.chat-dev-tools{background-color:#f2f2f2;border-top:1px solid #e0e0e0;width:100%;font-size:14px;position:relative}.chat-dev-tools__header{cursor:pointer;-webkit-user-select:none;user-select:none;align-items:center;padding:8px 16px;transition:background-color .2s;display:flex}.chat-dev-tools__title{color:#333;flex:none;margin-right:16px;font-weight:600}.chat-dev-tools__toggle{color:#767676;margin-left:auto;font-size:12px}.chat-dev-tools__status{align-items:center;gap:5px;margin-left:16px;display:flex}.chat-dev-tools__status-label{color:#767676;font-size:14px}.chat-dev-tools__status-indicator{border-radius:50%;width:8px;height:8px}.chat-dev-tools__status-text{font-size:14px;font-weight:500}.chat-dev-tools__prompt-indicator{align-items:center;gap:5px;margin-left:16px;display:flex}.chat-dev-tools__prompt-active{color:#28a773;background-color:#ecfaee;border-radius:10px;padding:2px 6px;font-size:14px;font-weight:500}.chat-dev-tools__content{max-height:0;transition:max-height .3s ease-out;overflow:hidden}.chat-dev-tools--expanded .chat-dev-tools__content{border-top:1px solid #e0e0e0;max-height:500px;padding:16px;overflow-y:auto}.chat-dev-tools__section{margin-bottom:16px}.chat-dev-tools__section h3{color:#767676;margin:0 0 8px;font-size:16px;font-weight:600}.chat-dev-tools__code{white-space:pre-wrap;word-break:break-word;color:#333;background-color:#e5e5e5;border:1px solid #e0e0e0;border-radius:4px;max-height:200px;margin:0;padding:12px;font-family:Monaco,Menlo,Ubuntu Mono,monospace;font-size:12px;line-height:1.4;overflow:auto}.chat-dev-tools__textarea{color:#333;resize:vertical;background-color:#e5e5e5;border:1px solid #e0e0e0;border-radius:4px;width:100%;min-height:80px;padding:10px;font-family:Monaco,Menlo,Ubuntu Mono,monospace;font-size:14px;line-height:1.4}.chat-dev-tools__textarea:focus{border-color:var(--ui-color-brand-fod-primary-a);box-shadow:0 0 0 2px var(--ui-color-brand-fod-alpha);outline:none}.chat-dev-tools__textarea::placeholder{color:#ababab}.chat-dev-tools__input-group{flex-direction:column;display:flex;position:relative}.chat-dev-tools__buttons{z-index:1;gap:4px;display:flex;position:absolute;top:8px;right:8px}.chat-dev-tools__clear-button{color:#767676;cursor:pointer;background-color:rgba(0,0,0,.1);border:none;border-radius:50%;justify-content:center;align-items:center;width:20px;height:20px;font-size:18px;line-height:1;display:flex}.chat-dev-tools__clear-button:hover{color:#333;background-color:rgba(0,0,0,.2)}.chat-dev-tools__save-button{background-color:var(--ui-color-brand-fod-primary-a);color:#fff;cursor:pointer;border:none;border-radius:4px;justify-content:center;align-items:center;height:22px;padding:0 8px;font-size:14px;display:flex}.chat-dev-tools__save-button:hover{background-color:var(--ui-color-brand-fod-dark)}.chat-dev-tools__save-button:disabled{cursor:not-allowed;background-color:#ababab}.chat-dev-tools__help-text{color:#767676;margin-top:4px;font-size:12px;line-height:1.3}.chat-dev-tools__help-text small{color:#888;margin-top:2px;display:inline-block}.chat-dev-tools__info-grid{flex-direction:column;gap:8px;margin-bottom:8px;display:flex}.chat-dev-tools__info-item{flex-direction:column;font-size:14px;display:flex}@media (min-width:600px){.chat-dev-tools__info-item{flex-direction:row;align-items:flex-start}}.chat-dev-tools__info-label{color:#555;min-width:110px;margin-right:8px;font-weight:600}@media (min-width:600px){.chat-dev-tools__info-label{flex-shrink:0}}.chat-dev-tools__info-value{word-break:break-all;flex-wrap:wrap;align-items:center;gap:8px;font-family:Monaco,Menlo,Ubuntu Mono,monospace;display:flex}.chat-dev-tools__warning{color:#e65100;background-color:rgba(255,152,0,.1);border-left:3px solid #ff9800;border-radius:4px;padding:4px 8px;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans,Ubuntu,Cantarell,Helvetica Neue,sans-serif;font-size:12px}.chat-dev-tools__copy-button{cursor:pointer;color:#555;background-color:#f0f0f0;border:1px solid #ddd;border-radius:4px;padding:2px 6px;font-size:12px}.chat-dev-tools__copy-button:hover{background-color:#e0e0e0}.chat-dev-tools__notification{color:#fff;z-index:100;background-color:rgba(0,0,0,.7);border-radius:4px;padding:8px 16px;font-size:14px;animation:.3s ease-out forwards slide-up;position:absolute;bottom:0;left:50%;transform:translate(-50%)translateY(100%)}@keyframes slide-up{0%{opacity:0;transform:translate(-50%)translateY(100%)}to{opacity:1;transform:translate(-50%)translateY(-8px)}}.chat-dev-tools__select-wrapper{width:100%;margin-bottom:8px;position:relative}.chat-dev-tools__select-wrapper:after{content:"▼";pointer-events:none;color:#666;font-size:12px;position:absolute;top:50%;right:10px;transform:translateY(-50%)}.chat-dev-tools__select{-webkit-appearance:none;appearance:none;cursor:pointer;background-color:#fff;border:1px solid #ddd;border-radius:4px;width:100%;padding:8px 12px;font-size:14px}.chat-dev-tools__select:focus{border-color:#07f;outline:none;box-shadow:0 0 0 2px rgba(0,119,255,.1)}.chat-dev-tools__select optgroup{padding:4px 0;font-style:normal;font-weight:700}.chat-dev-tools__select option{padding:4px 0}.chat-dev-tools__slider-container{margin:12px 0}.chat-dev-tools__slider-label{color:#767676;flex-direction:column;gap:4px;font-size:14px;font-weight:600;display:flex}.chat-dev-tools__slider{-webkit-appearance:none;background:#e0e0e0;border-radius:3px;outline:none;width:100%;height:6px}.chat-dev-tools__slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;background:var(--ui-color-brand-fod-primary-a);cursor:pointer;border-radius:50%;width:18px;height:18px}.chat-dev-tools__slider::-moz-range-thumb{background:var(--ui-color-brand-fod-primary-a);cursor:pointer;border:none;border-radius:50%;width:18px;height:18px}.chat-dev-tools__input-label{color:#767676;align-items:center;gap:8px;width:100%;margin-bottom:8px;font-size:14px;font-weight:600;display:flex}.chat-dev-tools__number-input{color:#333;background-color:#e5e5e5;border:1px solid #e0e0e0;border-radius:4px;width:100px;padding:6px 8px;font-size:14px}.chat-dev-tools__number-input:focus{border-color:var(--ui-color-brand-fod-primary-a);box-shadow:0 0 0 2px var(--ui-color-brand-fod-alpha);outline:none}.chat-dev-tools__activity-input-wrapper{flex:1;align-items:center;gap:8px;width:100%;display:flex}.chat-dev-tools__activity-combobox{flex:1;min-width:0}.chat-dev-tools__activity-combobox .activity-combobox__input{color:#333;background-color:#e5e5e5;border:1px solid #e0e0e0;border-radius:4px;width:100%;padding:8px 32px 8px 12px;font-size:14px;line-height:1.4}.chat-dev-tools__activity-combobox .activity-combobox__input:focus{border-color:var(--ui-color-brand-fod-primary-a);box-shadow:0 0 0 2px var(--ui-color-brand-fod-alpha);outline:none}.chat-dev-tools__activity-combobox .activity-combobox__input::placeholder{color:#ababab}.chat-dev-tools__activity-combobox .activity-combobox__toggle{color:#767676}.chat-dev-tools__activity-combobox .activity-combobox__toggle:hover{color:#333}.chat-dev-tools__activity-combobox .activity-combobox__toggle:focus{color:var(--ui-color-brand-fod-primary-a)}.chat-dev-tools__activity-combobox .activity-combobox__dropdown{background:#e5e5e5;border:1px solid #e0e0e0;box-shadow:0 2px 8px rgba(0,0,0,.1)}.chat-dev-tools__activity-combobox .activity-combobox__option{color:#333;border-bottom-color:#e0e0e0}.chat-dev-tools__activity-combobox .activity-combobox__option:hover,.chat-dev-tools__activity-combobox .activity-combobox__option--highlighted{background-color:rgba(0,123,255,.1)}.chat-dev-tools__activity-combobox .activity-combobox__option[aria-selected=true]{background-color:var(--ui-color-brand-fod-primary-a);color:#fff}.chat-dev-tools__activity-combobox .activity-combobox__no-options{color:#767676}.chat-dev-tools__refresh-button{background-color:var(--ui-color-brand-fod-primary-a);color:#fff;cursor:pointer;border:none;border-radius:4px;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-size:16px;font-weight:700;transition:background-color .2s;display:flex}.chat-dev-tools__refresh-button:hover{background-color:var(--ui-color-brand-fod-dark)}.chat-dev-tools__refresh-button:disabled{cursor:not-allowed;background-color:#ababab}.chat-dev-tools__refresh-button:focus{box-shadow:0 0 0 2px var(--ui-color-brand-fod-alpha);outline:none}.chat-dev-tools__update-button{background-color:var(--ui-color-brand-fod-primary-a);color:#fff;cursor:pointer;border:none;border-radius:4px;justify-content:center;align-items:center;height:32px;margin-top:8px;padding:0 16px;font-size:14px;font-weight:500;transition:background-color .2s;display:flex}.chat-dev-tools__update-button:hover{background-color:var(--ui-color-brand-fod-dark)}.chat-dev-tools__update-button:disabled{cursor:not-allowed;background-color:#ababab}.chat-dev-tools__update-button:focus{box-shadow:0 0 0 2px var(--ui-color-brand-fod-alpha);outline:none}.chat-dev-tools__regenerate-button{background-color:var(--ui-color-brand-fod-primary-a);color:#fff;cursor:pointer;border:none;border-radius:4px;justify-content:center;align-items:center;width:100%;height:36px;padding:0 16px;font-size:14px;font-weight:500;transition:background-color .2s;display:flex}.chat-dev-tools__regenerate-button:hover:not(:disabled){background-color:var(--ui-color-brand-fod-dark)}.chat-dev-tools__regenerate-button:disabled{cursor:not-allowed;opacity:.7;background-color:#ababab}.chat-dev-tools__regenerate-button:focus{box-shadow:0 0 0 2px var(--ui-color-brand-fod-alpha);outline:none}.chat-dev-tools__error-text{color:#e04949;background-color:rgba(246,104,104,.1);border:1px solid rgba(246,104,104,.3);border-radius:4px;margin-top:8px;padding:8px 12px;font-size:12px;line-height:1.4}.typing-indicator{justify-content:center;align-items:center;gap:7px;margin-top:0;display:flex}.typing-indicator--inline{background-color:transparent;border:none;justify-content:flex-start;width:auto;margin-top:8px;padding:8px 0 0}.typing-indicator span{border-radius:50%;width:8px;height:8px;animation:1.4s ease-in-out infinite typing-pulse;display:inline-block}.typing-indicator span:first-child{background-color:var(--ui-color-brand-fod-primary-a);animation-delay:0s}.typing-indicator span:nth-child(2){background-color:var(--ui-color-brand-fod-dark);animation-delay:.2s}.typing-indicator span:nth-child(3){background-color:var(--ui-color-brand-fod-light);animation-delay:.4s}@keyframes typing-pulse{0%,to{opacity:.6;transform:scale(1)}50%{opacity:1;transform:scale(1.6)}}.tutor-ai-tabs{align-items:center;gap:8px;display:flex}.tutor-ai-tabs__tab{font-size:14px;font-family:var(--font-second);color:#333;cursor:pointer;border-radius:var(--border-radius-01);padding:8px;line-height:20px;transition:color .2s;position:relative}.tutor-ai-tabs__tab--active{font-family:var(--font-second-bold);color:#333;cursor:default;background-color:#f9f9f9;font-size:14px;line-height:20px}.drawer-overlay{z-index:8000;opacity:0;visibility:hidden;background-color:rgba(16,16,16,.15);transition:opacity .3s,visibility .3s;position:fixed;top:0;bottom:0;left:0;right:0}.drawer-overlay--open{opacity:1;visibility:visible}.drawer{z-index:8001;visibility:hidden;background-color:#fff;flex-direction:column;height:100vh;transition:transform .3s,visibility .3s;display:flex;position:fixed;top:0;transform:translate(100%);box-shadow:0 5px 20px rgba(169,155,144,.2)}.drawer--right{right:0}.drawer--left{left:0;transform:translate(-100%)}.drawer--open{visibility:visible;transform:translate(0)}.drawer__header{border-bottom:1px solid #e0e0e0;flex-shrink:0}.drawer__content{flex:1;overflow-y:auto}.drawer__footer{border-top:1px solid #e0e0e0;flex-shrink:0}.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}.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}