:root{--color-primary: #667eea;--color-primary-dark: #764ba2;--color-bg-dark: #1a1a2e;--color-bg-light: #16213e;--color-text: #ffffff;--color-text-muted: rgba(255, 255, 255, .5);--color-text-secondary: rgba(255, 255, 255, .7);--color-border: rgba(255, 255, 255, .2);--color-border-light: rgba(255, 255, 255, .1);--color-success: #00c853;--color-error: #ff5252;--gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);--gradient-bg: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-bg-light) 100%);--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--spacing-xxl: 40px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .1);--shadow-md: 0 4px 16px rgba(0, 0, 0, .2);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .3);--shadow-primary: 0 4px 20px rgba(102, 126, 234, .4);--transition-fast: .15s ease;--transition-normal: .2s ease;--transition-slow: .3s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background:var(--gradient-bg);min-height:100vh;color:var(--color-text);line-height:1.5}.app{min-height:100vh}h1{font-size:2rem;font-weight:700}h2{font-size:1.5rem;font-weight:600}h3{font-size:1.25rem;font-weight:600}.btn{padding:var(--spacing-md) var(--spacing-lg);border:none;border-radius:var(--radius-md);font-size:1rem;font-weight:600;cursor:pointer;transition:all var(--transition-normal);display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);text-decoration:none}.btn-primary{background:var(--gradient-primary);color:#fff}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-primary)}.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-danger{background:linear-gradient(135deg,#ef4444,#dc2626);color:#fff}.btn-danger:hover{transform:translateY(-2px);box-shadow:0 8px 20px #ef44444d}.btn-secondary{background:#ffffff1a;color:#fff;border:1px solid var(--color-border)}.btn-secondary:hover:not(:disabled){background:#fff3}.btn-full{width:100%}.card{background:#ffffff0d;border-radius:var(--radius-xl);padding:var(--spacing-lg);border:1px solid var(--color-border-light)}.card-title{margin-bottom:var(--spacing-md);color:var(--color-text)}input[type=text],input[type=number],textarea{width:100%;padding:var(--spacing-md);border:1px solid var(--color-border);border-radius:var(--radius-md);background:#ffffff0d;color:#fff;font-size:1rem;transition:border-color var(--transition-fast)}input[type=text]:focus,input[type=number]:focus,textarea:focus{outline:none;border-color:var(--color-primary)}.form-label{display:block;margin-bottom:var(--spacing-sm);color:var(--color-text-secondary);font-size:.875rem}.form-select{width:100%;padding:var(--spacing-md);border-radius:var(--radius-md);background:#ffffff1a;border:1px solid var(--color-border);color:#fff;font-size:1rem;cursor:pointer}.form-select option{background:var(--color-bg-dark);color:#fff}.progress-bar{width:100%;height:8px;background:#ffffff1a;border-radius:var(--radius-sm);overflow:hidden}.progress-bar-fill{height:100%;background:var(--gradient-primary);transition:width var(--transition-slow)}.dropzone{border:2px dashed rgba(255,255,255,.3);border-radius:var(--radius-lg);padding:var(--spacing-xxl);text-align:center;cursor:pointer;transition:all var(--transition-normal)}.dropzone:hover,.dropzone.active{border-color:var(--color-primary);background:#667eea1a}.dropzone-icon{font-size:2rem;margin-bottom:var(--spacing-sm)}.dropzone-hint{font-size:.75rem;color:var(--color-text-muted);margin-top:var(--spacing-sm)}.editor-container{padding:var(--spacing-xxl);max-width:1200px;margin:0 auto}.editor-header{margin-bottom:var(--spacing-xl);display:flex;justify-content:space-between;align-items:flex-start}.editor-title{font-size:1.75rem;margin-top:var(--spacing-sm)}.editor-status{color:var(--color-text-muted);margin-top:var(--spacing-xs)}.storage-usage{color:var(--color-primary);font-size:.8em}.editor-loading,.editor-error{padding:var(--spacing-xxl);text-align:center}.editor-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--spacing-lg);margin-bottom:var(--spacing-lg)}@media (max-width: 768px){.editor-grid{grid-template-columns:1fr}}.music-info{padding:var(--spacing-lg);background:#667eea33;border-radius:var(--radius-md)}.music-filename{font-weight:500}.music-meta{margin-top:var(--spacing-sm);color:var(--color-primary)}.analyze-section{margin-top:var(--spacing-md)}.analyze-section .form-select{margin-bottom:var(--spacing-md)}.reupload-notice{margin-bottom:var(--spacing-md);padding:var(--spacing-md);background:#ffc1071a;border:1px solid rgba(255,193,7,.3);border-radius:var(--radius-md)}.notice-text{color:#ffc107;font-size:.875rem;margin-bottom:var(--spacing-sm)}.dropzone-small{padding:var(--spacing-md);font-size:.875rem}.dropzone-small p{margin:0}.client-toggle{margin-bottom:var(--spacing-md)}.toggle-label{display:flex;align-items:center;gap:var(--spacing-sm);cursor:pointer;font-size:.875rem;color:var(--color-text-secondary)}.toggle-label input[type=checkbox]{width:18px;height:18px;accent-color:var(--color-primary);cursor:pointer}.toggle-label span{flex:1}.image-grid{margin-top:var(--spacing-md);display:grid;grid-template-columns:repeat(4,1fr);gap:var(--spacing-sm)}@media (max-width: 768px){.image-grid{grid-template-columns:repeat(3,1fr)}}.image-item{position:relative;aspect-ratio:1;border-radius:var(--radius-md);overflow:hidden;background:#0000004d}.image-thumbnail{width:100%;height:100%;object-fit:cover}.image-delete{position:absolute;top:var(--spacing-xs);right:var(--spacing-xs);width:20px;height:20px;border-radius:50%;border:none;background:var(--color-error);color:#fff;cursor:pointer;font-size:.75rem;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity var(--transition-fast)}.image-item:hover .image-delete{opacity:1}.image-order{position:absolute;bottom:var(--spacing-xs);left:var(--spacing-xs);background:#000000b3;padding:2px 6px;border-radius:var(--radius-sm);font-size:.75rem}.drag-hint{font-size:.8rem;color:var(--color-text-muted);margin-top:var(--spacing-md);text-align:center}.image-item{cursor:grab;transition:transform var(--transition-fast),box-shadow var(--transition-fast),border var(--transition-fast);border:2px solid transparent}.image-item:active{cursor:grabbing}.image-item.dragging{opacity:.5;transform:scale(.95)}.image-item.drag-over{border-color:var(--color-primary);box-shadow:0 0 12px #667eea80;transform:scale(1.05)}.analysis-card{margin-bottom:var(--spacing-lg)}.analysis-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--spacing-md)}@media (max-width: 768px){.analysis-grid{grid-template-columns:repeat(2,1fr)}}.analysis-item{text-align:center}.analysis-label{color:var(--color-text-muted);font-size:.875rem}.analysis-value{font-size:1.5rem;color:var(--color-primary);font-weight:600}.generate-card{margin-bottom:var(--spacing-lg)}.job-progress{margin-bottom:var(--spacing-md)}.job-message{margin-bottom:var(--spacing-sm)}.job-percent{margin-top:var(--spacing-sm);font-size:.875rem;color:var(--color-text-muted)}.job-complete{margin-bottom:var(--spacing-md);padding:var(--spacing-lg);background:#00c8531a;border-radius:var(--radius-md);text-align:center}.job-complete .btn{margin-top:var(--spacing-md)}.job-failed{margin-bottom:var(--spacing-md);padding:var(--spacing-lg);background:#ff52521a;border-radius:var(--radius-md)}.generate-hint{margin-top:var(--spacing-sm);color:var(--color-text-muted);font-size:.875rem}.energy-timeline{margin-top:var(--spacing-lg)}.energy-timeline-label{font-size:.875rem;color:var(--color-text-secondary);margin-bottom:var(--spacing-sm)}.energy-canvas{width:100%;height:100px;border-radius:var(--radius-md);background:#0000004d}.segment-legend{display:flex;gap:var(--spacing-sm);margin-top:var(--spacing-sm);flex-wrap:wrap}.segment-tag{padding:2px 8px;border-radius:var(--radius-sm);font-size:.7rem;text-transform:uppercase;font-weight:600}.segment-intro,.segment-outro{background:#667eea33;color:var(--color-primary)}.segment-verse{background:#ffffff1a;color:var(--color-text-secondary)}.segment-chorus{background:#ff525233;color:var(--color-error)}.segment-bridge{background:#00c85333;color:var(--color-success)}.preset-card{margin-bottom:var(--spacing-lg)}.preset-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--spacing-sm);margin-bottom:var(--spacing-md)}@media (max-width: 768px){.preset-grid{grid-template-columns:repeat(2,1fr)}}.preset-item{background:#ffffff0d;border:2px solid var(--color-border-light);border-radius:var(--radius-md);padding:var(--spacing-md);cursor:pointer;transition:all var(--transition-normal);text-align:left;color:var(--color-text);display:flex;flex-direction:column;gap:var(--spacing-xs)}.preset-item:hover{border-color:var(--color-border);background:#ffffff14}.preset-item.active{border-color:var(--color-primary);background:#667eea26;box-shadow:0 0 12px #667eea33}.preset-name{font-weight:600;font-size:1rem}.preset-desc{font-size:.75rem;color:var(--color-text-muted);line-height:1.3}.color-grade-section{margin-top:var(--spacing-md)}.home-container{padding:var(--spacing-xxl);max-width:1200px;margin:0 auto}.home-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-xl)}.home-title{font-size:2rem}.project-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:var(--spacing-lg)}.project-card{cursor:pointer;transition:transform var(--transition-normal),box-shadow var(--transition-normal)}.project-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.project-card-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:var(--spacing-md)}.project-card-title{font-size:1.25rem}.project-card-delete{background:transparent;border:none;color:var(--color-text-muted);cursor:pointer;padding:var(--spacing-xs);font-size:1.25rem;transition:color var(--transition-fast)}.project-card-delete:hover{color:var(--color-error)}.project-card-meta{display:flex;gap:var(--spacing-md);color:var(--color-text-muted);font-size:.875rem}.project-card-status{display:inline-block;padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-sm);font-size:.75rem;text-transform:uppercase;margin-top:var(--spacing-md)}.project-card-status.draft{background:#ffffff1a}.project-card-status.ready{background:#667eea33;color:var(--color-primary)}.project-card-status.completed{background:#00c85333;color:var(--color-success)}.project-card-status.failed{background:#ff525233;color:var(--color-error)}.create-container{padding:var(--spacing-xxl);max-width:600px;margin:0 auto}.create-form{margin-top:var(--spacing-xl)}.form-group{margin-bottom:var(--spacing-lg)}.form-group:last-of-type{margin-bottom:var(--spacing-xl)}.empty-state{text-align:center;padding:var(--spacing-xxl);color:var(--color-text-muted)}.empty-state-icon{font-size:3rem;margin-bottom:var(--spacing-md)}.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:var(--spacing-lg);background:var(--gradient-bg);position:relative;overflow:hidden}.auth-container:before{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at 30% 30%,rgba(102,126,234,.15) 0%,transparent 50%),radial-gradient(circle at 70% 70%,rgba(118,75,162,.15) 0%,transparent 50%);animation:float 20s ease-in-out infinite}@keyframes float{0%,to{transform:translate(0) rotate(0)}50%{transform:translate(30px,30px) rotate(5deg)}}.auth-card{position:relative;width:100%;max-width:420px;background:#ffffff08;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-radius:var(--radius-xl);padding:var(--spacing-xxl);border:1px solid rgba(255,255,255,.1);box-shadow:0 25px 50px -12px #00000080}.auth-card h1{text-align:center;font-size:2rem;font-weight:700;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:var(--spacing-xs)}.auth-subtitle{text-align:center;color:var(--color-text-secondary);font-size:1rem;margin-bottom:var(--spacing-xl)}.auth-card .form-group{margin-bottom:var(--spacing-lg)}.auth-card .form-group label{display:block;margin-bottom:var(--spacing-sm);color:var(--color-text-secondary);font-size:.875rem;font-weight:500}.auth-card input[type=email],.auth-card input[type=password],.auth-card input[type=text]{width:100%;padding:var(--spacing-md) var(--spacing-lg);border:1px solid rgba(255,255,255,.15);border-radius:var(--radius-md);background:#ffffff0d;color:#fff;font-size:1rem;transition:all var(--transition-normal)}.auth-card input::placeholder{color:#ffffff4d}.auth-card input:focus{outline:none;border-color:var(--color-primary);background:#667eea1a;box-shadow:0 0 0 3px #667eea33}.auth-card .btn{width:100%;padding:var(--spacing-md) var(--spacing-lg);font-size:1rem;font-weight:600;margin-top:var(--spacing-sm)}.auth-card .btn:disabled{opacity:.6;cursor:not-allowed}.auth-error{background:#ff525226;border:1px solid rgba(255,82,82,.3);color:#ff6b6b;padding:var(--spacing-md);border-radius:var(--radius-md);margin-bottom:var(--spacing-lg);font-size:.875rem;text-align:center}.auth-link{text-align:center;margin-top:var(--spacing-xl);color:var(--color-text-muted);font-size:.9rem}.auth-link a{color:var(--color-primary);text-decoration:none;font-weight:600;transition:color var(--transition-fast)}.auth-link a:hover{color:#8b9cf4;text-decoration:underline}.auth-guest{margin-top:var(--spacing-lg);padding-top:var(--spacing-lg);border-top:1px solid rgba(255,255,255,.1)}.auth-guest p{text-align:center;color:var(--color-text-muted);font-size:.85rem;margin-bottom:var(--spacing-md)}.auth-guest .btn{background:transparent;border:1px solid rgba(255,255,255,.2);color:var(--color-text-secondary)}.auth-guest .btn:hover{background:#ffffff0d;border-color:#ffffff4d}.auth-legal-links{margin-top:var(--spacing-lg);text-align:center;font-size:.8rem;color:var(--color-text-muted)}.auth-legal-links a{color:var(--color-text-muted);text-decoration:none;transition:color var(--transition-fast)}.auth-legal-links a:hover{color:var(--color-primary)}.auth-legal-links span{margin:0 var(--spacing-sm);color:#fff3}.legal-container{min-height:100vh;padding:var(--spacing-xxl);background:var(--gradient-bg)}.legal-card{max-width:800px;margin:0 auto;background:#ffffff08;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:var(--radius-xl);padding:var(--spacing-xxl);border:1px solid rgba(255,255,255,.1)}.legal-back{display:inline-block;color:var(--color-primary);text-decoration:none;margin-bottom:var(--spacing-lg);font-size:.9rem;transition:color var(--transition-fast)}.legal-back:hover{color:#8b9cf4}.legal-card h1{font-size:2rem;margin-bottom:var(--spacing-sm);background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.legal-updated{color:var(--color-text-muted);font-size:.85rem;margin-bottom:var(--spacing-xl)}.legal-card section{margin-bottom:var(--spacing-xl)}.legal-card h2{font-size:1.2rem;color:var(--color-text);margin-bottom:var(--spacing-md);padding-bottom:var(--spacing-sm);border-bottom:1px solid rgba(255,255,255,.1)}.legal-card h3{font-size:1rem;color:var(--color-text-secondary);margin:var(--spacing-md) 0 var(--spacing-sm)}.legal-card p{color:var(--color-text-secondary);line-height:1.7;margin-bottom:var(--spacing-md)}.legal-card ul,.legal-card ol{color:var(--color-text-secondary);line-height:1.7;margin-left:var(--spacing-lg);margin-bottom:var(--spacing-md)}.legal-card li{margin-bottom:var(--spacing-sm)}.legal-card ul ul,.legal-card ol ul{margin-top:var(--spacing-sm);margin-bottom:0}.legal-card strong{color:var(--color-text)}.legal-footer{margin-top:var(--spacing-xxl);padding-top:var(--spacing-lg);border-top:1px solid rgba(255,255,255,.1);text-align:center}.mp4-guide{margin-top:var(--spacing-lg);padding:var(--spacing-md);background:#667eea1a;border:1px solid rgba(102,126,234,.2);border-radius:var(--radius-md);font-size:.85rem}.mp4-guide-title{font-weight:600;color:var(--color-primary);margin-bottom:var(--spacing-sm)}.mp4-guide p{color:var(--color-text-secondary);margin-bottom:var(--spacing-sm);line-height:1.5}.mp4-guide ul{margin:0;padding-left:var(--spacing-lg);color:var(--color-text-muted)}.mp4-guide li{margin-bottom:var(--spacing-xs)}.mp4-guide strong{color:var(--color-text-secondary)}.app-footer{margin-top:var(--spacing-xxl);padding:var(--spacing-xl) var(--spacing-lg);border-top:1px solid rgba(255,255,255,.1);text-align:center;color:var(--color-text-muted);font-size:.85rem}.app-footer p{margin-bottom:var(--spacing-sm)}.footer-links{margin-bottom:var(--spacing-md)}.footer-links a{color:var(--color-text-secondary);text-decoration:none;transition:color var(--transition-fast)}.footer-links a:hover{color:var(--color-primary)}.footer-divider{margin:0 var(--spacing-md);color:#fff3}.footer-copyright{font-size:.75rem;color:#ffffff4d}