.fc-wrap{max-width:860px;margin:0 auto;padding:20px 16px 60px}.fc-wrap h1{font-size:1.8rem;font-weight:800;margin-bottom:4px}.fc-sub{font-size:.8rem;color:var(--text-muted);font-family:var(--font-mono);margin-bottom:28px}.fc-deck-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px;margin-bottom:32px}.fc-deck-btn{display:flex;flex-direction:column;gap:6px;padding:16px;border-radius:12px;border:2px solid var(--border2);background:var(--surface);cursor:pointer;text-align:left;transition:all .15s}.fc-deck-btn:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:0 4px 16px var(--shadow)}.fc-deck-icon{font-size:2rem}.fc-deck-name{font-weight:700;font-size:.95rem;color:var(--text)}.fc-deck-meta{font-size:.75rem;color:var(--text-muted);font-family:var(--font-mono)}.fc-deck-count{display:inline-block;background:var(--border2);border-radius:6px;padding:1px 7px;font-size:.7rem;font-weight:700;color:var(--text-muted);margin-top:2px}.fc-study{display:none}.fc-study.active{display:block}.fc-progress-bar{height:6px;border-radius:99px;background:var(--border2);margin-bottom:8px;overflow:hidden}.fc-progress-fill{height:100%;border-radius:99px;background:#22c55e;transition:width .3s}.fc-progress-text{font-size:.78rem;color:var(--text-muted);font-family:var(--font-mono);margin-bottom:20px;display:flex;justify-content:space-between}.fc-progress-score{color:#22c55e;font-weight:700}.fc-card-scene{perspective:1000px;margin-bottom:28px}.fc-card{position:relative;width:100%;min-height:220px;transform-style:preserve-3d;transition:transform .45s cubic-bezier(.4,0,.2,1);cursor:pointer;user-select:none}.fc-card.flipped{transform:rotateY(180deg)}.fc-card-face{position:absolute;inset:0;border-radius:16px;border:2px solid var(--border2);background:var(--surface);backface-visibility:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:28px 32px;text-align:center;min-height:220px}.fc-card-face.back{transform:rotateY(180deg);background:var(--surface2)}.fc-card-label{font-size:.7rem;font-family:var(--font-mono);color:var(--text-muted);text-transform:uppercase;letter-spacing:1px;margin-bottom:14px}.fc-card-text{font-size:1.2rem;font-weight:600;line-height:1.5;color:var(--text)}.fc-card-hint{font-size:.8rem;color:var(--text-muted);margin-top:14px;font-family:var(--font-mono)}.fc-controls{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-bottom:20px}.fc-btn{font-family:var(--font-mono);font-size:13px;font-weight:700;padding:10px 26px;border-radius:99px;border:2px solid var(--border2);background:var(--surface);color:var(--text);cursor:pointer;transition:all .15s}.fc-btn:hover{background:var(--surface2)}.fc-btn.flip-btn{background:#1e3a8a;color:#fff;border-color:#1e3a8a}.fc-btn.know-btn{background:#15803d;color:#fff;border-color:#15803d;display:none}.fc-btn.miss-btn{background:#b91c1c;color:#fff;border-color:#b91c1c;display:none}.fc-btn.know-btn.visible,.fc-btn.miss-btn.visible{display:inline-flex;align-items:center;gap:6px}.fc-kbd{text-align:center;font-size:.72rem;color:var(--text-muted);font-family:var(--font-mono);margin-bottom:28px}.fc-kbd kbd{background:var(--border2);border-radius:4px;padding:1px 6px;font-size:.72rem}.fc-options{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-bottom:20px}.fc-opt-btn{font-size:.75rem;font-family:var(--font-mono);padding:5px 14px;border-radius:99px;border:1.5px solid var(--border2);background:var(--surface);color:var(--text-muted);cursor:pointer;transition:all .15s}.fc-opt-btn:hover,.fc-opt-btn.on{background:var(--surface2);color:var(--text);border-color:var(--accent)}.fc-opt-label{font-size:.78rem;color:var(--text-muted)}.fc-mastery{display:flex;gap:4px;flex-wrap:wrap;justify-content:center;margin-bottom:20px}.fc-dot{width:10px;height:10px;border-radius:50%;background:var(--border2);transition:background .2s}.fc-dot.known{background:#22c55e}.fc-dot.missed{background:#ef4444}.fc-dot.current{background:#f59e0b;transform:scale(1.4)}.fc-results{display:none;text-align:center;padding:40px 16px}.fc-results.active{display:block}.fc-result-score{font-size:4rem;font-weight:800;line-height:1}.fc-result-pct{font-size:1.1rem;color:var(--text-muted);margin-bottom:8px}.fc-result-msg{font-size:1rem;color:var(--text-muted);margin-bottom:28px}.fc-missed-list{text-align:left;max-width:560px;margin:0 auto 28px}.fc-missed-item{padding:8px 12px;border-radius:8px;border:1px solid var(--border2);background:var(--surface);margin-bottom:8px}.fc-missed-q{font-size:.8rem;color:var(--text-muted);font-family:var(--font-mono)}.fc-missed-a{font-size:.9rem;font-weight:600;color:var(--text);margin-top:2px}@media (max-width: 600px){.fc-card-text{font-size:1rem}.fc-card-face{padding:20px 18px;min-height:180px}.fc-deck-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}}