.navbar{background:#fffffff2;padding:1rem 0;box-shadow:0 1px 3px #00000014,0 1px 2px #0000000f;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}.nav-container{max-width:1200px;margin:0 auto;padding:0 2rem;display:flex;justify-content:space-between;align-items:center}.nav-logo{font-size:1.5rem;font-weight:700;background:linear-gradient(135deg,var(--primary-color) 0%,var(--secondary-color) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;text-decoration:none;letter-spacing:-.5px}.nav-menu{display:flex;gap:2rem;align-items:center}.nav-link{color:var(--text-secondary);text-decoration:none;transition:color .2s ease;font-weight:500;font-size:.95rem;-webkit-user-select:none;user-select:none}.nav-link:hover{color:var(--primary-color)}.nav-btn{background:linear-gradient(135deg,var(--primary-color) 0%,var(--primary-hover) 100%);color:#fff;border:none;padding:.6rem 1.5rem;border-radius:8px;cursor:pointer;text-decoration:none;transition:all .2s ease;font-weight:600;font-size:.95rem;box-shadow:0 2px 4px #4f46e533;-webkit-user-select:none;user-select:none}.nav-btn:hover{transform:translateY(-1px);box-shadow:0 4px 8px #4f46e54d}.nav-hamburger{display:none;background:none;border:none;cursor:pointer;padding:.5rem;margin-left:1rem;z-index:110}.hamburger,.hamburger:before,.hamburger:after{display:block;width:28px;height:4px;background:var(--primary-color);border-radius:2px;position:relative;transition:all .3s ease}.hamburger:before,.hamburger:after{content:"";position:absolute;left:0}.hamburger:before{top:-9px}.hamburger:after{top:9px}.hamburger.active{background:transparent}.hamburger.active:before{top:0;transform:rotate(45deg)}.hamburger.active:after{top:0;transform:rotate(-45deg)}.nav-menu-desktop{display:flex;gap:2rem;align-items:center}.nav-menu-mobile{display:none}@media (max-width: 768px){.nav-container{padding:0 1rem}.nav-logo{font-size:1.25rem}.nav-hamburger{display:block}.nav-menu-desktop{display:none}.nav-menu-mobile{display:flex;flex-direction:column;position:absolute;top:64px;left:0;width:100vw;background:#fffffffa;box-shadow:0 2px 8px #00000014;padding:1.5rem 0;gap:1.5rem;z-index:105;transition:transform .3s ease,opacity .3s ease;opacity:0;pointer-events:none;transform:translateY(-20px)}.nav-menu-mobile.open{opacity:1;pointer-events:auto;transform:translateY(0)}.nav-link,.nav-btn{font-size:1.1rem;padding:.8rem 2rem;width:100%;text-align:left}.nav-btn.logout-mobile{background:linear-gradient(135deg,#ef4444,#f87171);color:#fff;border:none;font-size:1.15rem;font-weight:700;border-radius:12px;box-shadow:0 2px 8px #ef444426;margin-top:.5rem;margin-bottom:.5rem;padding:1rem 2rem;width:90%;text-align:center;letter-spacing:.5px;transition:background .2s,box-shadow .2s}.nav-btn.logout-mobile:active{background:linear-gradient(135deg,#dc2626,#f87171);box-shadow:0 4px 12px #ef444440}.nav-btn.signup-mobile{background:linear-gradient(135deg,var(--primary-color) 0%,var(--primary-hover) 100%);color:#fff;border:none;font-size:1.15rem;font-weight:700;border-radius:12px;box-shadow:0 2px 8px #4f46e526;margin-top:.5rem;margin-bottom:.5rem;padding:1rem 2rem;width:90%;text-align:center;letter-spacing:.5px;transition:background .2s,box-shadow .2s}.nav-btn.signup-mobile:active{box-shadow:0 4px 12px #4f46e540;transform:translateY(0)}}.tts-demo{margin:2rem auto;max-width:500px;background:#fff;border-radius:12px;box-shadow:0 2px 16px #00000012;padding:2rem 1.5rem;text-align:center}.tts-demo h2{margin-bottom:1rem;font-size:1.4rem;color:#2d3748}.tts-demo-form{display:flex;flex-direction:column;gap:1rem;margin-bottom:1rem}.tts-demo-form textarea{resize:vertical;min-height:80px;font-size:1rem;padding:.75rem;border-radius:8px;border:1px solid #cbd5e1;background:#f7fafc;color:#2d3748;transition:border .2s}.tts-demo-form textarea:focus{border-color:#3182ce;outline:none}.tts-demo-form button{align-self:center;min-width:160px}.error-msg{color:#e53e3e;background:#fff5f5;border-radius:6px;padding:.5rem 1rem;margin-bottom:.5rem;font-size:.98rem}.audio-output{margin-top:1rem;display:flex;flex-direction:column;align-items:center;gap:.5rem}.audio-output audio{width:100%;max-width:320px}.audio-output a{margin-top:.5rem}.home-container{padding:2rem 2rem 5rem;max-width:1200px;margin:0 auto}.hero{text-align:center}.hero h1{font-size:3.5rem;margin-bottom:1rem;background:linear-gradient(135deg,var(--primary-color) 0%,var(--secondary-color) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;font-weight:800;letter-spacing:-1px}.subtitle{font-size:1.25rem;color:var(--text-secondary);margin-bottom:2rem;max-width:600px;margin-left:auto;margin-right:auto;line-height:1.7}.cta-buttons{display:flex;gap:1rem;justify-content:center;margin-top:2.5rem}.cta-btn{padding:1rem 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var(--border);box-shadow:0 2px 4px #0000000a}.feature-card:hover{transform:translateY(-5px);box-shadow:0 12px 24px #00000014;border-color:var(--primary-light)}.feature-card h3{font-size:1.5rem;margin-bottom:1rem;color:var(--text-primary);font-weight:600}.feature-card p{color:var(--text-secondary);line-height:1.6}.auth-container{display:flex;justify-content:center;align-items:top;padding-right:2rem;padding-left:2rem;padding-bottom:3rem;width:100%;margin:auto}.auth-card{background:#fff;padding:3rem;border-radius:16px;box-shadow:0 4px 6px #0000000d,0 10px 15px #0000000d;width:100%;max-width:440px;border:1px solid var(--border)}.auth-card h2{margin-top:0;margin-bottom:2rem;color:var(--text-primary);text-align:center;font-size:1.875rem;font-weight:700;user-select:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none}.form-group{margin-bottom:1.5rem}.form-group 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var(--success);font-weight:500}.auth-link{text-align:center;margin-top:1.5rem;color:var(--text-secondary);font-size:.95rem}.auth-link a{color:#646cff;text-decoration:none}.auth-link a:hover{text-decoration:underline}.divider{display:flex;align-items:center;text-align:center;margin:1.5rem 0;color:var(--text-muted);font-size:.875rem}.divider:before,.divider:after{content:"";flex:1;border-bottom:1px solid var(--border)}.divider span{padding:0 1rem}.google-btn{width:100%;padding:.875rem;border:1px solid var(--border);background:#fff;color:var(--text-primary);font-size:.95rem;font-weight:500;border-radius:8px;cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center;gap:.75rem;margin-bottom:.75rem}.google-btn:hover:not(:disabled){background:var(--surface);border-color:var(--text-muted);box-shadow:0 2px 4px #00000014}.google-btn:disabled{opacity:.6;cursor:not-allowed}.google-icon{display:inline-block}.apple-btn{width:100%;padding:.875rem;border:1px solid #000;background:#000;color:#fff;font-size:.95rem;font-weight:500;border-radius:8px;cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center;gap:.75rem;margin-bottom:1.5rem}.apple-btn:hover:not(:disabled){background:#1a1a1a;border-color:#1a1a1a;box-shadow:0 2px 4px #0003}.apple-btn:disabled{opacity:.6;cursor:not-allowed}.apple-icon{display:inline-block}.modal-content{background:#fff;border-radius:16px;box-shadow:0 20px 25px -5px #0000001a,0 10px 10px -5px #0000000a;max-width:90%;width:450px}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:1.5rem 1.5rem 1rem;border-bottom:1px solid var(--border)}.modal-header h3{margin:0;font-size:1.25rem;font-weight:700;color:var(--text-primary)}.modal-close{background:none;border:none;font-size:2rem;color:var(--text-muted);cursor:pointer;padding:0;width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:6px;transition:all .2s ease;line-height:1}.modal-close:hover{background:var(--surface-hover);color:var(--text-primary)}.modal-body{padding:1.5rem}.modal-body p{margin:0;color:var(--text-secondary);font-size:1rem;line-height:1.6}.modal-footer{display:flex;gap:.75rem;padding:1rem 1.5rem 1.5rem;justify-content:flex-end}.modal-btn{padding:.625rem 1.25rem;border-radius:8px;font-weight:600;font-size:.95rem;cursor:pointer;transition:all .2s ease;border:none}.modal-btn-cancel{background:var(--surface);color:var(--text-secondary);border:1.5px solid var(--border)}.modal-btn-cancel:hover{background:var(--surface-hover);color:var(--text-primary)}.modal-btn-confirm{background:var(--error);color:#fff;box-shadow:0 2px 4px #ef444433}.modal-btn-confirm:hover{background:#dc2626;transform:translate3d(0,-1px,0);box-shadow:0 4px 8px #ef44444d}@media (max-width: 768px){.modal-content{width:calc(100% - 32px);max-width:calc(100% - 32px);margin:0 16px}}*{box-sizing:border-box}body,html{overflow-x:hidden!important;width:100vw;max-width:100vw;position:relative}.spotify-dashboard{display:flex;flex:1;background:#f9fafb;color:#111827;overflow:hidden;height:100vh;max-height:100vh;width:100vw;max-width:100vw}.sidebar{width:280px;background:#fff;padding:24px 16px;overflow-y:auto;border-right:1px solid #e5e7eb;display:flex;flex-direction:column;gap:24px;box-shadow:2px 0 8px #0000000d}.sidebar::-webkit-scrollbar{width:12px}.sidebar::-webkit-scrollbar-track{background:transparent}.sidebar::-webkit-scrollbar-thumb{background:#e5e7eb;border-radius:6px}.sidebar::-webkit-scrollbar-thumb:hover{background:#d1d5db}.sidebar-section{display:flex;flex-direction:column;gap:8px}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;margin-bottom:4px}.sidebar-header h3{font-size:.875rem;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:#6b7280;margin:0}.sidebar-btn{display:flex;align-items:center;gap:12px;padding:12px;background:transparent;border:none;border-radius:8px;color:#4b5563;font-size:.95rem;font-weight:600;cursor:pointer;transition:all .2s ease;width:100%;text-align:left}.sidebar-btn:hover{background:#f3f4f6;color:#111827}.sidebar-btn.active{background:#e0e7ff;color:#4f46e5}.sidebar-btn svg{flex-shrink:0}.icon-btn{background:transparent;border:none;color:#6b7280;cursor:pointer;padding:4px;border-radius:50%;transition:all .2s ease;display:flex;align-items:center;justify-content:center}.icon-btn:hover{background:#f3f4f6;color:#111827}.sidebar-items{display:flex;flex-direction:column;gap:4px}.sidebar-item-wrapper{position:relative;display:flex;align-items:center;gap:4px;border-radius:6px;transition:all .2s ease}.sidebar-item-wrapper:hover .sidebar-item-actions{opacity:1;pointer-events:auto}.sidebar-item{display:flex;align-items:center;gap:12px;padding:8px 12px;background:transparent;border:none;border-radius:6px;cursor:pointer;transition:all .2s ease;text-align:left;flex:1;min-width:0}.sidebar-item:hover{background:#f3f4f6}.sidebar-item.active{background:#e0e7ff}.sidebar-item-actions{display:flex;gap:4px;padding:4px 8px;opacity:0;pointer-events:none;transition:opacity .2s ease;flex-shrink:0}@media (max-width: 768px){.sidebar-item-actions{opacity:1;pointer-events:auto}}.sidebar-action-btn{background:transparent;border:none;color:#6b7280;cursor:pointer;padding:6px;border-radius:4px;transition:all .2s 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0;overflow-y:auto;overflow-x:hidden;width:100%;max-width:100%}.main-content.has-bulk-actions{padding-bottom:18rem}.main-content::-webkit-scrollbar{width:12px}.main-content::-webkit-scrollbar-track{background:transparent}.main-content::-webkit-scrollbar-thumb{background:#d1d5db;border-radius:6px}.main-content::-webkit-scrollbar-thumb:hover{background:#9ca3af}.content-header{display:flex;align-items:flex-end;justify-content:space-between;gap:20px}.content-header h1{font-size:3rem;font-weight:900;margin:0;color:#111827;line-height:1.1}.content-subtitle{font-size:.95rem;color:#6b7280;margin:8px 0 0}.convert-fab{width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,#4f46e5,#6366f1);border:none;color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .3s ease;box-shadow:0 8px 24px #4f46e54d;flex-shrink:0;margin-right:1rem}.convert-fab:hover{transform:scale(1.06);box-shadow:0 12px 32px #4f46e566}.play-all-section{display:flex;align-items:center;gap:16px;margin-bottom:24px}.play-all-btn{display:flex;align-items:center;gap:12px;padding:14px 28px;background:linear-gradient(135deg,#4f46e5,#6366f1);color:#fff;border:none;border-radius:500px;font-size:1rem;font-weight:700;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 16px #4f46e54d}.play-all-btn:hover{transform:scale(1.05);box-shadow:0 6px 24px #4f46e566}.play-all-btn svg{flex-shrink:0}.track-count-info{color:#6b7280;font-size:.95rem;font-weight:500}.global-player{position:fixed;bottom:0;left:0;right:0;background:linear-gradient(180deg,#fffffff2,#fffffffa);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-top:1px solid #e5e7eb;z-index:1000;box-shadow:0 -4px 20px #00000014;animation:slideUpPlayer .3s ease}@keyframes slideUpPlayer{0%{transform:translateY(100%)}to{transform:translateY(0)}}.player-progress-bar{position:absolute;top:0;left:0;right:0;height:4px;background:#e5e7eb;cursor:pointer;transition:height .2s ease}.player-progress-bar:hover{height:6px}.player-progress-fill{height:100%;background:linear-gradient(90deg,#4f46e5,#6366f1);transition:width .1s linear;border-radius:0 2px 2px 0}.player-content{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px;padding:16px 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#4f46e566}.player-time-volume{display:flex;align-items:center;gap:20px;justify-content:flex-end}.player-time{font-size:.85rem;color:#6b7280;font-variant-numeric:tabular-nums;white-space:nowrap}.player-volume{display:flex;align-items:center;gap:10px}.player-volume svg{color:#6b7280;flex-shrink:0}.volume-slider{width:100px;height:4px;-webkit-appearance:none;-moz-appearance:none;appearance:none;background:#e5e7eb;border-radius:2px;outline:none;cursor:pointer}.volume-slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:14px;height:14px;background:#4f46e5;border-radius:50%;cursor:pointer;transition:all .2s ease}.volume-slider::-webkit-slider-thumb:hover{background:#6366f1;transform:scale(1.2)}.volume-slider::-moz-range-thumb{width:14px;height:14px;background:#4f46e5;border:none;border-radius:50%;cursor:pointer;transition:all .2s 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#4f46e54d;z-index:1000;max-width:90%;min-width:min(600px,90vw)}.bulk-actions-info{display:flex;align-items:center;gap:12px;margin-right:16px}.bulk-count{color:#fff;font-size:.9rem;font-weight:600}.bulk-clear{background:#ffffff26;border:1px solid rgba(255,255,255,.3);color:#fff;padding:4px 12px;border-radius:6px;cursor:pointer;font-size:.85rem;font-weight:500}.bulk-clear:hover{background:#ffffff40}.bulk-actions-buttons{display:flex;gap:8px}.bulk-action-btn{display:flex;align-items:center;gap:6px;padding:8px 14px;background:#fffffff2;border:none;border-radius:6px;color:#4f46e5;font-size:.85rem;font-weight:600;cursor:pointer;box-shadow:0 1px 4px #0000001a}.bulk-action-btn:hover{background:#fff;box-shadow:0 2px 8px #00000026}.bulk-action-btn.danger{color:#ef4444}.bulk-action-btn.danger:hover{background:#fef2f2;color:#dc2626}.bulk-action-btn svg{flex-shrink:0}.tracks-table{margin-top:24px}.tracks-header{display:grid;grid-template-columns:48px 40px 3fr 1.5fr 100px 120px 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#00000014}.selector-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.voice-selector h3{margin:0;color:#333;font-size:1.5rem;font-weight:600}.voice-count{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:6px 14px;border-radius:20px;font-size:.85rem;font-weight:600;box-shadow:0 2px 6px #667eea4d}.search-bar{position:relative;margin-bottom:20px}.search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:#999;pointer-events:none}.search-input{width:100%;padding:12px 40px 12px 44px;border:2px solid #e0e0e0;border-radius:8px;font-size:.95rem;transition:all .2s;background:#fafafa}.search-input:focus{outline:none;border-color:#667eea;background:#fff;box-shadow:0 0 0 3px #667eea1a}.search-input::placeholder{color:#aaa}.clear-search{position:absolute;right:12px;top:50%;transform:translateY(-50%);background:#ddd;border:none;width:24px;height:24px;border-radius:50%;font-size:1.3rem;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#666;transition:all .2s}.clear-search:hover{background:#ccc;color:#333}.voice-filters{display:flex;gap:12px;margin-bottom:20px;flex-wrap:wrap}.filter-select{flex:1;min-width:180px;padding:10px 14px;border:2px solid #dee2e6;border-radius:8px;font-size:.95rem;background:#fff;cursor:pointer;transition:all .2s;font-weight:500}.filter-select:hover{border-color:#667eea}.filter-select:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea26}.voice-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;max-height:550px;overflow-y:auto;padding:4px}.voice-card{padding:18px;border:2px solid #e9ecef;border-radius:10px;cursor:pointer;transition:all .25s cubic-bezier(.4,0,.2,1);background:#fff;position:relative;overflow:hidden}.voice-card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,#667eea,#764ba2);opacity:0;transition:opacity .25s}.voice-card:hover{border-color:#667eea;box-shadow:0 8px 16px #667eea26;transform:translateY(-3px)}.voice-card:hover:before{opacity:1}.voice-card.selected{border-color:#667eea;background:linear-gradient(135deg,#f5f7ff,#e8ecff);box-shadow:0 4px 16px #667eea40}.voice-card.selected:before{opacity:1}.voice-card.generating{border-color:#ff9800;background:linear-gradient(135deg,#fff8f0,#ffe8d1);animation:pulse 1.5s ease-in-out infinite}.voice-card.playing{border-color:#4caf50;background:linear-gradient(135deg,#f1f8f4,#d7f0dd);animation:playing 2s ease-in-out infinite}@keyframes pulse{0%,to{box-shadow:0 4px 16px #ff98004d}50%{box-shadow:0 6px 24px #ff980073}}@keyframes playing{0%,to{box-shadow:0 4px 16px #4caf504d}50%{box-shadow:0 6px 24px #4caf5073}}.voice-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;gap:10px}.voice-name{font-weight:700;font-size:1.15rem;color:#2c3e50;flex:1}.voice-gender{padding:5px 12px;border-radius:16px;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.5px;align-self:flex-start}.voice-gender.female{background:linear-gradient(135deg,#fce4ec,#f8bbd0);color:#c2185b;border:1px solid #f8bbd0}.voice-gender.male{background:linear-gradient(135deg,#e3f2fd,#bbdefb);color:#1976d2;border:1px solid #bbdefb}.voice-details{display:flex;gap:10px;margin-bottom:10px;flex-wrap:wrap}.voice-language,.voice-style{display:flex;align-items:center;gap:5px;font-size:.85rem;padding:5px 10px;border-radius:6px;background:#f8f9fa;color:#495057;font-weight:500;border:1px solid #e9ecef}.detail-icon{opacity:.7}.voice-description{font-size:.9rem;color:#6c757d;margin:0 0 10px;line-height:1.5;min-height:42px}.voice-status{margin-top:12px;padding:8px 12px;border-radius:6px;font-size:.85rem;font-weight:600;text-align:center;display:flex;align-items:center;justify-content:center;gap:8px}.generating-status{background:linear-gradient(135deg,#fff3e0,#ffe0b2);color:#e65100;border:1px solid #ffcc80}.playing-status{background:linear-gradient(135deg,#e8f5e9,#c8e6c9);color:#2e7d32;border:1px solid #a5d6a7}.selected-status{background:linear-gradient(135deg,#e3f2fd,#bbdefb);color:#1565c0;border:1px solid #90caf9}.spinner{animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.audio-wave{flex-shrink:0}.no-voices{text-align:center;padding:60px 40px;color:#6c757d;display:flex;flex-direction:column;align-items:center;gap:16px}.no-voices svg{opacity:.4;margin-bottom:8px}.no-voices p{font-size:1.1rem;margin:0;font-weight:500}.reset-filters{margin-top:8px;padding:10px 24px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:6px;font-size:.95rem;font-weight:600;cursor:pointer;transition:all .2s;box-shadow:0 2px 8px #667eea4d}.reset-filters:hover{transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.reset-filters:active{transform:translateY(0)}.voice-grid::-webkit-scrollbar{width:10px}.voice-grid::-webkit-scrollbar-track{background:#f1f1f1;border-radius:5px;margin:4px 0}.voice-grid::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#667eea,#764ba2);border-radius:5px;border:2px solid #f1f1f1}.voice-grid::-webkit-scrollbar-thumb:hover{background:linear-gradient(180deg,#5568d3,#653a8a)}@media (max-width: 1024px){.voice-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width: 768px){.voice-selector{padding:20px}.selector-header{flex-direction:column;align-items:flex-start;gap:10px}.voice-count{align-self:flex-start}.voice-grid{grid-template-columns:1fr;max-height:450px}.voice-filters{flex-direction:column;gap:10px}.filter-select{width:100%;min-width:0}.voice-card{padding:16px}.voice-name{font-size:1.05rem}.no-voices{padding:40px 20px}}@media (max-width: 480px){.voice-selector h3{font-size:1.25rem}.search-input{font-size:.9rem;padding:10px 36px 10px 40px}.voice-filters{gap:8px}.filter-select{font-size:.9rem;padding:8px 12px;min-width:0}}.convert-container{max-width:50%;width:100%;margin:0 auto;padding:2rem 3rem}.convert-container h1{text-align:center;margin-bottom:2rem;color:var(--text-primary);font-weight:700}.convert-tabs-container{background:#fff;border-radius:16px;border:1px solid var(--border);box-shadow:0 2px 4px #0000000a;margin-bottom:2rem;overflow:hidden}.tabs-header{display:flex;border-bottom:2px solid var(--border);background:#f8f9fa}.tab-btn{flex:1;padding:1rem 2rem;background:transparent;border:none;font-size:1rem;font-weight:600;color:#6c757d;cursor:pointer;transition:all .2s ease;position:relative}.tab-btn:hover{background:#4f46e50d;color:var(--primary-color)}.tab-btn.active{color:var(--primary-color);background:#fff}.tab-btn.active:after{content:"";position:absolute;bottom:-2px;left:0;right:0;height:3px;background:linear-gradient(135deg,var(--primary-color) 0%,var(--primary-hover) 100%)}.tab-content{padding:2rem}.tab-content form{display:flex;flex-direction:column}.input-group{margin-bottom:1rem}.input-label{display:block;margin-bottom:.5rem;font-size:.9rem;font-weight:600;color:var(--text-secondary)}.track-name-input{width:100%;padding:.875rem 1rem;border:1.5px solid var(--border);border-radius:8px;background:var(--surface);color:var(--text-primary);font-size:1rem;font-family:inherit;box-sizing:border-box;transition:all .2s ease}.track-name-input:focus{outline:none;border-color:var(--primary-color);background:#fff;box-shadow:0 0 0 3px #4f46e51a}.track-name-input:disabled{opacity:.6;cursor:not-allowed}.text-input{width:100%;padding:1rem;border:1.5px solid var(--border);border-radius:8px;background:var(--surface);color:var(--text-primary);font-size:1rem;font-family:inherit;resize:vertical;margin-bottom:1rem;box-sizing:border-box;transition:all .2s ease;user-select:text;-webkit-user-select:text;-moz-user-select:text;-ms-user-select:text}.text-input:focus{outline:none;border-color:var(--primary-color);background:#fff;box-shadow:0 0 0 3px #4f46e51a}.file-upload-area{display:flex;flex-direction:column;align-items:center;padding:3rem 2rem;border:2px dashed var(--border);border-radius:12px;background:var(--surface);margin-bottom:1rem;transition:all .2s ease}.file-upload-area:hover{border-color:var(--primary-color);background:var(--primary-light)}.upload-icon{margin-bottom:1rem;color:#adb5bd;transition:all .2s ease}.file-upload-area:hover .upload-icon{color:var(--primary-color);transform:translateY(-3px)}.file-input-wrapper{width:100%;max-width:400px;text-align:center}.file-input-wrapper input[type=file]{display:none}.file-input-label{display:block;padding:.75rem 1.5rem;background:#fff;border:2px solid var(--primary-color);border-radius:8px;color:var(--primary-color);font-weight:600;cursor:pointer;transition:all .2s ease}.file-input-label:hover{background:var(--primary-color);color:#fff;transform:translateY(-2px);box-shadow:0 4px 12px #4f46e54d}.file-types{margin-top:1rem;font-size:.9rem;color:#6c757d}.convert-methods{display:grid;grid-template-columns:repeat(auto-fit,minmax(400px,1fr));gap:2rem;margin-bottom:2rem}.method-card{background:#fff;padding:2rem;border-radius:16px;border:1px solid var(--border);box-shadow:0 2px 4px #0000000a;transition:all .2s ease}.method-card:hover{box-shadow:0 8px 16px #00000014}.method-card h2{margin-top:0;margin-bottom:1.5rem;font-size:1.5rem;color:var(--text-primary);font-weight:600}.method-card textarea{width:100%;padding:1rem;border:1.5px solid var(--border);border-radius:8px;background:var(--surface);color:var(--text-primary);font-size:1rem;font-family:inherit;resize:vertical;margin-bottom:1rem;box-sizing:border-box;transition:all .2s ease;user-select:text;-webkit-user-select:text;-moz-user-select:text;-ms-user-select:text}.method-card textarea:focus{outline:none;border-color:var(--primary-color);background:#fff;box-shadow:0 0 0 3px #4f46e51a}.file-name{margin-top:.5rem;color:var(--primary-color);font-size:.9rem;font-weight:500}.submit-btn{width:100%;padding:.875rem;background:linear-gradient(135deg,var(--primary-color) 0%,var(--primary-hover) 100%);color:#fff;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s ease;box-shadow:0 2px 4px #4f46e533}.submit-btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 8px #4f46e54d}.submit-btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.result-card{background:#fff;padding:2rem;border-radius:16px;margin-top:2rem;border:1px solid var(--border);box-shadow:0 2px 4px #0000000a}.result-card h2{margin-top:0;margin-bottom:1.5rem;color:var(--text-primary);font-weight:600}.result-info p{margin:.5rem 0;color:var(--text-secondary)}.audio-player{margin-top:1.5rem;display:flex;flex-direction:column;gap:1rem}.audio-player audio{width:100%;max-width:500px;border-radius:8px}.download-btn{display:inline-block;padding:.75rem 1.5rem;background:linear-gradient(135deg,var(--primary-color) 0%,var(--primary-hover) 100%);color:#fff;text-decoration:none;border-radius:8px;text-align:center;max-width:200px;transition:all .2s ease;font-weight:600;box-shadow:0 2px 4px #4f46e533}.download-btn:hover{transform:translateY(-1px);box-shadow:0 4px 8px #4f46e54d}.error-text{color:var(--error);font-weight:500}.info-text{color:var(--text-secondary);line-height:1.6;margin:.75rem 0}.processing-message{background:#f0f9ff;border-left:4px solid #3b82f6;padding:1rem 1.25rem;border-radius:8px;margin-top:1rem}.link-btn{background:none;border:none;color:var(--primary-color);cursor:pointer;text-decoration:underline;font-size:inherit;font-weight:600;padding:0;transition:color .2s ease}.link-btn:hover{color:var(--primary-hover)}.status-badge{display:inline-block;padding:.25rem .75rem;border-radius:12px;font-weight:600;font-size:.875rem;text-transform:capitalize}.status-completed{background:#d1fae5;color:#065f46}.status-processing{background:#fef3c7;color:#92400e}.status-failed{background:#fee2e2;color:#991b1b}.advanced-controls{background:#fff;padding:1.5rem;border-radius:16px;margin:2rem 0;border:1px solid var(--border);box-shadow:0 2px 4px #0000000a}.toggle-advanced-btn{background:none;border:none;color:var(--primary-color);font-size:1.1rem;font-weight:600;cursor:pointer;display:flex;align-items:center;gap:.5rem;padding:.5rem;transition:all .2s ease}.toggle-advanced-btn:hover{color:var(--primary-hover)}.advanced-options{margin-top:1.5rem;padding-top:1.5rem;border-top:1px solid var(--border)}.control-group{margin-bottom:2rem}.control-group label{display:block;font-weight:600;color:var(--text-primary);margin-bottom:.75rem;font-size:1rem}.control-value{color:var(--primary-color);font-weight:700;margin-left:.5rem}.slider{width:100%;height:6px;border-radius:3px;background:#e2e8f0;outline:none;-webkit-appearance:none;margin:.5rem 0}.slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:20px;height:20px;border-radius:50%;background:var(--primary-color);cursor:pointer;box-shadow:0 2px 4px #4f46e54d;transition:all .2s ease}.slider::-webkit-slider-thumb:hover{transform:scale(1.2);box-shadow:0 3px 8px #4f46e566}.slider::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--primary-color);cursor:pointer;border:none;box-shadow:0 2px 4px #4f46e54d;transition:all .2s ease}.slider::-moz-range-thumb:hover{transform:scale(1.2);box-shadow:0 3px 8px #4f46e566}.slider-labels{display:flex;justify-content:space-between;font-size:.85rem;color:var(--text-secondary);margin-top:.25rem}.checkbox-label{display:flex;align-items:center;gap:.75rem;cursor:pointer;-webkit-user-select:none;user-select:none}.checkbox-label input[type=checkbox]{width:18px;height:18px;cursor:pointer;accent-color:var(--primary-color)}.blend-controls{margin-top:1.5rem;padding:1.5rem;background:var(--surface);border-radius:8px;border:1px solid var(--border)}.blend-voice-select{margin-bottom:1.5rem}.blend-voice-select label{display:block;font-weight:600;margin-bottom:.5rem;color:var(--text-primary)}.voice-dropdown{width:100%;padding:.75rem;border:1.5px solid var(--border);border-radius:8px;background:#fff;color:var(--text-primary);font-size:.95rem;cursor:pointer;transition:all .2s ease}.voice-dropdown:hover{border-color:var(--primary-color)}.voice-dropdown:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #4f46e51a}.blend-ratio label{font-size:.95rem}.usage-info-banner{background:linear-gradient(135deg,#f0f9ff,#e0f2fe);border:2px solid #0ea5e9;border-radius:12px;padding:1.25rem;margin-bottom:1.5rem;box-shadow:0 2px 8px #0ea5e91a}.usage-info-banner.usage-depleted{background:linear-gradient(135deg,#fef2f2,#fee2e2);border-color:#ef4444;box-shadow:0 2px 8px #ef444426}.usage-content{display:flex;justify-content:space-between;align-items:center;margin-bottom:.75rem;flex-wrap:wrap;gap:1rem}.usage-text{font-size:1rem;color:#1e293b;display:flex;align-items:center;gap:.5rem;flex-wrap:wrap}.usage-text strong{font-weight:600}.usage-depleted-text{color:#dc2626;font-weight:600}.usage-progress-bar{width:100%;height:8px;background:#e2e8f0;border-radius:4px;overflow:hidden}.usage-progress-fill{height:100%;transition:width .3s ease,background-color .3s ease;border-radius:4px}.upgrade-btn-inline{padding:.5rem 1rem;background:linear-gradient(135deg,#4f46e5,#6366f1);color:#fff;border:none;border-radius:8px;font-weight:600;font-size:.9rem;cursor:pointer;transition:all .2s ease;box-shadow:0 2px 4px #4f46e533}.upgrade-btn-inline:hover{transform:translateY(-2px);box-shadow:0 4px 8px #4f46e54d}@media (max-width: 768px){.convert-container{padding:1.5rem 1.5rem 3rem;max-width:100%}.convert-methods{grid-template-columns:1fr}.tabs-header{flex-direction:row}.tab-btn{padding:.875rem 1rem;font-size:.95rem}.tab-content{padding:1.5rem}.file-upload-area{padding:2rem 1rem}.slider-labels{font-size:.75rem}.advanced-controls{padding:1rem}.usage-content{flex-direction:column;align-items:flex-start}.upgrade-btn-inline{width:100%}}@media (max-width: 480px){.convert-container h1{font-size:1.5rem}.tab-btn{padding:.75rem .5rem;font-size:.9rem}.tab-content{padding:1rem}.file-upload-area{padding:1.5rem .75rem}.upload-icon{width:36px;height:36px}}:root{--swiper-theme-color: #007aff}:host{position:relative;display:block;margin-left:auto;margin-right:auto;z-index:1}.swiper{margin-left:auto;margin-right:auto;position:relative;overflow:hidden;list-style:none;padding:0;z-index:1;display:block}.swiper-vertical>.swiper-wrapper{flex-direction:column}.swiper-wrapper{position:relative;width:100%;height:100%;z-index:1;display:flex;transition-property:transform;transition-timing-function:var(--swiper-wrapper-transition-timing-function, initial);box-sizing:content-box}.swiper-android .swiper-slide,.swiper-ios .swiper-slide,.swiper-wrapper{transform:translateZ(0)}.swiper-horizontal{touch-action:pan-y}.swiper-vertical{touch-action:pan-x}.swiper-slide{flex-shrink:0;width:100%;height:100%;position:relative;transition-property:transform;display:block}.swiper-slide-invisible-blank{visibility:hidden}.swiper-autoheight,.swiper-autoheight .swiper-slide{height:auto}.swiper-autoheight 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var(--swiper-theme-color));border-radius:50%;border-top-color:transparent}.swiper:not(.swiper-watch-progress) .swiper-lazy-preloader,.swiper-watch-progress .swiper-slide-visible .swiper-lazy-preloader{animation:swiper-preloader-spin 1s infinite linear}.swiper-lazy-preloader-white{--swiper-preloader-color: #fff}.swiper-lazy-preloader-black{--swiper-preloader-color: #000}@keyframes swiper-preloader-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.swiper-pagination{position:absolute;text-align:center;transition:.3s opacity;transform:translateZ(0);z-index:10}.swiper-pagination.swiper-pagination-hidden{opacity:0}.swiper-pagination-disabled>.swiper-pagination,.swiper-pagination.swiper-pagination-disabled{display:none!important}.swiper-pagination-fraction,.swiper-pagination-custom,.swiper-horizontal>.swiper-pagination-bullets,.swiper-pagination-bullets.swiper-pagination-horizontal{bottom:var(--swiper-pagination-bottom, 8px);top:var(--swiper-pagination-top, 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