:root{--bg-primary: #0f0f0f;--bg-secondary: #1a1a1a;--bg-tertiary: #242424;--bg-elevated: #2a2a2a;--text-primary: #f5f5f5;--text-secondary: #a0a0a0;--text-muted: #666666;--accent-primary: #f59e0b;--accent-secondary: #d97706;--accent-glow: rgba(245, 158, 11, .15);--success: #22c55e;--warning: #eab308;--danger: #ef4444;--border-color: #333333;--border-hover: #444444;--font-sans: "Outfit", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--transition-fast: .15s ease;--transition-normal: .25s ease}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%}body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased}#root{min-height:100%}.app-loading{height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg-primary)}.spinner{width:40px;height:40px;border:3px solid var(--border-color);border-top-color:var(--accent-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;font-family:var(--font-sans);font-size:14px;font-weight:500;border:none;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);text-decoration:none}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));color:#000;box-shadow:0 2px 12px var(--accent-glow)}.btn-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 20px var(--accent-glow)}.btn-ghost{background:transparent;color:var(--text-secondary);border:1px solid var(--border-color)}.btn-ghost:hover:not(:disabled){background:var(--bg-tertiary);color:var(--text-primary);border-color:var(--border-hover)}.btn-danger{background:transparent;color:var(--danger);border:1px solid transparent}.btn-danger:hover:not(:disabled){background:#ef44441a}.btn-small{padding:6px 12px;font-size:13px}.btn-close{background:none;border:none;color:var(--text-muted);font-size:24px;cursor:pointer;padding:0;line-height:1;transition:color var(--transition-fast)}.btn-close:hover{color:var(--text-primary)}.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;background:radial-gradient(ellipse at top,rgba(245,158,11,.08) 0%,transparent 50%),var(--bg-primary)}.auth-card{width:100%;max-width:400px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:40px;box-shadow:0 25px 50px -12px #00000080}.auth-header{text-align:center;margin-bottom:32px}.auth-icon{font-size:48px;display:block;margin-bottom:16px;filter:drop-shadow(0 0 20px var(--accent-glow))}.auth-header h1{font-size:24px;font-weight:600;margin-bottom:4px;background:linear-gradient(135deg,var(--text-primary),var(--accent-primary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.auth-header p{color:var(--text-muted);font-size:14px}.auth-form{display:flex;flex-direction:column;gap:20px}.auth-form .btn{margin-top:8px;padding:14px}.auth-toggle{margin-top:20px;text-align:center}.btn-link{background:none;border:none;color:var(--accent-primary);font-family:var(--font-sans);font-size:14px;cursor:pointer;padding:0;transition:color var(--transition-fast)}.btn-link:hover{color:var(--accent-secondary);text-decoration:underline}.success-message{padding:12px;background:#22c55e1a;border:1px solid rgba(34,197,94,.3);border-radius:var(--radius-md);color:var(--success);font-size:13px}.form-group{display:flex;flex-direction:column;gap:8px}.form-group label{font-size:13px;font-weight:500;color:var(--text-secondary)}.form-group input,.form-group select,.form-group textarea{width:100%;padding:12px 14px;font-family:var(--font-sans);font-size:14px;color:var(--text-primary);background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);transition:all var(--transition-fast)}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px var(--accent-glow)}.form-group input::placeholder,.form-group textarea::placeholder{color:var(--text-muted)}.form-group textarea{resize:vertical;font-family:var(--font-mono);font-size:13px}.form-group select{cursor:pointer;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg 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10px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;background:var(--accent-glow);color:var(--accent-primary);border-radius:20px}.admin-main{flex:1;padding:32px;max-width:1400px;margin:0 auto;width:100%}.toolbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.toolbar h2{font-size:20px;font-weight:600}.error-banner{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:#ef44441a;border:1px solid rgba(239,68,68,.3);border-radius:var(--radius-md);color:var(--danger);font-size:14px;margin-bottom:24px}.error-banner button{background:none;border:none;color:var(--danger);font-size:18px;cursor:pointer;padding:0 4px}.loading-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:80px 20px;color:var(--text-muted)}.loading-state p{margin-top:16px;font-size:14px}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:80px 20px;background:var(--bg-secondary);border:1px dashed var(--border-color);border-radius:var(--radius-lg)}.empty-icon{font-size:48px;margin-bottom:16px;opacity:.5}.empty-state p{color:var(--text-muted);font-size:15px}.melody-list{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);overflow:hidden}.melody-list table{width:100%;border-collapse:collapse}.melody-list th,.melody-list td{padding:14px 16px;text-align:left}.melody-list th{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);background:var(--bg-tertiary);border-bottom:1px solid var(--border-color)}.melody-list td{font-size:14px;border-bottom:1px solid var(--border-color);color:var(--text-secondary)}.melody-list tr:last-child td{border-bottom:none}.melody-list tr:hover td{background:var(--bg-tertiary)}.title-cell .melody-title{color:var(--text-primary);font-weight:500}.categories-cell{max-width:200px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.actions-cell{display:flex;gap:8px}.badge{display:inline-flex;align-items:center;padding:4px 10px;font-size:11px;font-weight:600;border-radius:20px;text-transform:capitalize}.badge-easy{background:#22c55e26;color:var(--success)}.badge-medium{background:#eab30826;color:var(--warning)}.badge-hard{background:#ef444426;color:var(--danger)}.badge-premium{background:linear-gradient(135deg,#f59e0b33,#d9770633);color:var(--accent-primary)}.badge-free{background:var(--bg-tertiary);color:var(--text-muted)}.form-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;padding:20px;z-index:200;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.form-modal{width:100%;max-width:600px;max-height:90vh;overflow-y:auto;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);box-shadow:0 25px 50px -12px #00000080;animation:slideUp .3s ease}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.form-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--border-color)}.form-header h2{font-size:18px;font-weight:600}.form-modal form{padding:24px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.form-group-full{grid-column:1 / -1}.form-actions{display:flex;justify-content:flex-end;gap:12px;margin-top:24px;padding-top:24px;border-top:1px solid var(--border-color)}.category-selector{display:flex;flex-wrap:wrap;gap:8px}.no-categories{color:var(--text-muted);font-size:13px;font-style:italic}.category-chip{display:inline-flex;align-items:center;cursor:pointer}.category-chip input{position:absolute;opacity:0;pointer-events:none}.category-chip span{padding:6px 14px;font-size:13px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:20px;transition:all var(--transition-fast)}.category-chip:hover span{border-color:var(--border-hover)}.category-chip input:checked+span{background:var(--accent-glow);border-color:var(--accent-primary);color:var(--accent-primary)}.premium-toggle{display:flex;align-items:center;gap:12px;cursor:pointer;padding:16px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);transition:all var(--transition-fast)}.premium-toggle:hover{border-color:var(--border-hover)}.premium-toggle input{position:absolute;opacity:0;pointer-events:none}.toggle-track{position:relative;width:44px;height:24px;background:var(--bg-elevated);border-radius:12px;transition:background var(--transition-fast);flex-shrink:0}.toggle-thumb{position:absolute;top:2px;left:2px;width:20px;height:20px;background:var(--text-muted);border-radius:50%;transition:all var(--transition-fast)}.premium-toggle input:checked+.toggle-track{background:var(--accent-primary)}.premium-toggle input:checked+.toggle-track .toggle-thumb{left:22px;background:#000}.toggle-label{font-size:14px;color:var(--text-primary);display:flex;align-items:center;gap:8px}.premium-star{color:var(--accent-primary);animation:pulse 1.5s ease infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.csv-upload-modal{max-width:700px}.csv-upload-content{padding:24px}.csv-dropzone{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:48px 24px;border:2px dashed var(--border-color);border-radius:var(--radius-lg);background:var(--bg-tertiary);cursor:pointer;transition:all var(--transition-fast)}.csv-dropzone:hover,.csv-dropzone.drag-active{border-color:var(--accent-primary);background:var(--accent-glow)}.csv-dropzone.has-file{padding:24px}.dropzone-icon{font-size:48px;margin-bottom:16px;opacity:.7}.dropzone-text{font-size:15px;color:var(--text-secondary);margin-bottom:8px}.dropzone-text span{color:var(--accent-primary);text-decoration:underline}.dropzone-hint{font-size:12px;color:var(--text-muted)}.file-info{display:flex;align-items:center;gap:12px;padding:12px 16px;background:var(--bg-elevated);border-radius:var(--radius-md);width:100%}.file-icon{font-size:24px}.file-name{flex:1;font-size:14px;color:var(--text-primary);font-weight:500}.file-remove{background:none;border:none;color:var(--text-muted);font-size:20px;cursor:pointer;padding:4px 8px;border-radius:var(--radius-sm);transition:all var(--transition-fast)}.file-remove:hover{background:#ef44441a;color:var(--danger)}.csv-preview{margin-top:24px}.csv-preview h4{font-size:14px;font-weight:600;color:var(--text-secondary);margin-bottom:12px}.preview-table-container{overflow-x:auto;border:1px solid var(--border-color);border-radius:var(--radius-md)}.preview-table{width:100%;border-collapse:collapse;font-size:13px}.preview-table th,.preview-table td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--border-color)}.preview-table th{background:var(--bg-tertiary);font-weight:600;color:var(--text-muted);font-size:11px;text-transform:uppercase;letter-spacing:.5px}.preview-table tr:last-child td{border-bottom:none}.preview-table tr:hover td{background:var(--bg-tertiary)}.preview-title{color:var(--text-primary);font-weight:500}.preview-tabs{font-family:var(--font-mono);font-size:12px;color:var(--text-muted)}.preview-categories{font-size:12px;color:var(--text-muted)}.preview-more{margin-top:12px;font-size:13px;color:var(--text-muted);text-align:center}.validation-summary{display:flex;align-items:center;gap:10px;margin-top:20px;padding:14px 18px;border-radius:var(--radius-md);font-size:14px;font-weight:500}.validation-summary.valid{background:#22c55e1a;border:1px solid rgba(34,197,94,.3);color:var(--success)}.validation-summary.invalid{background:#ef44441a;border:1px solid rgba(239,68,68,.3);color:var(--danger)}.validation-icon{font-size:18px;font-weight:700}.warning-count{color:var(--warning);font-weight:400;font-size:13px}.csv-errors{margin-top:20px;padding:16px;background:#ef444414;border:1px solid rgba(239,68,68,.2);border-radius:var(--radius-md)}.csv-errors h4{font-size:13px;font-weight:600;color:var(--danger);margin-bottom:12px}.csv-errors ul{list-style:none;display:flex;flex-direction:column;gap:6px}.csv-errors li{font-size:13px;color:var(--text-secondary)}.csv-errors li strong{color:var(--text-primary)}.csv-errors .more-errors{color:var(--text-muted);font-style:italic}.csv-warnings{margin-top:16px;padding:16px;background:#eab30814;border:1px solid rgba(234,179,8,.2);border-radius:var(--radius-md)}.csv-warnings h4{font-size:13px;font-weight:600;color:var(--warning);margin-bottom:12px}.csv-warnings ul{list-style:none;display:flex;flex-direction:column;gap:6px}.csv-warnings li{font-size:13px;color:var(--text-secondary)}.csv-warnings li strong{color:var(--text-primary)}.csv-warnings .more-errors{color:var(--text-muted);font-style:italic}.csv-results{text-align:center}.results-summary{padding:32px;border-radius:var(--radius-lg);margin-bottom:24px}.results-summary.success{background:#22c55e1a}.results-summary.partial{background:#eab3081a}.results-icon{font-size:48px;display:block;margin-bottom:16px}.results-summary h3{font-size:18px;font-weight:600;color:var(--text-primary)}.results-stats{display:flex;justify-content:center;gap:32px;margin-bottom:24px}.stat{display:flex;flex-direction:column;align-items:center;gap:4px}.stat-value{font-size:32px;font-weight:700}.stat-label{font-size:12px;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted)}.stat-success .stat-value{color:var(--success)}.stat-failed .stat-value{color:var(--danger)}.stat-total .stat-value{color:var(--text-secondary)}.toolbar-buttons{display:flex;gap:12px}@media (max-width: 768px){.admin-header{padding:12px 16px}.header-left h1{display:none}.admin-main{padding:16px}.toolbar{flex-direction:column;gap:16px;align-items:stretch}.toolbar-buttons{flex-direction:column}.melody-list{overflow-x:auto}.melody-list table{min-width:700px}.form-grid{grid-template-columns:1fr}.form-modal{max-height:100vh;border-radius:0}.results-stats{gap:16px}.stat-value{font-size:24px}}