*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--color-bg: #ffffff;--color-surface: #f7f7f7;--color-border: #ddd;--color-text: #111;--color-text-muted: #666;--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-error: #dc2626;--radius: 8px;--font: system-ui, -apple-system, sans-serif;--string-1: #e53e3e;--string-2: #dd6b20;--string-3: #d69e2e;--string-4: #38a169;--string-5: #3182ce;--string-6: #805ad5}body{font-family:var(--font);background:var(--color-bg);color:var(--color-text);line-height:1.5;-webkit-font-smoothing:antialiased}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--color-surface);padding:24px}.auth-card{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius);padding:40px 36px;width:100%;max-width:400px;box-shadow:0 2px 8px #0000000f}.auth-title{font-size:28px;font-weight:700;letter-spacing:-.5px;color:var(--color-text);margin-bottom:4px}.auth-subtitle{color:var(--color-text-muted);margin-bottom:28px}.auth-form{display:flex;flex-direction:column;gap:18px}.auth-label{display:flex;flex-direction:column;gap:6px;font-size:14px;font-weight:500}.auth-input{padding:10px 12px;border:1px solid var(--color-border);border-radius:var(--radius);font-size:16px;font-family:var(--font);outline:none;transition:border-color .15s}.auth-input:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px #2563eb1f}.auth-button{padding:12px;background:var(--color-primary);color:#fff;border:none;border-radius:var(--radius);font-size:16px;font-weight:600;cursor:pointer;transition:background .15s;margin-top:4px}.auth-button:hover:not(:disabled){background:var(--color-primary-hover)}.auth-button:disabled{opacity:.6;cursor:not-allowed}.auth-error{background:#fef2f2;border:1px solid #fecaca;color:var(--color-error);border-radius:var(--radius);padding:10px 14px;font-size:14px}.auth-footer{margin-top:20px;text-align:center;font-size:14px;color:var(--color-text-muted)}.auth-link{color:var(--color-primary);text-decoration:none;font-weight:500}.auth-link:hover{text-decoration:underline}.songlist-page{min-height:100vh;display:flex;flex-direction:column}.songlist-header{display:flex;align-items:center;justify-content:space-between;padding:16px 32px;border-bottom:1px solid var(--color-border)}.songlist-title{font-size:22px;font-weight:700}.songlist-user{display:flex;align-items:center;gap:16px;font-size:14px;color:var(--color-text-muted)}.songlist-main{padding:40px 32px}.songlist-placeholder{color:var(--color-text-muted)}.songlist-toolbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.songlist-heading{font-size:18px;font-weight:600}.btn-primary{background:var(--color-primary);color:#fff;border:none;border-radius:var(--radius);padding:9px 16px;font-size:14px;font-weight:600;cursor:pointer;transition:background .12s}.btn-primary:hover:not(:disabled){background:var(--color-primary-hover)}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.song-cards{list-style:none;display:flex;flex-direction:column;gap:10px;max-width:640px}.song-card{display:flex;align-items:center;gap:16px;padding:14px 18px;border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-bg)}.song-title-link{background:none;border:none;font-size:16px;font-weight:600;color:var(--color-primary);cursor:pointer;padding:0;text-align:left;flex:1}.song-title-link:hover{text-decoration:underline}.song-title-input{flex:1;font-size:16px;font-weight:600;padding:4px 8px;border:1px solid var(--color-primary);border-radius:6px;outline:none}.song-meta{font-size:13px;color:var(--color-text-muted)}.song-actions{display:flex;gap:8px}.btn-danger{color:var(--color-error)}.btn-danger:hover{background:#fef2f2}.print-doc{background:#fff}.print-system{break-inside:avoid;page-break-inside:avoid}.print-system canvas{display:block}.save-status{font-size:13px;color:var(--color-text-muted)}.save-status.error{color:var(--color-error)}.btn-ghost{background:none;border:1px solid var(--color-border);border-radius:var(--radius);padding:6px 14px;font-size:14px;cursor:pointer;color:var(--color-text);transition:background .12s}.btn-ghost:hover{background:var(--color-surface)}.editor-page{min-height:100vh;display:flex;flex-direction:column;background:var(--color-bg)}.editor-titlebar{display:flex;justify-content:center;align-items:center;padding:12px 24px 4px}.editor-title{font-size:20px;font-weight:700;color:var(--color-text);text-align:center}.editor-header{display:flex;align-items:center;gap:16px;padding:12px 24px;border-bottom:1px solid var(--color-border)}.editor-song-title{font-size:16px;font-weight:600}.editor-header-spacer{flex:1}.editor-main{flex:1;padding:24px;overflow:auto}.staff-canvas-container{width:100%;max-width:1100px;margin:0 auto}.staff-canvas{display:block;cursor:pointer}.editor-hint{font-size:13px;color:var(--color-text-muted)}.view-options{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.view-label{font-size:12px;font-weight:600;color:var(--color-text-muted)}.octave-toggle{display:inline-flex;border:1px solid var(--color-border);border-radius:var(--radius);overflow:hidden}.color-settings{position:relative}.popover-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:30}.color-panel{position:absolute;top:calc(100% + 6px);right:0;z-index:31;width:230px;background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:0 6px 20px #0000001f;padding:14px;display:flex;flex-direction:column;gap:8px}.color-toggle{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;padding-bottom:8px;border-bottom:1px solid var(--color-border)}.color-rows{display:flex;flex-direction:column;gap:6px}.color-rows.disabled{opacity:.45}.color-row{display:flex;align-items:center;justify-content:space-between;font-size:14px}.color-row-label em{color:var(--color-text-muted);font-style:normal}.color-row input[type=color]{width:40px;height:26px;padding:0;border:1px solid var(--color-border);border-radius:5px;background:none;cursor:pointer}.color-reset{align-self:flex-start;font-size:13px;margin-top:2px}.layout-panel{width:auto;min-width:230px}.layout-group{display:flex;flex-direction:column;gap:6px}.seg-btn{padding:7px 14px;border:none;background:var(--color-bg);font-size:13px;font-weight:500;cursor:pointer;color:var(--color-text);transition:background .12s}.seg-btn+.seg-btn{border-left:1px solid var(--color-border)}.seg-btn:hover{background:var(--color-surface)}.seg-btn.active{background:var(--color-primary);color:#fff}.toolbar{display:flex;align-items:center;gap:14px;padding:12px 24px;border-bottom:1px solid var(--color-border);background:var(--color-surface);flex-wrap:wrap}.toolbar-label{font-size:13px;font-weight:600;color:var(--color-text-muted)}.toolbar-group{display:flex;gap:6px}.dur-btn{padding:8px 16px;border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-bg);font-size:14px;font-weight:500;cursor:pointer;color:var(--color-text);transition:background .12s,border-color .12s}.dur-btn:hover{background:var(--color-surface)}.dur-btn.active{background:var(--color-primary);border-color:var(--color-primary);color:#fff}.toolbar-hint{font-size:12px;color:var(--color-text-muted);margin-left:auto}.loading-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;color:var(--color-text-muted);font-size:16px}