:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box;margin:0;padding:0}html,body{margin:0;padding:0;width:100%;height:100%;overflow:hidden}body{background:#fff}#app{width:100%;height:100%;overflow:hidden}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}h1{font-size:3.2em;line-height:1.1}.logo{height:6em;padding:1.5em;will-change:filter;transition:filter .3s}.logo:hover{filter:drop-shadow(0 0 2em #646cffaa)}.logo.vanilla:hover{filter:drop-shadow(0 0 2em #f7df1eaa)}.card{padding:2em}.read-the-docs{color:#888}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}.landing-container{width:100%;min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#f0f4ff,#fff);padding:2rem}.landing-content{max-width:1000px;width:100%;text-align:center;animation:fadeIn .5s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.landing-header{margin-bottom:4rem}.landing-header h1{font-size:3.5rem;color:#2d3748;margin-bottom:1rem;font-weight:700;background:linear-gradient(135deg,#3b82f6,#60a5fa);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.subtitle{font-size:1.25rem;color:#4a5568;max-width:600px;margin:0 auto}.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem;margin-bottom:4rem}.feature-item{padding:2rem;background:#fff;border-radius:16px;box-shadow:0 4px 12px #00000008;transition:transform .2s,box-shadow .2s}.feature-item:hover{transform:translateY(-5px);box-shadow:0 6px 12px #0000001a}.feature-item i{font-size:2rem;color:#3b82f6;margin-bottom:1rem}.feature-item h3{font-size:1.25rem;color:#2d3748;margin-bottom:.5rem}.feature-item p{color:#4a5568;line-height:1.5}.auth-section{margin-top:2rem}.login-button{display:inline-flex;align-items:center;gap:.75rem;padding:1rem 2rem;font-size:1.125rem;color:#fff;background:#2563eb;border:none;border-radius:12px;cursor:pointer;transition:all .2s;box-shadow:0 4px 6px #2563eb33}.login-button:hover{background:#1d4ed8;transform:translateY(-2px);box-shadow:0 6px 12px #2563eb4d}.login-button i{font-size:1.25rem}.auth-note{margin-top:1rem;color:#6b7280;font-size:.875rem}.corner-logo{position:fixed;top:1.5rem;right:1.5rem;width:80px;height:auto;z-index:10;animation:fadeIn .5s ease-out;opacity:.9}@media (max-width: 768px){.landing-header h1{font-size:2.5rem}.subtitle{font-size:1.125rem}.features{grid-template-columns:1fr;gap:1.5rem}.feature-item{padding:1.5rem}.corner-logo{width:60px;top:1rem;right:1rem}}@media (prefers-color-scheme: dark){.landing-container{background:linear-gradient(135deg,#1e293b,#334155)}.landing-header h1{background:linear-gradient(135deg,#60a5fa,#93c5fd);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.subtitle{color:#e2e8f0}.feature-item{background:#2d3748}.feature-item h3{color:#e2e8f0}.feature-item p{color:#cbd5e1}.auth-note{color:#9ca3af}}.chat-container.modern{width:100%;height:100vh;margin:0;display:flex;flex-direction:column;background:#fff;position:fixed;top:0;left:0;right:0;bottom:0}.chat-header{padding:1rem 2rem;background:#fff;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #eaeef3;height:64px}.header-left{display:flex;align-items:center;gap:1rem}.chat-header h2{font-size:1.5rem;color:#2d3748;margin:0;font-weight:600}.user-info{display:flex;align-items:center;gap:.5rem;padding-left:1rem;border-left:1px solid #eaeef3}.user-avatar{width:32px;height:32px;border-radius:50%;object-fit:cover}.user-name{color:#4a5568;font-size:.9rem}.logout-button{display:flex;align-items:center;gap:.5rem;padding:.5rem 1rem;border:none;background:#f3f4f6;color:#4b5563;border-radius:8px;cursor:pointer;transition:all .2s}.logout-button:hover{background:#e5e7eb}.chat-box{flex:1;display:flex;flex-direction:column;padding:1.5rem 2rem;gap:1.5rem;overflow:hidden;background:#f5f7fb;height:calc(100vh - 64px)}.messages-container{flex:1;overflow-y:auto;padding-right:.5rem;display:flex;flex-direction:column;gap:1rem}.message-wrapper{display:flex;margin:.5rem 0}.user-wrapper{justify-content:flex-end}.message{max-width:70%}.message-header{display:flex;justify-content:flex-end;margin-bottom:.25rem}.message-timestamp{font-size:.75rem;color:#6b7280}.bubble{padding:1rem;border-radius:18px;position:relative;word-wrap:break-word;transition:all .2s}.user-message .bubble{background:#2563eb;color:#fff;border-bottom-right-radius:4px;margin-left:auto}.ai-message .bubble{background:#fff;color:#1f2937;border-bottom-left-radius:4px;box-shadow:0 2px 4px #0000000d}.bubble.editing{background:#f8fafc;border:2px solid #2563eb;padding:calc(1rem - 2px)}.message-images{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:.5rem}.message-image{max-width:200px;border-radius:12px;box-shadow:0 2px 4px #0000001a;transition:transform .2s}.message-image:hover{transform:scale(1.05)}.input-section{display:flex;flex-direction:column;gap:1rem;background:#fff;padding:1rem;border-radius:12px;box-shadow:0 2px 4px #0000000d;margin-top:auto}.input-container{display:flex;gap:1rem;align-items:flex-end}.prompt-input{flex:1;border:none;padding:.75rem;border-radius:8px;background:#f3f4f6;resize:none;min-height:24px;max-height:150px;line-height:1.5;transition:all .2s;font-size:1rem}.prompt-input:focus{outline:none;background:#edf2f7;box-shadow:0 0 0 2px #2563eb33}.image-upload-container{position:relative}.image-input{display:none}.image-upload-label{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:8px;background:#f3f4f6;cursor:pointer;transition:all .2s;color:#4b5563}.image-upload-label:hover{background:#e5e7eb;color:#2563eb}.image-preview{display:flex;flex-wrap:wrap;gap:.5rem}.preview-item{position:relative;width:100px;height:100px;border-radius:8px;overflow:hidden;background:#f3f4f6}.preview-item img{width:100%;height:100%;object-fit:cover}.remove-file{position:absolute;top:4px;right:4px;background:#00000080;border:none;border-radius:50%;width:24px;height:24px;display:flex;align-items:center;justify-content:center;color:#fff;cursor:pointer;transition:all .2s}.remove-file:hover{background:#000000b3}.send-button{width:40px;height:40px;border:none;border-radius:8px;background:#2563eb;color:#fff;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center}.send-button:hover:not(:disabled){background:#1d4ed8;transform:translateY(-1px)}.send-button:disabled{background:#93c5fd;cursor:not-allowed}.action-button{padding:.5rem;border:none;background:transparent;color:#6b7280;cursor:pointer;border-radius:4px;transition:all .2s}.action-button:hover{background:#f3f4f6;color:#4b5563}.edit-controls{display:flex;gap:.5rem;margin-top:.5rem}.confirm-edit{color:#059669}.confirm-edit:hover{background:#ecfdf5}.cancel-edit{color:#dc2626}.cancel-edit:hover{background:#fef2f2}.loading-spinner{width:20px;height:20px;border:2px solid #ffffff;border-top:2px solid transparent;border-radius:50%;animation:spin 1s linear infinite}.messages-container::-webkit-scrollbar{width:6px}.messages-container::-webkit-scrollbar-track{background:#f1f1f1;border-radius:3px}.messages-container::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:3px}.messages-container::-webkit-scrollbar-thumb:hover{background:#94a3b8}html,body,#app{margin:0;padding:0;height:100%;width:100%;overflow:hidden}.generate-music-button{display:flex;align-items:center;gap:.5rem;margin-top:1rem;padding:.75rem 1.5rem;background:#2563eb;color:#fff;border:none;border-radius:8px;cursor:pointer;transition:all .2s;font-size:1rem;width:100%;justify-content:center}.generate-music-button:hover:not(:disabled){background:#1d4ed8;transform:translateY(-1px)}.generate-music-button:disabled{background:#93c5fd;cursor:not-allowed}.generating-status{display:flex;align-items:center;gap:.75rem;margin-top:1rem;padding:.75rem;background:#f3f4f6;border-radius:8px;color:#4b5563}.music-response{display:flex;flex-direction:column;align-items:flex-start;gap:.75rem;margin-top:1rem;padding:.75rem;background:#ecfdf5;border-radius:8px;color:#059669}.music-response>span{display:flex;align-items:center;gap:.5rem}.error-message{display:flex;align-items:center;gap:.75rem;margin-top:1rem;padding:.75rem;background:#fef2f2;border-radius:8px;color:#dc2626}.loading-spinner{width:20px;height:20px;border:2px solid currentColor;border-top:2px solid transparent;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.prompt-display{position:relative;padding-right:2rem}.edit-prompt-button{position:absolute;top:.5rem;right:.5rem;padding:.25rem;background:transparent;border:none;color:#6b7280;cursor:pointer;opacity:0;transition:opacity .2s}.prompt-display:hover .edit-prompt-button{opacity:1}.edit-prompt-container{width:100%}.edit-prompt-input{width:100%;min-height:100px;padding:.75rem;border:2px solid #2563eb;border-radius:8px;background:#fff;font-size:1rem;line-height:1.5;resize:vertical;margin-bottom:.5rem}.edit-prompt-input:focus{outline:none;border-color:#3b82f6;box-shadow:0 0 0 2px #2563eb33}.edit-controls{display:flex;gap:.5rem;justify-content:flex-end}.download-button{display:inline-flex;align-items:center;gap:.5rem;margin-top:1rem;padding:.75rem 1.5rem;background:#059669;color:#fff;border:none;border-radius:8px;cursor:pointer;transition:all .2s;text-decoration:none;font-size:1rem}.download-button:hover{background:#047857;transform:translateY(-1px)}.download-button i{font-size:1.1rem}.music-actions{display:flex;flex-direction:column;gap:.75rem;margin-top:1rem}.download-button.previous{background:#4b5563}.download-button.previous:hover{background:#374151}.generate-music-button i.fa-sync{margin-right:.5rem}.download-buttons{display:flex;flex-direction:column;gap:.75rem;width:100%}.download-button.sheet-music{background:#7c3aed}.download-button.sheet-music:hover{background:#6d28d9}.download-button.previous.sheet-music{background:#6b21a8}.download-button.previous.sheet-music:hover{background:#581c87}.download-button i.fa-file-pdf,.download-button i.fa-music{margin-right:.5rem}.music-preview{display:flex;flex-direction:column;gap:.75rem;width:100%}.audio-player{width:100%;height:40px;border-radius:8px;background:#f3f4f6}.audio-player::-webkit-media-controls-panel{background-color:#f3f4f6;border-radius:8px}.audio-player::-webkit-media-controls-play-button,.audio-player::-webkit-media-controls-pause-button{color:#2563eb}.audio-player::-webkit-media-controls-current-time-display,.audio-player::-webkit-media-controls-time-remaining-display{color:#4b5563}.audio-player::-webkit-media-controls-timeline{background-color:#e5e7eb;border-radius:4px;height:4px}.audio-player::-webkit-media-controls-volume-slider{background-color:#e5e7eb;border-radius:4px;height:4px}@media (prefers-color-scheme: dark){.audio-player{background:#1f2937}.audio-player::-webkit-media-controls-panel{background-color:#1f2937}.audio-player::-webkit-media-controls-current-time-display,.audio-player::-webkit-media-controls-time-remaining-display{color:#e5e7eb}.audio-player::-webkit-media-controls-timeline,.audio-player::-webkit-media-controls-volume-slider{background-color:#374151}}