:root{--bg-primary: #0f0f0f;--bg-secondary: #1a1a1a;--bg-tertiary: #2d2d2d;--text-primary: #ffffff;--text-secondary: #a0a0a0;--text-muted: #666666;--accent-primary: #673AB7;--accent-primary-hover: #5E35B1;--accent-secondary: #9C27B0;--border-primary: #2d2d2d;--border-secondary: #404040;--success: #22c55e;--warning: #f59e0b;--error: #ef4444;--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, "Courier New", monospace;--radius-sm: .25rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem}*,*:before,*:after{box-sizing:border-box}*{margin:0}html,body{height:100%}body{line-height:1.5;-webkit-font-smoothing:antialiased;font-family:var(--font-family);background-color:var(--bg-primary);color:var(--text-primary)}img,picture,video,canvas,svg{display:block;max-width:100%}input,button,textarea,select{font:inherit}p,h1,h2,h3,h4,h5,h6{overflow-wrap:break-word}h1,h2,h3,h4,h5,h6{color:var(--text-primary);font-weight:600;line-height:1.2}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.5rem}h4{font-size:1.25rem}h5{font-size:1.125rem}h6{font-size:1rem}p{color:var(--text-secondary)}.container{max-width:1200px;margin:0 auto;padding:0 var(--space-md)}.surface{background-color:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:var(--radius-lg)}.card{background-color:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:var(--radius-lg);padding:var(--space-lg)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:var(--space-sm) var(--space-lg);border:none;border-radius:var(--radius-md);font-weight:500;text-decoration:none;cursor:pointer;transition:all .2s ease;gap:var(--space-sm)}.btn-primary{background-color:var(--accent-primary);color:#fff}.btn-primary:hover{background-color:var(--accent-primary-hover)}.btn-secondary{background-color:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-secondary)}.btn-secondary:hover{background-color:var(--border-secondary)}.btn-ghost{background-color:transparent;color:var(--text-secondary)}.btn-ghost:hover{background-color:var(--bg-tertiary);color:var(--text-primary)}.text-primary{color:var(--text-primary)}.text-secondary{color:var(--text-secondary)}.text-muted{color:var(--text-muted)}.text-accent{color:var(--accent-primary)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-sm{gap:var(--space-sm)}.gap-md{gap:var(--space-md)}.gap-lg{gap:var(--space-lg)}.p-sm{padding:var(--space-sm)}.p-md{padding:var(--space-md)}.p-lg{padding:var(--space-lg)}.p-xl{padding:var(--space-xl)}.m-sm{margin:var(--space-sm)}.m-md{margin:var(--space-md)}.m-lg{margin:var(--space-lg)}.m-xl{margin:var(--space-xl)}.mb-sm{margin-bottom:var(--space-sm)}.mb-md{margin-bottom:var(--space-md)}.mb-lg{margin-bottom:var(--space-lg)}.mb-xl{margin-bottom:var(--space-xl)}.loading{color:var(--text-muted);font-style:italic}.modal-backdrop.svelte-boigzw{position:fixed;top:0;left:0;right:0;bottom:0;background-color:#0009;display:flex;align-items:center;justify-content:center;z-index:1000;padding:var(--space-lg);overflow-y:auto}.modal-content.svelte-boigzw{background-color:var(--bg-primary);border-radius:var(--radius-lg);box-shadow:0 20px 25px -5px #0000001a,0 10px 10px -5px #0000000a;max-width:500px;width:100%;max-height:90vh;overflow-y:auto;position:relative}.modal-header.svelte-boigzw{display:flex;justify-content:space-between;align-items:center;padding:var(--space-lg);border-bottom:1px solid var(--border-secondary);gap:var(--space-md)}.modal-controls.svelte-boigzw{display:flex;align-items:center;gap:var(--space-md);flex-shrink:0}#tonic-modal-title.svelte-boigzw{margin:0;font-size:1.125rem;font-weight:600;color:var(--text-primary);text-overflow:ellipsis;overflow:hidden;white-space:nowrap;flex:1;margin-right:var(--space-md)}.close-button.svelte-boigzw{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border:none;background-color:var(--bg-tertiary);color:var(--text-secondary);border-radius:50%;cursor:pointer;transition:all .2s ease}.close-button.svelte-boigzw:hover{background-color:var(--bg-secondary);color:var(--text-primary)}.modal-body.svelte-boigzw{padding:var(--space-lg)}.tonic-selector.svelte-boigzw{display:flex;flex-direction:column;gap:var(--space-lg)}.piano-layout.svelte-boigzw{display:grid;grid-template-columns:repeat(12,1fr);gap:2px;background-color:var(--border-primary);padding:var(--space-sm);border-radius:var(--radius-md)}.piano-key.svelte-boigzw{border:none;border-radius:4px;cursor:pointer;transition:all .2s ease;position:relative;min-height:60px;display:flex;align-items:end;justify-content:center;padding:var(--space-xs)}.piano-key.natural.svelte-boigzw{background-color:#fff;border:1px solid #ddd}.piano-key.sharp.svelte-boigzw{background-color:#333;border:1px solid #222}.piano-key.natural.selected.svelte-boigzw,.piano-key.sharp.selected.svelte-boigzw{background-color:var(--accent-primary);border-color:var(--accent-primary)}.piano-key.svelte-boigzw:hover{transform:translateY(-2px);box-shadow:0 4px 8px #0003}.note-label.svelte-boigzw{font-weight:600;font-size:.8em;color:inherit}.piano-key.natural.svelte-boigzw .note-label:where(.svelte-boigzw){color:#333}.piano-key.sharp.svelte-boigzw .note-label:where(.svelte-boigzw){color:#fff}.piano-key.selected.svelte-boigzw .note-label:where(.svelte-boigzw){color:#fff}.current-selection.svelte-boigzw{display:flex;align-items:center;justify-content:center;gap:var(--space-sm);text-align:center;padding:var(--space-md);background-color:var(--bg-secondary);border-radius:var(--radius-md)}.selection-label.svelte-boigzw{font-weight:500;color:var(--text-secondary)}.selected-note.svelte-boigzw{font-weight:700;font-size:1.25rem;color:var(--accent-primary)}.drone-controls.svelte-boigzw{display:flex;justify-content:center}.drone-button.svelte-boigzw{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-lg);border:none;border-radius:var(--radius-md);background-color:var(--accent-primary);color:#fff;font-weight:600;cursor:pointer;transition:all .2s ease}.drone-button.svelte-boigzw:hover{background-color:var(--accent-primary-hover);transform:translateY(-1px);box-shadow:0 4px 12px #673ab74d}.drone-button.playing.svelte-boigzw{background-color:#dc2626}.drone-button.playing.svelte-boigzw:hover{background-color:#b91c1c}@media (max-width: 768px){.modal-backdrop.svelte-boigzw{padding:var(--space-md)}.piano-layout.svelte-boigzw{grid-template-columns:repeat(6,1fr)}.piano-key.svelte-boigzw{min-height:50px}.note-label.svelte-boigzw{font-size:.7em}.modal-content.svelte-boigzw{max-height:95vh}}@media (max-width: 480px){.piano-layout.svelte-boigzw{grid-template-columns:repeat(4,1fr)}.piano-key.svelte-boigzw{min-height:45px}#tonic-modal-title.svelte-boigzw{font-size:1.25rem}.drone-button.svelte-boigzw{padding:var(--space-sm) var(--space-md);font-size:.9rem}.modal-header.svelte-boigzw{flex-direction:column;align-items:flex-start;gap:var(--space-sm)}.modal-controls.svelte-boigzw{align-self:stretch;justify-content:space-between}}.header.svelte-dns4uq{background-color:var(--bg-secondary);border-bottom:1px solid var(--border-primary);position:sticky;top:0;z-index:50;transition:all .3s ease-in-out;width:100%}.header-content.svelte-dns4uq{display:flex;align-items:center;justify-content:space-between;height:5.95rem;transition:height .3s ease-in-out}.header.compact.svelte-dns4uq .header-content:where(.svelte-dns4uq){height:3rem;justify-content:flex-end}.nav.svelte-dns4uq{display:flex;align-items:center;gap:var(--space-lg)}.nav-link.svelte-dns4uq{color:var(--text-secondary);text-decoration:none;font-weight:500;padding:var(--space-sm) var(--space-md);transition:all .2s ease;display:flex;align-items:center;gap:var(--space-xs)}.header.compact.svelte-dns4uq .nav-link:where(.svelte-dns4uq){padding:var(--space-xs) var(--space-sm);font-size:.875rem}.nav-link.svelte-dns4uq:hover{color:var(--text-primary);background-color:var(--bg-tertiary);border-radius:var(--radius-md)}.nav-link.active.svelte-dns4uq{color:var(--accent-primary)}.nav-button.svelte-dns4uq{color:var(--text-secondary);background:none;border:none;font-weight:500;padding:var(--space-sm) var(--space-md);border-radius:var(--radius-md);transition:all .2s ease;display:flex;align-items:center;gap:var(--space-xs);cursor:pointer;font-size:inherit;font-family:inherit}.header.compact.svelte-dns4uq .nav-button:where(.svelte-dns4uq){padding:var(--space-xs) var(--space-sm);font-size:.875rem}.nav-button.svelte-dns4uq:hover{color:var(--text-primary);background-color:var(--bg-tertiary)}.nav-button.active.svelte-dns4uq{color:var(--accent-primary);background-color:var(--bg-tertiary)}.nav-button.tonic-button.svelte-dns4uq{color:var(--accent-primary);border:1px solid var(--accent-primary);background-color:transparent}.nav-button.tonic-button.svelte-dns4uq:hover{color:#fff;background-color:var(--accent-primary);border-color:var(--accent-primary)}.user-menu.svelte-dns4uq{position:relative}.avatar-button.svelte-dns4uq{display:flex;align-items:center;gap:var(--space-xs);background:none;border:none;cursor:pointer;padding:var(--space-xs);border-radius:var(--radius-md);transition:all .2s ease}.avatar-button.svelte-dns4uq:hover{background-color:var(--bg-tertiary)}.avatar.svelte-dns4uq{width:2.5rem;height:2.5rem;border-radius:50%;border:2px solid var(--border-secondary)}.avatar-placeholder.svelte-dns4uq{width:2.5rem;height:2.5rem;border-radius:50%;background-color:var(--accent-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:1rem;border:2px solid var(--border-secondary)}.dropdown-icon.svelte-dns4uq{color:var(--text-secondary);transition:transform .2s ease}.dropdown-icon.open.svelte-dns4uq{transform:rotate(180deg)}.dropdown-menu.svelte-dns4uq{position:absolute;top:100%;right:0;margin-top:var(--space-xs);background-color:var(--bg-primary);border:1px solid var(--border-primary);border-radius:var(--radius-md);box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f;min-width:220px;z-index:100}.dropdown-header.svelte-dns4uq{padding:var(--space-md);border-bottom:1px solid var(--border-secondary)}.user-name.svelte-dns4uq{font-weight:600;color:var(--text-primary);margin:0 0 var(--space-xs) 0;font-size:.875rem}.user-email.svelte-dns4uq{color:var(--text-secondary);margin:0;font-size:.75rem}.dropdown-item.svelte-dns4uq{display:flex;align-items:center;gap:var(--space-sm);width:100%;padding:var(--space-sm) var(--space-md);background:none;border:none;color:var(--text-secondary);cursor:pointer;transition:all .2s ease;font-size:.875rem;text-decoration:none;font-family:inherit}.dropdown-item.svelte-dns4uq:hover{background-color:var(--bg-tertiary);color:var(--text-primary)}.dropdown-item.locked.svelte-dns4uq{cursor:not-allowed;opacity:.6;justify-content:space-between}.dropdown-item.locked.svelte-dns4uq:hover{background-color:transparent;color:var(--text-secondary)}.locked-badge.svelte-dns4uq{background-color:var(--accent-primary);color:#fff;font-size:.625rem;font-weight:600;padding:.125rem .375rem;border-radius:var(--radius-sm);text-transform:uppercase;letter-spacing:.025em}.dropdown-item.upgrade-item.svelte-dns4uq{background:linear-gradient(135deg,#5e35b1,#673ab7);color:#fff;font-weight:600;margin:0;border-radius:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;border-top:1px solid rgba(255,255,255,.1);border-bottom:1px solid rgba(255,255,255,.1)}.dropdown-item.upgrade-item.svelte-dns4uq:hover{background:linear-gradient(135deg,#4a148c,#5e35b1);color:#fff;transform:translateY(-1px);box-shadow:0 4px 12px #673ab74d}.dropdown-item.account-toggle.svelte-dns4uq{justify-content:space-between}.toggle-icon.svelte-dns4uq{color:var(--text-secondary);transition:transform .2s ease}.toggle-icon.open.svelte-dns4uq{transform:rotate(180deg)}.sub-menu.svelte-dns4uq{margin-left:var(--space-md);border-left:2px solid var(--border-secondary)}.dropdown-item.sub-item.svelte-dns4uq{padding-left:var(--space-md);font-size:.8125rem;opacity:.9}.dropdown-item.sub-item.svelte-dns4uq:hover{opacity:1;background-color:var(--bg-tertiary)}.auth-buttons.svelte-dns4uq{display:flex;align-items:center;gap:var(--space-sm)}.auth-link.svelte-dns4uq{padding:var(--space-sm) var(--space-md);border-radius:var(--radius-md);font-size:.875rem;font-weight:500;text-decoration:none;transition:all .2s ease;border:none;cursor:pointer;font-family:inherit}.auth-link.signin.svelte-dns4uq{color:var(--text-primary);background-color:transparent;border:1px solid var(--border-secondary)}.auth-link.signin.svelte-dns4uq:hover{background-color:var(--bg-tertiary);border-color:var(--accent-primary);color:var(--accent-primary)}.auth-link.register.svelte-dns4uq{color:#fff;background-color:var(--accent-primary);border:1px solid var(--accent-primary)}.desktop-nav.svelte-dns4uq{display:flex}.mobile-nav.svelte-dns4uq{display:none;align-items:center;gap:var(--space-sm)}.mobile-menu-button.svelte-dns4uq{display:flex;align-items:center;justify-content:center;background:none;border:none;color:var(--text-secondary);cursor:pointer;padding:var(--space-sm);border-radius:var(--radius-md);transition:all .2s ease;min-width:44px;min-height:44px;position:relative}.mobile-menu-button.svelte-dns4uq svg{pointer-events:none}.mobile-menu-button.svelte-dns4uq:hover,.mobile-menu-button.svelte-dns4uq:focus{color:var(--text-primary);background-color:var(--bg-tertiary);outline:none}.mobile-menu-button.svelte-dns4uq:focus-visible{outline:2px solid var(--accent-primary);outline-offset:2px}.mobile-avatar.svelte-dns4uq{padding:var(--space-xs)}.avatar.small.svelte-dns4uq,.avatar-placeholder.small.svelte-dns4uq{width:2rem;height:2rem;font-size:.875rem}.mobile-menu.svelte-dns4uq{background-color:var(--bg-secondary);border-top:1px solid var(--border-primary);padding:var(--space-md) 0}.mobile-menu-nav.svelte-dns4uq{display:flex;flex-direction:column;gap:var(--space-xs)}.mobile-nav-link.svelte-dns4uq,.mobile-nav-button.svelte-dns4uq{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-md) var(--space-lg);color:var(--text-secondary);text-decoration:none;font-weight:500;transition:all .2s ease;border:none;background:none;width:100%;text-align:left;font-size:1rem;font-family:inherit;cursor:pointer;min-height:44px}.mobile-nav-link.svelte-dns4uq:hover,.mobile-nav-button.svelte-dns4uq:hover,.mobile-nav-link.svelte-dns4uq:focus,.mobile-nav-button.svelte-dns4uq:focus{background-color:var(--bg-tertiary);color:var(--text-primary);outline:none}.mobile-nav-link.svelte-dns4uq:focus-visible,.mobile-nav-button.svelte-dns4uq:focus-visible{outline:2px solid var(--accent-primary);outline-offset:-2px}.mobile-nav-link.active.svelte-dns4uq,.mobile-nav-button.active.svelte-dns4uq{color:var(--accent-primary);background-color:var(--bg-tertiary)}.mobile-nav-button.tonic-button.svelte-dns4uq{color:var(--accent-primary);border:1px solid var(--accent-primary);background-color:transparent;border-radius:var(--radius-md);padding:var(--space-sm) var(--space-md);margin:var(--space-md) var(--space-lg);width:auto;min-height:auto;align-self:flex-start}.mobile-nav-button.tonic-button.svelte-dns4uq:hover{color:#fff;background-color:var(--accent-primary);border-color:var(--accent-primary)}@media (max-width: 768px){.desktop-nav.svelte-dns4uq{display:none}.mobile-nav.svelte-dns4uq{display:flex}.header-content.svelte-dns4uq{height:5rem}}@media (max-width: 480px){.header-content.svelte-dns4uq{height:4.5rem}.mobile-menu.svelte-dns4uq{padding:var(--space-sm) 0}.mobile-nav-link.svelte-dns4uq,.mobile-nav-button.svelte-dns4uq{padding:var(--space-sm) var(--space-md);font-size:.9rem}.mobile-nav-button.tonic-button.svelte-dns4uq{padding:var(--space-xs) var(--space-sm);font-size:.875rem;margin:var(--space-sm) var(--space-md)}}.mobile-auth-section.svelte-dns4uq{display:flex;flex-direction:column;gap:var(--space-sm);padding:var(--space-md) 0;margin-top:var(--space-md);border-top:1px solid var(--border-secondary)}.mobile-auth-link.svelte-dns4uq{display:block;width:100%;padding:var(--space-md);border-radius:var(--radius-md);font-size:.9375rem;font-weight:500;text-decoration:none;text-align:center;transition:all .2s ease;border:1px solid var(--border-secondary);color:var(--text-primary);background-color:transparent;cursor:pointer;font-family:inherit}.mobile-auth-link.svelte-dns4uq:hover{background-color:var(--bg-tertiary)}.mobile-auth-link.primary.svelte-dns4uq{color:#fff;background-color:var(--accent-primary);border-color:var(--accent-primary)}.modal-backdrop.svelte-rsayrq{position:fixed;top:0;left:0;right:0;bottom:0;background-color:#0009;display:flex;align-items:center;justify-content:center;z-index:1000;padding:var(--space-lg);overflow-y:auto}.modal-content.svelte-rsayrq{background-color:var(--bg-primary);border-radius:var(--radius-lg);box-shadow:0 20px 25px -5px #0000001a,0 10px 10px -5px #0000000a;max-width:900px;width:100%;max-height:90vh;overflow-y:auto;position:relative}.modal-header.svelte-rsayrq{display:flex;justify-content:flex-end;padding:var(--space-lg) var(--space-lg) 0 var(--space-lg)}.close-button.svelte-rsayrq{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border:none;background-color:var(--bg-tertiary);color:var(--text-secondary);border-radius:50%;cursor:pointer;transition:all .2s ease}.close-button.svelte-rsayrq:hover{background-color:var(--bg-secondary);color:var(--text-primary)}.modal-body.svelte-rsayrq{padding:0 var(--space-lg) var(--space-lg) var(--space-lg)}.hero-section.svelte-rsayrq{text-align:center;margin-bottom:var(--space-xl)}.hero-icon.svelte-rsayrq{display:flex;align-items:center;justify-content:center;width:64px;height:64px;background-color:var(--accent-primary);color:#fff;border-radius:50%;margin:0 auto var(--space-md) auto}#upgrade-title.svelte-rsayrq{font-size:2rem;font-weight:700;color:var(--text-primary);margin:0 0 var(--space-sm) 0;line-height:1.2}.hero-description.svelte-rsayrq{font-size:1.125rem;color:var(--text-secondary);margin:0;line-height:1.5}.pricing-grid.svelte-rsayrq{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:var(--space-xl);max-width:800px;margin:0 auto var(--space-xl)}.pricing-card.svelte-rsayrq{background-color:var(--bg-secondary);border:2px solid var(--border-primary);border-radius:var(--radius-lg);padding:var(--space-xl);position:relative;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}.pricing-card.svelte-rsayrq:hover{transform:translateY(-4px);box-shadow:0 10px 30px #0000004d}.pricing-card.featured.svelte-rsayrq{border-color:var(--accent-primary);box-shadow:0 0 0 1px 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