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p{margin:0;color:#555;line-height:1.6}.no-results{text-align:center;padding:3rem;background:#f8f9fa;border-radius:12px;margin-top:2rem}.no-results p{color:#7f8c8d;font-size:1.1rem;margin:.5rem 0}@media (max-width: 768px){.scale-controls{flex-direction:column;align-items:stretch}.control-group,.scale-select{width:100%}.position-navigator{flex-direction:column;gap:15px}.fretboard-container{padding:15px}.note-marker{width:32px;height:32px;font-size:12px}.fret-position,.fret-marker{min-width:80px}}.login-page{min-height:100vh;display:flex;justify-content:center;align-items:center;background:linear-gradient(135deg,#6b7280,#10b981);padding:var(--spacing-xl)}.login-container{background:var(--bg-primary);border-radius:var(--radius-xl);padding:var(--spacing-2xl);max-width:480px;width:100%;box-shadow:var(--shadow-xl)}.login-header{text-align:center;margin-bottom:30px}.login-header h1{font-size:2rem;margin:0 0 var(--spacing-sm) 0;color:var(--text-primary);font-weight:700;letter-spacing:-.025em}.login-header p{color:var(--text-secondary);margin:0;font-size:1rem}.error-message{background:#fee2e2;border:1px solid #fecaca;color:#991b1b;padding:12px;border-radius:8px;margin-bottom:20px;font-size:14px}.login-providers{display:flex;flex-direction:column;gap:12px;margin-bottom:20px}.login-btn{display:flex;align-items:center;gap:var(--spacing-md);padding:.875rem 1.25rem;border:1px solid var(--border-color);border-radius:var(--radius-md);background:var(--bg-primary);color:var(--text-primary);font-size:1rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast);width:100%;text-align:left}.login-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--border-dark)}.login-btn:disabled{opacity:.6;cursor:not-allowed}.login-btn svg{flex-shrink:0}.login-btn span{flex:1;text-align:center}.google-btn:hover:not(:disabled){border-color:#4285f4}.microsoft-btn:hover:not(:disabled){border-color:#00a4ef}.yahoo-btn:hover:not(:disabled){border-color:#6001d2}.apple-btn{background:#1c1c1e;color:#fff;border-color:#1c1c1e}.apple-btn:hover:not(:disabled){background:#2c2c2e;border-color:#2c2c2e}.login-divider{display:flex;align-items:center;gap:12px;margin:20px 0;color:#aaa}.login-divider:before,.login-divider:after{content:"";flex:1;height:1px;background:#e0e0e0}.continue-btn{background:#f5f5f5;border-color:#e0e0e0;justify-content:center}.continue-btn:hover:not(:disabled){background:#e8e8e8}.login-disclaimer{text-align:center;color:#999;font-size:14px;margin-top:20px;margin-bottom:0}@media (max-width: 768px){.login-container{padding:30px 20px}.login-header h1{font-size:1.75rem}.login-header p{font-size:.95rem}.login-btn{padding:12px 16px;font-size:15px}}@media (max-width: 480px){.login-page{padding:15px}.login-container{padding:25px 15px}.login-header h1{font-size:1.5rem}.login-btn{padding:11px 14px;font-size:14px}.login-btn svg{width:20px;height:20px}}.contact-container{max-width:1200px;margin:0 auto;padding:40px 20px}.contact-header{text-align:center;margin-bottom:50px}.contact-header h1{font-size:2.5rem;color:#1a1a1a;margin-bottom:15px;font-weight:700}.contact-header p{font-size:1.125rem;color:#666;max-width:600px;margin:0 auto}.contact-content{max-width:700px;margin:0 auto}.contact-form{background:#fff;padding:40px;border-radius:12px;box-shadow:0 2px 8px #0000001a}.form-group{margin-bottom:25px}.form-group label{display:block;margin-bottom:8px;font-weight:600;color:#1a1a1a;font-size:.95rem}.form-group input,.form-group textarea{width:100%;padding:12px 15px;border:2px solid #e0e0e0;border-radius:8px;font-size:1rem;font-family:inherit;transition:all .3s ease;background:#fff}.form-group input:focus,.form-group textarea:focus{outline:none;border-color:#2563eb;box-shadow:0 0 0 3px #2563eb1a}.form-group textarea{resize:vertical;min-height:120px}.submit-button{width:100%;padding:14px 28px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:8px;font-size:1.05rem;font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 12px #667eea66}.submit-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 16px #667eea80}.submit-button:active:not(:disabled){transform:translateY(0)}.submit-button:disabled{opacity:.6;cursor:not-allowed}.status-message{margin-top:20px;padding:15px 20px;border-radius:8px;font-size:.95rem}.status-message.success{background:#d4edda;color:#155724;border:1px solid #c3e6cb}.status-message.error{background:#f8d7da;color:#721c24;border:1px solid #f5c6cb}.status-message p{margin:0;line-height:1.5}.status-message a{color:inherit;font-weight:600;text-decoration:underline}@media (max-width: 768px){.contact-container{padding:30px 15px}.contact-header h1{font-size:2rem}.contact-header p{font-size:1rem}.contact-form{padding:25px}.form-group{margin-bottom:20px}}.user-menu{position:relative;display:inline-block}.login-button{display:flex;align-items:center;gap:var(--spacing-sm);padding:.5rem 1rem;background:#ffffffe6;color:var(--text-primary);border:1px solid rgba(255,255,255,.5);border-radius:var(--radius-md);font-size:.875rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast);white-space:nowrap;box-shadow:var(--shadow-sm)}.login-button:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);background:#fff;border-color:var(--accent-color)}.user-menu-button{display:flex;align-items:center;gap:var(--spacing-sm);padding:.375rem .75rem;background:#ffffffe6;border:1px solid rgba(255,255,255,.5);border-radius:var(--radius-full);cursor:pointer;transition:all var(--transition-fast);font-size:.875rem;font-weight:500;color:var(--text-primary);box-shadow:var(--shadow-sm)}.user-menu-button:hover{background:var(--bg-primary);box-shadow:var(--shadow-md);transform:translateY(-1px);border-color:var(--primary-color)}.user-avatar{width:32px;height:32px;border-radius:50%;object-fit:cover}.user-avatar-placeholder{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:14px}.user-name{max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.dropdown-arrow{transition:transform .2s ease}.dropdown-arrow.open{transform:rotate(180deg)}.user-menu-dropdown{position:absolute;top:calc(100% + 8px);right:0;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);min-width:240px;z-index:1000;animation:slideDown .2s ease}@keyframes slideDown{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.user-menu-header{padding:16px}.user-info-name{font-weight:600;color:var(--text-primary);margin-bottom:4px}.user-info-email{font-size:13px;color:var(--text-secondary);word-break:break-word}.user-menu-divider{height:1px;background:var(--border-color);margin:0 8px}.user-menu-item{width:100%;display:flex;align-items:center;gap:12px;padding:12px 16px;background:none;border:none;color:var(--text-primary);font-size:14px;font-weight:500;cursor:pointer;transition:background var(--transition-fast);text-align:left}.user-menu-item:hover{background:var(--bg-tertiary)}.user-menu-item:first-of-type{border-radius:0 0 12px 12px}.user-menu-item svg{flex-shrink:0;opacity:.7}@media (max-width: 768px){.user-name{display:none}.user-menu-button{padding:6px}.login-button{padding:8px 12px;font-size:13px}.user-menu-dropdown{min-width:200px}}@media (max-width: 480px){.user-menu-dropdown{right:-10px;min-width:180px}.user-menu-header{padding:12px}.user-menu-item{padding:10px 12px;font-size:13px}}:root{--primary-color: #6b7280;--primary-dark: #4b5563;--primary-light: #9ca3af;--primary-lighter: #e5e7eb;--accent-color: #10b981;--accent-dark: #059669;--accent-light: #34d399;--bg-primary: #fafaf9;--bg-secondary: #f5f5f4;--bg-tertiary: #e7e5e4;--bg-dark: #d6d3d1;--bg-darker: #a8a29e;--text-primary: #44403c;--text-secondary: #57534e;--text-tertiary: #78716c;--text-light: #a8a29e;--border-color: #e7e5e4;--border-dark: #d6d3d1;--success-color: #10b981;--warning-color: #f59e0b;--error-color: #ef4444;--info-color: #6b7280;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .04);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .08), 0 2px 4px -1px rgba(0, 0, 0, .04);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .08), 0 4px 6px -2px rgba(0, 0, 0, .04);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .08), 0 10px 10px -5px rgba(0, 0, 0, .03);--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-full: 9999px;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", sans-serif;--font-mono: "SF Mono", Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--transition-fast: .15s ease-in-out;--transition-base: .25s ease-in-out;--transition-slow: .35s ease-in-out}body{font-family:var(--font-sans);color:var(--text-primary);background-color:var(--bg-secondary);line-height:1.6}.page-container{max-width:1280px;margin:0 auto;padding:var(--spacing-xl);min-height:calc(100vh - 64px)}.page-header{margin-bottom:var(--spacing-2xl)}.page-title{font-size:2.25rem;font-weight:700;color:var(--text-primary);margin:0 0 var(--spacing-sm) 0;letter-spacing:-.025em}.page-subtitle{font-size:1.125rem;color:var(--text-secondary);margin:0;font-weight:400}.card{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:var(--spacing-xl);box-shadow:var(--shadow-sm);transition:box-shadow var(--transition-base)}.card:hover{box-shadow:var(--shadow-md)}.card-header{margin-bottom:var(--spacing-lg);padding-bottom:var(--spacing-lg);border-bottom:1px solid var(--border-color)}.card-title{font-size:1.5rem;font-weight:600;color:var(--text-primary);margin:0}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:.625rem 1.25rem;font-size:.875rem;font-weight:500;line-height:1.5;border-radius:var(--radius-md);border:none;cursor:pointer;transition:all var(--transition-fast);text-decoration:none;white-space:nowrap}.btn-primary{background:var(--primary-color);color:var(--text-light)}.btn-primary:hover:not(:disabled){background:var(--primary-dark);box-shadow:var(--shadow-md);transform:translateY(-1px)}.btn-secondary{background:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover:not(:disabled){background:var(--bg-tertiary);border-color:var(--border-dark)}.btn:disabled{opacity:.5;cursor:not-allowed}.form-group{margin-bottom:var(--spacing-lg)}.form-label{display:block;font-size:.875rem;font-weight:500;color:var(--text-primary);margin-bottom:var(--spacing-sm)}.form-input,.form-select{width:100%;padding:.625rem .875rem;font-size:.9375rem;line-height:1.5;color:var(--text-primary);background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-md);transition:all var(--transition-fast)}.form-input:focus,.form-select:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px var(--primary-lighter)}.badge{display:inline-flex;align-items:center;padding:.25rem .75rem;font-size:.75rem;font-weight:500;border-radius:var(--radius-full);line-height:1}.badge-primary{background:var(--primary-lighter);color:var(--primary-dark)}.badge-success{background:#d1fae5;color:#065f46}.badge-warning{background:#fef3c7;color:#92400e}.loading{display:flex;align-items:center;justify-content:center;padding:var(--spacing-2xl);color:var(--text-secondary)}.error-message{padding:var(--spacing-lg);background:#ef444426;border:1px solid rgba(239,68,68,.3);border-radius:var(--radius-md);color:#fca5a5;font-size:.875rem}.no-data{padding:var(--spacing-2xl);text-align:center;color:var(--text-tertiary)}@media (max-width: 768px){.page-container{padding:var(--spacing-md)}.page-title{font-size:1.875rem}.card{padding:var(--spacing-lg)}}body{margin:0;font-family:var(--font-sans);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--bg-secondary);overflow-x:hidden;color:var(--text-primary)}*{box-sizing:border-box}button,a,select,input{min-height:44px;min-width:44px}html{-webkit-text-size-adjust:100%}.page-navigation{display:flex;gap:15px;justify-content:center;flex-wrap:wrap;padding:10px}@media (max-width: 768px){.page-navigation{gap:8px;padding:5px}.page-navigation .nav-button{padding:8px 12px!important;font-size:14px!important}button[style*=left-handed],button[style*=right-handed]{min-width:auto!important}}@media (max-width: 480px){.page-navigation{gap:6px}.page-navigation .nav-button{padding:6px 10px!important;font-size:13px!important}.page-navigation{flex-direction:column}.page-navigation .nav-button{width:100%;text-align:center}}