*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;background:#f5f5f5}.app{max-width:1200px;margin:0 auto;padding:20px}.header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:30px;gap:20px}.header h1{font-size:32px;color:#333}.timer{background:#fff;border-radius:12px;padding:20px;box-shadow:0 2px 8px #0000001a;min-width:200px}.timer h3{font-size:14px;color:#666;margin-bottom:10px;text-transform:uppercase;letter-spacing:.5px}.timer-display{font-size:48px;font-weight:700;color:#333;text-align:center;margin-bottom:15px;font-variant-numeric:tabular-nums}.timer-controls{display:flex;gap:10px}.timer-controls button{flex:1;padding:10px;border:none;border-radius:6px;background:#007bff;color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:background .2s}.timer-controls button:hover{background:#0056b3}.timer-controls button:active{transform:scale(.98)}.exercises-container{display:flex;flex-direction:column;gap:15px}.exercise-row{background:#fff;border-radius:12px;padding:20px;box-shadow:0 2px 8px #0000001a;display:flex;align-items:center;gap:15px;position:relative}.exercise-name{font-size:18px;font-weight:600;color:#333;min-width:150px}.sets-container{display:flex;gap:10px;flex:1;align-items:center}.set-box{width:60px;height:60px;border:2px solid #e0e0e0;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:600;color:#333;cursor:pointer;transition:all .2s}.set-box:hover{border-color:#007bff;background:#f8f9fa}.set-input{width:50px;height:50px;border:none;background:transparent;text-align:center;font-size:20px;font-weight:600;color:#333;outline:none}.set-input::-webkit-inner-spin-button,.set-input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.add-set-btn{width:60px;height:60px;border:2px dashed #007bff;border-radius:8px;background:transparent;color:#007bff;font-size:32px;font-weight:300;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center}.add-set-btn:hover{background:#e7f3ff;border-color:#0056b3;color:#0056b3}.delete-exercise-btn{width:32px;height:32px;border:none;border-radius:50%;background:#dc3545;color:#fff;font-size:24px;font-weight:300;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center;line-height:1}.delete-exercise-btn:hover{background:#c82333;transform:scale(1.1)}.add-exercise-form{background:#fff;border-radius:12px;padding:20px;box-shadow:0 2px 8px #0000001a;display:flex;gap:10px;align-items:center}.exercise-name-input{flex:1;padding:12px 16px;border:2px solid #e0e0e0;border-radius:8px;font-size:16px;outline:none;transition:border-color .2s}.exercise-name-input:focus{border-color:#007bff}.add-exercise-form button{padding:12px 24px;border:none;border-radius:8px;background:#007bff;color:#fff;font-size:16px;font-weight:600;cursor:pointer;transition:background .2s}.add-exercise-form button:hover{background:#0056b3}.add-exercise-form button:last-child{background:#6c757d}.add-exercise-form button:last-child:hover{background:#545b62}.add-exercise-btn{width:100%;padding:20px;border:2px dashed #007bff;border-radius:12px;background:transparent;color:#007bff;font-size:18px;font-weight:600;cursor:pointer;transition:all .2s}.add-exercise-btn:hover{background:#e7f3ff;border-color:#0056b3;color:#0056b3}