@import "https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600&display=swap";*{box-sizing:border-box}body{min-height:100dvh;padding:56px 1rem 5rem;font-family:-apple-system,BlinkMacSystemFont,Inter,Segoe UI,sans-serif}body:before{content:"";pointer-events:none;z-index:0;background-image:linear-gradient(#006fee08 1px,#0000 1px),linear-gradient(90deg,#006fee08 1px,#0000 1px);background-size:40px 40px;position:fixed;inset:0}.fd-root{z-index:1;max-width:720px;margin:0 auto;position:relative}.fd-view{display:none}.fd-view.active{display:block}.fd-card{background:var(--card-bg);border:1px solid var(--border);border-radius:16px;padding:20px}.fd-section-title{letter-spacing:.08em;text-transform:uppercase;color:var(--fg-muted);align-items:center;gap:8px;margin-bottom:16px;font-size:14px;font-weight:700;display:flex}.fd-section-title:after{content:"";background:var(--border);flex:1;height:1px}.fd-btn{cursor:pointer;white-space:nowrap;border:none;border-radius:10px;justify-content:center;align-items:center;gap:6px;min-height:44px;padding:10px 18px;font-family:inherit;font-size:14px;font-weight:600;transition:all .15s;display:inline-flex}.fd-btn-primary{background:var(--primary);color:#fff}.fd-btn-primary:hover{background:var(--primary-h)}.fd-btn-primary:disabled{opacity:.4;cursor:not-allowed}.fd-btn-ghost{background:var(--card-bg);color:var(--fg-muted);border:1px solid var(--border)}.fd-btn-ghost:hover{border-color:var(--primary);color:var(--primary);background:#006fee0f}.fd-btn-danger{color:var(--danger);background:#f312601a;border:1px solid #f3126033}.fd-btn-danger:hover{background:#f312602e}.fd-btn-success{color:var(--success);background:#17c9641a;border:1px solid #17c96440}.fd-btn-success:hover{background:#17c96433}.fd-btn-sm{border-radius:8px;min-height:44px;padding:6px 12px;font-size:14px}.fd-btn-icon{border:1px solid var(--border);width:44px;height:44px;color:var(--fg-muted);cursor:pointer;background:0 0;border-radius:8px;justify-content:center;align-items:center;padding:0;font-size:14px;transition:all .15s;display:inline-flex}.fd-btn-icon:hover{border-color:var(--danger);color:var(--danger)}.fd-btn-icon.fd-btn-move:hover{border-color:var(--primary);color:var(--primary)}.fd-btn[hidden]{display:none}.fd-input{background:var(--bg);border:1px solid var(--border);width:100%;color:var(--fg);border-radius:8px;outline:none;padding:10px 12px;font-family:inherit;font-size:14px;transition:border-color .2s}.fd-input:focus{border-color:var(--primary)}.fd-textarea{background:var(--bg);border:1px solid var(--border);width:100%;color:var(--fg);resize:vertical;border-radius:8px;outline:none;min-height:120px;padding:12px 14px;font-family:JetBrains Mono,monospace;font-size:14px;line-height:1.6;transition:border-color .2s}.fd-textarea:focus{border-color:var(--primary)}@media (width<=768px),(hover:none){.fd-input,.fd-textarea{font-size:16px}}.fd-progress-bar{background:var(--border);border-radius:99px;height:4px;overflow:hidden}.fd-progress-fill{background:var(--primary);border-radius:99px;height:100%;transition:width .4s}#view-home .home-top{justify-content:space-between;align-items:center;gap:12px;margin-bottom:20px;display:flex}.deck-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px;display:grid}.deck-item{background:var(--card-bg);border:1px solid var(--border);cursor:pointer;border-radius:14px;flex-direction:column;gap:10px;padding:18px;transition:border-color .2s,transform .15s,box-shadow .2s;animation:.25s both fadeUp;display:flex;position:relative}.deck-item-del{cursor:pointer;width:44px;height:44px;color:var(--fg-muted);opacity:0;background:0 0;border:none;border-radius:8px;justify-content:center;align-items:center;transition:opacity .15s,color .15s,background .15s;display:flex;position:absolute;top:6px;right:6px}.deck-item:hover .deck-item-del,.deck-item-del:focus-visible{opacity:1}@media (hover:none){.deck-item-del{opacity:.7}}.deck-item-del:hover{color:var(--danger);background:#f3126014}.deck-item:hover{border-color:var(--primary);transform:translateY(-2px);box-shadow:0 6px 20px #006fee1a}.deck-item-emoji{color:var(--primary);font-size:28px;line-height:1;display:flex}.deck-item-name{color:var(--fg);text-overflow:ellipsis;white-space:nowrap;padding-right:36px;font-size:15px;font-weight:700;overflow:hidden}.deck-item-meta{color:var(--fg-muted);font-size:14px}.deck-item-progress{margin-top:2px}.deck-item-actions{gap:6px;margin-top:4px;display:flex}.deck-item-actions .fd-btn{flex:1}.deck-item-ai{cursor:pointer;background:#7c6af70a;border-style:dashed;border-color:#7c6af773}.deck-item-ai:hover{border-color:var(--primary);transform:translateY(-2px);box-shadow:0 6px 20px #7c6af71f}.deck-item-ai .deck-item-emoji{font-size:28px}.deck-item-ai .deck-item-name{color:var(--primary)}#ai-prompt-modal .fd-modal{max-width:540px}.ai-prompt-list{flex-direction:column;gap:10px;margin-top:12px;display:flex}.ai-prompt-block{background:var(--bg);border:1px solid var(--border);border-radius:10px;padding:12px 14px;position:relative}.ai-prompt-block-label{letter-spacing:.06em;text-transform:uppercase;color:var(--fg-muted);margin-bottom:6px;padding-right:64px;font-size:13px;font-weight:700}.ai-prompt-text{color:var(--fg);white-space:pre-wrap;font-family:JetBrains Mono,monospace;font-size:14px;line-height:1.6}.btn-copy-prompt{border:1px solid var(--border);cursor:pointer;color:var(--fg-muted);background:0 0;border-radius:7px;align-items:center;gap:4px;min-width:56px;min-height:44px;padding:4px 12px;font-family:inherit;font-size:14px;font-weight:600;transition:all .15s;display:inline-flex;position:absolute;top:10px;right:10px}.btn-copy-prompt:hover{border-color:var(--primary);color:var(--primary)}.ai-modal-note{color:var(--fg-muted);margin-top:12px;font-size:14px;line-height:1.6}.deck-empty{text-align:center;color:var(--fg-muted);grid-column:1/-1;padding:48px 20px;font-size:14px}.deck-empty-icon{color:var(--fg-muted);justify-content:center;margin-bottom:16px;font-size:48px;display:flex}.deck-empty-icon .ic{stroke-width:1.5px;opacity:.5}.deck-empty-title{color:var(--fg);margin-bottom:4px;font-size:16px;font-weight:700}.deck-empty-actions{flex-wrap:wrap;justify-content:center;gap:8px;margin-top:20px;display:flex}.fd-modal-overlay{z-index:200;background:#00000080;justify-content:center;align-items:center;padding:1rem;display:none;position:fixed;inset:0}.fd-modal-overlay.open{display:flex}.fd-modal{background:var(--card-bg);border:1px solid var(--border);border-radius:20px;flex-direction:column;width:100%;max-width:380px;max-height:90dvh;padding:28px;animation:.2s scaleIn;display:flex}.fd-modal-body{flex:1;margin-right:-14px;padding-right:14px;overflow-y:auto}.fd-modal-body::-webkit-scrollbar{width:6px}.fd-modal-body::-webkit-scrollbar-track{background:0 0}.fd-modal-body::-webkit-scrollbar-thumb{background:var(--border);border-radius:99px}.fd-modal-body::-webkit-scrollbar-thumb:hover{background:var(--fg-muted)}.fd-modal-title{margin:0 0 16px;font-size:17px;font-weight:700}.fd-modal-actions{justify-content:flex-end;gap:8px;margin-top:20px;display:flex}#view-deck .deck-top{flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:20px;display:flex}.deck-top-title{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;font-size:18px;font-weight:700;overflow:hidden}.fd-label{color:var(--fg-muted);margin-bottom:6px;font-size:14px;font-weight:600;display:block}.fd-input-row{gap:8px;display:flex}.fd-input-row .fd-input{flex:1}.bulk-toggle{color:var(--fg-muted);cursor:pointer;user-select:none;background:0 0;border:none;align-items:center;gap:8px;min-height:44px;padding:8px 0;font-family:inherit;font-size:14px;font-weight:600;display:flex}.bulk-toggle svg{transition:transform .2s}.bulk-toggle.open svg{transform:rotate(180deg)}.bulk-area{margin-top:10px;display:none}.bulk-area.open{display:block}.bulk-hint{color:var(--fg-muted);margin-bottom:6px;font-size:14px;line-height:1.5}.bulk-hint code{background:var(--border);color:var(--fg);border-radius:4px;padding:1px 5px;font-family:JetBrains Mono,monospace;font-size:13px}.card-list{flex-direction:column;gap:8px;margin-top:16px;display:flex}.card-row{background:var(--bg);border:1px solid var(--border);border-radius:10px;grid-template-columns:1fr 1fr auto;align-items:center;gap:8px;padding:10px 12px;animation:.2s both fadeUp;display:grid}.card-row-actions{align-items:center;gap:4px;display:flex}.fd-btn-icon:disabled{opacity:.25;cursor:default;pointer-events:none}.card-row-front,.card-row-back{text-overflow:ellipsis;white-space:nowrap;font-size:14px;overflow:hidden}.card-row-front{color:var(--fg);font-weight:600}.card-row-back{color:var(--fg-muted)}.card-list-empty{text-align:center;color:var(--fg-muted);padding:24px;font-size:14px}.study-opts{flex-wrap:wrap;gap:8px;margin-bottom:0;display:flex}.study-opt{background:var(--bg);border:1px solid var(--border);min-height:44px;color:var(--fg-muted);cursor:pointer;border-radius:8px;align-items:center;gap:6px;padding:6px 14px;font-family:inherit;font-size:14px;font-weight:600;transition:all .15s;display:flex}.study-opt.active{border-color:var(--primary);color:var(--primary);background:#006fee1a}#view-study .study-top{justify-content:space-between;align-items:center;gap:12px;margin-bottom:24px;display:flex}.study-counter{color:var(--fg-muted);font-size:14px;font-weight:700}.study-progress{margin-bottom:20px}.flip-scene:focus-visible{outline:3px solid var(--primary);outline-offset:4px;border-radius:20px}.flip-scene{perspective:1200px;cursor:pointer;height:340px;margin-bottom:20px}@media (width<=480px){.flip-scene{height:260px}}.fd-view.study-fullscreen{z-index:10000;background:var(--bg);flex-direction:column;padding:20px 24px;position:fixed;inset:0;overflow:hidden;display:flex!important}.study-fullscreen .study-top,.study-fullscreen .study-progress{flex-shrink:0;margin-bottom:16px}.study-fullscreen .flip-scene{flex:1 1 0;min-height:0;margin-bottom:16px}.study-fullscreen #study-actions{flex-shrink:0}.study-fullscreen .flip-face{padding:56px 40px 52px}.study-fullscreen .flip-face-label,.study-fullscreen .flip-face-hint{font-size:clamp(14px,1.6vw,20px)}.study-fullscreen .flip-text{font-size:max(18px, calc(clamp(28px, min(6vw, 10vh), 120px) * var(--len)))}.study-fullscreen .keyboard-hints{flex-shrink:0}body.fd-fullscreen .top-overlay,body.fd-fullscreen .top-overlay-left{display:none!important}.btn-fullscreen{background:var(--card-bg);border:1px solid var(--border);cursor:pointer;width:44px;height:44px;color:var(--fg-muted);border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;padding:0;transition:all .15s;display:inline-flex}.btn-fullscreen:hover{border-color:var(--primary);color:var(--primary)}.flip-card{width:100%;height:100%;transform-style:preserve-3d;transition:transform .45s cubic-bezier(.4,0,.2,1);position:relative}.flip-card.flipped{transform:rotateY(180deg)}.flip-face{backface-visibility:hidden;background:var(--card-bg);border:1px solid var(--border);user-select:none;border-radius:20px;flex-direction:column;justify-content:center;align-items:center;padding:48px 24px 44px;display:flex;position:absolute;inset:0}.flip-face-back{transform:rotateY(180deg)}.flip-face-label{letter-spacing:.08em;text-transform:uppercase;color:var(--fg-muted);font-size:14px;font-weight:700;position:absolute;top:16px;left:20px}.flip-face-hint{color:var(--fg-muted);align-items:center;gap:4px;font-size:14px;display:flex;position:absolute;bottom:16px}.flip-text{--len:1;font-size:max(15px, calc(clamp(18px, 4vw, 26px) * var(--len)));text-align:center;color:var(--fg);word-break:keep-all;overflow-wrap:anywhere;white-space:pre-line;overscroll-behavior:contain;width:100%;min-height:0;max-height:100%;font-weight:700;line-height:1.4;overflow-y:auto}.flip-text.len-m{--len:.85}.flip-text.len-l{--len:.7}.flip-text.len-xl{--len:.58}.flip-face-back .flip-text{color:var(--primary)}.study-actions{opacity:0;pointer-events:none;gap:10px;transition:opacity .25s,transform .25s;display:flex;transform:translateY(8px)}.study-actions.show{opacity:1;pointer-events:auto;transform:translateY(0)}.study-actions .fd-btn{flex:1;min-height:52px;padding:14px;font-size:16px}.keyboard-hints{flex-wrap:wrap;justify-content:center;gap:16px;margin-top:16px;display:flex}.kbd-hint{color:var(--fg-muted);align-items:center;gap:5px;font-size:14px;display:flex}@media (hover:none){.keyboard-hints{display:none}}.kbd{background:var(--bg);border:1px solid var(--border);color:var(--fg-muted);box-shadow:0 1px 0 var(--border);border-radius:5px;justify-content:center;align-items:center;gap:2px;padding:2px 7px;font-family:JetBrains Mono,monospace;font-size:13px;display:inline-flex}#view-result{text-align:center}.result-icon{color:var(--primary);justify-content:center;margin-bottom:12px;font-size:56px;display:flex}.result-icon .ic{stroke-width:1.75px}.result-title{margin-bottom:6px;font-size:22px;font-weight:800}.result-sub{color:var(--fg-muted);margin-bottom:28px;font-size:14px}.result-stats{grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:28px;display:grid}.result-stat{background:var(--card-bg);border:1px solid var(--border);border-radius:12px;padding:16px 8px}.result-stat-val{margin-bottom:4px;font-size:24px;font-weight:800}.result-stat-label{color:var(--fg-muted);font-size:14px;font-weight:600}.result-stat.pass .result-stat-val{color:var(--success)}.result-stat.fail .result-stat-val{color:var(--danger)}.result-actions{flex-wrap:wrap;justify-content:center;gap:10px;display:flex}@keyframes fadeUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}@keyframes popIn{0%{opacity:0;transform:scale(.9)}60%{transform:scale(1.04)}to{opacity:1;transform:scale(1)}}.result-icon{animation:.5s cubic-bezier(.4,0,.2,1) both popIn}@keyframes spin{to{transform:rotate(360deg)}}.spinner{vertical-align:middle;border:2px solid;border-top-color:#0000;border-radius:50%;width:12px;height:12px;margin-right:4px;animation:.6s linear infinite spin;display:inline-block}#share-dropdown{background:var(--card-bg);border:1px solid var(--border);z-index:9500;border-radius:10px;flex-direction:column;gap:3px;min-width:150px;padding:6px;display:none;position:fixed;box-shadow:0 4px 20px #00000026}#share-dropdown.open{display:flex}.share-opt{min-height:44px;color:var(--fg);cursor:pointer;text-align:left;background:0 0;border:none;border-radius:7px;align-items:center;gap:8px;padding:8px 12px;font-family:inherit;font-size:14px;font-weight:600;transition:background .12s;display:flex}.share-opt:hover{color:var(--primary);background:#006fee14}#badge-readonly{display:none}.is-view-only #badge-readonly{display:inline-flex}#btn-clone-deck{display:none}.is-view-only #btn-clone-deck{display:inline-flex}.is-view-only #card-add-section,.is-view-only .card-row .fd-btn-icon{display:none}.is-view-only #btn-deck-share{opacity:.35;pointer-events:none}#btn-deck-rename,#btn-deck-share{border:1px solid var(--border);width:44px;height:44px;color:var(--fg-muted);cursor:pointer;background:0 0;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;padding:0;transition:all .15s;display:inline-flex}#btn-deck-rename:hover,#btn-deck-share:hover{border-color:var(--primary);color:var(--primary)}.is-view-only #btn-deck-rename,.is-view-only #btn-deck-share{display:none}#deck-name-input{flex:1;min-width:60px;height:44px;padding:3px 8px;font-family:inherit;font-size:15px;font-weight:700}#badge-readonly{color:var(--primary);white-space:nowrap;background:#006fee1a;border:1px solid #006fee40;border-radius:99px;flex-shrink:0;align-items:center;gap:5px;padding:3px 10px;font-size:13px;font-weight:700}.share-import-info{background:var(--bg);border:1px solid var(--border);border-radius:10px;margin-bottom:16px;padding:14px 16px}.share-import-deck-name{color:var(--fg);margin-bottom:4px;font-size:15px;font-weight:700}.share-import-meta{color:var(--fg-muted);font-size:14px}.share-import-choices{flex-direction:column;gap:8px;display:flex}.share-import-choice{border:1px solid var(--border);cursor:pointer;background:var(--card-bg);text-align:left;border-radius:10px;flex-direction:column;gap:3px;padding:12px 14px;font-family:inherit;transition:border-color .15s,background .15s;display:flex}.share-import-choice:hover{border-color:var(--primary);background:#006fee0a}.share-import-choice-title{color:var(--fg);font-size:15px;font-weight:700}.share-import-choice-desc{color:var(--fg-muted);font-size:14px;line-height:1.5}