px solid #f2f2f2;box-shadow:0 5px 12px rgba(16,16,16,.05)}.teacher-tool-card--pressed{border-color:#ababab}.teacher-tool-card--active{border-color:var(--ui-color-brand-fod-primary-a);background:#fff}.teacher-tool-card--active:hover{border-color:var(--ui-color-brand-fod-primary-a);box-shadow:0 5px 12px rgba(16,16,16,.05)}.teacher-tool-card--disabled{cursor:not-allowed;background:#f9f9f9;border-color:#f2f2f2}.teacher-tool-card--disabled .teacher-tool-card__title,.teacher-tool-card--disabled .teacher-tool-card__description{color:#828282}.teacher-tool-card--disabled .teacher-tool-card__icon{filter:grayscale()}.teacher-tool-card--disabled:hover{box-shadow:none;border-color:#f2f2f2}@media (max-width:768px){.teacher-tool-card{padding:12px}.teacher-tool-card__title{font-size:14px;line-height:18px}.teacher-tool-card__description{min-height:32px;font-size:12px;line-height:16px}}