:root{--purple: #7C3AED;--purple-dark: #5B21B6;--purple-light: #EDE9FE;--pink: #DB2777;--pink-light: #FCE7F3;--teal: #0891B2;--text: #111827;--text-muted: #6B7280;--bg: #F5F3FF;--white: #FFFFFF;--border: #DDD6FE;--success: #059669;--success-bg: #ECFDF5;--error: #DC2626;--error-bg: #FEF2F2;--warning: #D97706;--warning-bg: #FFFBEB;--gradient: linear-gradient(135deg, #7C3AED 0%, #DB2777 100%);--shadow: 0 4px 20px rgba(124, 58, 237, .18);--shadow-sm: 0 2px 8px rgba(124, 58, 237, .1);--radius: 14px;--radius-sm: 8px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;line-height:1.6;-webkit-font-smoothing:antialiased}h1,h2,h3,h4,h5,h6{font-family:Poppins,sans-serif}a{color:var(--purple)}.page{min-height:100vh;display:flex;flex-direction:column}.page-header{background:var(--gradient);padding:18px 24px 20px;text-align:center;color:#fff;position:relative;overflow:hidden}.page-header:before{content:"♪ ♫ ♪ ♫ ♪ ♫";position:absolute;top:50%;right:16px;transform:translateY(-50%);font-size:18px;opacity:.25;letter-spacing:6px}.page-header .logo{font-family:Poppins,sans-serif;font-size:30px;font-weight:800;letter-spacing:-.5px;display:flex;align-items:center;justify-content:center;gap:10px}.page-header .subtitle{font-size:13px;opacity:.88;margin-top:3px;font-weight:500}.page-content{flex:1;padding:24px 16px;max-width:600px;margin:0 auto;width:100%}.page-content.wide{max-width:1280px}.page-content.full{max-width:100%;padding:16px}.card{background:var(--white);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);border:1.5px solid var(--border);margin-bottom:16px}.card-title{font-family:Poppins,sans-serif;font-size:17px;font-weight:700;color:var(--purple);margin-bottom:18px;display:flex;align-items:center;gap:8px}.form-group{margin-bottom:18px}.form-label{display:block;font-weight:600;font-size:14px;color:var(--text);margin-bottom:6px}.form-label .optional{font-weight:400;color:var(--text-muted);font-size:12px}.mandatory-note{font-size:12px;color:var(--text-muted);margin-bottom:16px}.form-input{width:100%;padding:12px 14px;border:2px solid var(--border);border-radius:var(--radius-sm);font-size:16px;font-family:Inter,sans-serif;color:var(--text);background:var(--white);transition:border-color .2s,box-shadow .2s;outline:none;-webkit-appearance:none;-moz-appearance:none;appearance:none}.form-input:focus{border-color:var(--purple);box-shadow:0 0 0 3px #7c3aed26}.form-input.is-error{border-color:var(--error)}.form-input.is-success{border-color:var(--success)}.form-error{color:var(--error);font-size:13px;margin-top:5px;display:flex;align-items:center;gap:4px}.form-hint{color:var(--text-muted);font-size:12px;margin-top:4px}.radio-group{display:flex;gap:20px;margin-top:8px}.radio-option{display:flex;align-items:center;gap:8px;cursor:pointer;font-weight:500;font-size:15px}.radio-option input[type=radio]{width:18px;height:18px;accent-color:var(--purple);cursor:pointer}.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:12px 24px;border-radius:var(--radius-sm);font-size:16px;font-weight:600;font-family:Inter,sans-serif;cursor:pointer;border:none;transition:all .2s;text-decoration:none;white-space:nowrap;line-height:1}.btn-primary{background:var(--gradient);color:#fff;width:100%}.btn-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 20px #7c3aed73}.btn-primary:disabled{opacity:.45;cursor:not-allowed}.btn-secondary{background:var(--white);color:var(--purple);border:2px solid var(--purple)}.btn-secondary:hover:not(:disabled){background:var(--purple-light)}.btn-ghost{background:transparent;color:var(--purple);border:none}.btn-ghost:hover{background:var(--purple-light);border-radius:var(--radius-sm)}.btn-danger{background:var(--error);color:#fff}.btn-danger:hover:not(:disabled){background:#b91c1c}.btn-sm{padding:7px 14px;font-size:13px;border-radius:6px}.btn-xs{padding:4px 10px;font-size:12px;border-radius:6px}.btn-icon{padding:6px;border-radius:6px;background:transparent;border:none;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;transition:background .15s;font-size:18px;line-height:1}.btn-icon:hover{background:var(--purple-light)}.btn-icon.danger:hover{background:var(--error-bg)}.alert{padding:14px 16px;border-radius:var(--radius-sm);margin-bottom:16px;font-size:15px;display:flex;align-items:flex-start;gap:10px}.alert-success{background:var(--success-bg);color:#065f46;border:1px solid #A7F3D0}.alert-error{background:var(--error-bg);color:#991b1b;border:1px solid #FECACA}.alert-info{background:var(--purple-light);color:#4c1d95;border:1px solid #C4B5FD}.alert-warning{background:var(--warning-bg);color:#92400e;border:1px solid #FCD34D}.badge{display:inline-block;padding:3px 11px;border-radius:20px;font-size:12px;font-weight:700;white-space:nowrap;letter-spacing:.3px}.badge-pending{background:#fef3c7;color:#92400e}.badge-played{background:#d1fae5;color:#065f46}.badge-submitted{background:var(--purple-light);color:#5b21b6}.badge-accepted{background:#cffafe;color:#164e63}.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1.5px solid var(--border)}table{width:100%;border-collapse:collapse;font-size:14px}thead th{background:var(--gradient);color:#fff;padding:12px 14px;text-align:left;font-weight:600;font-family:Poppins,sans-serif;font-size:13px;white-space:nowrap}tbody tr{border-bottom:1px solid var(--border);transition:background .12s}tbody tr:last-child{border-bottom:none}tbody tr:hover{background:#7c3aed0a}tbody td{padding:11px 14px;vertical-align:middle}tbody tr.is-played{opacity:.6}.code-block{background:var(--gradient);color:#fff;font-family:Poppins,sans-serif;font-size:44px;font-weight:800;letter-spacing:12px;text-align:center;padding:22px;border-radius:var(--radius);margin:16px 0;-webkit-user-select:all;user-select:all}.inline-input{border:1.5px solid transparent;padding:4px 8px;border-radius:6px;font-size:14px;font-family:Inter,sans-serif;color:var(--text);background:transparent;width:100%;max-width:160px;transition:all .15s}.inline-input:hover,.inline-input:focus{border-color:var(--border);background:var(--white);outline:none}.inline-input:focus{border-color:var(--purple)}.admin-nav{background:var(--white);border-bottom:2px solid var(--border);padding:0 20px;display:flex;align-items:center;gap:0;overflow-x:auto}.admin-nav .brand{font-family:Poppins,sans-serif;font-weight:800;font-size:18px;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;padding:14px 20px 14px 0;white-space:nowrap}.admin-nav a{padding:14px 16px;text-decoration:none;color:var(--text-muted);font-weight:600;font-size:14px;border-bottom:3px solid transparent;white-space:nowrap;transition:all .15s;display:flex;align-items:center;gap:6px;margin-bottom:-2px}.admin-nav a:hover{color:var(--purple)}.admin-nav a.active{color:var(--purple);border-bottom-color:var(--purple)}.admin-nav .spacer{flex:1}.admin-nav .logout-btn{padding:8px 14px;background:var(--error-bg);color:var(--error);border:1.5px solid #FECACA;border-radius:var(--radius-sm);font-weight:600;font-size:13px;cursor:pointer;white-space:nowrap;transition:all .15s}.admin-nav .logout-btn:hover{background:#fee2e2}.split-panel{display:grid;grid-template-columns:1fr 1.6fr;gap:16px;align-items:start}@media (max-width: 900px){.split-panel{grid-template-columns:1fr}}.panel{background:var(--white);border-radius:var(--radius);border:1.5px solid var(--border);overflow:hidden;display:flex;flex-direction:column}.panel-sticky{position:sticky;top:16px;max-height:calc(100vh - 100px)}.panel-header{padding:14px 18px;background:var(--gradient);color:#fff;font-family:Poppins,sans-serif;font-weight:700;font-size:14px;display:flex;align-items:center;gap:8px;flex-shrink:0}.panel-header .count-badge{background:#ffffff40;border-radius:20px;padding:2px 9px;font-size:13px}.panel-body{flex:1;overflow-y:auto;min-height:100px}.panel-footer{padding:10px 14px;border-top:1px solid var(--border);font-size:12px;color:var(--text-muted);font-style:italic}.song-row{padding:12px 14px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:10px;transition:background .12s}.song-row:last-child{border-bottom:none}.song-row:hover{background:#7c3aed0a}.song-row.is-played{opacity:.55}.song-row .drag-handle{cursor:grab;color:var(--text-muted);font-size:18px;padding:0 2px;flex-shrink:0;-webkit-user-select:none;user-select:none}.song-row .drag-handle:active{cursor:grabbing}.song-info{flex:1;min-width:0}.song-info .title{font-weight:600;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.song-info .artist{font-size:12px;color:var(--text-muted)}.song-info .singer{font-size:12px;color:var(--teal);margin-top:2px}.song-info .duet{font-size:11px;color:var(--pink)}.song-actions{display:flex;gap:4px;flex-shrink:0}.fab{position:fixed;bottom:28px;right:28px;width:58px;height:58px;border-radius:50%;background:var(--gradient);color:#fff;font-size:30px;display:flex;align-items:center;justify-content:center;text-decoration:none;border:none;cursor:pointer;box-shadow:0 6px 24px #7c3aed8c;transition:transform .2s,box-shadow .2s;z-index:200;line-height:1}.fab:hover{transform:scale(1.1);box-shadow:0 8px 30px #7c3aeda6}.spinner{display:inline-block;width:22px;height:22px;border:3px solid rgba(124,58,237,.25);border-top-color:var(--purple);border-radius:50%;animation:spin .7s linear infinite;flex-shrink:0}@keyframes spin{to{transform:rotate(360deg)}}.loading-container{display:flex;align-items:center;justify-content:center;padding:48px 20px;color:var(--text-muted);gap:12px}.empty-state{text-align:center;padding:40px 20px;color:var(--text-muted)}.empty-state .icon{font-size:44px;margin-bottom:10px}.empty-state p{font-size:15px}.divider{height:1.5px;background:var(--border);margin:20px 0}.success-page{text-align:center;padding:20px 0}.success-page .check-icon{font-size:56px;margin-bottom:12px}.success-page h2{font-size:26px;color:var(--purple);margin-bottom:8px}.success-page p{color:var(--text-muted);font-size:15px;line-height:1.7;max-width:400px;margin:0 auto 16px}.pos-chip{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--gradient);color:#fff;font-size:13px;font-weight:700;font-family:Poppins,sans-serif;flex-shrink:0}@media (max-width: 640px){.page-content{padding:16px 12px}.card{padding:18px}.page-header .logo{font-size:26px}thead th,tbody td{padding:9px 10px}.code-block{font-size:34px;letter-spacing:8px}}.droppable-active{background:#7c3aed0a}