.ai-fab{position:fixed;bottom:2rem;right:2rem;width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,var(--ai-primary, var(--color-primary, #3b82f6)),var(--ai-secondary, #8b5cf6));color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 20px var(--ai-shadow, rgba(59, 130, 246, .4));z-index:9999;transition:box-shadow .3s ease;padding:0}.ai-fab:hover{box-shadow:0 6px 28px var(--ai-shadow, rgba(59, 130, 246, .6))}.ai-fab.open{background:linear-gradient(135deg,#ef4444,#dc2626);box-shadow:0 4px 20px #ef444466}.ai-fab:before{content:"";position:absolute;width:100%;height:100%;border-radius:50%;border:2px solid var(--ai-primary, var(--color-primary, #3b82f6));animation:ai-pulse 2s ease-out infinite;pointer-events:none}.ai-fab.open:before{display:none}@keyframes ai-pulse{0%{transform:scale(1);opacity:.6}to{transform:scale(1.6);opacity:0}}.ai-chat-window{position:fixed;bottom:6rem;right:2rem;width:380px;height:500px;display:flex;flex-direction:column;background:var(--ai-bg, rgba(15, 23, 42, .95));backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border:1px solid var(--ai-border, rgba(59, 130, 246, .2));border-radius:20px;box-shadow:0 8px 40px #00000080;z-index:9998;overflow:hidden}.ai-chat-header{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.2rem;background:color-mix(in srgb,var(--ai-primary, #3b82f6) 8%,transparent);border-bottom:1px solid var(--ai-border, rgba(59, 130, 246, .15))}.ai-chat-header-left{display:flex;align-items:center;gap:.6rem}.ai-chat-header-icon{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--ai-primary, var(--color-primary, #3b82f6)),var(--ai-secondary, #8b5cf6));display:flex;align-items:center;justify-content:center;font-size:.9rem}.ai-chat-title{font-size:.95rem;font-weight:700;color:var(--ai-text, var(--color-text, #e2e8f0))}.ai-chat-subtitle{font-size:.7rem;color:var(--ai-text-dim, var(--color-text-dim, #94a3b8))}.ai-chat-messages{flex:1;overflow-y:auto;padding:1rem;display:flex;flex-direction:column;gap:.8rem}.ai-chat-messages::-webkit-scrollbar{width:4px}.ai-chat-messages::-webkit-scrollbar-thumb{background:color-mix(in srgb,var(--ai-primary, #3b82f6) 30%,transparent);border-radius:2px}.ai-message-row{display:flex}.ai-message-row.user{justify-content:flex-end}.ai-message-row.model{justify-content:flex-start}.ai-message{max-width:85%;padding:.7rem 1rem;border-radius:16px;font-size:.88rem;line-height:1.6;word-break:break-word;white-space:pre-wrap}.ai-message.user{background:linear-gradient(135deg,var(--ai-primary, var(--color-primary, #3b82f6)),color-mix(in srgb,var(--ai-primary, #3b82f6) 80%,#000));color:#fff;border-bottom-right-radius:4px}.ai-message.model{background:var(--ai-bg-surface, rgba(255, 255, 255, .08));color:var(--ai-text, var(--color-text, #e2e8f0));border-bottom-left-radius:4px}.ai-message strong{color:#fff;font-weight:700}.ai-welcome{display:flex;justify-content:center;padding:.5rem 0}.ai-welcome-hints{display:flex;flex-direction:column;gap:.4rem}.ai-hint-chip{background:color-mix(in srgb,var(--ai-primary, #3b82f6) 10%,transparent);border:1px solid color-mix(in srgb,var(--ai-primary, #3b82f6) 20%,transparent);padding:.5rem .8rem;border-radius:20px;font-size:.78rem;color:var(--ai-primary, var(--color-primary, #3b82f6));cursor:pointer;transition:background .2s;text-align:left}.ai-hint-chip:hover{background:color-mix(in srgb,var(--ai-primary, #3b82f6) 20%,transparent)}.ai-typing{background:var(--ai-bg-surface, rgba(255, 255, 255, .05));border-radius:16px 16px 16px 4px;padding:.7rem 1rem;display:flex;align-items:center;gap:.5rem}.ai-typing-spinner{color:var(--ai-primary, var(--color-primary, #3b82f6));animation:ai-spin 1s linear infinite}@keyframes ai-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.ai-typing-text{font-size:.75rem;color:var(--ai-text-dim, var(--color-text-dim, #94a3b8))}.ai-chat-input-area{padding:.8rem 1rem;border-top:1px solid var(--ai-border, rgba(59, 130, 246, .15));background:#0003}.ai-input-wrapper{position:relative}.ai-chat-input{width:100%;background:var(--ai-bg-surface, rgba(255, 255, 255, .05));border:1px solid var(--ai-border, rgba(255, 255, 255, .1));padding:.75rem 3rem .75rem 1rem;border-radius:12px;color:var(--ai-text, var(--color-text, #e2e8f0));font-size:.88rem;outline:none;font-family:inherit;transition:border-color .2s,box-shadow .2s;box-sizing:border-box}.ai-chat-input:focus{border-color:color-mix(in srgb,var(--ai-primary, #3b82f6) 50%,transparent);box-shadow:0 0 0 2px color-mix(in srgb,var(--ai-primary, #3b82f6) 10%,transparent)}.ai-chat-input::placeholder{color:var(--ai-text-dim, rgba(255, 255, 255, .3))}.ai-send-btn{position:absolute;right:.5rem;top:50%;transform:translateY(-50%);width:32px;height:32px;border-radius:8px;background:color-mix(in srgb,var(--ai-primary, #3b82f6) 15%,transparent);color:var(--ai-primary, var(--color-primary, #3b82f6));border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;padding:0;transition:background .2s,color .2s}.ai-send-btn:hover{background:var(--ai-primary, var(--color-primary, #3b82f6));color:#fff}.ai-send-btn:disabled{opacity:.4;cursor:not-allowed}@media (max-width: 480px){.ai-chat-window{right:.5rem;left:.5rem;bottom:5rem;width:auto;height:420px}.ai-fab{bottom:1rem;right:1rem}}:root{--color-bg-primary: #0a0a0f;--color-bg-secondary: #12121a;--color-bg-tertiary: #1a1a24;--color-bg-card: #1e1e2a;--color-bg-hover: #252532;--color-c: #ff6b6b;--color-g: #ffa94d;--color-d: #ffd43b;--color-a: #69db7c;--color-e: #38d9a9;--color-b: #4dabf7;--color-fsharp: #748ffc;--color-csharp: #9775fa;--color-gsharp: #da77f2;--color-dsharp: #f783ac;--color-asharp: #ff8787;--color-f: #ff6b6b;--color-accent-primary: #667eea;--color-accent-secondary: #764ba2;--color-accent-gradient: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));--color-text-primary: #f0f0f5;--color-text-secondary: #a0a0b0;--color-text-muted: #606070;--color-success: #69db7c;--color-warning: #ffd43b;--color-error: #ff6b6b;--color-info: #4dabf7;--font-display: "Playfair Display", Georgia, serif;--font-body: "Noto Sans JP", -apple-system, BlinkMacSystemFont, sans-serif;--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--space-3xl: 4rem;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-full: 9999px;--shadow-sm: 0 2px 4px rgba(0, 0, 0, .3);--shadow-md: 0 4px 12px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .5);--shadow-glow: 0 0 20px rgba(102, 126, 234, .3);--transition-fast: .15s ease;--transition-base: .25s ease;--transition-slow: .4s ease;--z-dropdown: 100;--z-modal: 200;--z-tooltip: 300}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth}body{font-family:var(--font-body);background:var(--color-bg-primary);color:var(--color-text-primary);line-height:1.6;min-height:100vh;overflow-x:hidden}body:before{content:"";position:fixed;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at 20% 80%,rgba(102,126,234,.08) 0%,transparent 50%),radial-gradient(circle at 80% 20%,rgba(118,75,162,.08) 0%,transparent 50%);pointer-events:none;z-index:-1}#root{min-height:100vh;display:flex;flex-direction:column}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:600;line-height:1.3;color:var(--color-text-primary)}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.5rem}h4{font-size:1.25rem}p{color:var(--color-text-secondary);max-width:65ch}a{color:var(--color-accent-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-accent-secondary)}.app-container{display:flex;min-height:100vh}.sidebar{width:280px;background:var(--color-bg-secondary);border-right:1px solid rgba(255,255,255,.05);padding:var(--space-lg);display:flex;flex-direction:column;position:fixed;top:0;left:0;height:100vh;z-index:10}.sidebar-logo{display:flex;align-items:center;gap:var(--space-md);padding-bottom:var(--space-lg);border-bottom:1px solid rgba(255,255,255,.05);margin-bottom:var(--space-lg)}.sidebar-logo img{width:40px;height:40px}.sidebar-logo h1{font-size:1.25rem;background:var(--color-accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.sidebar-nav{flex:1;display:flex;flex-direction:column;gap:var(--space-xs)}.nav-link{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-md) var(--space-md);border-radius:var(--radius-md);color:var(--color-text-secondary);transition:all var(--transition-fast);font-size:.95rem}.nav-link:hover{background:var(--color-bg-hover);color:var(--color-text-primary)}.nav-link.active{background:#667eea26;color:var(--color-accent-primary)}.nav-link .icon{font-size:1.25rem;width:24px;text-align:center}.main-content{flex:1;margin-left:280px;padding:var(--space-2xl)}.card{background:var(--color-bg-card);border-radius:var(--radius-lg);padding:var(--space-xl);border:1px solid rgba(255,255,255,.05);transition:all var(--transition-base)}.card:hover{border-color:#667eea4d;box-shadow:var(--shadow-glow)}.card-header{display:flex;align-items:center;gap:var(--space-md);margin-bottom:var(--space-lg)}.card-icon{width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:var(--color-accent-gradient);border-radius:var(--radius-md);font-size:1.5rem}.card-title{font-size:1.25rem}.card-description{color:var(--color-text-secondary);font-size:.9rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-md) var(--space-xl);border:none;border-radius:var(--radius-md);font-family:var(--font-body);font-size:.95rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast)}.btn-primary{background:var(--color-accent-gradient);color:#fff}.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-glow)}.btn-secondary{background:var(--color-bg-tertiary);color:var(--color-text-primary);border:1px solid rgba(255,255,255,.1)}.btn-secondary:hover{background:var(--color-bg-hover);border-color:#fff3}.form-control,.form-select{background:var(--color-bg-tertiary);color:var(--color-text-primary);border:1px solid rgba(255,255,255,.1);padding:var(--space-md);border-radius:var(--radius-md);font-family:var(--font-body);font-size:1rem;transition:all var(--transition-fast);cursor:pointer}.form-control:focus,.form-select:focus{outline:none;border-color:var(--color-accent-primary);box-shadow:0 0 0 2px #667eea33}.form-select{-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");background-repeat:no-repeat;background-position:right .7rem center;background-size:1em;padding-right:2.5rem}.page-header{margin-bottom:var(--space-2xl)}.page-title{font-size:2rem;margin-bottom:var(--space-sm)}.page-subtitle{color:var(--color-text-secondary);font-size:1.1rem}.grid{display:grid;gap:var(--space-lg)}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-auto{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}.visualizer-container{background:var(--color-bg-secondary);border-radius:var(--radius-lg);overflow:hidden;position:relative}.visualizer-canvas{width:100%;height:100%;display:block}.piano{display:flex;position:relative;height:180px;background:var(--color-bg-tertiary);border-radius:var(--radius-lg);padding:var(--space-md);overflow:hidden}.piano-key{position:relative;cursor:pointer;transition:all var(--transition-fast)}.piano-key.white{width:50px;height:160px;background:linear-gradient(to bottom,#fff,#e8e8e8);border:1px solid #ccc;border-radius:0 0 var(--radius-sm) var(--radius-sm);z-index:1}.piano-key.white:hover{background:linear-gradient(to bottom,#f8f8f8,#ddd)}.piano-key.white.active{background:linear-gradient(to bottom,#ddd,#ccc);transform:translateY(2px)}.piano-key.black{width:32px;height:100px;background:linear-gradient(to bottom,#333,#000);border-radius:0 0 var(--radius-sm) var(--radius-sm);margin-left:-16px;margin-right:-16px;z-index:2}.piano-key.black:hover{background:linear-gradient(to bottom,#444,#111)}.piano-key.black.active{background:linear-gradient(to bottom,#222,#000);height:95px}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.7}}@keyframes glow{0%,to{box-shadow:0 0 5px #667eea4d}50%{box-shadow:0 0 20px #667eea99}}.fade-in{animation:fadeIn .5s ease forwards}.mic-error-banner{display:flex;align-items:center;justify-content:space-between;gap:var(--space-md);padding:var(--space-md) var(--space-xl);margin-bottom:var(--space-lg);background:#ff6b6b1f;border:1px solid rgba(255,107,107,.35);border-radius:var(--radius-lg);color:var(--color-error);font-size:.95rem;font-weight:500;line-height:1.5}.mic-error-dismiss{background:none;border:none;color:var(--color-error);font-size:1.1rem;cursor:pointer;padding:var(--space-xs) var(--space-sm);border-radius:var(--radius-sm);opacity:.7;transition:opacity var(--transition-fast);flex-shrink:0}.mic-error-dismiss:hover{opacity:1}@media (max-width: 1024px){.sidebar{width:240px}.main-content{margin-left:240px}.grid-3{grid-template-columns:repeat(2,1fr)}}@media (max-width: 768px){.sidebar{transform:translate(-100%);transition:transform var(--transition-base)}.sidebar.open{transform:translate(0)}.main-content{margin-left:0;padding:var(--space-lg)}.grid-2,.grid-3{grid-template-columns:1fr}}