*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background:linear-gradient(135deg,#1a1a2e,#16213e,#0f3460);color:#fff;min-height:100vh;line-height:1.6}.app-container{min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:20px;max-width:500px;margin:0 auto}.header{text-align:center;margin-bottom:40px;padding-top:20px}.app-title{font-size:2.5rem;font-weight:800;background:linear-gradient(45deg,#ff6b6b,#4ecdc4,#45b7d1);background-size:200% 200%;-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;animation:gradientShift 3s ease-in-out infinite;margin-bottom:8px}@keyframes gradientShift{0%,to{background-position:0 50%}50%{background-position:100% 50%}}.app-subtitle{font-size:.9rem;opacity:.7;font-weight:400}.main-card{background:#ffffff1a;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-radius:20px;border:1px solid rgba(255,255,255,.2);padding:30px;width:100%;box-shadow:0 20px 40px #0000004d}.audio-controller{width:100%}.file-upload-section{text-align:center;margin-bottom:30px}.file-buttons{display:flex;align-items:center;justify-content:center;gap:15px;flex-wrap:wrap;margin-bottom:15px}.file-input-wrapper{position:relative;display:inline-block;cursor:pointer;background:linear-gradient(45deg,#ff6b6b,#4ecdc4);border-radius:15px;padding:2px}.file-input{display:none}.file-input-button{background:#1a1a2ee6;border:none;border-radius:13px;padding:15px 30px;color:#fff;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;display:block}.file-input-button:hover{background:#1a1a2eb3;transform:translateY(-2px)}.share-button{background:#ffffff1a;border:1px solid rgba(255,255,255,.2);border-radius:15px;padding:15px 20px;color:#fff;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;gap:8px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.share-button:hover{background:#fff3;transform:translateY(-2px);box-shadow:0 5px 15px #0000004d}.share-button svg{flex-shrink:0}.selected-file{background:#ffffff1a;border-radius:12px;padding:15px;margin-bottom:20px;border:1px solid rgba(255,255,255,.2)}.file-name{font-size:.9rem;opacity:.9;word-break:break-all}.loading{text-align:center;padding:20px;opacity:.8}.audio-player{width:100%;margin-bottom:25px;border-radius:12px}.controls-section{margin-bottom:30px}.controls-section:last-child{margin-bottom:0}.section-title{font-size:1.1rem;font-weight:600;margin-bottom:15px;color:#4ecdc4}.speed-control{display:flex;align-items:center;gap:15px;margin-bottom:20px;padding:15px;background:#ffffff0d;border-radius:12px;border:1px solid rgba(255,255,255,.1)}.speed-slider{flex:1;height:6px;background:#fff3;border-radius:3px;outline:none;-webkit-appearance:none}.speed-slider::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;background:linear-gradient(45deg,#ff6b6b,#4ecdc4);border-radius:50%;cursor:pointer;box-shadow:0 2px 10px #0000004d}.speed-slider::-moz-range-thumb{width:20px;height:20px;background:linear-gradient(45deg,#ff6b6b,#4ecdc4);border-radius:50%;cursor:pointer;border:none;box-shadow:0 2px 10px #0000004d}.speed-display{font-weight:700;font-size:1.1rem;color:#4ecdc4;min-width:60px;text-align:center}.button-grid{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px}.control-button{position:relative;background:#ffffff1a;border:1px solid rgba(255,255,255,.2);border-radius:10px;padding:0;color:#fff;font-size:.9rem;font-weight:500;cursor:pointer;transition:all .3s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.control-button:hover{background:#fff3;transform:translateY(-2px);box-shadow:0 5px 15px #0000004d}.control-button-main{background:none;border:none;color:inherit;font:inherit;cursor:pointer;padding:10px 16px}.control-button-remove{position:absolute;top:-8px;right:-8px;background:#ff4757;border:none;border-radius:50%;width:20px;height:20px;color:#fff;font-size:12px;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease;box-shadow:0 2px 8px #ff475766}.control-button-remove:hover{background:#ff3742;transform:scale(1.1)}.control-button-confirm-delete{background:#ff3742;transform:translateY(-2px);box-shadow:0 5px 15px #ff475766;border:none;border-radius:10px;padding:10px 16px;color:#fff;font:inherit;cursor:pointer;transition:all .3s ease;width:100%;height:100%}.add-form{display:flex;align-items:center;gap:12px;background:#ffffff0d;padding:15px;border-radius:12px;border:1px solid rgba(255,255,255,.1)}.add-form label{font-size:.9rem;font-weight:500;white-space:nowrap;color:#4ecdc4}.add-form input{flex:1;background:#ffffff1a;border:1px solid rgba(255,255,255,.2);border-radius:8px;padding:10px 12px;color:#fff;font-size:.9rem;outline:none;transition:all .3s ease}.add-form input:focus{border-color:#4ecdc4;background:#ffffff26;box-shadow:0 0 0 2px #4ecdc433}.add-form input::placeholder{color:#ffffff80}.add-button{background:linear-gradient(45deg,#ff6b6b,#4ecdc4);border:none;border-radius:8px;width:36px;height:36px;color:#fff;font-size:1.2rem;font-weight:700;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center}.add-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 5px 15px #0000004d}.add-button:disabled{opacity:.5;cursor:not-allowed}.sticky-container{position:sticky;bottom:30px;width:100%;display:flex;justify-content:center;align-items:center;z-index:1000;pointer-events:none}.sticky-container button{pointer-events:auto}.rewind-button{width:80px;height:80px;border:none;border-radius:50%;background:linear-gradient(45deg,#ff6b6b,#4ecdc4);color:#fff;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 25px #0006;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.rewind-button:hover{box-shadow:0 12px 35px #00000080}.play-button{position:absolute;right:20px;width:65px;height:65px;border:none;border-radius:50%;background:linear-gradient(45deg,#ff6b6b,#4ecdc4);color:#fff;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 25px #0006;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.play-button:hover{box-shadow:0 12px 35px #00000080}.play-button svg{margin-left:2px}@media (max-width: 480px){.app-container{padding:15px}.app-title{font-size:2rem}.main-card{padding:20px}.speed-control{gap:10px}.speed-slider{width:100%}.add-form{gap:10px}.add-form input{width:100%}.add-button{align-self:center}.sticky-container{bottom:20px}.rewind-button{width:100px;height:100px}.rewind-button svg{width:60px;height:60px}.play-button{width:70px;height:70px;right:35px}.play-button svg{width:40px;height:40px}}.only-button{position:initial}