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img{object-fit:contain;width:100%;max-height:620px;display:block}.source-text-viewer{border:1px solid var(--color-border-subtle);border-radius:var(--radius-md);background:var(--color-surface);max-height:420px;color:var(--color-text-strong);font:inherit;font-size:var(--font-size-xs);white-space:pre-wrap;margin:0;padding:8px;line-height:1.45;overflow:auto}.transcript-list{gap:8px;display:grid}.transcript-chunk{border:1px solid var(--color-border-subtle);border-radius:var(--radius-md);background:var(--color-surface);gap:6px;padding:10px;display:grid}.transcript-chunk span{color:var(--color-text-muted);font-size:var(--font-size-xs);font-weight:var(--font-weight-heavy)}.transcript-chunk p{color:var(--color-text-strong);font-size:var(--font-size-sm);margin-bottom:0;line-height:1.5}.practice-panel{gap:var(--app-panel-padding-compact);padding:var(--app-panel-padding);display:grid}.card-counter{justify-content:space-between;align-items:center;gap:var(--space-xl);font-weight:var(--font-weight-heavy);display:flex}.flashcard{place-items:center;gap:var(--space-lg);min-height:260px;padding:var(--space-6xl);border-radius:var(--radius-md);background:var(--color-accent-surface);color:var(--color-text-heading);text-align:center;display:grid}.flashcard span{color:var(--color-accent-text-muted);font-weight:var(--font-weight-heavy);text-transform:uppercase;letter-spacing:var(--letter-spacing-label)}.flashcard strong{max-width:720px;font-size:var(--font-size-2xl);line-height:var(--line-height-heading)}.question-stack{gap:var(--app-section-gap-compact);display:grid}.question-card{gap:var(--space-xl);padding:var(--app-section-gap);display:grid}.question-heading{justify-content:space-between;gap:var(--space-xl);color:var(--color-text-muted);font-size:.85rem;font-weight:var(--font-weight-heavy)}.choices{gap:var(--space-md);display:grid}.choice-button{padding:var(--space-xl);border-radius:var(--radius-md);border:1px solid var(--color-border-control);background:var(--color-surface);color:var(--color-text-heading);text-align:left}.choice-button:hover{border-color:var(--color-info)}.choice-button.correct{border-color:var(--color-success-border);background:var(--color-success-surface)}.choice-button.incorrect{border-color:var(--color-danger-border);background:var(--color-danger-surface)}.choice-button.muted{color:var(--color-text-subtle)}.inline-answer{gap:var(--space-lg)}.response-box{min-height:130px}.written-actions{gap:var(--space-md)}.written-actions .primary-action,.written-actions .secondary-action{min-height:var(--app-control-height-sm);padding:0 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8px;overflow-y:auto}.chat-preview-card{gap:var(--space-sm);padding:var(--app-card-padding);border:1px solid var(--color-info-border);border-radius:var(--radius-md);background:linear-gradient(180deg, #f7fbfffa, #ffffffeb), var(--color-info-surface-soft);color:var(--color-text-panel);display:grid}.chat-preview-card .eyebrow{color:var(--color-info-text)}.chat-preview-card strong{color:var(--color-text-heading);font-size:var(--font-size-sm);line-height:var(--line-height-heading)}.chat-preview-card p{color:var(--color-text-subtle);font-size:var(--font-size-xs);font-weight:var(--font-weight-bold);line-height:var(--line-height-body);margin:0}.material-chat-footer{gap:var(--space-md);align-self:end;min-width:0;display:grid}.material-chat-footer .status-line{margin:0}.chat-upgrade-card{gap:8px;display:grid}.chat-upgrade-card p{color:var(--color-text-subtle);font-size:var(--font-size-xs);font-weight:var(--font-weight-bold);line-height:var(--line-height-body);margin:0}.chat-upgrade-banner{box-sizing:border-box;border:1px solid var(--color-accent-border);border-radius:var(--radius-composer-shell);background:var(--color-accent-surface);width:100%;min-height:50px;color:var(--color-accent-text-strong);font:inherit;font-weight:var(--font-weight-heavy);line-height:var(--line-height-ui);text-align:center;cursor:pointer;box-shadow:var(--shadow-composer);justify-content:center;align-items:center;padding:12px 14px;display:flex}.chat-upgrade-banner:hover{border-color:var(--color-accent-border-dashed);background:var(--color-accent-surface-hover)}.chat-message{max-width:92%;color:var(--color-text);gap:6px;display:grid}.chat-message.student{justify-self:end}.chat-message.tutor{justify-self:start}.chat-message span{font-size:.78rem;font-weight:var(--font-weight-heavy);color:var(--color-text-subtle);display:block}.material-chat-panel .chat-message span{font-size:calc(.78rem + 2px)}.chat-message-content{border-radius:var(--radius-bubble);color:inherit;font:inherit;line-height:var(--line-height-body);overflow-wrap:anywhere;white-space:pre-wrap;margin:0;padding:12px 14px;display:block}.chat-message.student .chat-message-content{background:var(--color-info-surface);border-top-right-radius:6px}.chat-message.tutor .chat-message-content{background:var(--color-surface);border:1px solid var(--color-border-subtle);border-top-left-radius:6px}.chat-message-content p{margin-bottom:0}.chat-message-content strong{font-weight:var(--font-weight-heavy)}.chat-form{gap:10px}.chat-form input{flex:1}.material-chat-panel .chat-form{box-sizing:border-box;border:1px solid var(--color-border-control);border-radius:var(--radius-composer-shell);background:var(--color-surface);width:100%;min-width:0;max-width:100%;box-shadow:var(--shadow-composer);grid-template-columns:minmax(0,1fr) auto;align-self:end;align-items:center;gap:0 6px;padding:8px;display:grid}.material-chat-panel .chat-form textarea{box-sizing:border-box;resize:none;border-radius:var(--radius-composer);background:0 0;border:0;width:100%;min-width:0;max-width:100%;min-height:34px;max-height:80px;padding:8px 7px;font-size:calc(.825rem + 2px);line-height:1.35;overflow-y:hidden}.chat-composer-bar{grid-area:1/2;justify-content:flex-end;align-items:center;gap:6px;margin-top:0;display:flex}.material-chat-panel .chat-form 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var(--color-border-control);border-radius:var(--radius-md);background:var(--color-surface-muted);overflow-wrap:anywhere;margin:0}.auth-divider{align-items:center;gap:var(--space-lg);color:var(--color-text-muted);font-size:var(--font-size-xs);font-weight:var(--font-weight-heavy);grid-template-columns:1fr auto 1fr;display:grid}.auth-divider:before,.auth-divider:after{content:"";background:var(--color-border-subtle);height:1px}.auth-switch-row{gap:var(--space-md);padding-top:var(--space-xl);border-top:1px solid var(--color-border-subtle);flex-wrap:wrap;justify-content:space-between;display:flex}.text-action{color:var(--color-accent-text-dark);font:inherit;font-weight:var(--font-weight-heavy);cursor:pointer;background:0 0;border:0}.text-action:hover{text-decoration:underline}.auth-switch-row .text-action:hover{color:var(--color-accent-text-strong);text-decoration:none}.auth-switch-row .text-action:focus-visible{outline:3px solid var(--color-focus-ring);outline-offset:2px;border-radius:var(--radius-xs)}.auth-switch-row .text-action{min-height:var(--app-control-height-sm);padding:var(--space-xs) 0;font-size:var(--font-size-sm);font-weight:var(--font-weight-medium)}.account-delete-form{gap:var(--space-md);padding-top:var(--space-md);border-top:1px solid var(--color-border-subtle);display:grid}.account-delete-form p{color:var(--color-danger);margin-bottom:0;font-size:.78rem}.account-delete-actions{gap:var(--space-sm);display:flex}.inline-empty{align-items:center;gap:var(--space-lg);padding:var(--app-section-gap);border-radius:var(--radius-md);color:var(--color-text-subtle);background:var(--color-surface-muted);display:flex}.inline-empty p{margin-bottom:0}@media (width<=480px){.login-screen{padding:var(--app-page-gutter-mobile)}.login-card{padding:var(--app-panel-padding-compact)}.auth-modal-backdrop{padding:calc(env(safe-area-inset-top,0px) + 10px) 12px calc(env(safe-area-inset-bottom,0px) + 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input{accent-color:#925008;flex-shrink:0;width:18px;height:18px}.onboarding-email p{color:var(--color-text-subtle);margin:8px 0;line-height:1.5}.onboarding-email button{min-height:44px}@media (width<=600px){.onboarding-panel{padding:16px}.onboarding-main{flex-direction:column;align-items:stretch;gap:12px}.onboarding-main button{justify-content:center;width:100%}.onboarding-steps{gap:10px;font-size:11px}}