.tool{--fc-cream:#fffbf2;--fc-ink:#24262b;--fc-rule-red:#c1504d;--fc-rule-blue:#5a78c852;--fc-muted:#767676;--fc-green:#3f8f5f;--fc-green-bg:#e7f4ec;--fc-amber:#b9702a;--fc-amber-bg:#fbeedd;--font-mono:"Space Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;--font-hand:"Caveat", cursive;width:min(100%, var(--content-width));padding:var(--space-lg) 0;margin-inline:auto}.tool-header{margin-bottom:var(--space-lg)}.tool-header h1{margin:0 0 .5rem}.tool-header p{color:var(--fc-muted);margin:0}.fc-tabs{margin-bottom:var(--space-lg);border-bottom:1px solid #ddd;gap:.25rem;display:flex}.fc-tab{font:inherit;color:var(--fc-muted);cursor:pointer;background:#f3f1ea;border:1px solid #ddd;border-bottom:none;border-radius:8px 8px 0 0;padding:.65rem 1.1rem;font-weight:600;transform:translateY(1px)}.fc-tab.is-active{background:var(--fc-cream);color:var(--fc-ink);border-color:var(--fc-rule-red);box-shadow:inset 0 3px 0 var(--fc-rule-red)}.fc-view[hidden]{display:none}.primary-button,.secondary-button,.danger-button,.text-toggle-button{font:inherit;border-radius:var(--radius);cursor:pointer;background:#fff;border:1px solid #ccc;padding:.65rem 1.1rem;font-size:.9rem;transition:background .15s,border-color .15s,transform .1s}.primary-button{background:var(--fc-ink);color:#fff;border-color:var(--fc-ink)}.primary-button:hover:not(:disabled){transform:translateY(-1px)}.primary-button:disabled{opacity:.45;cursor:not-allowed;transform:none}.secondary-button:hover{background:#f0f0f0;border-color:#999}.danger-button{color:#c62828;border-color:#ef9a9a}.danger-button:hover:not(:disabled){background:#ffebee}.danger-button:disabled{opacity:.4;cursor:not-allowed}.text-toggle-button{color:var(--fc-muted);text-underline-offset:3px;background:0 0;border:none;padding:.4rem 0;text-decoration:underline}.text-toggle-button:hover{color:var(--fc-ink)}.fc-add-row{margin-bottom:var(--space-md);grid-template-columns:1fr 1fr auto;align-items:end;gap:.75rem;display:grid}.fc-field{flex-direction:column;gap:.35rem;display:flex}.fc-field label{color:var(--fc-muted);font-size:.8rem;font-weight:600}.fc-field input{font:inherit;border-radius:var(--radius);border:1px solid #ccc;padding:.65rem .8rem}.fc-field input:focus-visible,.fc-flashcard:focus-visible{outline:2px solid var(--fc-rule-red);outline-offset:2px}.fc-card-list{flex-direction:column;gap:.5rem;margin:0 0 .5rem;padding:0;list-style:none;display:flex}.fc-card-row{border-radius:var(--radius);background:#fafafa;border:1px solid #e3e3e3;grid-template-columns:1fr 1fr auto;align-items:center;gap:.75rem;padding:.6rem .8rem;display:grid}.fc-card-row input{font:inherit;background:#fff;border:1px solid #ddd;border-radius:8px;padding:.45rem .6rem;font-size:.9rem}.fc-row-delete{color:#b0413f;cursor:pointer;background:0 0;border:none;padding:.3rem .5rem;font-size:1.1rem;line-height:1}.fc-row-delete:hover{color:#7a2b29}.fc-empty-note{color:var(--fc-muted);font-size:.9rem}.fc-card-list:not(:empty)+.fc-empty-note{display:none}.fc-bulk{margin:var(--space-md) 0;padding-top:var(--space-md);border-top:1px dashed #ddd;flex-direction:column;gap:.6rem;display:flex}.fc-bulk-title{margin:0;font-size:1rem}.fc-bulk-hint{color:var(--fc-muted);margin:0;font-size:.85rem}.fc-bulk-hint code{background:#f0efe9;border-radius:4px;padding:.1rem .35rem;font-size:.85em}#bulkTextarea{font:inherit;border-radius:var(--radius);resize:vertical;border:1px solid #ccc;min-height:120px;padding:.8rem}.fc-bulk-status{min-height:1.2rem;color:var(--fc-green);margin:0;font-size:.85rem}.fc-deck-bar{padding-top:var(--space-md);color:var(--fc-muted);border-top:1px solid #eee;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;font-size:.9rem;display:flex}.fc-deck-bar-actions{gap:.6rem;display:flex}.fc-study-empty,.fc-study-complete{text-align:center;padding:var(--space-xl) 0;color:var(--fc-muted)}.fc-study-complete p{font-family:var(--font-hand);color:var(--fc-ink);margin-bottom:1rem;font-size:1.4rem}.fc-stage{padding:var(--space-md) 0 var(--space-lg);flex-direction:column;align-items:center;display:flex}.fc-stage[hidden]{display:none}.fc-card-wrap{width:min(92vw,480px);height:300px;margin-bottom:var(--space-md);position:relative}.fc-stack{background:var(--fc-cream);border:1px solid #ddd;border-radius:14px;transition:opacity .25s,transform .25s;position:absolute;inset:0;box-shadow:0 6px 14px #0000000f}.fc-stack-1{transform:rotate(-3deg)translate(4px,6px)}.fc-stack-2{opacity:.7;transform:rotate(3deg)translate(-4px,10px)}.fc-stack.is-hidden{opacity:0}.fc-flashcard{perspective:1400px;cursor:pointer;border-radius:14px;position:absolute;inset:0}.fc-flashcard-inner{width:100%;height:100%;transform-style:preserve-3d;transition:transform .55s cubic-bezier(.4,.15,.2,1);position:relative}.fc-flashcard.is-flipped .fc-flashcard-inner{transform:rotateY(180deg)}.fc-flashcard.is-exiting-known .fc-flashcard-inner{opacity:0;transition:transform .4s,opacity .4s;transform:translate(140%)rotate(12deg)}.fc-flashcard.is-exiting-learning .fc-flashcard-inner{opacity:0;transition:transform .4s,opacity .4s;transform:translate(-140%)rotate(-12deg)}.fc-face{backface-visibility:hidden;background-color:var(--fc-cream);background-image:linear-gradient(to right, transparent 0 46px, var(--fc-rule-red) 46px 47px, transparent 47px 100%), repeating-linear-gradient(to bottom, transparent 0 31px, var(--fc-rule-blue) 31px 32px);border:1px solid #ddd;border-radius:14px;flex-direction:column;padding:2.2rem 1.75rem 1.75rem 3rem;display:flex;position:absolute;inset:0;box-shadow:0 10px 24px #0000001a}.fc-face-back{transform:rotateY(180deg)}.fc-hole{background:#eee7d6;border-radius:50%;width:14px;height:14px;position:absolute;top:14px;left:16px;box-shadow:inset 0 2px 3px #00000040}.fc-face-label{font-family:var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--fc-muted);margin-bottom:.75rem;font-size:.7rem}.fc-face-text{font-family:var(--font-mono);color:var(--fc-ink);flex:1;margin:0;font-size:1.35rem;font-weight:700;line-height:1.5;overflow-y:auto}.fc-face-back .fc-face-text{font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:1.15rem;font-weight:400}.fc-flip-hint{font-family:var(--font-hand);color:var(--fc-rule-red);opacity:.75;align-self:flex-end;font-size:1.15rem}.fc-progress{width:min(92vw,480px);margin-bottom:var(--space-md);text-align:center}.fc-progress-text{font-family:var(--font-hand);color:var(--fc-muted);margin-bottom:.4rem;font-size:1.25rem;display:block}.fc-progress-track{background:#eee;border-radius:999px;height:6px;overflow:hidden}.fc-progress-fill{background:var(--fc-green);border-radius:999px;height:100%;transition:width .3s}.fc-study-actions{gap:.75rem;margin-bottom:.75rem;display:flex}.fc-action-button{font:inherit;border-radius:var(--radius);cursor:pointer;border:1px solid #0000;padding:.75rem 1.4rem;font-weight:600;transition:transform .1s}.fc-action-button:hover{transform:translateY(-1px)}.fc-action-learning{background:var(--fc-amber-bg);color:var(--fc-amber);border-color:#f0d9bb}.fc-action-known{background:var(--fc-green-bg);color:var(--fc-green);border-color:#c9e6d3}.fc-study-secondary{gap:1.25rem;display:flex}.fc-study-footer{margin-top:var(--space-md);padding-top:var(--space-md);text-align:center;border-top:1px solid #eee}@media (width<=640px){.fc-add-row{grid-template-columns:1fr}.fc-card-row{grid-template-columns:1fr;gap:.4rem}.fc-row-delete{justify-self:end}.fc-deck-bar{flex-direction:column;align-items:flex-start}.fc-card-wrap{height:340px}}@media (prefers-reduced-motion:reduce){.fc-flashcard-inner,.fc-flashcard.is-exiting-known .fc-flashcard-inner,.fc-flashcard.is-exiting-learning .fc-flashcard-inner,.fc-stack,.primary-button,.fc-action-button{transition:opacity .2s!important;transform:none!important}.fc-face-back{transform:none!important}.fc-flashcard.is-flipped .fc-face-front,.fc-flashcard:not(.is-flipped) .fc-face-back{opacity:0}.fc-face{transition:opacity .2s}}