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var(--line-2);border-radius:var(--r-md);background:var(--paper);text-align:center;color:var(--ink-3);font-size:var(--fs-sm)}.empty-state strong{color:var(--ink-2);font-size:var(--fs-md)}.empty-state.compact,.folder-empty,.teacher-empty,.analytics-combo-empty,.review-unavailable{padding:var(--s-4);font-size:var(--fs-xs)}.review-unavailable{border-style:solid;border-color:var(--line)}.practice-modal-backdrop,.modal-backdrop{position:fixed;inset:0;z-index:60;display:grid;place-items:center;padding:var(--s-6);background:var(--backdrop);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);overflow-y:auto}.practice-modal,.modal-box,.auth-modal,.confirm-modal,.note-popup,.json-editor-modal,.delete-test-modal,.ai-key-modal,.vocab-lookup-modal,.admin-question-modal,.admin-edit-modal,.module-review-modal{display:flex;flex-direction:column;gap:var(--s-4);width:min(560px,100%);max-height:86vh;padding:var(--s-6);overflow-y:auto;border:1px solid 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var(--ease)}.modal-close:hover{background:var(--paper-3);color:var(--ink)}.modal-footnote{color:var(--ink-3);font-size:var(--fs-xs);text-align:center}.modal-switch-link{background:none;color:var(--ink);font-size:var(--fs-xs);font-weight:650;text-decoration:underline;text-underline-offset:3px}.delete-warning{padding:var(--s-3);border:1px solid var(--wrong-line);border-radius:var(--r-sm);background:var(--wrong-wash);color:var(--wrong);font-size:var(--fs-sm)}.app-toast{position:fixed;inset-inline:0;top:var(--s-4);z-index:80;width:max-content;max-width:min(420px,calc(100vw - var(--s-8)));margin-inline:auto;padding:var(--s-3) var(--s-5);border:1px solid var(--line-2);border-radius:var(--r-full);background:var(--ink);color:var(--paper);font-size:var(--fs-sm);font-weight:550;box-shadow:var(--e-3);transition:opacity var(--t-base) var(--ease)}.app-toast.error{border-color:var(--wrong);background:var(--wrong);color:var(--paper)}.app-toast.is-hiding{opacity:0}.sync-indicator{position:fixed;right:var(--s-4);bottom:var(--s-4);z-index:70;display:none;align-items:center;gap:var(--s-2);padding:var(--s-2) var(--s-3);border:1px solid var(--line-2);border-radius:var(--r-full);background:var(--paper);color:var(--ink-3);font-size:var(--fs-xs);box-shadow:var(--e-2)}.sync-indicator.is-visible{display:inline-flex}.sync-indicator.is-offline{border-color:var(--warn-line);background:var(--warn-wash);color:var(--warn)}.metric-grid{display:grid;grid-template-columns:1.7fr repeat(3,minmax(0,1fr));gap:var(--s-3);align-items:stretch}.metric-grid>.metric-card:nth-child(3){order:-1;border-color:var(--line-2);background:var(--paper-2)}.metric-grid>.metric-card:nth-child(3) strong{font-size:var(--fs-3xl)}.metric-grid>.metric-card:nth-child(1) strong,.metric-grid>.metric-card:nth-child(2) 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span{color:var(--ink-2);font-size:var(--fs-sm)}.access-strip{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:var(--s-3);padding:var(--s-3) var(--s-4);border:1px solid var(--line);border-radius:var(--r-md);background:var(--paper);font-size:var(--fs-sm)}.access-strip div{display:inline-flex;align-items:center;gap:var(--s-2);min-width:0;color:var(--ink-2)}.access-strip svg{color:var(--ink-4)}.access-strip strong{font-size:var(--fs-xs);font-weight:650;letter-spacing:var(--tr-wide);text-transform:uppercase;color:var(--ink-3)}.test-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:var(--s-3)}.test-grid>.test-card:has([data-delete-progress]){grid-column:span 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