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50%/100% 100% no-repeat}.page-container--unwrapped{flex:1 1 0;width:100%;max-width:none;min-height:0;padding:0;overflow:hidden}.page-container--unwrapped>.page-block--workspace{flex:1 1 0;width:100%;min-height:0;overflow:hidden}.page-container--unwrapped .chatroom-page{flex:1 1 0;width:100%;height:100%;min-height:0;overflow:hidden}@media (width<=850px){.navbar{min-height:4rem}.navbar-container{min-height:4rem;padding:0 var(--space-4)}}.navbar{z-index:100;border-bottom:1px solid var(--color-border);background:var(--color-surface);min-height:6rem;position:relative;overflow:visible}.navbar-container{width:100%;min-height:6rem;padding:0 var(--space-6);align-items:center;display:flex;position:relative}.navbar-brand{color:var(--color-blue);transition:color var(--transition-fast), box-shadow var(--transition-fast);font-size:1.75rem;font-weight:700;text-decoration:none}.navbar-actions{right:var(--space-6);bottom:var(--space-2);align-items:center;display:flex;position:absolute}.navbar-ribbon{align-items:stretch;gap:var(--space-2);min-height:2.75rem;display:inline-flex}.navbar-home{justify-content:center;align-items:center;gap:var(--space-2);min-height:2.75rem;padding:0 var(--space-4);border:var(--border-width-thin) solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-white-soft);box-shadow:var(--shadow-button-resting);color:var(--color-blue-dark);transition:background var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);text-decoration:none;display:inline-flex}.navbar-home:hover{border-color:var(--color-border-strong);background:var(--color-surface-hover);color:var(--color-blue);box-shadow:var(--shadow-button-hover)}.navbar-home:focus-visible{z-index:1;box-shadow:var(--focus-ring);outline:none;position:relative}.navbar-home__label{font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);white-space:nowrap}.navbar-ribbon__icon{flex:none;width:1.15rem;height:1.15rem}.page-block{width:100%}.page-block--centered{flex-direction:column;flex:1;justify-content:center;display:flex}.page-block--content-centered{flex-direction:column;flex:1;justify-content:center;display:flex;transform:translateY(-2.5rem)}.page-block--workspace{flex-direction:column;flex:1;display:flex}.page-block--workspace>.content-box{flex:1}.page-header{margin-bottom:var(--space-10)}.page-header-title{color:var(--color-blue);font-size:2rem}.content-box{width:100%;min-height:60vh;padding:var(--space-6);border:var(--border-width-thin) solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-surface);box-shadow:var(--shadow-surface)}.content-box--compact{min-height:auto}.content-box--medium{min-height:18rem}.content-box--large{--content-box-large-height:clamp(42rem, calc(100vh - 12rem), 58rem);min-height:var(--content-box-large-height)}.page-block--workspace>.content-box--large.content-box--height-bounded{flex:0 0 var(--content-box-large-height);height:var(--content-box-large-height);min-height:var(--content-box-large-height);max-height:var(--content-box-large-height);overflow:hidden}.content-box--centered{justify-content:center;align-items:center;display:flex}.content-box--stretch{width:100%}.content-box--layout-fill{flex-direction:column;min-height:0;display:flex}.content-box--layout-stack{flex-direction:column;display:flex}.content-box--layout-stack-center{flex-direction:column;justify-content:center;align-items:center;display:flex}.content-box--layout-center{justify-content:center;align-items:center;display:flex}.footer{border-top:1px solid var(--color-border);background:var(--color-blue);color:var(--color-white);margin-top:auto}.footer-container{width:100%;min-height:6rem;padding:var(--space-4) var(--space-6);justify-content:flex-end;align-items:flex-end;margin:0;display:flex}.footer-text{font-size:.875rem}.page-shell__alert{width:100%;padding:var(--space-3) var(--space-6)}@media (width<=850px){.navbar{min-height:auto}.navbar-container{min-height:auto;padding:var(--space-3) var(--space-4);align-items:center;gap:var(--space-2);flex-wrap:wrap;display:flex}.navbar-brand{flex:1 0 100%;min-width:0}.navbar-actions{flex:100%;width:100%;display:flex;position:static}.navbar-ribbon{gap:var(--space-2);width:100%;min-height:2.5rem;display:flex}.navbar-home,.navbar-ribbon>*{flex:1 1 0;min-width:0}.navbar-home{min-height:2.5rem;padding:0 var(--space-3)}}.form{gap:var(--space-4);flex-direction:column;width:100%;display:flex}.form--compact{gap:var(--space-3)}.form--comfortable{gap:var(--space-6)}.form-field{gap:var(--space-2);flex-direction:column;display:flex}.form-field--inline{flex-direction:row;align-items:center}.form-label{color:var(--color-text);font-size:1.2rem;font-weight:600}.form-control{width:100%;padding:var(--space-3) var(--space-4);border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);color:var(--color-text)}input.form-control--compact{height:2rem;padding:0 var(--space-3);font-size:var(--font-size-sm);line-height:normal}.form-control:focus{outline:2px solid var(--color-blue);outline-offset:2px;border-color:var(--color-blue)}.form-control:disabled{cursor:not-allowed;opacity:.65}.form-field__meta{justify-content:space-between;align-items:baseline;gap:var(--space-3);display:flex}.form-character-count{color:var(--color-black);font-size:var(--font-size-xs);font-weight:var(--font-weight-regular);line-height:var(--line-height-normal);white-space:nowrap;flex:none;margin:0}.form-character-count--error{color:var(--color-error)}input.form-control[readonly],textarea.form-control[readonly]{cursor:not-allowed;background:var(--color-surface-active)}textarea.form-control{resize:vertical;min-height:8rem}textarea.form-control--compact{min-height:5rem}select.form-control{cursor:pointer}.form-help{font-size:var(--font-size-sm);color:var(--color-text-muted);margin:0}.form-message--center{text-align:center}.form-message--right{text-align:right}.form-error{font-size:var(--font-size-xs);color:var(--color-error)}.form-actions{align-items:center;gap:var(--space-3);margin-top:var(--space-2);display:flex}.form-actions--right{justify-content:flex-end}.form-actions--between{justify-content:space-between}.password-control{width:100%;position:relative}.password-control-input{padding-right:3.5rem}.password-toggle{top:50%;right:var(--space-3);border-radius:var(--radius-sm);width:2rem;height:2rem;color:var(--color-blue);background:0 0;border:0;justify-content:center;align-items:center;padding:0;display:inline-flex;position:absolute;transform:translateY(-50%)}.password-toggle-icon{width:1.15rem;height:1.15rem}.password-toggle:hover{background:var(--color-surface-active)}.password-toggle:focus-visible{outline:2px solid var(--color-blue);outline-offset:2px}.password-toggle:disabled{cursor:not-allowed;opacity:.65}.form-control::placeholder{color:var(--color-text-subtle);opacity:1}.file-field__input{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.file-field{width:100%;min-width:0;padding:var(--space-3) var(--space-4);border:var(--border-width-thin) solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface)}.file-field--disabled{opacity:.65}.file-field__empty{justify-content:space-between;align-items:center;gap:var(--space-4);width:100%;min-width:0;display:flex}.file-field__prompt{min-width:0;color:var(--color-text-muted);font-size:var(--font-size-sm);line-height:var(--line-height-normal);overflow-wrap:anywhere}.file-field__selected{justify-content:space-between;align-items:center;gap:var(--space-3);width:100%;min-width:0;display:flex}.file-field__file-name{align-items:center;gap:var(--space-2);min-width:0;color:var(--color-text);font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);overflow-wrap:anywhere;display:flex}.file-field__check{color:var(--color-success);font-weight:var(--font-weight-bold);flex:none}.file-field__remove{width:var(--control-height-md);height:var(--control-height-md);border:var(--border-width-thin) solid transparent;border-radius:var(--radius-sm);color:var(--color-text-muted);font-size:1.25rem;font-weight:var(--font-weight-bold);background:0 0;flex:none;justify-content:center;align-items:center;padding:0;line-height:1;display:inline-flex}.file-field__remove:not(:disabled){cursor:pointer}.file-field__remove:not(:disabled):hover{border-color:var(--color-border);background:var(--color-surface-hover);color:var(--color-error)}.file-field__remove:focus-visible{box-shadow:var(--focus-ring);outline:none}.file-field__remove:disabled{cursor:not-allowed;opacity:.5}@media (width<=36rem){.file-field__empty{flex-direction:column;align-items:stretch}.file-field__empty .button{width:100%}}.button{min-height:2.75rem;padding:0 var(--space-5);border:var(--border-width-thin) solid transparent;border-radius:var(--radius-lg);box-shadow:var(--shadow-button-resting);font-weight:var(--font-weight-semibold);text-align:center;transition:background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-fast), transform var(--transition-fast);justify-content:center;align-items:center;display:inline-flex}.button:not(:disabled){cursor:pointer}.button:not(:disabled):active{box-shadow:var(--shadow-button-active);transform:translateY(1px)}.button--primary{border-color:var(--color-blue-dark);background:var(--color-blue);color:var(--color-white)}.button--primary:not(:disabled):hover{background:var(--color-blue-hover);box-shadow:var(--shadow-button-hover)}.button--primary:not(:disabled):active{background:var(--color-blue-active)}.button--secondary{border-color:var(--color-border-strong);background:var(--color-surface);color:var(--color-text)}.button--secondary:not(:disabled):hover{border-color:var(--color-border-strong);background:var(--color-surface-hover);color:var(--color-blue);box-shadow:var(--shadow-button-hover)}.button--secondary:not(:disabled):active{background:var(--color-surface-active)}.button--danger{border-color:var(--color-red-dark);background:var(--color-error);color:var(--color-white)}.button--danger:not(:disabled):hover{background:var(--color-error-hover);box-shadow:var(--shadow-button-hover)}.button--danger:not(:disabled):active{background:var(--color-error-active)}.button:focus-visible{box-shadow:var(--focus-ring);outline:none}.button--full{width:100%}.button:disabled{cursor:not-allowed;box-shadow:none;opacity:.5}.tri-signal-dot{vertical-align:middle;border-radius:999px;width:.75rem;height:.75rem;display:inline-block}.tri-signal-dot--green{background-color:var(--color-success)}.tri-signal-dot--yellow{background-color:var(--color-warning)}.tri-signal-dot--red{background-color:var(--color-error)}.tri-signal-dot--gray{background-color:var(--color-neutral)}.list-table{width:100%}.list-table__viewport{border:var(--border-width-thin) solid var(--color-border-strong);border-radius:var(--radius-md);background-color:var(--color-surface);width:100%;overflow-x:auto;box-shadow:0 0 0 1px #cbd5e138,0 .125rem .4rem #1f2d560d}.list-table__table{border-collapse:collapse;width:100%;font-size:.95rem}.list-table__head{background-color:var(--color-surface-active)}.list-table__header-cell{padding:var(--space-3) var(--space-4);text-align:left;font-weight:var(--font-weight-bold);color:var(--color-text);border-bottom:var(--border-width-thin) solid var(--color-border-strong);white-space:nowrap}.list-table__body td{padding:var(--space-3) var(--space-4);border-bottom:var(--border-width-thin) solid var(--color-border);vertical-align:middle}.list-table__body tr:last-child td{border-bottom:none}.list-table__row{cursor:pointer}.list-table__row>td{transition:background-color var(--transition-fast), box-shadow var(--transition-fast);background-color:#0000}.list-table__row:not(.list-table__row--selected):hover>td{background-color:var(--color-surface-hover)}.list-table__row--selected>td{background-color:var(--color-blue-soft)}.list-table__row--selected>td:first-child{box-shadow:inset .25rem 0 0 var(--color-blue)}.list-table__row--selected:hover>td{background-color:var(--color-blue-soft)}.list-table__row:focus-visible{outline:2px solid var(--color-blue);outline-offset:-2px}.list-table__empty-cell{padding:var(--space-6) var(--space-4);text-align:center;color:var(--color-black);font-weight:var(--font-weight-semibold)}.icon-button{border-radius:var(--radius-md);width:2.25rem;height:2.25rem;color:var(--color-text);background:0 0;border:1px solid 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0;color:var(--color-text-muted);font-size:var(--font-size-sm);font-weight:var(--font-weight-regular);line-height:var(--line-height-relaxed)}.modal__close{width:2rem;height:2rem;color:var(--color-white);font-size:1.35rem;font-weight:var(--font-weight-bold);flex:none;line-height:1}.modal__body{padding:var(--space-5)}.modal__preference{align-items:center;gap:var(--space-3);margin-top:var(--space-4);color:var(--color-text-muted);font-size:var(--font-size-sm);line-height:var(--line-height-normal);cursor:pointer;display:flex}.modal__preference input{width:1rem;height:1rem;accent-color:var(--color-blue);cursor:pointer;flex:none;margin:0}.modal__actions{justify-content:flex-end;align-items:center;gap:var(--space-3);margin-top:var(--space-6);display:flex}@media (width<=36rem){.modal{padding:var(--space-4) var(--space-3);align-items:flex-start;overflow-y:auto}.modal__dialog{width:100%;max-height:none}.modal__actions{flex-direction:column-reverse;align-items:stretch}.modal__actions .button{width:100%}}.modal__close:not(:disabled):hover{color:var(--color-white);background-color:#ffffff1f;border-color:#ffffff59}.page-alert{justify-content:space-between;align-items:flex-start;gap:var(--space-4);width:100%;padding:var(--space-4);border:var(--border-width-thin) solid transparent;border-radius:var(--radius-md);box-shadow:var(--shadow-surface);display:flex}.page-alert__content{gap:var(--space-1);flex-direction:column;flex:1;min-width:0;display:flex}.page-alert__title{font-size:var(--font-size-sm);font-weight:var(--font-weight-bold);line-height:var(--line-height-normal);margin:0}.page-alert__message{font-size:var(--font-size-sm);font-weight:var(--font-weight-regular);line-height:var(--line-height-normal);margin:0}.page-alert__dismiss{color:inherit;font:inherit;font-size:var(--font-size-base);cursor:pointer;background:0 0;border:0;flex:none;padding:0;line-height:1}.page-alert__dismiss:focus-visible{outline-offset:2px;outline:2px 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var(--color-surface));color:var(--color-blue)}.wizard-step-indicator{align-items:center;gap:var(--space-4);flex-wrap:wrap;display:flex}.wizard-step{align-items:center;gap:var(--space-2);color:#6b7280;font-size:.95rem;font-weight:600;display:inline-flex}.wizard-step-number{color:#374151;background:#e5e7eb;border-radius:999px;justify-content:center;align-items:center;width:1.75rem;height:1.75rem;font-size:.85rem;display:inline-flex}.wizard-step--active{color:var(--color-blue)}.wizard-step--active .wizard-step-number{background:var(--color-blue);color:var(--color-white)}.wizard-step--complete .wizard-step-number{background:var(--color-green);color:var(--color-white)}.tutor-library-table__row{cursor:pointer;transition:background-color 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var(--space-3);color:var(--color-text);font-size:var(--font-size-sm);font-weight:var(--font-weight-regular);line-height:var(--line-height-relaxed)}.prompt-details-panel__meta{margin:var(--space-2) 0 0;color:var(--color-text);font-size:var(--font-size-sm);font-weight:var(--font-weight-regular);line-height:var(--line-height-normal)}.prompt-details-panel__prompt-text-wrapper{margin-top:var(--space-4)}.prompt-details-panel__section-title{margin:0 0 var(--space-2);color:var(--color-text);font-size:1.1rem;font-weight:var(--font-weight-semibold);line-height:var(--line-height-normal)}.prompt-details-panel__prompt-text{padding:var(--space-4);border:var(--border-width-thin) solid 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tr:last-child td{border-bottom:0}.classroom-standby-roster-table__empty{color:var(--color-gray-dark);text-align:center;font-weight:600}.classroom-seats-box{gap:var(--space-4);flex-direction:column;width:100%;display:flex}.classroom-seats-box__header{justify-content:space-between;align-items:flex-start;gap:var(--space-4);display:flex}.classroom-seats-box__heading{gap:var(--space-1);flex-direction:column;display:flex}.classroom-seats-box__title{color:var(--color-text)}.classroom-seats-box__subtitle,.classroom-seats-box__count,.classroom-seats-box__message{color:var(--color-gray-dark);font-weight:600}.classroom-seats-box__actions{justify-content:flex-end;gap:var(--space-3);flex-wrap:wrap;display:flex}@media (width<=900px){.classroom-seats-box__header{flex-direction:column}.classroom-seats-box__actions{justify-content:flex-start}}.classroom-seat-table__row{transition:background-color 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