:root{--bg:#1a1a1a;--surface:#242424;--surface2:#303030;--border:#333;--text:#e0e0e0;--muted:#8b8b93;--accent:#d49a46;--accent2:#e8a846;--accent-alt:#5b5b66;--danger:#ef4444;--success:#22c55e;--chord:#d49a46;--ui-header-bg:var(--bg);--ui-card-bg:var(--surface);--ui-modal-bg:var(--surface);--ui-overlay:#000000bf;--ui-shadow:0 4px 20px #0006;--accent-bg:#d49a461f;--accent-rgb:212, 154, 70;--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, "PingFang TC", "PingFang SC", "Microsoft YaHei UI", "Microsoft YaHei", "Noto Sans TC", sans-serif;--font-serif:"Crimson Pro", Georgia, "Times New Roman", "PingFang TC", "Microsoft YaHei", serif;--font-mono:"JetBrains Mono", ui-monospace, SFMono-Regular, Consolas, monospace;--badge-radius:20px;--radius:10px}:root[data-theme=light]{--bg:#f9f8f6;--surface:#fff;--surface2:#f0eee9;--border:#e8e6e1;--text:#2a2a2a;--muted:#71717a;--accent:#c77322;--accent2:#da7823;--accent-alt:#a1a1aa;--danger:#dc2626;--success:#16a34a;--chord:#c77322;--ui-header-bg:var(--bg);--ui-card-bg:var(--surface);--ui-modal-bg:var(--surface);--ui-overlay:#0000004d;--ui-shadow:0 4px 20px #0000000f;--accent-bg:#c7732214;--accent-rgb:199, 115, 34}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html,body{width:100%;position:relative;overflow-x:hidden}body{background:var(--bg);background-image:radial-gradient(ellipse 80% 60% at 50% 0%, var(--accent-bg) 0%, transparent 60%);color:var(--text);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh;font-size:18px;line-height:1.6}[lang*=zh i] h1,[lang*=zh i] h2,[lang*=zh i] h3,[lang*=zh i] .view-title,[lang*=zh i] .song-view-title,[lang*=zh i] body{font-family:var(--font-sans)!important}#app{max-width:860px;margin:0 auto;padding:32px 24px}.view-header{justify-content:space-between;align-items:center;margin-bottom:24px;display:flex}.view-title{font-family:var(--font-serif);color:var(--text);font-size:28px;font-weight:500}.divider{border:none;border-top:1px solid var(--border);margin:24px 0}.empty{text-align:center;color:var(--muted);grid-column:1/-1;padding:80px 20px}.empty-icon{opacity:.3;margin-bottom:16px;font-size:56px}.empty-text{margin-bottom:20px;font-size:17px;font-weight:400}@keyframes viewFadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}#app.view-enter{animation:.22s cubic-bezier(.25,.46,.45,.94) both viewFadeIn}.demo-banner{background:var(--accent);color:#fff;text-align:center;padding:6px 16px;font-size:13px;line-height:1.4}#nav{z-index:100;background:var(--nav-bg);-webkit-backdrop-filter:blur(16px)saturate(1.2);border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;height:54px;padding:0 24px;display:flex;position:sticky;top:0}@media (width<=600px){#nav{padding:0 12px}.nav-brand{font-size:19px}.nav-btn{padding:6px 10px;font-size:13px}}.nav-brand{color:var(--accent);letter-spacing:.02em;cursor:pointer;white-space:nowrap;flex-shrink:0;align-items:center;gap:6px;font-family:Crimson Pro,-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,sans-serif;font-size:22px;font-weight:600;display:flex}.nav-logo{color:var(--accent);display:inline-flex}.nav-logo svg{width:24px;height:24px}.nav-links{flex-shrink:1;align-items:center;gap:4px;min-width:0;display:flex}.nav-btn{color:var(--muted);cursor:pointer;white-space:nowrap;background:0 0;border:none;border-radius:6px;flex-shrink:0;padding:6px 14px;font-family:Outfit,-apple-system,BlinkMacSystemFont,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans TC,sans-serif;font-size:14px;font-weight:400;transition:all .15s}.nav-btn:hover{color:var(--text);background:var(--surface2)}.nav-btn.active{color:var(--accent);background:var(--accent-bg);font-weight:500}.nav-icon{padding:6px 10px;font-size:16px}.nav-username{color:var(--muted);border-right:1px solid var(--border);margin-right:4px;padding:0 8px;font-size:13px}.nav-menu-wrap{margin-left:4px;position:relative}.nav-dropdown{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);z-index:200;min-width:160px;padding:6px 0;display:none;position:absolute;top:calc(100% + 8px);right:0}.nav-dropdown.open{display:block}.nav-dropdown-item{width:100%;color:var(--text);text-align:left;cursor:pointer;background:0 0;border:none;padding:10px 18px;font-family:Outfit,-apple-system,BlinkMacSystemFont,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans TC,sans-serif;font-size:14px;transition:background .12s;display:block}.nav-dropdown-item:hover{background:var(--surface2);color:var(--accent)}.nav-dropdown-divider{border:none;border-top:1px solid var(--border);margin:4px 0}.nav-signin{color:var(--accent)!important;font-weight:500!important}.nav-dropdown-primary{color:var(--accent);font-weight:600}.field{margin-bottom:14px}.field label{color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin-bottom:5px;font-size:12px;font-weight:500;display:block}input[type=text],input[type=password],input[type=search],input[type=number],input[type=url],input[type=date],textarea,select{background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius);width:100%;color:var(--text);--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;outline:none;padding:10px 12px;font-family:Outfit,-apple-system,BlinkMacSystemFont,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans TC,sans-serif;font-size:14px;transition:border-color .15s}@media (prefers-color-scheme:dark){input[type=text],input[type=password],input[type=search],input[type=number],input[type=url],input[type=date],textarea,select{--lightningcss-light: ;--lightningcss-dark:initial}}input:focus,textarea:focus,select:focus{border-color:var(--accent);box-shadow:var(--focus-ring);outline:none}input::placeholder,textarea::placeholder{color:var(--muted)}textarea{resize:vertical;min-height:300px;font-family:JetBrains Mono,monospace;font-size:13px;line-height:1.7}.btn{background:var(--accent);color:#000;cursor:pointer;border:none;border-radius:8px;align-items:center;gap:6px;padding:8px 18px;font-family:Outfit,-apple-system,BlinkMacSystemFont,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans TC,sans-serif;font-size:14px;font-weight:600;text-decoration:none;transition:all .2s cubic-bezier(.25,.46,.45,.94);display:inline-flex}.btn:hover{background:var(--accent2);box-shadow:var(--shadow-sm);transform:translateY(-1px)}.btn:active{box-shadow:none;transition-duration:60ms;transform:translateY(0)}.btn-ghost{background:var(--ghost-bg);border:1px solid var(--border);color:var(--text);box-shadow:none;border-radius:8px}.btn-ghost:hover{background:var(--surface2);border-color:var(--muted);color:var(--text);box-shadow:var(--shadow-sm);transform:translateY(-1px)}.btn-danger{border:1px solid var(--danger);color:var(--danger);background:0 0;border-radius:8px}.btn-danger:hover{background:var(--danger);color:#fff}.btn-sm{padding:6px 14px;font-size:13px}.btn-full{justify-content:center;width:100%}.song-grid{grid-template-columns:repeat(auto-fill,minmax(min(100%,320px),1fr));gap:12px;display:grid}.song-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;min-height:72px;padding:18px 22px;transition:all .22s cubic-bezier(.25,.46,.45,.94);display:flex}@media (width<=600px){.song-card{gap:8px;padding:14px 16px}.song-card-actions{border-top:1px solid var(--border);justify-content:flex-end;width:100%;margin-top:4px;margin-left:0;padding-top:8px}}.song-card:hover{border-color:var(--accent);box-shadow:var(--shadow-md), var(--glow-accent);transform:translateY(-3px)}.song-card:active{box-shadow:var(--shadow-sm);transition-duration:80ms;transform:translateY(0)}.song-card-info{flex:1;min-width:0}.song-card-title{color:var(--card-title);white-space:nowrap;text-overflow:ellipsis;letter-spacing:.01em;font-family:Crimson Pro,-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,sans-serif;font-size:19px;font-weight:600;overflow:hidden}.song-card-meta{color:var(--muted);letter-spacing:.02em;opacity:.8;margin-top:5px;font-size:12.5px}.song-card-actions{flex-shrink:0;align-items:center;gap:8px;margin-left:16px;display:flex}.badge{text-transform:uppercase;letter-spacing:.05em;border-radius:20px;padding:3px 10px;font-size:11px;font-weight:500}.badge-admin{color:var(--accent);background:#f0a03026}.badge-owner{color:var(--accent2);background:#f0a03040}.badge-disabled{color:var(--danger);background:#ef444426}.badge-bpm{color:var(--accent-alt);background:#7a9bb51f}.badge-tag{color:var(--accent-alt);text-transform:lowercase;background:#7a9bb51f;font-size:10px}.badge-private{background:var(--surface-alt,#2a2a35);color:var(--muted);font-size:11px}.tag-picker{flex-wrap:wrap;gap:6px;display:flex}.tag-pill{border:1px solid var(--border);background:var(--surface);color:var(--muted);cursor:pointer;border-radius:20px;padding:4px 12px;font-size:12px;transition:all .15s}.tag-pill:hover{border-color:var(--accent)}.tag-pill.active{color:var(--accent);border-color:var(--accent);background:#f0a03026}.song-card-tags{flex-wrap:wrap;gap:4px;margin-top:4px;display:flex}.song-view-bpm{margin-top:6px}.song-view-tags{flex-wrap:wrap;gap:6px;margin-top:6px;display:flex}.toggle{flex-shrink:0;width:36px;height:20px;position:relative}.toggle input{opacity:0;width:0;height:0}.toggle-slider{background:var(--border);cursor:pointer;border-radius:10px;transition:all .2s;position:absolute;inset:0}.toggle-slider:before{content:"";background:var(--muted);border-radius:50%;width:14px;height:14px;transition:all .2s;position:absolute;bottom:3px;left:3px}.toggle input:checked+.toggle-slider{background:var(--accent)}.toggle input:checked+.toggle-slider:before{background:#000;transform:translate(16px)}.search-row{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:20px;display:flex}.search-row input{flex:3;min-width:0}.search-filters{gap:10px;margin-top:-12px;margin-bottom:16px;display:flex}.search-filters .language-filter{max-width:220px}#toast{background:var(--surface);border:1px solid var(--border);color:var(--text);border-radius:var(--radius);z-index:9999;pointer-events:none;visibility:hidden;opacity:0;box-shadow:var(--shadow-lg);max-width:90vw;padding:12px 24px;font-size:14px;font-weight:500;transition:transform .3s cubic-bezier(.34,1.56,.64,1),opacity .3s,visibility .3s;position:fixed;bottom:28px;left:50%;transform:translate(-50%)translateY(80px)}#toast.show{visibility:visible;opacity:1;transform:translate(-50%)translateY(0)}#toast.error{border-color:var(--danger);color:var(--danger)}#toast.success{border-color:var(--success);color:var(--success)}.badge-key{color:var(--accent);background:#d08a1826;font-family:JetBrains Mono,monospace;font-size:12px;font-weight:600}.format-badge{border-radius:var(--radius);white-space:nowrap;flex-shrink:0;padding:2px 8px;font-size:11px;font-weight:500}.format-badge.format-ok{color:#4caf50;background:#4caf5026;border:1px solid #4caf504d}.format-badge.format-warn{color:#ff9800;background:#ff980026;border:1px solid #ff98004d}.modal-backdrop{background:var(--ui-overlay);z-index:600;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.setlist-add-content{background:var(--surface-opaque,var(--bg));border:1px solid var(--border);width:90%;max-width:500px;max-height:80vh;box-shadow:var(--shadow-lg);border-radius:12px;padding:24px;overflow-y:auto}.setlist-add-content .song-card{background:var(--surface2,var(--bg));opacity:1!important}.ocr-row{margin-bottom:8px}.ocr-card{background:var(--surface);border:1px solid var(--border);border-radius:12px;width:90%;max-width:500px;max-height:90vh;padding:24px;overflow-y:auto}.ocr-preview{border-radius:var(--radius);border:1px solid var(--border);object-fit:contain;max-width:100%;max-height:200px}.ocr-progress-bar{background:var(--surface2);border-radius:3px;height:6px;overflow:hidden}.ocr-progress-fill{background:var(--accent);border-radius:3px;width:0%;height:100%;transition:width .3s}.ocr-result{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);width:100%;min-height:200px;max-height:300px;color:var(--text);resize:vertical;padding:12px;font-family:JetBrains Mono,monospace;font-size:12px;line-height:1.6}.ocr-chat-history{flex-direction:column;gap:4px;max-height:120px;margin-bottom:10px;display:flex;overflow-y:auto}.ocr-chat-bubble{border-radius:8px;max-width:85%;padding:6px 10px;font-size:12px}.ocr-chat-user{background:var(--accent-bg);color:var(--accent);align-self:flex-end}.ocr-chat-ai{background:var(--surface2);color:var(--muted);align-self:flex-start}.ocr-fix-row{gap:6px;margin-top:10px;display:flex}.ocr-fix-input{background:var(--surface);border:1px solid var(--border);color:var(--text);border-radius:8px;flex:1;padding:7px 10px;font-size:13px}.ocr-fix-input:focus{border-color:var(--accent);outline:none}.language-picker{position:relative}.language-picker-trigger{background:var(--surface);border:1px solid var(--border);text-align:left;cursor:pointer;width:100%;color:var(--text);border-radius:8px;padding:8px 12px;font-size:14px}.language-picker-trigger.placeholder{color:var(--muted)}.language-picker-dropdown{z-index:50;background:var(--surface);border:1px solid var(--border);border-radius:8px;max-height:280px;margin-top:4px;position:absolute;top:100%;left:0;right:0;overflow-y:auto;box-shadow:0 4px 12px #00000026}.language-picker-search{border:none;border-bottom:1px solid var(--border);width:100%;color:var(--text);background:0 0;outline:none;padding:8px 12px;font-size:14px}.language-picker-section{text-transform:uppercase;letter-spacing:.06em;color:var(--muted);padding:6px 12px;font-size:11px;font-weight:600}.language-picker-option{cursor:pointer;width:100%;color:var(--text);text-align:left;background:0 0;border:none;justify-content:space-between;align-items:center;padding:8px 12px;font-size:14px;display:flex}.language-picker-option:hover{background:var(--hover)}.language-picker-option.selected{color:var(--accent);font-weight:500}.language-picker-code{color:var(--muted);font-size:12px}.language-picker-divider{background:var(--border);height:1px;margin:4px 0}.badge-lang{background:var(--surface);color:var(--muted);letter-spacing:.05em;border-radius:4px;padding:2px 6px;font-size:11px;font-weight:600}.language-filter{border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:8px;padding:6px 10px;font-size:14px}.muted-hint{color:var(--muted);margin-bottom:12px;font-size:13px}.muted-text{color:var(--muted);font-size:13px}.flex-row{gap:8px;display:flex}.flex-align-center{align-items:center;gap:8px;display:flex}.field-message{margin-top:12px;font-size:13px}.ocr-invite-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:20px;padding:16px 20px}input[type=search]::-webkit-search-cancel-button{appearance:none}.search-input-wrapper{flex:3;align-items:center;min-width:0;display:flex;position:relative}.search-input-wrapper input[type=search]{padding-right:30px}.search-clear-btn{color:var(--muted);cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;padding:0 4px;font-size:18px;line-height:1;display:flex;position:absolute;right:10px}.search-clear-btn:hover{color:var(--text)}.hero{text-align:center;margin-bottom:8px;padding:48px 20px 36px}.hero-title{font-family:var(--font-serif);color:var(--accent);letter-spacing:.01em;margin-bottom:8px;font-size:42px;font-weight:600}.hero-tagline{color:var(--text);margin-bottom:6px;font-size:18px;font-weight:400}.hero-cta{color:var(--muted);max-width:360px;margin:0 auto;font-size:14px;line-height:1.5}.about-page{max-width:600px;margin:0 auto}.about-title{font-family:var(--font-serif);color:var(--accent);text-align:center;font-size:36px;font-weight:600}.about-subtitle{text-align:center;color:var(--muted);margin-bottom:32px;font-size:16px}.about-section{margin-bottom:24px}.about-section h3{font-family:var(--font-serif);color:var(--accent-alt);margin-bottom:6px;font-size:20px;font-weight:600}.about-section p{color:var(--muted);font-size:14px;line-height:1.6}.auth-wrap{justify-content:center;align-items:center;min-height:calc(100vh - 56px);display:flex}.auth-card{background:var(--ui-modal-bg);border:1px solid var(--border);width:100%;max-width:400px;box-shadow:var(--ui-shadow);border-radius:14px;padding:44px 40px}.auth-logo{font-family:var(--font-serif);color:var(--accent);text-align:center;margin-bottom:6px;font-size:36px;font-weight:600}.auth-tagline{text-align:center;color:var(--muted);margin-bottom:28px;font-size:13px}.auth-tabs{background:var(--surface2);border-radius:8px;margin-bottom:24px;padding:3px;display:flex}.auth-tab{color:var(--muted);font-family:var(--font-sans);cursor:pointer;background:0 0;border:none;border-radius:6px;flex:1;padding:8px;font-size:14px;font-weight:500;transition:all .15s}.auth-tab.active{background:var(--surface);color:var(--text)}.setlist-tabs{background:var(--surface2);border-radius:8px;gap:2px;margin-bottom:16px;padding:3px;display:flex}.setlist-tab{color:var(--muted);font-family:var(--font-sans);cursor:pointer;background:0 0;border:none;border-radius:6px;flex:1;padding:8px;font-size:14px;font-weight:500;transition:all .15s}.setlist-tab.active{background:var(--surface);color:var(--text)}.settings-section{break-inside:avoid;margin-bottom:32px}.settings-grid{column-gap:32px}@media (width>=900px){.settings-grid{column-count:2}}.corrections-section{border-top:1px solid var(--border);margin-top:32px;padding-top:16px}.correction-card{background:var(--ui-card-bg);border:1px solid var(--border);box-shadow:var(--shadow-sm);border-radius:12px;margin-bottom:12px;padding:16px}.correction-card-header{color:var(--muted);justify-content:space-between;align-items:center;margin-bottom:12px;font-size:13px;display:flex}.correction-actions{gap:8px;display:flex}.correction-preview{border:1px solid var(--border);background:var(--bg);scrollbar-width:none;-ms-overflow-style:none;border-radius:8px;max-height:300px;padding:12px;overflow-y:auto}.correction-preview::-webkit-scrollbar{display:none}.badge-pending{color:#f0a030;background:#f0a03026}.song-view-header{margin-bottom:24px}.song-view-nav{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.song-view-title{font-family:var(--font-serif);letter-spacing:-.01em;color:var(--text);font-size:38px;font-weight:500;line-height:1.15}.song-view-artist{color:var(--muted);margin-top:4px;font-size:20px}.song-view-meta{flex-wrap:wrap;align-items:center;gap:8px;margin-top:8px;display:flex}.version-selector-container{background:var(--surface);border:1px solid var(--border);border-radius:6px;align-items:center;gap:6px;padding:2px 4px 2px 8px;transition:all .2s;display:flex}.version-selector-container:hover{border-color:var(--accent)}.version-selector-label{text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-size:11px;font-weight:600}.version-select-compact{color:var(--text);cursor:pointer;font-size:12px;font-weight:500;font-family:var(--font-sans);background:0 0;border:none;outline:none;padding:0 4px}.transpose-bar{background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-sm);border-radius:12px;flex-wrap:wrap;align-items:center;gap:6px;margin:16px 0;padding:8px 12px;display:flex}.key-current{background:var(--accent-bg);color:var(--accent);border:1px solid rgba(var(--accent-rgb), .2);cursor:pointer;font-size:13.5px;font-weight:600;font-family:var(--font-mono);border-radius:8px;flex-shrink:0;align-items:center;gap:6px;padding:6px 14px;transition:all .2s;display:flex}.key-current:hover{background:rgba(var(--accent-rgb), .2);border-color:var(--accent)}.key-current.disabled{opacity:.5;cursor:default}.transpose-label{text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin-right:4px;font-size:11px;font-weight:600}.number-toggle{background:var(--surface2);border:1px solid var(--border);cursor:pointer;color:var(--muted);-webkit-user-select:none;user-select:none;border-radius:8px;flex-shrink:0;align-items:center;gap:6px;padding:6px 12px;font-size:13px;font-weight:500;transition:all .2s;display:flex}.number-toggle:hover{border-color:var(--accent-alt);color:var(--text)}.number-toggle.overridden{border-color:var(--accent);color:var(--accent);background:var(--accent-bg)}.number-toggle input{display:none}.transpose-btn{color:var(--muted);cursor:pointer;background:0 0;border:1px solid #0000;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;font-size:16px;transition:all 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