@tailwind base;@tailwind components;@tailwind utilities;:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:dark;color:#e5e7eb;background-color:#111827;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;-webkit-text-size-adjust:100%}body{margin:0;min-height:100vh;background-color:#111827;color:#e5e7eb}html{scroll-behavior:smooth}.keyboard-sticky{position:sticky;top:4rem;z-index:100;background:#111827f2;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid rgba(55,65,81,.8);box-shadow:0 20px 25px -5px #0000004d,0 10px 10px -5px #0000001a;border-radius:1rem;margin-bottom:2rem}.key{stroke:#9ca3af;stroke-width:1px;transition:all .2s ease}.key.white{fill:#fff}.key.black{fill:#374151}.key.highlight-tonic{fill:#3b82f6}.key.highlight-note{fill:#10b981}.key.highlight-scale{fill:#8b5cf6}.key:hover{filter:brightness(.9);cursor:pointer}.content-card{background:linear-gradient(145deg,#1f2937,#111827);border:1px solid #374151;border-radius:1rem;padding:2rem;margin-bottom:2rem;box-shadow:0 10px 15px -3px #0000004d,0 4px 6px -2px #00000026;transition:all .3s ease}.content-card:hover{transform:translateY(-2px);box-shadow:0 20px 25px -5px #0006,0 10px 10px -5px #0003}.btn-play{background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;padding:.75rem 1.5rem;border-radius:.75rem;cursor:pointer;transition:all .2s ease;font-weight:600;border:none;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f;font-size:.875rem}.btn-play:hover{background:linear-gradient(135deg,#2563eb,#1d4ed8);transform:translateY(-1px);box-shadow:0 8px 12px -2px #00000026,0 4px 6px -1px #0000001a}.btn-play:active{transform:translateY(0)}.chord-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:1.5rem;margin-top:1.5rem}.nav-sticky{position:sticky;top:0;z-index:200;background:#111827e6;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid rgba(55,65,81,.8)}.nav-link{padding:.5rem 1rem;border-radius:.5rem;transition:all .2s ease;font-weight:500}.nav-link:hover{background:#3b82f633;color:#e5e7eb}.section-spacing{margin-bottom:4rem}.section-spacing:last-child{margin-bottom:2rem}.header-gradient{background:linear-gradient(135deg,#0f172a,#1e293b,#334155);border-bottom:1px solid rgba(55,65,81,.8);position:relative;overflow:hidden}.header-gradient:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at 50% 50%,rgba(59,130,246,.2) 0%,transparent 70%);pointer-events:none}.header-gradient:after{content:"";position:absolute;top:-50%;left:-50%;right:-50%;bottom:-50%;background:linear-gradient(45deg,transparent,rgba(255,255,255,.1),transparent);animation:shimmer 8s ease-in-out infinite;pointer-events:none}@keyframes shimmer{0%,to{transform:translate(-100%) translateY(-100%) rotate(45deg)}50%{transform:translate(100%) translateY(100%) rotate(45deg)}}.header-button{background:linear-gradient(135deg,#3b82f6,#1d4ed8);color:#fff;padding:1rem 2.5rem;border-radius:2rem;font-weight:600;font-size:1.1rem;border:none;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 15px #3b82f64d;position:relative;overflow:hidden}.header-button:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .5s}.header-button:hover:before{left:100%}.header-button:hover{background:linear-gradient(135deg,#2563eb,#1e40af);transform:translateY(-2px);box-shadow:0 8px 25px #3b82f666}.header-button:active{transform:translateY(0)}.header-button-secondary{background:#3b82f61a;color:#1d4ed8;padding:1rem 2.5rem;border-radius:2rem;font-weight:600;font-size:1.1rem;border:1px solid rgba(59,130,246,.2);cursor:pointer;transition:all .3s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);position:relative;overflow:hidden}.header-button-secondary:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(59,130,246,.1),transparent);transition:left .5s}.header-button-secondary:hover:before{left:100%}.header-button-secondary:hover{background:#3b82f633;border-color:#3b82f64d;transform:translateY(-2px)}section{scroll-margin-top:12rem}@media (max-width: 768px){.content-card{padding:1.5rem;margin-bottom:1.5rem}.chord-grid{grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:1rem}.keyboard-sticky{top:3rem;margin-bottom:1.5rem}section{scroll-margin-top:10rem}.header-button,.header-button-secondary{padding:.875rem 2rem;font-size:1rem}}@media (max-width: 640px){.chord-grid{grid-template-columns:repeat(auto-fill,minmax(100px,1fr));gap:.75rem}.header-button,.header-button-secondary{padding:.75rem 1.5rem;font-size:.875rem}.keyboard-container{width:auto;max-width:calc(100vw - 1rem);padding:.75rem}#piano{width:100%;height:auto;max-height:100px}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeInUp .6s ease-out}#piano{filter:drop-shadow(0 4px 6px rgba(0,0,0,.1));max-height:140px;height:auto}.btn-play:focus{outline:2px solid #3b82f6;outline-offset:2px}.keyboard-container{background:#1f293780;border-radius:.75rem;padding:1rem;border:1px solid rgba(55,65,81,.5);width:638px;max-width:calc(100vw - 2rem);margin:0 auto}